PMID- 29518621 OWN - NLM STAT- MEDLINE DCOM- 20180717 LR - 20180717 IS - 1878-562X (Electronic) IS - 1567-5394 (Linking) VI - 122 DP - 2018 Aug TI - Bacterial electroactivity and viability depends on the carbon nanotube-coated sponge anode used in a microbial fuel cell. PG - 26-31 LID - S1567-5394(17)30328-6 [pii] LID - 10.1016/j.bioelechem.2018.02.008 [doi] AB - The anode material is vital to improve the power generation of a microbial fuel cell (MFC). In this study, a carbon nanotube (CNT)-coated sponge with macro-porous structure, high surface area, and high conductivity was constructed as an anode to encapsulate Escherichia coli K12 (E. coli K12) cells. To achieve high power generation of the MFC, the optimal concentration of the CNT coating the sponge was found to be 30mgmL(-1). At this concentration, a maximum power density of 787Wm(-3) and a chemical oxygen demand (COD) removal of 80.9% were obtained with a long stable electricity generation process in batch mode. This indicates that the biofilm on the CNT (30mgmL(-1))-coated sponge possessed excellent electroactivity and stability. Scanning electron microscope (SEM) images confirmed that the CNT-coated sponge provided a suitable microenvironment for E. coli K12 cells to maintain their attachment and colonization. Additionally, a CNT-dependent viability phenomenon of the E. coli K12 cells was discovered after electricity generation. This CNT-dependent viability of the E. coli K12 cells was stable and sustainable after storage at -20 degrees C in a milk tube for one year. CI - Copyright (c) 2018 Elsevier B.V. All rights reserved. FAU - Ma, Hanyue AU - Ma H AD - State Key Laboratory of Microbial Technology, Shandong University, Jinan 250100, PR China. FAU - Xia, Tian AU - Xia T AD - State Key Laboratory of Microbial Technology, Shandong University, Jinan 250100, PR China. FAU - Bian, Congcong AU - Bian C AD - State Key Laboratory of Microbial Technology, Shandong University, Jinan 250100, PR China. FAU - Sun, Huihui AU - Sun H AD - State Key Laboratory of Microbial Technology, Shandong University, Jinan 250100, PR China. FAU - Liu, Zhuang AU - Liu Z AD - State Key Laboratory of Microbial Technology, Shandong University, Jinan 250100, PR China. FAU - Wu, Chao AU - Wu C AD - State Key Laboratory of Microbial Technology, Shandong University, Jinan 250100, PR China. FAU - Wang, Xia AU - Wang X AD - State Key Laboratory of Microbial Technology, Shandong University, Jinan 250100, PR China. Electronic address: ghwx@sdu.edu.cn. FAU - Xu, Ping AU - Xu P AD - State Key Laboratory of Microbial Technology, Shandong University, Jinan 250100, PR China. LA - eng PT - Journal Article DEP - 20180227 PL - Netherlands TA - Bioelectrochemistry JT - Bioelectrochemistry (Amsterdam, Netherlands) JID - 100953583 RN - 0 (Nanotubes, Carbon) SB - IM MH - Bioelectric Energy Sources/*microbiology MH - Biofilms/growth & development MH - Biological Oxygen Demand Analysis MH - Cells, Immobilized/chemistry/cytology/physiology MH - Electric Conductivity MH - Electricity MH - Electrodes MH - Escherichia coli K12/chemistry/*cytology/physiology MH - Microbial Viability MH - Nanotubes, Carbon/*chemistry OTO - NOTNLM OT - CNT-dependent viability OT - Carbon nanotube OT - Electrogenic activity OT - Escherichia coli K12 OT - Microbial fuel cell EDAT- 2018/03/09 06:00 MHDA- 2018/07/18 06:00 CRDT- 2018/03/09 06:00 PHST- 2017/06/22 00:00 [received] PHST- 2018/02/23 00:00 [revised] PHST- 2018/02/25 00:00 [accepted] PHST- 2018/03/09 06:00 [pubmed] PHST- 2018/07/18 06:00 [medline] PHST- 2018/03/09 06:00 [entrez] AID - S1567-5394(17)30328-6 [pii] AID - 10.1016/j.bioelechem.2018.02.008 [doi] PST - ppublish SO - Bioelectrochemistry. 2018 Aug;122:26-31. doi: 10.1016/j.bioelechem.2018.02.008. Epub 2018 Feb 27.