Open AccessOutlook for benefits of sediment microbial fuel cells with two bio‐electrodes
Author(s) -
De Schamphelaire Liesje,
Rabaey Korneel,
Boeckx Pascal,
Boon Nico,
Verstraete Willy
Publication year - 2008
Publication title -
microbial biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.287
H-Index - 74
ISSN - 1751-7915
DOI - 10.1111/j.1751-7915.2008.00042.x
Subject(s) - microbial fuel cell , cathodic protection , sediment , manganese , anode , redox , environmental chemistry , environmental science , chemistry , electrode , biochemical engineering , chemical engineering , inorganic chemistry , geology , engineering , organic chemistry , paleontology
Summary The benefits of sediment microbial fuel cells (SMFCs) go beyond energy generation for low‐power applications. Aside from producing electrical energy, SMFCs can enhance the oxidation of reduced compounds at the anode, thus bringing about the removal of excessive or unwanted reducing equivalents from submerged soils. Moreover, an SMFC could be applied to control redox‐dependent processes in sediment layers. Several cathodic reactions that may drive these sediment oxidation reactions are examined. Special attention is given to two biologically mediated cathodic reactions, respectively employing an oxygen reduction and a manganese cycle. Both reactions imply a low cost and a high electrode potential and are of interest for reactor‐type MFCs as well as for SMFCs.