Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 287, Issue -, Pages 7-15Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2015.01.036
Keywords
Black water agglomerate; Cyanobacterial blooms; Lake; Microbial community; Sediment microbial fuel cell
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Funding
- Special Foundation on Water Pollution Control and Treatment of China [2012ZX07101-010]
- National Natural Science Foundation of China [51379199]
- 135 project of Nanjing Institute of Geography and Limnology, CAS [NIGLAS2012135008]
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Settlement of cyanobacterial bloom biomass (CBS) into sediments in eutrophic lakes often induced the occurrence of black water agglomerate and then water quality deterioration. This study investigated the effect of sediment microbial fuel cell (SMFC) on CBB removal in sediments and related water pollution. Sediment bulking and subsequent black water from decomposition of settled CBB happened without SMFC, but were not observed over 100-day experiments with SMFC employment. While CBB in sediments improved power production from SMFC, the removal efficiency of organic matters in CBB-amended sediments with SMFC was significantly lower than that without SMFC. Pyrosequencing analysis showed higher abundances of the fermentative Clostridium and acetoclastic methanogen in CBB-amended bulk sediments without SMFC than with SMFC at the end of experiments. Obviously, SMFC operation changed the microbial community in CBB-amended sediments, and delayed the CBB degradation against sediment bulking. Thus, SMFC could be potentially applied as pollution prevention in CBB-settled and sensitive zones in shallow lakes. (C) 2015 Elsevier B.V. All rights reserved.
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