Low temperature acclimation with electrical stimulation enhance the biocathode functioning stability for antibiotics detoxification

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Bin Liang
  • Deyong Kong
  • Jincai Ma
  • Chongqing Wen
  • Tong Yuan
  • Jizhong Zhou
  • Aijie Wang

Detail(s)

Original languageEnglish
Pages (from-to)157-168
Journal / PublicationWater Research
Volume100
Publication statusPublished - 1 Sept 2016
Externally publishedYes

Abstract

Improvement of the stability of functional microbial communities in wastewater treatment system is critical to accelerate pollutants detoxification in cold regions. Although biocathode communities could accelerate environmental pollutants degradation, how to acclimate the cold stress and to improve the catalytic stability of functional microbial communities are remain poorly understood. Here we investigated the structural and functional responses of antibiotic chloramphenicol (CAP) reducing biocathode communities to constant low temperature 10 °C (10-biocathode) and temperature elevation from 10 °C to 25 °C (S25-biocathode). Our results indicated that the low temperature acclimation with electrical stimulation obviously enhanced the CAP nitro group reduction efficiency when comparing the aromatic amine product AMCl 2 formation efficiency with the 10-biocathode and S25-biocathode under the opened and closed circuit conditions. The 10-biocathode generated comparative AMCl maximum as the S25-biocathode but showed significant lower dehalogenation rate of AMCl 2 to AMCl. The continuous low temperature and temperature elevation both enriched core functional community in the 10-biocathode and S25-biocathode, respectively. The 10-biocathode functioning stability maintained mainly through selectively enriching cold-adapted functional species, coexisting metabolically similar nitroaromatics reducers and maintaining the relative abundance of key electrons transfer genes. This study provides new insights into biocathode functioning stability for accelerating environmental pollutants degradation in cold wastewater system.

Research Area(s)

  • Antibiotics degradation, Biocathode communities, Electrical stimulation, Functioning stability, Low temperature

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to lbscholars@cityu.edu.hk.

Citation Format(s)

Low temperature acclimation with electrical stimulation enhance the biocathode functioning stability for antibiotics detoxification. / Liang, Bin; Kong, Deyong; Ma, Jincai et al.
In: Water Research, Vol. 100, 01.09.2016, p. 157-168.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review