Effective column adsorption of triclosan from pure water and wastewater treatment plant effluent by using magnetic porous reduced graphene oxide

Ye Li; Shibo Liu; Chi Wang; Zhian Ying; Mingxin Huo; Wu Yang

doi:10.1016/j.jhazmat.2019.121942

Effective column adsorption of triclosan from pure water and wastewater treatment plant effluent by using magnetic porous reduced graphene oxide

J Hazard Mater. 2020 Mar 15:386:121942. doi: 10.1016/j.jhazmat.2019.121942. Epub 2019 Dec 19.

Authors

Ye Li¹, Shibo Liu², Chi Wang³, Zhian Ying³, Mingxin Huo¹, Wu Yang⁴

Affiliations

¹ School of Environment, Northeast Normal University, Changchun 130117, China; Science and Technology Innovation Center for Municipal Wastewater Treatment and Water Quality Protection, Jilin Province, Northeast Normal University, Changchun 130117, China; Engineering Lab for Water Pollution Control and Resources Recovery, Jilin Province, Northeast Normal University, Changchun 130117, China.
² Eco-environmental Monitoring and Scientific Research in Songliao Basin, Songliao Basin Eco-environmental Supervision and Administration Bureau, Ministry of Eco-environment, Changchun 130042, China.
³ School of Environment, Northeast Normal University, Changchun 130117, China.
⁴ School of Environment, Northeast Normal University, Changchun 130117, China; Science and Technology Innovation Center for Municipal Wastewater Treatment and Water Quality Protection, Jilin Province, Northeast Normal University, Changchun 130117, China; Shandong Key Laboratory of Water Pollution Control and Resource Reuse, Shandong University, Qingdao 266237, China. Electronic address: yangw104@nenu.edu.cn.

PMID: 31881495
DOI: 10.1016/j.jhazmat.2019.121942

Abstract

The ubiquitous presence of triclosan (TCS) in aquatic systems is of great concern. In the present work, magnetic porous reduced graphene oxide (MPrGO) was synthesized via in situ chemical co-precipitation of Fe³⁺and porous graphene oxide and, was used as an adsorbent for the removal of TCS with μg/L level from both pure water and wastewater treatment plant (WWTP) effluent by conducting with continuous flow fixed column. The BET surface area of MPrGO (1070 m²/g) was about tenfold higher than that of commercial powder activated carbon (PAC). Fast adsorption equilibrium can be reached within 20 s, the maximum adsorption capacity of TCS on MPrGO reached 1105.8 mg/g, and the sorbent can be regenerated for reusability about 5 cycles. The breakthrough time was 50 days for the bed depth of 2.3 mm at the inlet TCS concentration of 100 μg/L. MPrGO exhibited a much higher affinity toward TCS than PAC as the breakthrough time for MPrGO was 6.5 times longer than that for PAC. The Thomas and Yoon-Nelson models provide a better fitting curve than that by the Adams-Bohart model. High TCS adsorption capacity of 935.3 mg/g was calculated from WWTP effluent.

Keywords: High adsorption capacity; MPrGO; Modeling; TCS; WWTP effluent.

Publication types

Research Support, Non-U.S. Gov't