Manisha Verma, Vishal Mishra

SSRN Electronic Journal • 2021

Yana Mersinkova, Hyusein Yemendzhiev

Zeitschrift für Naturforschung C • 2024

Abstract Bio-electrochemical Systems (BES), particularly Microbial Fuel Cells (MFC), have emerged as promising technologies in environmental biotechnology. This study focused on optimizing the anode bacterial culture immobilization process to enhance BES performance. The investigation combines and modifies two key immobilization methods: covalent bonding with glutaraldehyde and inclusion in a chitosan gel in order to meet the criteria and requirements of the bio-anodes in MFC. The performance of MFCs with immobilized and suspended cultures was compared in parallel experiments. Both types showed similar substrate utilization dynamics with slight advantage of the immobilized bio-anode considering the lower concentration of biomass. The immobilized MFC exhibited higher power generation and metabolic activity, as well. Probably, this is due to improved anodic respiration and higher coulombic efficiency of the reactor. Analysis of organic acids content supported this conclusion showing significant inhibition of the fermentation products production in the MFC reactor with immobilized anode culture.

John Solomon, Sangeetha Dharmalingam

Fuel • 2024

Cen Bi, Qing Wen, Ye Chen et al.

Journal of Applied Electrochemistry • 2024

Weiwei Li, Xiaoyu Wang, Kaiyuan Pei et al.

Journal of Power Sources • 2025

Ali Rezaei, Zeinab Karami, Fatemeh Feli et al.

Fuel • 2023

Khurram Tahir, Waheed Miran, Jiseon Jang et al.

Chemosphere • 2021

Nawaz A

Petroleum & Petrochemical Engineering Journal • 2023

In this study, a wet proof multiple air cathode microbial fuel cell that generates bioelectricity by biodegradation of organic matter was fabricated. In this, platinum coated (0.5 mg/cm2) carbon cloth was used as air cathode and graphite rod was used as anode. The maximum power produced by MFC was 1.65042, 0.66951, 0.425061 mW on the 2nd day of operation with 1K, 3K, 5K ohm external resistance respectively. The maximum open circuit voltage and current given by MFC was 1.557 mV and 1.06 mA respectively incorporated with 1 K ohm external resistance. It was seen that open circuit voltage (OCV) initially increases with time due to increase in microbial activity but after that there is drop in voltage possibly due to decline of available substrate for microbial population. Maximum bacterial count of 90 ×105 CFU was observed on the 3rd day of operation.

Xia Hu, Jiangzhou Qin, Yubao Wang et al.

Journal of Colloid and Interface Science • 2022

K. Gunaseelan, Purnendra Singh Rajput, Rijo Rajumon et al.

Journal of Power Sources • 2024

Haseeb Ashraf, Muhammad Waseem Mumtaz, Haamid Jamil et al.

Catalysts • 2024

Water pollution is an alarming and critical environmental challenge that demands immediate attention. In addition to this, the world is also facing an energy crisis of ever-increasing proportions. Managing these issues through a sustainable approach is the need of the hour. In this context, microbial fuel cell (MFC) technology, with its dual capability to treat wastewater with simultaneous power generation, is gaining recognition as a sustainable solution. The current study was designed to evaluate the impact of a modified MFC anode, i.e., CoFe2O4@CF, Nb2C-MXene@CF, and CoFe2O4/Nb2C-MXene@CF, on the performance of MFC technology. A hydrothermal technique was used to synthesize CoFe2O4 and Nb2C-MXene, followed by characterization using XRD, SEM, and EDX tools. The results demonstrated that CoFe2O4/Nb2C-MXene@CF significantly enhanced the working performance of a MFC as compared to CoFe2O4@CF and Nb2C-MXene@CF. The MFC with this configuration produces a stable voltage (699.8 mV), coulombic efficiency (23.8%), COD removal (84%), and power density (394.272 mWm−2), with corresponding current density (888 mAm−2). These improvements were possibly due to the excellent electrocatalytic activity and strong biocompatibility of the modifier. Conclusively, the CoFe2O4/Nb2C-MXene composite is ascertained to be an emphatic anode material for MFCs with superior characteristics.

Fatemeh Oveisi, Narges Fallah, Bahram Nasernejad

Fuel • 2021

Xia Hu, Yiping Huang, Yubao Wang et al.

SSRN Electronic Journal • 2021

Quang Anh Tuan Le, Hee Gon Kim, Yong Hwan Kim

Enzyme and Microbial Technology • 2018

Haiman Wang, Youpeng Qu, Da Li et al.

Scientific Reports • 2016

Abstract A continuous stirred microbial electrochemical reactor (CSMER), comprising of a complete mixing zone (CMZ) and microbial electrochemical zone (MEZ), was used for brewery wastewater treatment. The system realized 75.4 ± 5.7% of TCOD and 64.9 ± 4.9% of TSS when fed with brewery wastewater concomitantly achieving an average maximum power density of 304 ± 31 m W m −2 . Cascade utilization of organic matters made the CSMER remove a wider range of substrates compared with a continuous stirred tank reactor (CSTR), in which process 79.1 ± 5.6% of soluble protein and 86.6 ± 2.2% of soluble carbohydrates were degraded by anaerobic digestion in the CMZ and short-chain volatile fatty acids were further decomposed and generated current in the MEZ. Co-existence of fermentative bacteria ( Clostridium and Bacteroides , 19.7% and 5.0%), acetogenic bacteria ( Syntrophobacter , 20.8%), methanogenic archaea ( Methanosaeta and Methanobacterium , 40.3% and 38.4%) and exoelectrogens ( Geobacter , 12.4%) as well as a clear spatial distribution and syntrophic interaction among them contributed to the cascade degradation process in CSMER. The CSMER shows great promise for practical wastewater treatment application due to high pre-hydrolysis and acidification rate, high energy recovery and low capital cost.

Qianwei Li, Geoffrey Michael Gadd

Microbial Biotechnology • 2017

Dazhang Yang, Naixin Wang, JingXie et al.

International Journal of Electrochemical Science • 2020

Yakui Mu, Min Zeng, Xin Wu et al.

International Journal of Electrochemical Science • 2017

Chao Ma, Shuang-Yuan Tan

International Journal of Electrochemical Science • 2020

Qinzheng Yang, Dexue Luo, Jing Yang et al.

International Journal of Electrochemical Science • 2018

Schizophrenia is a neurodegenerative disease with personality degradation, changes in behavior, cognition, affective disorder and reduced socio-professional insertion. Early diagnosis is necessary and maintenance is ensured by antipsychotic treatment and for non-compliant patients there is an alternative to depot medication that greatly improves therapeutic adherence. The study presents the case of a 43-year-old patient diagnosed with paranoid schizophrenia using the Diagnostic and Statistical Manual of Mental Disorders V-TR criteria that showed a favorable evolution under depot treatment.

Koffi OE, Bile BE

Journal of Microbial & Biochemical Technology • 2015

Jaecheul Yu, Sunwon Kim, O-Seob Kwon

Journal of Industrial Microbiology and Biotechnology • 2019

Abstract Microbial electrochemical technology (MET) that can harvest electricity/valuable materials and enhance the efficiency of conventional biological processes through the redox reaction of organic/inorganic compounds has attracted considerable attention. MET-based anaerobic digestion (AD) systems treating swine manure were operated at different applied voltages (0.1, 0.3, 0.5, 0.7, and 0.9 V) and temperatures (25, 35, and 45 °C). Among the MET-based AD systems with different applied voltages at 35 °C, M4 at 0.7 V showed the highest methane production (2.96 m3-CH4/m3) and methane yield (0.64 m3-CH4/kg-VS). The methane production and yield increased with increasing temperature at an applied voltage of 0.7 V. Nevertheless, the MET-based AD systems (LM at 25 °C and 0.7V) showed competitive AD performance (2.33 m3-CH4/m3 and 0.53 m3-CH4/VS) compared with the conventional AD system (35 °C). The microbial community was affected by the applied voltage and temperature, and hydrogenotrophic methanogens such as M. flavescens, M. hungatei, and M. thermautotrophicus were mainly responsible for methane production in MET-based AD systems. Therefore, the methane production can be enhanced by an applied voltage or by direct interspecies electron transfer because M. flavescens and M. thermautotrophicus were especially predominant in cathode of MET-based AD systems. The MET-based AD systems can help enhance biogas production from swine manure with no significant change in methane content. Furthermore, MET-based AD systems will be a promising AD system through low material development and the optimal operation.

Unknown Author

Abasyn Journal Life Sciences • 2017

Microbial fuel cell (MFC) is one of the promising fuel cell technologies. MFCs offer a breakthrough for the treatment of wastewater coupled with energy generation. However, their applications are mostly limited to laboratories. Present research is focused on conducting the biological treatment of wastewater originated from fermentation industry using microbial fuel cell (MFC) through the microbes to achieve the wastewater treatment as well as renewable energy generation. The efficiency of MFC was studied at different operating and nutritional conditions, including pH, temperature, aeration rate and substrate concentration with biocatalyst Saccharomyces servisa. The open-circuit maximum voltage generated 2100 mv and using 50 Ω resister given 1800 mv. Numerous parametric effect was measured by altering the value of aeration rate from 20-35 mL/min with 5 mL/min step size; pH from 6-9 with step size pH 1, and substrate from 25-100% with step size 25%. From above discussed parameter power and current density were maximum at pH 8 about 725 mv/l and 350 mA. Results suggested that utilization of fermented sludge in MFC could give direction to handle the problem of fermentation industries and also to overcome a small fraction of energy crisis. Keywords: Electricity generation, Primary fermented sludge, Microbial fuel cell

Xinghua, Hanjie Wu

International Journal of Electrochemical Science • 2016

Ainara Domínguez‐Garay, Jose Rodrigo Quejigo, Ulrike Dörfler et al.

Microbial Biotechnology • 2017

Summary The absence of suitable terminal electron acceptors ( TEA ) in soil might limit the oxidative metabolism of environmental microbial populations. Bioelectroventing is a bioelectrochemical strategy that aims to enhance the biodegradation of a pollutant in the environment by overcoming the electron acceptor limitation and maximizing metabolic oxidation. Microbial electroremediating cells ( MERC s) are devices that can perform such a bioelectroventing . We also report an overall profile of the 14 C‐ ATR metabolites and 14 C mass balance in response to the different treatments. The objective of this work was to use MERC principles, under different configurations, to stimulate soil bacteria to achieve the complete biodegradation of the herbicide 14 C‐atrazine ( ATR ) to 14 CO 2 in soils. Our study concludes that using electrodes at a positive potential [+600 mV (versus Ag/AgCl)] ATR mineralization was enhanced by 20‐fold when compared to natural attenuation in electrode‐free controls. Furthermore, ecotoxicological analysis of the soil after the bioelectroventing treatment revealed an effective clean‐up in < 20 days. The impact of electrodes on soil bioremediation suggests a promising future for this emerging environmental technology.

Xinghua Liang, Hanjie Wu, Haiyan Chen

International Journal of Electrochemical Science • 2016

Fei Tong, Jie Gong, Jinlong Jiang et al.

International Journal of Electrochemical Science • 2020

Liping Fan, Lulu Zhang

International Journal of Electrochemical Science • 2018

Oskar Modin, Nafis Fuad, Sebastien Rauch

Electrochimica Acta • 2017

Xuerong Zai, Zhiwei Duan, Wei Chen et al.

Journal of Ocean University of China • 2019

Bhim Sen Thapa, S. Seetharaman, Raghuram Chetty et al.

Enzyme and Microbial Technology • 2019

Ehsan Direkvandi, Tahereh Mohammadabadi, Abdelfattah Z M Salem

Translational Animal Science • 2020

Abstract Arabi lambs (n =28; body weight = 24 ± 3.7 kg; average age = 120 ± 8 days) were used to investigate the effect of microbial additives on growth performance, microbial protein synthesis and rumen microbial population of fattening lamb based on completely randomized design. Four treatments were studied: (1) control (without additive; CON); (2) Lactobacillus fermentum and L. plantarum (FP); (3) Saccharomyces cerevisiae (SC) plus FP (SCFP); and (4) Megasphaera elsdenii plus SCFP (MSCFP). Lambs were inoculated before morning feeding (daily oral dosed) with a 50 mL microbial suspension as follows: FP, 50 mL bacterial suspension containing 4.5 × 108 colony-forming unit per day (cfu/d) of L. plantarum and L. fermentum (in ratio 50:50); SCFP, 50 mL microbial suspension containing 4.5 × 108 cfu/d FP and 1.4 × 1010 cfu/d SC; MSCFP, 50 mL microbial suspension containing 4.5 × 108 cfu/d Me, 4.5 × 108 cfu/d FP and 1.4 × 1010 cfu/d SC. Feed intake and body weight of lambs were not affected by microbial additives. Average daily gain and feed efficiency were increased on day 0 to 21. The highest concentration of uric acid, total excreted purine derivatives (PD), microbial N, microbial CP, and metabolizable protein were in MSCFP lambs. The ruminal population of Ruminococcus albus and Ruminococcus flavefaciens was higher in MSCFP and SCFP than CON and FP lambs. The highest and the lowest abundance of M. elsdenii and methanogen respectively was observed in lambs fed on microbial additives. The tendency to improve growth performance vs. CON may be due to improvements in microbial protein synthesis and microbial populations, especially fiber-degrading bacteria. The decrease in the population of methanogens as a result of the use of microbial additives is another positive result.

Chong Liu

ECS Meeting Abstracts • 2020

Microorganisms are powerful biocatalysts that can fulfill chanllagning chemical reactions at ambient conditions. Interfacing microorganisms with electrochemistry offers a viable route to achieve a distributed electristry-driven chemical synthesis with renewable energy. Here we describe our progress at the microibal-materials interface for electrochemical reduction of CO 2 and N 2 , with advanced design of nanomaterials.

Bipro Ranjan Dhar, Hodon Ryu, Jorge W. Santo Domingo et al.

Journal of Power Sources • 2016

Mounika Kodali, Rohan Gokhale, Carlo Santoro et al.

Journal of The Electrochemical Society • 2016

Z. Zafar, K. Ayaz, M. H. Nasir et al.

International Journal of Environmental Science and Technology • 2018

Jiannan Li, Yanling Yu, Dahong Chen et al.

Bioresource Technology • 2020

The hydrophilic three-dimensional (3D) structure of graphene materials was produced with reducing agent-ethylene glycol through hydrothermal reduction. Numerous microorganisms with diverse community structure were established in anode surface, as the hydrophilicity of the graphene anode increased; more populations of Proteobacteria and Firmicutes families were identified in a higher hydrophilic anode. In addition, the start-up time of a microbial fuel cell (MFC) equipped with hydrophilic 3D graphene anode was only 43 h, which is much shorter than traditional 3D graphene-based anode systems. The most hydrophilic anode exhibited the maximal power density of 583.8 W m -3 , 5 times larger than the least hydrophilic one. The content of oxygen in graphene materials improving hydrophilicity would play an important role in enhancing power density. This study proves that hydrophilic 3D graphene materials as the anode can improve MFC performance and start-up time.

Chao-Chin Chang, Wade Kao, Chang-Ping Yu

Chemical Engineering Journal • 2020

Li-ping Fan, Tian Gao

International Journal of Electrochemical Science • 2018

Piyush Kumar, Ram Prakash Bharti

Journal of The Electrochemical Society • 2018