期刊论文

Removal of tetracycline from wastewater by activated peroxymonosulfate using calcined kaolin

Duan, Y.

中文

环境工程学报

1673-9108

2020

14

9

2494-2505

10.12030/j.cjee.202003163

16C0303:湖南省教育厅一般项目 19C0376:湖南省教育厅一般项目 2019TP2079:湖南省村镇饮用水水质安全保障工程技术研究中心开放基金

本校为第一机构

煅烧高岭土(calcined kaolin,CK)是一种含量丰富且绿色环保的材料,因其具有催化活性高且活性位点较多的优点,故将其用以活化过一硫酸盐(peroxymonosulfate,PMS)以去除四环素(tetracycline,TC)。结果表明,CK活化PMS去除TC的过程包括吸附和催化降解。溶液初始pH=6、0.5mmol·L~(-1)投加量的PMS和0.2g·L~(-1)投加量的CK为CK活化PMS去除TC的最佳条件。Cl~–、NO_3~-、HCO_3~-的浓度在0~10mmol·L~(-1)时对CK活化PMS去除TC体系基本没有影响,H_2PO_4~-而对其体系有较大的抑制作用。自由基淬灭实验结果表明,HO·是CK活化PMS去除TC体系中的主要活性基团。通过液相-质谱联用仪检测出12种产物,阐述了4条可...

Calcined kaolin (CK) is an abundant and green material and was used to activate peroxymonosulfate (PMS) for tetracycline (TC) removal due to its high catalytic activity and many active sites. The results showed that the removal process of TC by activated PMS using CK included adsorption and catalytic degradation. The optimal conditions for TC removal were pH=6, the dosages of 0.5 mmol·L−1 PMS and 0.2 g·L−1 CK. Cl−, NO-3 and HCO-3 with the concentration range of 0~10 mmol·L−1 had slight effect on the TC removal system, while H2PO-4 had a ...