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Advanced MFC research focusing on electrode, performance. Abstract Despite solid wastes’ landfill disposal limitation due to recent European legislation, landfill leachate disp...

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What they did

System
MFC
Substrate
real wastewater
Inoculum
a mixture of activated sludge and effluent of a parent MFC treating only dairy wastewater (DW)

What worked

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Abstract

Abstract Despite solid wastes’ landfill disposal limitation due to recent European legislation, landfill leachate disposal remains a significant problem and will be for many years in the future, since its production may persist for years after a site’s closure. Among process technologies proposed for its treatment, microbial fuel cells (MFCs) can be effective, achieving both contaminant removal and simultaneous energy recovery. Start-up and operation of two dual-chamber MFCs with different electrodes’ structure, fed with mature municipal solid waste landfill leachate, are reported in this study. Influent (a mix of dairy wastewater and mature landfill leachate at varying proportions) was fed to the anodic chambers of the units, under different conditions. The maximum COD removal efficiency achieved was 84.9% at low leachate/dairy mix, and 66.3% with 7.6% coulombic efficiency (CE) at a leachate/dairy ratio of 20%. Operational issues and effects of cells’ architecture and electrode materials on systems’ performance are analyzed and discussed.

Keywords

LeachateMunicipal solid wasteWaste managementMicrobial fuel cellWastewaterBioreactor landfill

Identifiers

DOI
10.1007/s11356-020-10167-7
Journal
Environmental Science and Pollution Research
Year
2021