SHORT COMMUNICATION
Potential of Biochar-Anode in
a Ceramic-Separator Microbial Fuel Cell (CMFC)
with a Laccase-Based Air Cathode
| 1 | Department of Biotechnology, Faculty of Science, Thaksin University, Thailand |
| 2 | Department of Civil and Environmental Engineering, College of Science and Engineering,
Idaho State University, United States |
| 3 | Department of Biology, Faculty of Science, Thaksin University, Thailand |
| 4 | Department of Food Science and Technology, Faculty of Agro and Bio Industry, Thaksin University, Thailand |
| 5 | Department of Industrial Biotechnology, Faculty of Agro-Industry, Prince of Songkla University, Thailand |
CORRESPONDING AUTHOR
Online publish date: 2019-09-09
Publish date: 2019-10-23
Submission date: 2018-09-03
Final revision date: 2018-09-27
Acceptance date: 2018-10-21
Pol. J. Environ. Stud. 2020;29(1):499–503
KEYWORDS
TOPICS
ABSTRACT
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 μW/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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