scholarly journals Management of Cattle Dung and Novel Bioelectricity Generation Using Microbial Fuel Cells: An Ingenious Experimental Approach

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Gagandeep Kaur ◽  
Yadwinder Singh Brar ◽  
Jaspreet Kaur ◽  
Akhil Gupta ◽  
Kamal Kant Sharma ◽  
...  

Microbial fuel cells (MFCs) are the rising modern equipment for the generation of bioelectricity from organic matters. In this study, MFCs in two formats are assembled and concurrently operated for a 30-day period in a batch mode manner. Natural biowaste cattle dung slurry with mediators is used as a substrate persistently for the enhancement of electron transfer rate and additionally for the augmentation of required electrical parameters. Under similar conditions, the MFC setups are experimented with a variety of anode-cathode material combinations, namely carbon-carbon, copper-carbon, and zinc-carbon. The performance of these MFCs during the testing period is evaluated independently and compared by plotting polarization data generated by them. It is revealed that maximum current and power densities are achieved from all these MFCs and the best attained values are 1858 mA/m2 and 1465 mW/m2, respectively, for the novel single-chamber zinc-carbon electrode MFC. The corresponding findings present that the MFC with zinc-carbon electrodes has the better power density than other MFCs. Being conductive and higher standard potential metal electrodes have improved the capability to act in place of carbon family electrodes for MFC-based power applications. Although the MFC power generation is low, but modifications in configurations, electrodes, microbe-rich biowaste, mediators, and power management may enhance the power output to a significant level for commercialization of this technology. The unique feature of this research is to explore the pertinent use of conductive metal electrodes to enhance the power generation capability of MFCs through biowaste as an alternative power source for small applications. The novelty of this research is presented through usage of conductive metal electrodes for the performance analysis of MFCs.

2021 ◽  
pp. 127583
Author(s):  
Mohammad Faisal Umar ◽  
Mohd Rafatullah ◽  
Syed Zaghum Abbas ◽  
Mohamad Nasir Mohamad Ibrahim ◽  
Norli Ismail

Author(s):  
Yao Yin ◽  
Guangtuan Huang ◽  
Ningbo Zhou ◽  
Yongdi Liu ◽  
Lehua Zhang

2017 ◽  
Vol 31 (6) ◽  
pp. 6132-6139 ◽  
Author(s):  
M. Amirul Islam ◽  
Baranitharan Ethiraj ◽  
Chin Kui Cheng ◽  
Abu Yousuf ◽  
Md. Maksudur Rahman Khan

2013 ◽  
Vol 142 ◽  
pp. 109-114 ◽  
Author(s):  
Xiaoyuan Zhang ◽  
Juan Shi ◽  
Peng Liang ◽  
Jincheng Wei ◽  
Xia Huang ◽  
...  

2012 ◽  
Vol 66 (4) ◽  
pp. 748-753 ◽  
Author(s):  
Jaecheul Yu ◽  
Younghyun Park ◽  
Haein Cho ◽  
Jieun Chun ◽  
Jiyun Seon ◽  
...  

Microbial fuel cells (MFCs) can convert chemical energy to electricity using microbes as catalysts and a variety of organic wastewaters as substrates. However, electron loss occurs when fermentable substrates are used because fermentation bacteria and methanogens are involved in electron flow from the substrates to electricity. In this study, MFCs using glucose (G-MFC), propionate (P-MFC), butyrate (B-MFC), acetate (A-MFC), and a mix (M-MFC, glucose:propionate:butyrate:acetate = 1:1:1:1) were operated in batch mode. The metabolites and microbial communities were analyzed. The current was the largest electron sink in M-, G-, B-, and A-MFCs; the initial chemical oxygen demands (CODini) involved in current production were 60.1% for M-MFC, 52.7% for G-MFC, 56.1% for B-MFC, and 68.3% for A-MFC. Most of the glucose was converted to propionate (40.6% of CODini) and acetate (21.4% of CODini) through lactate (80.3% of CODini) and butyrate (6.1% of CODini). However, an unknown source (62.0% of CODini) and the current (34.5% of CODini) were the largest and second-largest electron sinks in P-MFC. Methane gas was only detected at levels of more than 10% in G- and M-MFCs, meaning that electrochemically active bacteria (EAB) could out-compete acetoclastic methanogens. The microbial communities were different for fermentable and non-fermentable substrate-fed MFCs. Probably, bacteria related to Lactococcus spp. found in G-MFCs with fermentable substrates would be involved in both fermentation and electricity generation. Acinetobacter-like species, and Rhodobacter-like species detected in all the MFCs would be involved in oxidation of organic compounds and electricity generation.


2019 ◽  
Vol 17 (2) ◽  
pp. 100-108
Author(s):  
Aiichiro Fujinaga ◽  
Shogo Taniguchi ◽  
Ryohei Takanami ◽  
Hiroaki Ozaki ◽  
Tsuneharu Tamatani ◽  
...  

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