Effective removal of bisphenols from aqueous solution with magnetic hierarchical rattle-like Co/Ni-based LDH

Guoliang Li; Xiaobing Zhang; Jianqiang Sun; Anping Zhang; Chunyang Liao

doi:10.1016/j.jhazmat.2019.120985

Effective removal of bisphenols from aqueous solution with magnetic hierarchical rattle-like Co/Ni-based LDH

J Hazard Mater. 2020 Jan 5:381:120985. doi: 10.1016/j.jhazmat.2019.120985. Epub 2019 Aug 10.

Authors

Guoliang Li¹, Xiaobing Zhang², Jianqiang Sun³, Anping Zhang³, Chunyang Liao⁴

Affiliations

¹ State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
² State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310014, China.
³ Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310014, China.
⁴ State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Institute of Environment and Health, Jianghan University, Wuhan, Hubei 430056, China. Electronic address: cyliao@rcees.ac.cn.

PMID: 31437803
DOI: 10.1016/j.jhazmat.2019.120985

Abstract

A novel unique adsorbent (Fe₃O₄@Co/Ni-LDH) has been successfully synthesized and applied for removal of bisphenols (BPs) from aqueous solution. The prepared adsorbent was characterized to appear in a hierarchical rattle-like structure, and possesses high specific surface area, abundant pore system, and magnetic properties. Adsorption kinetics fitted well with the pseudo-second-order model. Adsorption isotherms abide by the Langmuir model, and the maximum adsorption capacity for bisphenol A (BPA), F (BPF), AF (BPAF) and S (BPS) on Fe₃O₄@Co/Ni-LDH at pH of 7.0 were 238.96, 177.09, 320.56 and 345.84 mg/g, respectively. Moreover, it was found that the high pH and NaCl concentration were not conducive to the removal of BPs. The humic acid and real waters had no significant effects on the removal of BPs on Fe₃O₄@Co/Ni-LDH. Furthermore, the FT-IR spectra indicated that the removal of four BPs were primarily Hydrogen bond interaction between BPs and Fe₃O₄@Co/Ni-LDH. The Fe₃O₄@Co/Ni-LDH was regenerated effectively by methanol and can be repeatedly used. This novel Fe₃O₄@Co/Ni-LDH can be applied as a promising adsorbent for removal of BPs from aqueous matrices.

Keywords: Bisphenols; Endocrine disrupting compounds (EDCs); LDH; Metal organic frameworks (MOFs); Removal.

Publication types

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