Effect of copper ions on glucose fermentation pathways in bioelectrochemical system

Zhang，Yaping1,3; Xu，Yangao1; Chen，Xi2; Chen，Caiyun1; Sun，Jian1; Bai，Xiaoyan1; Yuan，Yong1

2021-06-01

10.1016/j.chemosphere.2021.129627

CHEMOSPHERE   影响因子和分区

0045-6535

1879-1298

Toxic metal ions were previously found to be effective removed by anodic biofilms under the coexistence of organics in bioelectrochemical system (BES). However, the effect of toxic metal ions on the organics fermentation pathways remains unclear. To investigate the pathway systematically, the glucose fermentation pathways were discussed under different Cu concentrations. After introducing Cu, more acetate and less propionate were observed, implying that the metabolic reaction of glucose fermentation altered from mixed acid type to acetogenesis type. This pattern produced more “food” (acetate or hydrogen) for methanogens, thus, the methane content increased by 19.67%, 39.51%, and 27.71% in the presence of 0.1, 1, and 7 mg L Cu compared to the blank, respectively. Increased Cu concentrations resulted in the decrease of current production, which was associated with the decrease of electricigen (Geobacter). Consistent with the change of fermentation type, the fermenters (Klebsiella and norank_f__norank_o__Bacteroidales) that related to the production of acetate increased, while the dominant methanogens (Methaospirillum) didn't decrease until the Cu concentration reached 7 mg L.

Anodic biofilms Glucose fermentation pathways Microbial community Toxic metals

SCI ; EI

英语

通讯

WOS:000635594700037

20210409818385

Bacteria ; Copper ; Glucose ; Metal ions ; Methanogens ; Volatile fatty acids

Biology:461.9 ; Metallurgy:531.1 ; Copper:544.1 ; Organic Compounds:804.1

ENVIRONMENT/ECOLOGY

2-s2.0-85099631171

Scopus

1.School of Environmental Science and Engineering,Institute of Environmental,Health and Pollution Control,Guangdong University of Technology,Guangzhou,510006,China
2.South China Institute of Environmental Science,Ministry of ecology and Environment of PR China,Guangzhou,510655,China
3.Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control,Southern University of Science and Technology,Shenzhen,518055,China

Zhang，Yaping,Xu，Yangao,Chen，Xi,et al. Effect of copper ions on glucose fermentation pathways in bioelectrochemical system[J]. CHEMOSPHERE,2021,272.

Zhang，Yaping.,Xu，Yangao.,Chen，Xi.,Chen，Caiyun.,Sun，Jian.,...&Yuan，Yong.(2021).Effect of copper ions on glucose fermentation pathways in bioelectrochemical system.CHEMOSPHERE,272.

Zhang，Yaping,et al."Effect of copper ions on glucose fermentation pathways in bioelectrochemical system".CHEMOSPHERE 272(2021).