In situ kinetics of human pharmaceutical conjugates and the impact of transformation, deconjugation, and sorption on persistence in wastewater batch bioreactors

被引：13

作者：

Brown, Alistair K. ^{[1
]}

Ackerman, Joe ^{[2
]}

Cicek, Nazim ^{[2
]}

Wong, Charles S. ^{[1
,3
,4
]}

机构：

[1] Univ Manitoba, Dept Chem, Winnipeg, MB R3T 2N2, Canada

[2] Univ Manitoba, Dept Biosyst Engn, Winnipeg, MB R3T 2N2, Canada

[3] Southern Calif Coastal Water Res Project Author, Costa Mesa, CA 92626 USA

[4] Jinan Univ, Sch Environm, Guangzhou 510632, Peoples R China

来源：

ENVIRONMENTAL POLLUTION | 2020年 / 265卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Kinetics; Pharmaceutical; Metabolite; Wastewater; Transformation; SOLID-PHASE EXTRACTION; TREATMENT PLANTS; ACTIVATED-SLUDGE; HUMAN METABOLITES; ANTIBIOTIC SULFAMETHOXAZOLE; COMMUNITY STRUCTURE; BETA-BLOCKERS; BILE-ACIDS; FATE; PRODUCTS;

D O I：

10.1016/j.envpol.2020.114852

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The fate of selected common pharmaceuticals and four of their major conjugates in wastewater batch bioreactors was evaluated to determine how treatment plant parameters such as addition of air, and the presence of waste activated sludge (WAS) could influence the removal of parent compounds and conjugates. Under a realistic hydraulic residence time (HRT) for each treatment sub-process of approximately 2 h, acetaminophen and its sulfate metabolite were both rapidly degraded (>99%). Propranolol was sulfated and concurrently removed. Deconjugation of N-acetylsulfamethoxazole and sulfamethoxazole-glucuronide contributed to increases of the parent sulfamethoxazole. Thyroxine was resistant to degradation, while thyroxine-glucuronide was rapidly deconjugated (>90% in <2 h). In the absence of WAS, sorption to suspended solids was another major removal mechanism for acetaminophen, propranolol, sulfamethoxazole, and thyroxine. However, with WAS, concentrations associated with suspended solids decreased for all analytes within 24 h. These results indicate that both conjugation and back-transformation are compound-specific and dependent on parameters such as HRT, addition of microbial content, and suspended solids levels. Therefore, conjugation-deconjugation processes may strongly influence the speciation of pharmaceuticals and their fate in wastewater treatment plant effluents. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页数：12

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