异化Mn(IV)还原耦合降解卡马西平及双氯芬酸

翟俊; 胡炜; 王泉峰; 尹雪娇; 陈妮

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中国环境科学 ›› 2021, Vol. 41 ›› Issue (4) : 1704-1710.

水污染与控制

异化Mn(IV)还原耦合降解卡马西平及双氯芬酸

翟俊, 胡炜, 王泉峰, 尹雪娇, 陈妮

作者信息 +

Degradation of carbamazepine and diclofenac via dissimilatory Mn(IV) reduction

ZHAI Jun, HU Wei, WANG Quan-feng, YIN Xue-jiao, CHEN Ni

Author information +

文章历史 +

摘要

本文以卡马西平（CBZ）和双氯芬酸（DCF）2种代表性有机药物作为目标污染物，嘉陵江沉积物中提取的微生物作为菌源，利用锰矿物为填料的厌氧生物滤柱探究了异化锰还原过程对CBZ和DCF的处理效果.同时研究了外加有机碳源（乙酸钠）和MnO₂对异化锰还原去除CBZ和DCF过程的影响.结果表明，在无外加乙酸钠和MnO₂时，厌氧生物滤柱对10μg/L的CBZ和DCF能分别实现25.23%和32.44%的去除.其中异化锰还原贡献的去除率分别为2.81%和14.87%，而外加0.5g/L乙酸钠和25g MnO₂均能提高异化锰还原过程中对CBZ的处理效果（分别提高6.35%和4.63%），但对DCF的去除无显著影响.本试验可为难降解有机药物的降解提供新的思路.

Abstract

In this paper, the degradation of two target pharmaceuticals, carbamazepine (CBZ) and diclofenac (DCF), via dissimilatory Mn(IV) reduction was investigated in an anaerobic biological filter filling with manganese ores. The sediment from Jialing River was used as inoculum of the filter. Effects of extra organic carbon (sodium acetate) and adding extra MnO₂ on degradation were also studied. The results indicated that the anaerobic biofilter column could achieve 25.23% and 32.44% removal of CBZ and DCF from 10μg/L, respectively, with no extra sodium acetate or MnO₂ added. The contribution of dissimilatory Mn(IV) reduction to total CBZ removal was only 2.81% while that to DFC was 14.87%. Adding 0.5g/L of sodium acetate or 25g of MnO₂ could improve the removal efficiency of CBZ by 6.35% and 4.63%, respectively, through dissimilatory Mn(IV) reduction, while no significant effect on the DCF removal was observed. This study could provide a new idea for the degradation of resistant organic pharmaceuticals.

导出引用

翟俊, 胡炜, 王泉峰, 尹雪娇, 陈妮. 异化Mn(IV)还原耦合降解卡马西平及双氯芬酸[J]. 中国环境科学. 2021, 41(4): 1704-1710

ZHAI Jun, HU Wei, WANG Quan-feng, YIN Xue-jiao, CHEN Ni. Degradation of carbamazepine and diclofenac via dissimilatory Mn(IV) reduction[J]. China Environmental Science. 2021, 41(4): 1704-1710

中图分类号： X703.1

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