Effect of copper on the removal of tetracycline from water by Myriophyllum aquaticum: Performance and mechanisms

被引：42

作者：

Guo, Xuan ^{[1
]}

Wang, Pengchao ^{[2
]}

Li, Yanmei ^{[1
]}

Zhong, Hua ^{[1
]}

Li, Peng ^{[1
]}

Zhang, Chengjun ^{[1
]}

Zhao, Tongke ^{[1
]}

机构：

[1] Beijing Acad Agr & Forestry Sci, Inst Plant Nutr & Resources, Beijing 100097, Peoples R China

[2] Qingdao Agr Univ, Sch Resources & Environm, Qingdao 266109, Shandong, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2019年 / 291卷

基金：

中国国家自然科学基金;

关键词：

Tetracycline; Copper; Myriophyllum aquaticum; Adsorption; Functional groups; Mechanism; FLOW CONSTRUCTED WETLANDS; SWINE WASTE-WATER; ANTIBIOTIC-RESISTANCE GENES; ADSORPTION-ISOTHERM; FUNCTIONAL-GROUPS; LEMNA-GIBBA; PHYTOREMEDIATION; CU(II); OXYTETRACYCLINE; TRANSFORMATION;

D O I：

10.1016/j.biortech.2019.121916

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Pollution with antibiotics and heavy metals necessitates efficient approaches for their removal. This study was conducted to investigate the role of Cu in the tetracycline (TC) removal potential of the floating plant Myriophyllum aquaticum and determine the underlying mechanisms. Myriophyllum aquaticum exhibited high TC removal potential from water (60% at 50 mg.L-1 TC and 10 g.L-1 M. aquaticum). Adsorption was the main mechanism of TC removal within 2 h, accounting for over 75% and 90% of total TC removal with and without Cu (II), respectively. Fourier-transform infrared spectroscopy and functional group identification showed that -OH, -COOH, and -NH2 were involved in TC adsorption through ion exchange. Cu(II) may act as a bridge during TC adsorption with M. aquaticum, but competitive adsorption of Cu(II) and TC on M. aquaticum occurs in case of excessive Cu(II). Myriophyllum aquaticum can serve as an important bioresource for effectively removing TC and Cu(II) from aquatic environments.

引用

页数：7

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