Advanced search
1 file | 2.18 MB

Electrical stimulation improves microbial salinity resistance and organofluorine removal in bioelectrochemical systems

Author
Organization
Abstract
Fed batch bioelectrochemical systems (BESs) based on electrical stimulation were used to treat p-fluoronitrobenzene (p-FNB) wastewater at high salinities. At a NaCl concentration of 40 g/liter, p-FNB was removed 100% in 96 h in the BES, whereas in the biotic control (BC) (absence of current), p-FNB removal was only 10%. By increasing NaCl concentrations from 0 g/liter to 40 g/liter, defluorination efficiency decreased around 40% in the BES, and in the BC it was completely ceased. p-FNB was mineralized by 30% in the BES and hardly in the BC. Microorganisms were able to store 3.8 and 0.7 times more K+ and Na+ intracellularly in the BES than in the BC. Following the same trend, the ratio of protein to soluble polysaccharide increased from 3.1 to 7.8 as the NaCl increased from 0 to 40 g/liter. Both trends raise speculation that an electrical stimulation drives microbial preference toward K+ and protein accumulation to tolerate salinity. These findings are in accordance with an enrichment of halophilic organisms in the BES. Halobacterium dominated in the BES by 56.8% at a NaCl concentration of 40 g/liter, while its abundance was found as low as 17.5% in the BC. These findings propose a new method of electrical stimulation to improve microbial salinity resistance.
Keywords
P-FLUORONITROBENZENE, HALOPHILIC BACTERIAL COMMUNITY, SEQUENCING BATCH REACTOR, WASTE-WATER, GRANULAR SLUDGE, DEGRADATION, ECOLOGY, STRESS, CELLS

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 2.18 MB

Citation

Please use this url to cite or link to this publication:

Chicago
Feng, Huajun, Xueqin Zhang, Kun Guo, Eleni Vaiopoulou, Dongsheng Shen, Yuyang Long, Jun Yin, and Meizhen Wang. 2015. “Electrical Stimulation Improves Microbial Salinity Resistance and Organofluorine Removal in Bioelectrochemical Systems.” Applied and Environmental Microbiology 81 (11): 3737–3744.
APA
Feng, H., Zhang, X., Guo, K., Vaiopoulou, E., Shen, D., Long, Y., Yin, J., et al. (2015). Electrical stimulation improves microbial salinity resistance and organofluorine removal in bioelectrochemical systems. APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 81(11), 3737–3744.
Vancouver
1.
Feng H, Zhang X, Guo K, Vaiopoulou E, Shen D, Long Y, et al. Electrical stimulation improves microbial salinity resistance and organofluorine removal in bioelectrochemical systems. APPLIED AND ENVIRONMENTAL MICROBIOLOGY. 2015;81(11):3737–44.
MLA
Feng, Huajun, Xueqin Zhang, Kun Guo, et al. “Electrical Stimulation Improves Microbial Salinity Resistance and Organofluorine Removal in Bioelectrochemical Systems.” APPLIED AND ENVIRONMENTAL MICROBIOLOGY 81.11 (2015): 3737–3744. Print.
@article{5970566,
  abstract     = {Fed batch bioelectrochemical systems (BESs) based on electrical stimulation were used to treat p-fluoronitrobenzene (p-FNB) wastewater at high salinities. At a NaCl concentration of 40 g/liter, p-FNB was removed 100\% in 96 h in the BES, whereas in the biotic control (BC) (absence of current), p-FNB removal was only 10\%. By increasing NaCl concentrations from 0 g/liter to 40 g/liter, defluorination efficiency decreased around 40\% in the BES, and in the BC it was completely ceased. p-FNB was mineralized by 30\% in the BES and hardly in the BC. Microorganisms were able to store 3.8 and 0.7 times more K+ and Na+ intracellularly in the BES than in the BC. Following the same trend, the ratio of protein to soluble polysaccharide increased from 3.1 to 7.8 as the NaCl increased from 0 to 40 g/liter. Both trends raise speculation that an electrical stimulation drives microbial preference toward K+ and protein accumulation to tolerate salinity. These findings are in accordance with an enrichment of halophilic organisms in the BES. Halobacterium dominated in the BES by 56.8\% at a NaCl concentration of 40 g/liter, while its abundance was found as low as 17.5\% in the BC. These findings propose a new method of electrical stimulation to improve microbial salinity resistance.},
  author       = {Feng, Huajun and Zhang, Xueqin and Guo, Kun and Vaiopoulou, Eleni and Shen, Dongsheng and Long, Yuyang and Yin, Jun and Wang, Meizhen},
  issn         = {0099-2240},
  journal      = {APPLIED AND ENVIRONMENTAL MICROBIOLOGY},
  language     = {eng},
  number       = {11},
  pages        = {3737--3744},
  title        = {Electrical stimulation improves microbial salinity resistance and organofluorine removal in bioelectrochemical systems},
  url          = {http://dx.doi.org/10.1128/AEM.04066-14},
  volume       = {81},
  year         = {2015},
}

Altmetric
View in Altmetric
Web of Science
Times cited: