Biotransformation of pharmaceuticals under nitrification, nitratation and heterotrophic conditions

被引：122

作者：

Fernandez-Fontaina, E. ^{[1
]}

Gomes, I. B. ^{[1
]}

Aga, D. S. ^{[2
]}

Omil, F. ^{[1
]}

Lema, J. M. ^{[1
]}

Carballa, M. ^{[1
]}

机构：

[1] Univ Santiago de Compostela, Inst Technol, Dept Chem Engn, Santiago De Compostela 15782, Spain

[2] SUNY Buffalo, Dept Chem, Buffalo, NY 14260 USA

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 2016年 / 541卷

关键词：

Biodegradation; Micropollutants; Nitrifiers; Pharmaceuticals; Sorption; Wastewater treatment; WASTE-WATER TREATMENT; PERSONAL CARE PRODUCTS; ACTIVATED-SLUDGE; TREATMENT PLANTS; NITROSOMONAS-EUROPAEA; AMMONIA MONOOXYGENASE; AROMATIC-COMPOUNDS; MUSK FRAGRANCES; RETENTION TIME; REMOVAL;

D O I：

10.1016/j.scitotenv.2015.10.010

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The effect of nitrification, nitratation and heterotrophic conditions on the biotransformation of several pharmaceuticals in a highly enriched nitrifying activated sludge was evaluated in this study by selective activation of ammonia oxidizing bacteria (AOB), nitrite oxidizing bacteria (NOB) and heterotrophic bacteria. Nitrifiers displayed a noticeable capacity to process ibuprofen due to hydroxylation by ammonia monooxygenase (AMO) to produce 2-hydroxy-ibuprofen. Naproxen was also biotransformed under nitrifying conditions. On the other hand, heterotrophic bacteria present in the nitrifying activated sludge (NAS) biotransformed sulfamethoxazole. In contrast, both nitrifying and heterotrophic activities were ineffective against diclofenac, diazepam, carbamazepine and trimethoprim. Similar biotransformation rates of erythromycin, roxithromycin and fluoxetine were observed under all conditions tested. Overall, results from this study give more evidence on the role of the different microbial communities present in activated sludge reactors on the biological removal of pharmaceuticals. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：1439 / 1447

页数：9

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