Nima Norouzi

Green Chemistry for the Development of Eco-Friendly Products • 2022

In recent years, hydrogen technology has been at the forefront of environmental discussions to meet increasingly tough climate protection goals and particularly low emissions targets in the transportation sector. Like any major change, a transition to hydrogen energy faced challenges in many countries, which caused several problems in the growth of the hydrogen share of the total energy supply portfolio. In 2018, Hydrogen Law (Hylaw) was introduced, which removes the legal barriers to the deployment of fuel cells and hydrogen applications. It is a flagship project aimed at boosting the market uptake of hydrogen and fuel cell technologies providing market developers with a clear view of the applicable regulations while calling policymakers' attention to legal barriers to be removed. This chapter introduces a consistent framework for the Hylaw regulations that makes is a clear and precise statement and an interconnection between law and energy management policies.

Pradip M. Macwan, Pragnesh N. Dave

Ionic Liquids: Eco-friendly Substitutes for Surface and Interface Applications • 2023

The use of ionic liquids as solvents or catalysts has a notable impact. As a result, there is increasing interest in developing applications for them in a variety of synthetic reactions. The purpose of this chapter was not to be entirely complete, but rather to summarise some of the most recent advances in the use of ionic liquids in organic synthesis as a catalyst. The present chapter focuses on a general introduction to green and sustainable chemistry, as well as how it relates to homogeneous catalysis. A brief history of ILs as homogeneous catalysts is presented, various along with preparative routes and applications. Starting with their application, ILs have been used as catalysts in a variety of organic reactions. This focuses on the synthesis, significance, and applications of ILs. Although they are not particularly useful as solvents, they are now being used as catalysts in organic chemistry catalytic reactions.

C.M. Sunil, T.S. Sukanya, N.N. Asha et al.

Indian Journal Of Agricultural Research • 2025

Background: Actually, the millets are grown organically/no manures are applied even under low fertile soils resulted in poor millet production levels and leading to higher price of millets. Hence, there is need for low cost and eco-friendly technologies for getting higher productivity and sustaining the soil health. Methods: The field experiment was conducted to investigate the benefits of liquid microbial consortia and their mode of application on small millets (Proso, Little and Barnyard millet, respectively) at Zonal Agricultural Research Station, V. C. Farm, Mandya from kharif, 2020 to kharif 2022. The experimental design followed was randomized complete block design with three replications using the recommended dose of fertilizers (RDF) at various levels (100%, 85% and 70% RDF, respectively) with different mode of application of liquid microbial consortia as seed treatment, soil application and combination of both. Result: The highest grain and straw yield was realized with treatment receiving 100% RDF+Seed treatment with liquid microbial consortia (5 ml kg-1 seed) followed by soil application of liquid microbial consortia (6.25 litres/ha) mixed with 500 kg farmyard manure (FYM) and applied in furrows during sowing as compared to 100% RDF alone. This might be due to the better growth and yield parameters. The nutrient uptake by grain and straw and microbial population and available soil nutrients at harvest and B:C ratio also followed the similar trend as in case of grain and straw yield.

Alessandra Sanson, Edoardo Roncari, Stefano Boldrini et al.

Journal of Fuel Cell Science and Technology • 2010

Gadolina doped ceria (GDC) is a promising electrolyte for intermediate temperature solid oxide fuel cells (IT-SOFC). Dense layers of this material can be economically deposited by screen printing. However, the inks for this technique generally use organic compounds that can raise health and safety issues, as well as economical issues. In order to obtain a low-cost alternative to the generally accepted organic-based ink, four different blends of binders were considered to prepare water-based GDC inks. The systems were deposited onto green NiO/GDC anodes produced by tape casting and treated at 1673 K for 4 h. By choosing the right combination of solvents and binders, it was possible to obtain a dense crack-free film of GDC from a water-based system.

Murali Krishna Pasupuleti

Sustainable Architecture and Green Building: Tools for Eco-Friendly Design • 2024

Abstract This chapter explores the advancements in green building and sustainable architecture, focusing on cutting-edge tools and techniques that promote eco-friendly design. It covers key principles such as energy efficiency, water conservation, and the use of sustainable materials, while also highlighting the role of modern technologies like Building Information Modeling (BIM), Life Cycle Assessment (LCA) software, and smart building systems in optimizing the environmental performance of buildings. Case studies of high-performance green buildings and sustainable urban developments are discussed to illustrate practical applications. The chapter concludes by addressing the challenges faced in the widespread adoption of green building practices and looks ahead to future trends in sustainable architecture. Keywords: Green Building, Sustainable Architecture, Eco-Friendly Design, Energy Efficiency, Water Conservation, Building Information Modeling (BIM), Life Cycle Assessment (LCA), Smart Building Technologies, Sustainable Materials, High-Performance Buildings, Urban Development, Environmental Impact.

[object Object], [object Object], [object Object] et al.

Global NEST Journal • 2023

<p>Bioplastics made from renewable resources, such as contemporary biomass, have been developed more quickly as a result of global pollution from plastics made from petroleum, but it is still unclear how these materials will affect ecosystems. A common biopolymer that will make up 33% of the bioplastics produced in 2021 is polylactic acid (PLA). Forty-two bacterial isolates (soil, food wastes, and water wastes) were obtained, and 8 lactic acid bacteria were used for lactic acid (LA) production. These bacteria were classified into three categories, namely high, moderate and low LA producing bacteria which gave LA concentrations ranged from >1.0 g/L (3 bacteria), 0.5 to 1.0 g/L (21 bacteria) and 0.1 to 0.5 g/L (26 bacteria), respectively. The Sudan black staining method revealed that 16 bacteria out of 50 were capable of storing PLA granules, with three lactic acid bacteria referred to as Lactococcus thermophilus, Lactobacillus rhamenose, and Lactobacillus retrieria being the most efficient. The sodium dodecyl sulphate procedure was used to extract PLA from the selected LAB, and the results revealed that L. rhamnose was the most effective strain for producing both lactic acid and PLA. The most important fermentation parameters for lactic acid and polylactate polymer production were evaluated using an optimal custom (factorial) design. The interaction between three factors of selected potato oil waste, C/N ratio (48/1), and inoculum size (10%) resulted in an increase in lactic acid and polylactate polymer productivity by L. rhamenose L6, which reached 0.85 g/L, 0.96 g/L, and cell dry weight 2.33g/L, respectively.</p>

Sandeep P. Sabnis, Srinivas Seethamraju

Volume 8: Energy • 2020

Abstract Biogas, a promising alternative fuel, a substitute for fossil fuels, is predominantly a mixture of methane and carbon dioxide. Both are major greenhouse gases. Methane has a long-term effect on the environment while carbon dioxide is recycled by the plants. Hence, capture and burning of biogas to consume methane as a fuel is desired both from energy and environmental outlook. The presence of a large amount of carbon dioxide in biogas, however, impairs combustion in engines resulting into slow burning and higher hydrocarbon and carbon monoxide emissions. Dry reforming, a conversion process of biogas to synthesis gas (syngas), a mixture of hydrogen and carbon monoxide, is a catalytic process that has the potential to greatly improve biogas combustion in engines. The researchers’ focus in dry reforming, however, has been for the generation of hydrogen for fuel cells and reactants for Fischer Tropsch process in industry — this approach aims towards maximum conversion of methane and carbon dioxide. The work presented here investigates the possibility of partial conversion of biogas to harness maximum energy and reduce emissions from I.C. Engines. The published research on dry reforming of biogas has examples of high concentrations of methane in the syngas with calorific values suitable for I.C. Engine application. For example, a 50:50 v/v CH4/CO2 composition biogas has calorific value of 13.33 MJ/kg which when converted to a syngas at 550°C results in a gas with 18:42:14:26 v/v CO2/CH4/H2/CO and a calorific value of 19.96 MJ/kg). Such compositions have moderate percentage of hydrogen to act as combustion enhancer and the carbon dioxide present helps to control NOx emissions. The major contributors of energy are methane and carbon monoxide in these cases. The dry reforming reaction is an endothermic reaction, which produces hydrogen. The side reactions that happen are the reverse water gas shift reaction, which reduces hydrogen yield and the Bouduard reaction which results in carbon deposition on the catalyst surface. The reactor conditions need to be chosen appropriately, especially the reactor temperature. Simulation of dry reforming reaction using a process simulation software (Aspen Plus) is carried out to find the extent of conversion and exit syngas composition for different biogas compositions. The endothermic heat for the reactor can be provided by the heat of the engine exhaust — therefore, an opportunity exists to use waste heat recovery from the engine exhaust. However, there is a tradeoff between the reactor temperature, syngas composition going to engine inlet and the engine exhaust heat — which is investigated in this study.

Wankuson Chanasit, Kamontam Umsakul, Kumar Sudesh

Biopolymers • 2025

ABSTRACT An obstacle to the commercial application of polyhydroxyalkanoates (PHAs) and a co‐product exopolysaccharide, alginate, is their high production cost. In this study, waste cooking oil (WCO) was used as an inexpensive carbon source for biopolymer production by Pseudomonas mendocina PSU. The highest biomass of 4.60 ± 0.06 g/L and PHA concentration of 2.58 ± 0.03 g/L (accounting for about 54% DCW) were achieved with a productivity of 0.072 g/L/h under optimal conditions determined by response surface methodology. Additionally, a maximum alginate yield of 8.85 ± 0.24 g/L was obtained as the co‐product. The WCO, which primarily contained oleic acid (C18:1), palmitic acid (C16:0), and linoleic acid (C18:2) influenced the monomer composition of the produced PHA. The results demonstrated the presence of both SCL‐PHA monomers such as 3HB (3‐hydroxybutyrate) and MCL‐PHA monomers including 3HHx (3‐hydroxyhexanoate), 3HO (3‐hydroxyoctanoate), 3HD (3‐hydroxydecanoate), and 3HDD (3‐hydroxydodecanoate) in varying molar fractions. Moreover, an average molecular weight of approximately 10 4 Da and a polydispersity index of 1.58 were determined in the produced PHA, consisting predominantly of 3HB (86 mol%) when the cells were grown in 2.0% (v/v) WCO. Furthermore, the melting temperature ( T m ) and glass transition temperature ( T g ) were around 157°C and −20°C, respectively. Additionally, the produced alginate from P. mendocina PSU exhibited functional acetyl groups, which are a distinguishing feature of bacterial alginate, and showed an apparent viscosity comparable to commercial alginate from brown seaweed. These biopolymer characteristics demonstrate strong potential for biomaterial applications, adding value to WCO and reducing overall production costs.

Ming Zhao

Clean Energy Science and Technology • 2025

In today’s era of rapid technological advancements and growing emphasis on sustainability, innovative solutions across various fields are reshaping industries and addressing pressing global challenges. From the recycling of spent lithium-ion batteries to advancements in solar energy utilization, latent thermal energy storage, and chip material processing, these technologies not only tackle critical issues such as resource conservation, efficient energy use, and emission reduction but also pave the way for sustainable development by fostering technological innovation and enhancing energy system efficiency.

Adel Razek

Clean Energy Science and Technology • 2024

The daily well-being of modern humanity is closely linked to the use of different devices operating through different sources of energy conversion. Electromagnetic energy obtained from the conversion of clean energy is one of the most used in devices in this context. The use of these devices reflects the expected results, often accompanied by unwanted side effects. These undesirable side effects correspond to the interaction of artificial electromagnetic radiation with living tissues of biodiversity (One Health concept). The corresponding living tissues are related to humans, animals (domestic and wild), birds, plants, etc., and more generally to biodiversity, including the ecosystem. Therefore, these harmful effects could be reduced by intelligent and sustainable construction and protection (Responsible Attitude concept) of these devices. This article aimed to illustrate the implication of the concepts of One Health and Responsible Attitude in the management of the daily use of wireless communication tools with electromagnetic energy, as well as power transfer devices. The two concepts were first discussed. The biological effects on living tissues due to exposure to electromagnetic field radiation were analyzed in the case of humans, animals and plants. The different characteristics of the radiated field and exposed tissues influencing these effects, as well as the governing laws and mathematical modeling of the effects, were examined. Additionally, the means for protecting living tissues from electromagnetic radiation were inspected. The analyses pursued in this article were supported by examples taken from the literature.

Xianfeng Fan

Clean Energy Science and Technology • 2024

In the era of industrial revolution, from powering factories to keeping our digital world humming, energy resources are the hidden engine behind modern economic activity, fueling production, transportation, and every click of a keyboard[1]. However, these commercial endeavors generate contaminants and toxins, which are extremely harmful for the environment and public health. To overcome these concerns, the utilization of clean energy is the main focus to enhance the economic growth and environmental preservation. During this time, many researchers and academicians are pivoted to study and research on clean energy technologies. Their successful research work helped us in publishing one commentary and six review articles, centered around the efficient use of resources, sustainable development, and environmental protection, in issue 2, volume 1 of this journal. It offers readers an overview of the most recent research trends in clean energy technology.

Chenwu Wu

Clean Energy Science and Technology • 2024

All human activities are nothing more than the conversion and flow of energy, and energy flow processes that have irreversible effects on the Earth’s environment are of particular concern. Energy flow processes of interest are less often purely physical, and more often include complex chemical processes involving light, electricity, heat, and force, which are inevitably distributed in almost all human activities. Therefore, the optimization of these processes towards maximizing energy efficiency is inevitably the result of multi-physical and interdisciplinary collaborations, which will ultimately have a significant impact on the likelihood and schedule of achieving the goal of energy conservation and emission reduction. The authors of the articles in this issue, with creative thinking, rigorous arguments, and abundant data, have superbly illustrated the need for multiphysics and interdisciplinary synergy in clean energy science and technology from a wide range of perspectives.

Michael Cary

Clean Technologies • 2019

In this paper we test for convergence in access to clean energy and clean technology among nations in order to study the economic determinants of access to clean energy and clean technologies. This is important because without access to clean fuels, no global development strategy can be environmentally sustainable. After obtaining an estimated convergence rate under a conditional β -convergence model, we use a more sophisticated club convergence econometric framework and ultimately reject the hypothesis of β -convergence in favor of subgroups exhibiting intra-group convergence tendencies that are distinct from the other groups. We then employ a club convergence algorithm which groups the 93 nations studied into 8 convergence clubs based on characteristics including the percentage of the population with access to clean energy in the household and the growth rate of this percentage. Evidence that household access to clean energy and clean technology is tied to economic development and institutional quality is provided by showing that the convergence clubs not only reflect distinct strata in access to clean energy but are also strongly tied to important indicators of institutional quality.

T. E. Kuleshova, Z. Gasieva, D. V. Rusakov et al.

Биофизика • 2024

Bioelectrochemical systems based on electroactive processes in the root environment of plants are a promising direction for the combined production of green electricity and plant products. The dynamics of the electric potential differences formation in the root environment, diffuse reflection indices, fluorescence parameters of leaves, and morphometric and biochemical characteristics of lettuce varieties Chinese curly, Chinese red-green, Ballet, Cocarde, Mercury, Dubrava, Robin, and Solos F_1 hybrid are studied. The maximum electric potential difference of 430 mV was typical for the Mercury variety, and the minimum of 352 mV for the Chinese Curly variety. According to the sum of the parameters, in addition to the electrical ones, including the morphometric, biochemical, and photosynthetic characteristics, the lettuce Ballet variety was the best. In the future, based on the data obtained, it will be possible to create agrophytocenoses, including plants capable of high and stable electricity generation together with high productivity and good quality of the plant products obtained, due to the effective assimilation and conversion of light energy.

Min-Hao Chang, C. Hsueh, Jia-Hui Liao et al.

Science Discovery • 2018

Microalgae contained abundant value compositions (e.g., antioxidant polyphenolics and flavonoids, proteins) and owned significant bioelectrochemical characteristics for sustainable applications. This study tended to decipher strategy to maximize generation of value-added products through testing of electrochemical capabilities (e.g., total polyphenolics content, DPPH antioxidant activities, cyclic voltammetry). Although extracellular metabolites of microalgae might express significant electrochemical activity as electron shuttles, such metabolites apparently still inhibited microbial activities, leading to significant reduction of power generation in microbial fuel cells with metabolite supplementation. This result clearly explained why slow-growing microalgae could propagate ubiquitously even microbes were grown in much faster rates. That is, combined interactions of microalgae-bacteria co-cultures evidently provided ecologically favorable conditions for microalgal persistence due to inhibitory metabolites expressed by microalgae in co-cultures.

Harishankar Kopperi, Vishnuvardhan Mamidi, G. Suresh et al.

Green Chemistry • 2025

Developing novel chemical upcycling technologies to transform plastic wastes into economically viable chemicals is crucial to establish circular plastics economy. Present work delineated a methodology integrating chemical and bio-catalysis for converting waste PET to sustainable biofuel blendstocks.

Jiao Feng, Wenjing Yang, Yao Liu et al.

Green Chemistry • 2025

An electroactive Escherichia coli is constructed through the reasonable design and interaction of multiple electron transfer pathways and applied in a BES.

Rou-Rou Xu, Zhou Pei, Wen-Qian Wang et al.

International Journal of Environmental Research and Public Health • 2020

The judgment and assessment of remediation effect on urban black-odor river still depend on the physical-chemical parameters and lack in ecological safety effects. A set of combined biological toxicity tests were applied to evaluate the ecological effects of one urban black-odor river before and after the remediation. The special growth rate of Chlorella vulgaris and mortality rate of Daphnia magna were used to assess acute toxicity. The Salmonella Typhimurium/Reverse Mutation Assay was applied to test the mutagenicity. The tests by C. vulgaris growth showed that there was no inhibition before and after remediation by overlying water, in contrast promoted the growth of C. vulgaris. The tests by D. magna showed slight toxicity on site 3# before remediation and nontoxic after remediation. The mutagenicity of organic extracts from overlying water at all sampling sites were positive before remediation, but were eliminated after remediation except from 3 of 4 sites on TA98 strain. The addition of the liver microsomal S9 induced the positive mutagenicity on site 4# compared to S9 absence. The results clarified the applicable and the importance of the biological toxicity tests on assessing the remediation effect and potential ecological risk of urban black-odor river.

A. Osman, Mohamed Hosny, Abdelazeem S. Eltaweil et al.

Environmental Chemistry Letters • 2023

Microplastic pollution is becoming a major issue for human health due to the recent discovery of microplastics in most ecosystems. Here, we review the sources, formation, occurrence, toxicity and remediation methods of microplastics. We distinguish ocean-based and land-based sources of microplastics. Microplastics have been found in biological samples such as faeces, sputum, saliva, blood and placenta. Cancer, intestinal, pulmonary, cardiovascular, infectious and inflammatory diseases are induced or mediated by microplastics. Microplastic exposure during pregnancy and maternal period is also discussed. Remediation methods include coagulation, membrane bioreactors, sand filtration, adsorption, photocatalytic degradation, electrocoagulation and magnetic separation. Control strategies comprise reducing plastic usage, behavioural change, and using biodegradable plastics. Global plastic production has risen dramatically over the past 70 years to reach 359 million tonnes. China is the world's top producer, contributing 17.5% to global production, while Turkey generates the most plastic waste in the Mediterranean region, at 144 tonnes per day. Microplastics comprise 75% of marine waste, with land-based sources responsible for 80–90% of pollution, while ocean-based sources account for only 10–20%. Microplastics induce toxic effects on humans and animals, such as cytotoxicity, immune response, oxidative stress, barrier attributes, and genotoxicity, even at minimal dosages of 10 μg/mL. Ingestion of microplastics by marine animals results in alterations in gastrointestinal tract physiology, immune system depression, oxidative stress, cytotoxicity, differential gene expression, and growth inhibition. Furthermore, bioaccumulation of microplastics in the tissues of aquatic organisms can have adverse effects on the aquatic ecosystem, with potential transmission of microplastics to humans and birds. Changing individual behaviours and governmental actions, such as implementing bans, taxes, or pricing on plastic carrier bags, has significantly reduced plastic consumption to 8–85% in various countries worldwide. The microplastic minimisation approach follows an upside-down pyramid, starting with prevention, followed by reducing, reusing, recycling, recovering, and ending with disposal as the least preferable option.

A. Tripathi, Sujita Kumar Kar, R. Shukla

Clinical Psychopharmacology and Neuroscience • 2018

Cognitive deficits are one of the core symptoms of schizophrenia that evolve during the course of schizophrenia, after being originated even before the onset of illness. Existing pharmacological and biological treatment modalities fall short to meet the needs to improve the cognitive symptoms; hence, various cognitive remediation strategies have been adopted to address these deficits. Research evidences suggest that cognitive remediation measures improve the functioning, limit disability bettering the quality of life. The functional outcomes of cognitive remediation in schizophrenia are resultant of neurobiological changes in specific brain areas. Recent years witnessed significant innovations in cognitive remediation strategies in schizophrenia. This comprehensive review highlights the biological correlates of cognitive deficits in schizophrenia and the remedial measures with evidence base.

Rakesh Kumar, Rama Sinha, P. Sharma et al.

Processes • 2021

Fluoride is widely found in soil–water systems due to anthropogenic and geogenic activities that affect millions worldwide. Fluoride ingestion results in chronic and acute toxicity, including skeletal and dental fluorosis, neurological damage, and bone softening in humans. Therefore, this review paper summarizes biological processes for fluoride remediation, i.e., bioaccumulation in plants and microbially assisted systems. Bioremediation approaches for fluoride removal have recently gained prominence in removing fluoride ions. Plants are vulnerable to fluoride accumulation in soil, and their growth and development can be negatively affected, even with low fluoride content in the soil. The microbial bioremediation processes involve bioaccumulation, biotransformation, and biosorption. Bacterial, fungal, and algal biomass are ecologically efficient bioremediators. Most bioremediation techniques are laboratory-scale based on contaminated solutions; however, treatment of fluoride-contaminated wastewater at an industrial scale is yet to be investigated. Therefore, this review recommends the practical applicability and sustainability of microbial bioremediation of fluoride in different environments.

T. Głąb, K. Gondek, M. Mierzwa-Hersztek

Scientific Reports • 2021

Biochar and zeolite are widely used in the remediation of soil contaminated with toxic heavy metals. However, the interaction of these amendments and their effects on grass productivity have not been comprehensively summarized. The aim of this study was to investigate the biological effects of zeolite and biochar used as soil amendments in the process of remediating soil contaminated with Cd, Pb and Zn. In a pot experiment, the following treatments were applied: zeolite, biochars produced at temperatures of 350 °C and 550 °C, mixtures of biochars and zeolite, and a control treatment without any amendments. The soil amendments were tested on two grass species: tall fescue (Festuca arundinacea Schreb.) and cocksfoot (Dactylis glomerata L.). The root morphometric parameters and aboveground production were determined in 2017 and 2018. Higher biomass production was observed in the tested grasses in the treatments with zeolite alone (0.229 kg DM m−2) or mixed with the biochars (0.239 kg DM m−2) than in control treatment (0.029 kg DM m−2). Zeolite used in contaminated soil significantly affected root biomass and root morphology parameters. Zeolite application resulted in significantly higher root biomass (2.30 mg cm−3) and root length (76.61 cm cm−3) than those in the treatments without zeolite (0.29 mg cm−3 and 6.90 cm cm−3). Biochar as a soil amendment did not affect most root morphometric parameters. The application of biochars only slightly reduced the root diameter of cocksfoot. The root diameter of tall fescue was similar in all treatments (0.075 mm) except the control (0.063 mm) and biochar 550 treatments (0.067 mm), in which slightly thinner roots were observed.

E. Womack, Ashli Brown, D. Sparks

Journal of the Science of Food and Agriculture • 2014

Aflatoxins are highly toxic, mutagenic, teratogenic and carcinogenic compounds produced predominantly as secondary metabolites by certain species of fungi belonging to the Aspergillus genus. Owing to the significant health risks and economic impacts associated with the presence of aflatoxins in agricultural commodities, a considerable amount of research has been directed at finding methods to prevent toxicity. This review compiles the recent literature of methods for the detoxification and management of aflatoxin in post-harvest agricultural crops using non-biological remediation.

Cheng Zhang, Kai Yan, Changkui Fu et al.

Chemical Reviews • 2021

The applications of fluorinated molecules in bioengineering and nanotechnology are expanding rapidly with the controlled introduction of fluorine being broadly studied due to the unique properties of C-F bonds. This review will focus on the design and utility of C-F containing materials in imaging, therapeutics, and environmental applications with a central theme being the importance of controlling fluorine-fluorine interactions and understanding how such interactions impact biological behavior. Low natural abundance of fluorine is shown to provide sensitivity and background advantages for imaging and detection of a variety of diseases with 19F magnetic resonance imaging, 18F positron emission tomography and ultrasound discussed as illustrative examples. The presence of C-F bonds can also be used to tailor membrane permeability and pharmacokinetic properties of drugs and delivery agents for enhanced cell uptake and therapeutics. A key message of this review is that while the promise of C-F containing materials is significant, a subset of highly fluorinated compounds such as per- and polyfluoroalkyl substances (PFAS), have been identified as posing a potential risk to human health. The unique properties of the C-F bond and the significant potential for fluorine-fluorine interactions in PFAS structures necessitate the development of new strategies for facile and efficient environmental removal and remediation. Recent progress in the development of fluorine-containing compounds as molecular imaging and therapeutic agents will be reviewed and their design features contrasted with environmental and health risks for PFAS systems. Finally, present challenges and future directions in the exploitation of the biological aspects of fluorinated systems will be described.

A. Saka, L. Jule, Shuma Soressa et al.

Scientific Reports • 2022

Biological approach synthesis and characterization of Iron Sulfide (FeS) thin films from banana peel extract for contamination remediation of environment studied. Iron chloride, Sodium thiosulfate and Ethylene-di-amine-tetra acetate (EDTA) were used as precursor solutions without further purification. The nanoparticle of banana peel was extracted and prepared with synthesized FeS thin films and analyzed by X ray-diffraction for structural examination, Scanning electron microscope (SEM) for surface morphological analysis, Ultra-violet-visible-spectrometer (UV–Vis) and photo-luminescence spectro-photo-meter (P-L) for optical characterizations. XRD peaks are shown with recognized to (110), (200), (310), and (301) crystalline planes. The occurrence of this deflection peak are recognised the FeS crystal segment of the tetragonal crystalline systems. SEM micrographs of the films prepared biological method show the distribution of grains, which cover the surface of the substrate completely and are uniform and films deposited purely have defects. The photo-luminescence, absorbance, and transmittance strength of banana peel extract FeS thin film is greater than pure FeS thin films in which wide-ranging and symmetries groups were perceived. In the present study, the comparison of pure FeS thin films and Nano synthesized banana peel extract with FeS thin films was studied. It is observed that Nano synthesized banana fibre absorbs higher than pure FeS thin films in solar cell application. Finally, green synthesis is an ecofriendly, easy and cheap promising method for the fabrication of thin films for solar cell applications.

G. Misra, W. Smith, Madeline G. Garner et al.

New Space • 2021

This article aims to inform the development of biological perchlorate remediation schemes for the preparation of safer human Mars habitats and contaminant-free in situ resource utilization (ISRU) f...

Paul N. Cheremisinoff, Glenn Goessmann

Remediation Journal • 1992

Abstract Although many conventional physical remediation methods are viewed as proven, they often only relocate wastes to other sites or into the air. How do the emerging biological and chemical in situ methods perform in the same applications? This article reviews their results (much of it in the laboratory) as well as their promise of more complete neutralization of hazardous wastes, lower capital costs, and longer‐duration cleanup processes. The optimal method may be a combination of chemical and biological in situ techniques with physical pump‐and‐treat methods.

Zhen Xu, Chao Song, Yue Zhu et al.

Research Square • 2021

Abstract Polybrominated diphenyl ethers (PBDEs) are toxic to humans and can easily accumulate in the environment. Nanoscale zero-valent iron (NZVI) and modified NZVI have been developed to remediate PBDE contamination. However, their degradation in soil systems and their microbial toxicity have not been widely explored. In this study, NZVI supported on biomass carbon was applied to remove decabromodiphenyl ether (BDE-209) from contaminated soil. A removal efficiency of 100% was achieved within 384 h as BDE-209 reacted with 0.10 g/g soil biomass carbon NZVI particles (BC–NZVI) at pH 7.00. The reaction followed pseudo-first-order kinetics, and the BDE-209 removal efficiency increased with increasing BC–NZVI dosage and decreasing initial BDE-209 concentration, pH, and moisture content. Biological activity assays (dehydrogenase activity and soil basal respiration) were conducted to provide a preliminary risk assessment of the BC–NZVI application in BDE-209 contaminated soil. The results demonstrate that BC–NZVI has a strong potential for in situ remediation of organic-contaminated soil.

Paul E. Flathman, Bryon J. Krupp, Paul Zottola et al.

Remediation Journal • 1996

Abstract In‐situ biological solid‐phase (or land) treatment was cost‐effectively used to remediate 1,500 cubic yards (1,100 m 3 ) of contaminated soil within three months of field operation following spillage of an estimated 12,000 gallons (45,000 L) of vinyl acetate from a railroad tank car onto surface soil. The vinyl acetate rapidly hydrolyzed to acetate and acetaldehyde with concentrations ranging up to 22,000 and 3,000 mg/kg, respectively. Ethanol, a metabolic intermediate, was found to accumulate in soil to concentrations as high as 280 mg/kg. The estimate for excavation, transportation, and disposal of the contaminated soil as a special waste, and for backfilling of the excavated area, was $850,000. The cost for biological remediation of the contaminated soil was $400,000, which was less than half the cost of excavation. In‐situ biological treatments have been used to readily remove contaminants, such as acrylonitrile, styrene, butylcellosolve, ethylacrylate, and n‐butylacrylate, at other sites involving railroad incidents.

Xiu Li Liu, Lin Zhao, She Jiang Liu et al.

Advanced Materials Research • 2010

In this study, a biological permeable reactive barrier system was designed to evaluate the remediation effectiveness of BTEX-contaminated groundwater. The biological barrier using immobilized bio-beads encapsulated with calcium alginate and activated carbon fiber as microbial carrier is able to biodegrade BTEX entering the barrier system. A laboratory-scale experiment using one continuous up-flow stainless steel column was then performed to evaluate the feasibility of this designed system. The second column was filled with bio-beads immobilizing BTEX-degrading microbial consortium. Simulated BTEX-contaminated groundwater, in which dissolved oxygen (DO) content was saturated, was pumped into this system at a flow rate of 0.07ml/min. Samples from the column were analyzed for BTEX and effluent DO. Results showed that BTEX could be well removed in this biological barrier.

Seyed Morteza Naghib, Hamid Reza Garshasbi

Green Plant Extract-Based Synthesis of Multifunctional Nanoparticles and their Biological Activities • 2023

Environmental deterioration is currently a major problem for both emerging and wealthy nations. Extensive industrialization and intensive agricultural activity are the main causes of land, water, and air contamination. There are numerous conventional treatments for various environmental contaminants, but each has drawbacks. As a result, a different approach is necessary, one that is efficient, less harmful, and produces better results. In terms of cleaning up the environment, nanomaterials have garnered much interest. Nanomaterials outperform more traditional methods for environmental remediation due to their enormous surface area and strong reactivity. For particular applications, they can be altered to include new functionalities. Nanoscale materials can be very reactive due to the high surface-area to-volume ratio and a greater number of reactive sites. These traits enable greater contaminant interaction, which prompts a rapid decrease in pollutant concentration. In order to remove toxins from diverse environmental media (e.g., soil, water, and air), environmental remediation primarily uses various methods.

Karamba Kabiru Ibrahim, Mohd Arif Syed, Mohd Yunus Shukor et al.

BIOTROPIA • 2016

Cyanide and its complexes are produced by industries all over the world as waste or effluents. Biodegradation is considered to be the cheapest and the most effective method to get rid of cyanide in the environment. Several studies on different types of microorganisms that can degrade cyanide in the environment have been carried out. Hydrolytic, oxidative, reductive, and substitutive/transfer reactions are some of the common pathways used by microorganisms in cyanide degradation. Biodegradation of cyanide can occur aerobically or an-aerobically depending on the environmental conditions. Immobilised enzymes or microorganisms prove to be very effective method of degradation. Microorganisms such as Klebsiella oxytoca, Corynebacterium nitrophilous, Brevibacterium nitrophilous, Bacillus spp., Pseudomonas spp. and Rhodococcus UKMP-5M have been reported to be very effective in biodegradation of cyanide.

Elena Grebenshchikova, Natalia Shelkovkina, Natalia Gorbacheva

E3S Web of Conferences • 2020

During the construction of highways, significant damage is caused to the environment: the soil cover is degraded, vegetation cover and the natural landscape are destroyed. The issue of minimizing the negative impact of this direction on the environment was not given enough attention. Therefore, one of the main issues of environmental protection is the timely implementation of works on reclamation of disturbed lands. Land areas of temporary allotment for road construction that are subjected to mechanical impact after the stage of technical reclamation are subject to biological reclamation, which is aimed at landscaping the roadside area. To achieve these goals, we used the method of developing measures for the reclamation of disturbed land during the construction of the highway. Activities on biological remediation can be performed as a result of: the serial complexity of the species composition of plant communities, which has long co-exist with man-made recultivated territories; the launch of the rehabilitation process which can be carried out simultaneously in a multispecies complex of phytocenosis, suggesting further its sustainable functioning. As a result of biological reclamation measures, using crops that are resistant to pollutants and meliorants, it is possible to gradually reduce the content of pollutants in the soil due to natural self-cleaning processes as a result of removal of elements by plants and their leaching outside the root layer of the soil.

Sándor Guba, Viola Somogyi, Erzsébet Szabóné Bárdos

Hungarian Journal of Industry and Chemistry • 2015

Abstract The degradability of two commercially available pesticides was studied using heterogeneous photocatalytic and activated sludge treatment methods. The first pesticide contained 5% quizalofop-P-ethyl as an active ingredient and petroleum naphtha as a solvent, the latter causing difficulties both in photocatalytic and biological treatment methods. The active ingredient of the second compound was acetamiprid. The photocatalysis proved to be effective both under laboratory conditions (using UV light) and when exposed to sunlight, but the pesticides remained stable during the employed biological treatment. Preliminary information on its behaviour in soil was obtained from transport modelling.

Marijke M. A. Ferdinandy-van Vlerken

Water Science and Technology • 1998

Biological techniques can be applied in remediation of sediments contaminated with organic pollutants, such as mineral oil, PAH, PCB and chlorobenzenes. Within the period of 1989-1997 several techniques were developed from laboratory to full-scale. The chances for bioremediation lay in the relatively small environmental impact and the low costs of the techniques. Little energy is required, no emissions to soil or air occur and the natural structure of the sediments is not destroyed. The costs vary between 45 (landfarming) and 70 (reactors) Dutch Guilders per ton dry weight. The quality of the product to meet the legal standards for re-use was achieved for some, but not all, of the sediments. However, bioassays and leaching tests showed that bioremediation strongly reduces the ecotoxicity and dispersion risks of the material. Further research of the actual risks, accompanied by policy development of the standards for re-use, might increase the number of different types of sediments which can be successfully remediated by biotechnology.

M. Amélia Santos, Anna Irto, Péter Buglyó et al.

Molecules • 2022

Hydroxypyridinones (HPs) are recognized as excellent chemical tools for engineering a diversity of metal chelating agents, with high affinity for hard metal ions, exhibiting a broad range of activities and applications, namely in medical, biological and environmental contexts. They are easily made and functionalizable towards the tuning of their pharmacokinetic properties or the improving of their metal complex thermodynamic stabilities. In this review, an analysis of the recently published works on hydroxypyridinone-based ligands, that have been mostly addressed for environmental applications, namely for remediation of hard metal ion ecotoxicity in living beings and other biological matrices is carried out. In particular, herein the most recent developments in the design of new chelating systems, from bidentate mono-HP to polydentate multi-HP derivatives, with a structural diversity of soluble or solid-supported backbones are outlined. Along with the ligand design, an analysis of the relationship between their structures and activities is presented and discussed, namely associated with the metal affinity and the thermodynamic stability of the corresponding metal complexes.

GR Koerner, RM Koerner

Geosynthetic Testing for Waste Containment Applications • 1990

This paper presents the results of a biological growth study in geotextile filters used in landfill leachate collection systems. After reviewing the first year's activity, a completely new experimental approach has been taken. Using 100 mm diameter columns for the experimental incubation and flow systems, the effects of six landfill leachates are evaluated. Aerobic and anaerobic states, four different geotextiles, and soil/no soil conditions above the geotextiles are involved in the testing program. This results in 96 individual test columns. Flow data is measured regularly, and over the first six months of evaluation the following trends have been observed. • no clogging (0%–25% flow reduction) 6 of 96 columns = 7% • minor clogging (25%–50% flow reduction) 4 of 96 columns = 4% • moderate clogging (50%–75% flow reduction) 37 of 96 columns = 38% • major clogging (75%–95% flow reduction) 35 of 96 columns = 36% • severe clogging (95%–100% flow reduction) 14 of 96 columns = 15% For two of the landfill leachates, backflushing has been attempted so as to reinstitute flow. This procedure works well for the geotextile alone while not as well for the geotextile/soil columns. The exception is the nonwoven heat set geotextile. All tests are still ongoing and will be dismantled and further investigated at the end of 12 months exposure time. The experimental setup and procedure has been written up as a tentative ASTM test method and is currently in task group review.

Leslie Cordone, Chris Carlson, William Plaehn et al.

Remediation Journal • 2016

An aerobic fixed film biological treatment system has been successfully treating recovered groundwater/landfill leachate containing 1,4‐dioxane, tetrahydrofuran (THF), and other constituents since 2003. The most likely mode of 1,4‐dioxane biotransformation is via a cometabolic pathway in the presence of THF. Pilot studies conducted during the process development phase established a design basis process loading factor of 0.6 g 1,4‐dioxane and THF (as chemical oxygen demand [COD])/g total solids per day and proved the efficacy of the process. Full‐scale design includes the use of three parallel moving bed bioreactors with effluent recycle capability. Removal efficiencies in excess of 98 percent have been documented for 1,4‐dioxane. Evolving operational challenges are associated with recent trends in 1,4‐dioxane pretreatment discharge limitations in combination with ongoing process optimization and increased influent flow rate conditions associated with seasonal precipitation patterns. ©2016 Wiley Periodicals, Inc.

Yamini Vinayagam, Devi Rajeswari Vijayarangan

Research Square • 2024

Abstract Industrial effluent contains hazardous metals like lead and nickel that must be eliminated to prevent serious illnesses. The biological production of nanocomposites, which uses a range of biological resources including microbes and plant extracts as reducing and stabilizing agents, has drawn a lot of attention in recent years. The goal of the current study is to generate Y 2 O 3 nanocomposites, in a unique, feasible, and biodegradable manner by using biological substances. The characterization outcomes demonstrated that Aspergillus penicillioides was capable of extracellular synthesis of Y 2 O 3 nanocomposites with a spherical shape. Using Y 2 O 3 nanocomposites, lead and nickel were photocatalyzed. The effect of functional elements, like nanocatalyst dosage, pH, lead and nickel concentration, and the light source, was examined in the batch adsorption assessments. With a higher adsorption rate of 60% for lead and nickel concentrations of 4 µg/ml, 2 µg/ml for the nanocatalyst, and a pH of 6, the photocatalytic reduction of lead and nickel demonstrated the effectiveness of the Y 2 O 3 nanocomposites as a catalyst. The pseudo-first, second order, Langmuir, and Freundlich models were used to explain the adsorption isotherm and its kinetics. The biological applications, which included analysis of bacterial protein leakage, antioxidant activity, and antibiotic activity, were also demonstrated. Eco-friendliness of the Y 2 O 3 nanocomposite was determined by the hemolytic assay. Ultimately, our study exhibits the novel bio-based Aspergillus penicillioides -arbitrated Y 2 O 3 nanocomposites that work well as a bioremediating agent.

Richard A. Brown, James G. Mueller, Alan G. Seech et al.

Remediation Journal • 2009

Abstract While biologically mediated reductive dechlorination continues to be a significant focus of chlorinated solvent remediation, there has been an increased interest in abiotic reductive processes for the remediation of chlorinated solvents. In situ chemical reduction (ISCR) uses zero‐valent iron (ZVI)–based technologies, such as nanoscale iron and bimetallic ZVI, as well as naturally occurring reduced minerals incorporating dual‐valent iron (DVI), such as magnetite, green rust, and iron sulfides that are capable of dechlorinating solvents. A more recent area of development in ISCR has been in combining biological and abiotic processes. There are several ways in which biological and abiotic processes can be combined. First, the interaction between the two may be “causative.” For example, the Air Force Center for Engineering and the Environment's biogeochemical reductive dechlorination (BiRD) technology combines a mulch barrier with hematite and gypsum to create an iron‐sulfide‐based reducing zone. Biodegradation under sulfate‐reducing conditions produces sulfide that combines with the hematite to form iron sulfides. As such, the BiRD technology is “causative”; the biological processes create reducing minerals. The biological generation of other reducing minerals such as magnetite, siderite, and green rust is feasible and is, with magnetite, observed in nature at some petroleum sites. A second type of interaction between abiotic and biotic processes is “synergistic.” For example, biological processes can enhance the activity of reduced metals/minerals. This is the basis of the EHC® ISCR technologies, which combine ZVI with a (slowly) degradable carbon substrate. This combination rapidly creates buffered, strongly reducing conditions, which result in more complete solvent degradation (i.e., direct mineralization). The extent and level of reducing activity commonly observed are much greater when both the carbon substrate and the ZVI are present. When the carbon substrate is expended, the reducing activity due to ZVI alone is much less. The understanding of biogeochemical processes and their impact on abiotic processes is still developing. As that understanding develops, new and improved methods will be created to enhance volatile organic compound destruction. © 2009 Wiley Periodicals, Inc.