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Performance and diversity of polyvinyl alcohol-degrading bacteria under aerobic and anaerobic conditions

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Abstract

Objectives

To compare the degradation performance and biodiversity of a polyvinyl alcohol-degrading microbial community under aerobic and anaerobic conditions.

Results

An anaerobic–aerobic bioreactor was operated to degrade polyvinyl alcohol (PVA) in simulated wastewater. The degradation performance of the bioreactor during sludge cultivation and the microbial communities in each reactor were compared. Both anaerobic and aerobic bioreactors demonstrated high chemical oxygen demand removal efficiencies of 87.5 and 83.6 %, respectively. Results of 16S rDNA sequencing indicated that Proteobacteria dominated in both reactors and that the microbial community structures varied significantly under different operating conditions. Both reactors obviously differed in bacterial diversity from the phyla Planctomycetes, Chlamydiae, Bacteroidetes, and Chloroflexi. Betaproteobacteria and Alphaproteobacteria dominated, respectively, in the anaerobic and aerobic reactors.

Conclusions

The anaerobic–aerobic system is suitable for PVA wastewater treatment, and the microbial genetic analysis may serve as a reference for PVA biodegradation.

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Acknowledgments

This work was financially supported by the Science and Technology Plan of Henan (132300410080) and North China University of Water Resources and Electric Power Postgraduate Education Innovation Program (YK2015-13).

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Authors and Affiliations

  1. School of Environmental and Municipal Engineering, North China University of Water Resources and Electric Power, Zhengzhou, 450011, China

    Jianping Huang, Shisu Yang & Siqi Zhang

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  1. Jianping Huang
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  2. Shisu Yang
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  3. Siqi Zhang
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Correspondence to Jianping Huang.

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Huang, J., Yang, S. & Zhang, S. Performance and diversity of polyvinyl alcohol-degrading bacteria under aerobic and anaerobic conditions. Biotechnol Lett 38, 1875–1880 (2016). https://doi.org/10.1007/s10529-016-2174-4

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  • DOI: https://doi.org/10.1007/s10529-016-2174-4

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