Jump to main content
Jump to site search
Publishing
Advanced

Issue 55, 2016, Issue in Progress
Previous Article Next Article

Decolorization enhancement by optimizing azo dye loading rate in an anaerobic reactor

Min-Hua Cui,a  Dan Cui,b  Bin Liang,b  Thangavel Sangeetha,a  Ai-Jie Wang*ab  and  Hao-Yi Cheng*b 
Author affiliations

* Corresponding authors

a State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China
E-mail: waj0578@hit.edu.cn

b Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China
E-mail: hycheng@rcees.ac.cn

Abstract

An up-flow anaerobic sludge blanket (UASB) reactor was developed to investigate the effect of azo dye loading rate on the decolorization performance and microbial community. The results indicated that the decolorization efficiency decreased from 95.84 ± 2.60 to 62.98 ± 8.66% with the azo dye loading rate increasing from 100 to 800 g m−3 d−1. The inhibition of the high azo dye loading rate on the microbial activity was reversible. The decolorization efficiency rose with the azo dye loading rate decreasing and recovered to 92.15 ± 3.86% at an azo dye loading rate of 600 g m−3 d−1. The results of 16S rRNA gene sequencing based on the high-throughput Illumina MiSeq sequencing showed that the microbial diversity of the sludge in UASB was reduced compared to the inoculum. Proteobacteria (40.51%) and Firmicutes (33.17%) were enriched. Enterobacter and Enterococcus with relative abundances of 26.99% and 20.38% were the most enriched genera, which were also functional for azo dye reduction.

Graphical abstract: Decolorization enhancement by optimizing azo dye loading rate in an anaerobic reactor

Back to tab navigation
Download options Please wait...

Publication details

The article was received on 22 Feb 2016, accepted on 05 May 2016 and first published on 20 May 2016


Article type: Paper
DOI: 10.1039/C6RA04665G
Citation: RSC Adv., 2016,6, 49995-50001
  •   Request permissions

    Decolorization enhancement by optimizing azo dye loading rate in an anaerobic reactor

    M. Cui, D. Cui, B. Liang, T. Sangeetha, A. Wang and H. Cheng, RSC Adv., 2016, 6, 49995
    DOI: 10.1039/C6RA04665G

    If you are not the author of this article and you wish to reproduce material from it in a third party non-RSC publication you must formally request permission using RightsLink. Go to our Instructions for using RightsLink page for details.

    Authors contributing to RSC publications (journal articles, books or book chapters) do not need to formally request permission to reproduce material contained in this article provided that the correct acknowledgement is given with the reproduced material.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      Reproduced from Ref. XX with permission from the Centre National de la Recherche Scientifique (CNRS) and The Royal Society of Chemistry.
    • For reproduction of material from PCCP:
      Reproduced from Ref. XX with permission from the PCCP Owner Societies.
    • For reproduction of material from PPS:
      Reproduced from Ref. XX with permission from the European Society for Photobiology, the European Photochemistry Association, and The Royal Society of Chemistry.
    • For reproduction of material from all other RSC journals and books:
      Reproduced from Ref. XX with permission from The Royal Society of Chemistry.

    If the material has been adapted instead of reproduced from the original RSC publication "Reproduced from" can be substituted with "Adapted from".

    In all cases the Ref. XX is the XXth reference in the list of references.

    If you are the author of this article you do not need to formally request permission to reproduce figures, diagrams etc. contained in this article in third party publications or in a thesis or dissertation provided that the correct acknowledgement is given with the reproduced material.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Reproduced by permission of The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC
    • For reproduction of material from PCCP:
      [Original citation] - Reproduced by permission of the PCCP Owner Societies
    • For reproduction of material from PPS:
      [Original citation] - Reproduced by permission of The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC
    • For reproduction of material from all other RSC journals:
      [Original citation] - Reproduced by permission of The Royal Society of Chemistry

    If you are the author of this article you still need to obtain permission to reproduce the whole article in a third party publication with the exception of reproduction of the whole article in a thesis or dissertation.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements