Perspective of harnessing energy from landfill leachate via microbial fuel cells: novel biofuels and electrogenic physiologies.
Appl Microbiol Biotechnol
; 99(19): 7827-36, 2015 Oct.
Article
em En
| MEDLINE
| ID: mdl-26239072
ABSTRACT
Organic carbon, nitrogen, and sulfur are highly concentrated in municipal solid waste (MSW) landfill leachate, which usually frustrates conventional leachate treatment technologies from the perspective of energy costs. Therefore, the possibility of converting leachate to a new energy source via microbial fuel cell (MFC) technology has been examined recently. This paper summarizes the power output and energy recovery efficiency of the leachate-fed MFCs according to different feeding patterns, cell structures, and loading rates. Also, we assess potential energy-generating chemicals in leachate like nitrogen and sulfur compounds and propose alternative pathways, which may lift strict ratios between organic carbon and nitrogen content in conventional denitrification of leachate and are expected to achieve a higher voltage than traditional organic-oxygen based cells. Although currently power output of leachate-fed MFCs is limited, it seems well possible that dynamic characteristics of MSW leachates and microbial physiologies underlying some bio-electrochemically efficient activities (e.g., direct interspecies electron transfer) could be stimulated in MFC systems to improve the present status.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Bactérias
/
Poluentes Químicos da Água
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Fontes de Energia Bioelétrica
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Biocombustíveis
Idioma:
En
Ano de publicação:
2015
Tipo de documento:
Article