Exploring characteristics of bioelectricity generation and dye decolorization of mixed and pure bacterial cultures from wine-bearing wastewater treatment.
This study uncovered microbial characteristics of bioelectricity generation and dye decolorization in single-chamber microbial fuel cells (MFCs) using activated sludge for wine-containing wastewater treatment. Phylogenetic tree analysis on 16S rRNA gene fragments indicated that the predominant strains on anodic biofilm in acclimatized MFCs were Gamma-Proteobacteria Aeromonas punctata NIU-P9, Pseudomonas plecoglossicida NIU-Y3, Pseudomonas koreensis NIU-X8, Acinetobacter junii NIU-Y8, Stenotrophomonas maltophila NIU-X2. Our findings showed that the current production capabilities of these pure strains were only ca. 10% of those of their mother activated sludge, indicating that synergistic interactions among microbes might be the most influential factor to maximize power generation in MFCs. Plus, these electrochemically active strains also performed reductive decolorization of C.I. reactive blue 160, suggesting that bioelectricity generation might be directly associated to azo dye decolorization to deal with electron transfer on anodic biofilm in MFCs.
Han
Jing-Long
JL
School of Environmental and Materials Engineering, Yan-Tai University, Yan-Tai, 264005, China.
Liu
Ying
Y
Chang
Chang-Tang
CT
Chen
Bor-Yann
BY
Chen
Wen-Ming
WM
Xu
Hui-Zhong
HZ
D000150:Acinetobacter / Q000145:classification / Q000235:genetics; D000333:Aeromonas / Q000145:classification / Q000235:genetics; D001674:Bioelectric Energy Sources; D004396:Coloring Agents / Q000378:metabolism; D004563:Electrochemistry; D020563:Gammaproteobacteria / Q000145:classification / Q000235:genetics; D010802:Phylogeny; D011549:Pseudomonas / Q000145:classification / Q000235:genetics; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D012722:Sewage / Q000382:microbiology*; D020588:Stenotrophomonas / Q000145:classification / Q000235:genetics; D018508:Water Purification / Q000379:methods*; D014920:Wine
D004396:Coloring Agents; D012336:RNA, Ribosomal, 16S; D012722:Sewage