非自由基介导的氧化铜活化单过硫酸盐降解四环素

doi:10.11894/iwt.2020-0997

摘要/Abstract

摘要：

采用纳米CuO活化过一硫酸盐（PMS）体系降解水溶液中的四环素（TTC）。实验表明，CuO/PMS体系对TTC的降解效果明显优于单独的PMS体系；CuO/PMS体系能够有效缓解水体中共存离子对TTC降解的抑制作用；中性pH条件下可取得最佳的降解效果。CuO与PMS是通过静电作用（外球相互作用）结合，然后进行电子传递，从而快速去除TTC。

关键词: 非自由基, 氧化铜, 单过硫酸盐, 四环素

Abstract:

Nano-CuO was used to activate peroxymonosulfate(PMS) to degrade tetracycline(TTC) in aqueous solution. Experiments showed that the degradation efficiency of CuO/PMS system on TTC was obviously better than that of PMS alone system. CuO/PMS system could effectively alleviate the inhibitory effect of coexisting ions in water on TTC degradation. The best degradation effect could be achieved under neutral pH. CuO and PMS is combined through electrostatic interaction(external ball interaction), and then conduct electron transfer to quickly remove TTC.

Key words: nonradical, copper oxide, peroxymonosulfate, tetracycline

中图分类号:

X703

邹丛阳,周锐,赵彤. 非自由基介导的氧化铜活化单过硫酸盐降解四环素[J]. 工业水处理, 2021, 41(2): 102-107.

Congyang Zou,Rui Zhou,Tong Zhao. Nonradical-mediated copper oxide activation of peroxymonosulfate to degrade tetracycline[J]. Industrial Water Treatment, 2021, 41(2): 102-107.

https://www.iwt.cn/CN/Y2021/V41/I2/102

图/表 8

图1 CuO用量和PMS浓度对CuO/PMS体系降解TTC的影响

图2 溶液pH对CuO/PMS体系降解TTC的影响

图3 共存离子对CuO/PMS体系降解TTC的影响

图4 自由基猝灭剂对CuO/PMS体系降解TTC的影响

图5 离子强度（以NaClO₄浓度表示）对CuO/PMS体系降解TTC的影响

图6 不同体系中PMS的分解

图7 反应前后CuO的SEM和XRD表征结果

图8 CuO的循环使用效果

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