Article
Engineering, Environmental
Changzi Guo, Xuli Zhang, Wanqin Zhao, Yi Han, Liying Pei, Yinping Hou, Dangcong Peng
Summary: A sulfide autotrophic denitrification microbial fuel cell (MFC) was established to study the removal of nitrogen and sulfur and electricity generation. The results showed that simultaneous desulfurization and nitrate removal were feasible. Higher sulfide concentration favored electricity generation. Nitrate concentration had less effect on sulfide removal and electricity production. Lower external resistance improved nitrate removal efficiency. The microbial community structure differed between the anode and cathode chambers. This research provides a new idea and method for sulfur-and nitrogen-containing wastewater treatment.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Agricultural Engineering
Yubo Liu, Ke Wang, Shaohui Zhang
Summary: A denitrifying sulfide removal microbial fuel cell was developed with a capacitor and operated in an alternate charging and discharging mode to utilize the produced electricity in-situ. Adjustment of electrode potentials and external resistance distribution was used to regulate substrate conversion, with 10-minute switching interval favoring sulfur and gaseous nitrogen formation. In-situ utilization of the produced electricity shifted microbial community structure and promoted nitrate reduction, achieving efficient total nitrogen removal and gaseous nitrogen formation.
BIORESOURCE TECHNOLOGY
(2021)
Article
Chemistry, Physical
Xiao-Li Yang, Tao Li, Yang-Guang Xia, Rajendra Prasad Singh, Hai-Liang Song, Heng Zhang, Ya-Wen Wang
Summary: This study investigated the performance of an ecological floating bed-microbial fuel cell (EFB-MFC) coupled system for electricity generation and nitrogen removal. Results showed that introducing plants into the MFC system reduced resistance and increased voltage, while also improving NH4+-N and TN removal efficiency. Water spinach system showed the best performance, but rotten roots of windmill grass released extra NH4+-N which impaired nitrogen removal. Radial oxygen loss and root exudates played significant roles in enhancing electricity generation and nitrogen removal. Electrical stimulation of enzyme activity related to nitrogen removal and migration of NH4+-N contributed to enhancing nitrogen removal.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Chemical
Yangfan Song, Xinxin Wang, Yaling Liu, Hongwei Chen, Chao Zhao, Libin Liu, Hejia Jiang, Lou Zhu, Tianchao Ai
Summary: A novel type of pulsed anaerobic fluidized bed microbial fuel cell (PAFB-MFC) was studied, which showed better electrochemical performance and shorter wastewater treatment time compared to the conventional anaerobic fluidized bed microbial fuel cell (AFB-MFC).
Article
Engineering, Chemical
Jiqiang Zhang, Zaiwang Zhang, Kun Rong, Haiying Guo, Jing Cai, Yajuan Xing, Lili Ren, Jiayun Ren, Tao Wu, Jialiang Li, Ping Zheng
Summary: This study constructed a microbial fuel cell (MFC) that can achieve simultaneous anode anaerobic ammonium oxidation (anammox) and electricity generation. The MFC showed high removal efficiencies of ammonia nitrogen, nitrite, and total nitrogen under different influent concentrations. The maximum voltage and power density achieved were also reported. However, the anode process needs further optimization as it is the bottleneck for energy recovery in MFCs.
Article
Engineering, Environmental
Lili Chen, Xiangjian Zheng, Kun Zhang, Baile Wu, Xu Pei, Weisong Chen, Xiaoli Wei, Zifeng Luo, Yongtao Li, Zhen Zhang
Summary: Nitrate addition can enhance the oxidation of AVS through autotrophic denitrification and the biodegradation of PAHs via heterotrophic denitrification. A combined approach involving nitrocellulose addition and MFC can release nitrate slowly and maintain it at a higher concentration long-term. The combined system showed high removal efficiencies of PAHs and AVS, and improved the expression of nitrogen-cycling genes.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Chemical
Yue Sun, Mahmood Qaisar, Kaiquan Wang, Bilong Chen, Jing Cai
Summary: The study found that increasing substrate concentration significantly promotes the generation of elemental sulfur, which mainly exists in the effluent of the reactor rather than in the sludge. High substrate concentration enriched the dominant genus Sulfurovum, with a relative abundance higher than 79.46%.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Environmental Sciences
Yinxiu Liang, Hongyan Zhai, Rumeng Wang, Yujing Guo, Min Ji
Summary: The use of water flow in soil microbial fuel cells (W-SMFCs) as a driving force for substrate transport was beneficial for faster startup and higher removal efficiency of benzo[a]pyrene (BaP). The interaction among microbial species was highly enhanced by water flow, facilitating BaP biodegradation in W-SMFCs.
ENVIRONMENTAL RESEARCH
(2021)
Article
Energy & Fuels
Shu-Hui Liu, Ting-Jun Zhu, Chi-Wen Lin
Summary: In this study, a composite cathode was developed using response surface methodology (RSM) by compounding biochar produced from peanut shells with conductive carbon black (CCB), aiming to reduce the cost of cathode materials and improve the removal of copper ions from wastewater.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Biochemistry & Molecular Biology
Vaidhegi Kugarajah, John Solomon, Kavinila Rajendran, Sangeetha Dharmalingam
Summary: This research explores the use of biocathodes with eggshell as a low-cost and efficient alternative to platinum-based catalysts in microbial fuel cells, resulting in improved electricity generation and nitrate removal. Microbial consortia analysis revealed the presence of denitrifying bacteria such as Pseudomonas, Azoarcus, Thauera, and Wolinella, contributing to better performance and indicating potential for scaling up MFCs.
PROCESS BIOCHEMISTRY
(2022)
Article
Environmental Sciences
Rozi Sharma, Rekha Kumari, Deepak Pant, Piyush Malaviya
Summary: This review summarizes the information on using microbial fuel cells (MFCs) fueled with urine to generate bioelectricity and recover value-added resources, and discusses the improvements, system operation, and factors enhancing the performance of MFCs.
Article
Chemistry, Physical
Chengzhi Wang, Yi Xing, Kangning Zhang, Huizi Zheng, Ya-nan Zhang, Xiaolin Zhu, Xing Yuan, Jiao Qu
Summary: A photocathode-microbial electrochemical coupling system (PC-MFC) using black phosphorus-doped titanium dioxide nanobelt (BP/TB) as a photocatalyst was constructed to degrade hydroxychloroquine (HCQ, used to treat COVID-19). The degradation efficiency of HCQ (100 mg/L) in the coupling system reached 73.7% within 8 hours, higher than photocatalysis (69.5%), MFC (25.6%), and adsorption (9.6%). The PC-MFC achieved complete degradation of HCQ (100 mg/L) within 96 hours, significantly higher than the MFC (51.1%).
JOURNAL OF POWER SOURCES
(2023)
Article
Polymer Science
Ahmet Erensoy, Nurettin cek
Summary: This study investigated the relationship between biofilm formation on the titanium-based anode electrode surface and the chemical composition of the substrate in microbial fuel cells (MFCs). MFCs made with poplar wood shavings as substrate showed that the MFC containing 20% wood shavings provided the highest open circuit voltage and power density. Optical microscopy examinations revealed the presence of Bacillus and Coccus species of bacteria in the soil structure and around the fiber of poplar wood shavings in MFCs.
Article
Environmental Sciences
Zhan Cheng, Dayong Xu, Qingyun Zhang, Zhengkai Tao, Ran Hong, Yu Chen, Xiaolu Tang, Shuai Zeng, Siyu Wang
Summary: This study investigates the impact of substrates on the treatment of nickel-containing wastewater using a microbial fuel cell coupled with constructed wetland. The introduction of granular activated carbon as a substrate resulted in the most effective removal of nickel. The study also found that the introduction of different substrates led to significant changes in the microbial community structure.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Review
Chemistry, Physical
Md. Jamal Uddin, Yeon-Koo Jeong, Wontae Lee
Summary: Microbial fuel cell (MFC) technology is proposed for efficient removal of toxic Cr(VI) in industrial wastewater, generating electricity in the process. The factors affecting this treatment and electricity generation process need to be optimized for better efficiency in both areas.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
