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ISSN:2325-6192 (print)
ISSN:2325-6206 (online)
Journal of Environmental Accounting and Management
António Mendes Lopes (editor), Jiazhong Zhang(editor)
António Mendes Lopes (editor)

University of Porto, Portugal

Email: aml@fe.up.pt

Jiazhong Zhang (editor)

School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi Province 710049, China

Fax: +86 29 82668723 Email: jzzhang@mail.xjtu.edu.cn

Removal of Dibutyl Phthalate and Its Effects on Bacterial Communities in Lab-scale Constructed Wetlands

Journal of Environmental Accounting and Management 7(1) (2019) 1--10 | DOI:10.5890/JEAM.2019.03.001

Xiaohui Wang$^{1}$, Jingdan Yang$^{1}$, Shuai Du$^{1}$, Yuan Yuan$^{2}$, Minghan Zhu$^{1}$, Yuan Li$^{1}$, Xiaobiao Zhu$^{1}$

$^{1}$ Beijing Engineering Research Center of Environmental Material for Water Purification, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China

$^{2}$ College of Forestry, Henan Agriculture University, Zhengzhou, 450002, China

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Abstract

The environmental release of phthalate acid esters (PAEs), and their potential health and environmental risks have attracted increasing concerns. The removal efficiencies of the most frequently identified PAE, dibutyl phthalate (DBP), and their effects on bacterial community structures were examined in two vertical flow constructed wetlands (VFCWs). In this study, the influent DBP concentration was about 600 μg/L and the removal rates reached above 61.1% during the study period. Catalase activity analysis showed that both treatment and control systems had significantly higher enzyme activities in the surface soil than subsurface substrate, and DBP significantly deteriorated the catalase activities (p < 0.05). Miseq sequencing data showed that DBP significantly increased the diversity of bacterial community (p < 0.05) and altered the overall bacterial community structure in wetland systems as revealed by Principal component analysis (PCA). The relative abundance of five genera, including Azohydromonas, Bdellovibrio, Desulfobulus, Roseomonas and Thiobacillus significantly decreased in the wetland at the present of DBP. However, four genera Propioniciclava, Geobacter, Paludibacter and Bacillus significantly increased under DBP. This study provides insights into our understanding the treatment performance of DBP in wetland systems, and their effects on the diversity and structure of bacterial communities under DBP in wetland systems.

Acknowledgments

This study was supported by the National Key Research and Development Program of China (2016YFC0401105), Beijing Municipal Science and Technology Project (Z171100002217029), and the Fundamental Research Funds for the Central Universities (JD1704).

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