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Potential of Biochar-Anode in a Ceramic-Separator Microbial Fuel Cell (CMFC) with a Laccase-Based Air Cathode
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Potential of Biochar-Anode in a Ceramic-Separator Microbial Fuel Cell (CMFC) with a Laccase-Based Air Cathode
Department of Biotechnology, Faculty of Science, Thaksin University, Thailand
Department of Civil and Environmental Engineering, College of Science and Engineering, Idaho State University, United States
Department of Biology, Faculty of Science, Thaksin University, Thailand
Department of Food Science and Technology, Faculty of Agro and Bio Industry, Thaksin University, Thailand
Department of Industrial Biotechnology, Faculty of Agro-Industry, Prince of Songkla University, Thailand
Thaksin University, 222 Banprao, Paphayom, 93210 Phathalung, Thailand
Final revision date: 2018-09-27
Online publication date: 2019-09-09
Pol. J. Environ. Stud. 2020;29(1):499–503
A cost-effective biochar derived from rubber tree sawdust was prepared by low-temperature pyrolysis at 500ºC for 2 h. The biochar was placed as an anode electrode in the anode chamber of the novel model ceramic-separator microbial fuel cell (CMFC) with a laccase-based air cathode. The rubber wastewater (with 500 mg/L sulfate and 1000 mg/L COD) was used as an anolyte. Maximal volumetric power density (PD) of 3.26±0.08 uW/m3, maximal volumetric current density of 3.20±0.07 mA/m3, and system internal resistance of 1002 Ω were obtained. The post-treatment results showed sulfate removal and COD removal efficiencies of 88.26±1.29% and 89.77±0.45%, respectively. Our work provided a novel model of a low-cost and economically friendly MFC system. Moreover, this work demonstrated a potential route based on sustainable and economical biochar as a bio-anode for wastewater treatment in an MFC.
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