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Toxicity Response of Electroactive Microbial Biofilms—A Decisive Feature for Potential Biosensor and Power Source Applications
Author(s) -
Patil Sunil,
Harnisch Falk,
Schröder Uwe
Publication year - 2010
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201000218
Subject(s) - biofilm , biocide , chemistry , microbial fuel cell , chloramine , antimicrobial , wastewater , microbiology and biotechnology , disinfectant , ecotoxicity , environmental chemistry , bacteria , chlorine , electrode , toxicity , organic chemistry , anode , biology , environmental engineering , environmental science , genetics
Herein, we investigate the effect of exemplary biocides on wastewater‐derived electroactive microbial biofilms. We show that the current response of these biofilms as a measure of their bioelectrocatalytic performance is not affected by the presence of antimicrobial compounds such as the sulfonamide‐based antibiotics sulfamethaxozole and sulfadiazin, the disinfectant chloramine B and the metal ions Cu 2+ , Ag + , Pb 2+ , and Hg 2+ , even at concentrations an order of magnitude higher than average concentrations of these compounds in wastewaters. In contrast to the electroactive biofilms, planktonic cells of the same origin, studied in a mediator‐based microbial fuel cell, are massively affected by the presence of the antimicrobial agents.