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Microbial community response during the treatment of pharmaceutically active compounds (PhACs) in constructed wetland mesocosms.

Abstract：

:The presence of pharmaceutically active compounds (PhACs) in wastewater treatment plant effluent poses a potential risk to aquatic ecosystems. Constructed wetlands have recently been used to control PhACs. However, the microbial communities that are involved in these processes have not been comprehensively investigated. This study aimed to evaluate the removal of PhACs and microbial response in constructed wetlands during the treatment of PhACs. The effects of PhACs on bacterial communities in constructed wetland mesocosms were analyzed by Illumina MiSeq sequencing technology. Results indicated that removal efficiencies of PhACs were enhanced over time, and constructed wetlands offer higher removal efficiencies for the PhACs studied compared to conventional wastewater treatment plants. Plants improved microbial richness and diversity while both indices were negatively correlated with PhAC concentrations ranging from 30 to 500 μg/L in constructed wetland mesocosms. The microbial communities of the constructed wetland mesocosms were dominated by Proteobacteria, Acidobacteria, and Bacteroidetes under PhAC exposure, while Desulfobulbus and Treponema were the dominant genera. In particular, Proteobacteria were correlated with PhAC concentrations. Overall, this study provides valuable microbial community ecology data to understand how microbial populations respond to PhAC stress in constructed wetlands.

journal_name

Chemosphere

journal_title

Chemosphere

authors

Yan Q,Min J,Yu Y,Zhu Z,Feng G

doi

10.1016/j.chemosphere.2017.08.064

subject

Has Abstract

pub_date

2017-11-01 00:00:00

pages

823-831

eissn

0045-6535

issn

1879-1298

pii

S0045-6535(17)31287-0

journal_volume

186

pub_type

杂志文章

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