Highly efficient removal of dyes from wastewater over a wide range of pH value by a self-adaption adsorbent

被引：18

作者：

Hu, Quan ^{[1
]}

Bin, Liying ^{[1
]}

Li, Ping ^{[1
]}

Fu, Fenglian ^{[1
]}

Guan, Guoqing ^{[2
]}

Hao, Xiaogang ^{[3
]}

Tang, Bing ^{[1
]}

机构：

[1] Guangdong Univ Technol, Sch Environm Sci & Engn, Guangzhou Key Lab Environm Catalysis & Pollut Con, Guangdong Key Lab Environm Catalysis & Hlth Risk, Guangzhou 510006, Peoples R China

[2] Hirosaki Univ, Inst Reg Innovat IRI, Energy Convers Engn Grp, 2-1-3 Matsubara, Aomori 0300813, Japan

[3] Taiyuan Univ Technol, Dept Chem Engn, Taiyuan 030024, Peoples R China

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2021年 / 331卷

关键词：

Printing and dyeing wastewater; Chitosan; Magnetic adsorbent; Self-adaption; Adsorption; Anionic dyes; METHYLENE-BLUE; AQUEOUS-SOLUTIONS; ADSORPTION; CHITOSAN; OXIDE; THERMODYNAMICS; COMPOSITE; KINETICS; CARBON;

D O I：

10.1016/j.molliq.2021.115719

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The study prepared a self-adaption adsorbent that was capable of removing anionic dye over a wide range of pH value and revealed its essential adsorption mechanism to the conventional dyes as target pollutants. Through a cross-linking/embedding method, MgO particles were successfully combined with magnetic substances and Chitosan, which created a novel magnetic adsorbent (named as MgO-MCS) that could be used to efficiently remove anionic dyes by self-adjusting its surface charge. A series of characterization techniques and adsorption experiments were conducted to reveal the properties and the adsorption mechanisms, whose results showed that MgO-MCS had a better adsorption effect, and wider application range than that of magnetic Chitosan (MCS). The enhancement of adsorption was attributed to the formed more micropores and mesopores on the surface of MgO-MCS, and the essential mechanism was mainly caused by the combined effects of van der Waals force, electrostatic interaction and hydrogen bond. (C) 2021 Elsevier B.V. All rights reserved.

引用

页数：9

共 48 条

[1] Shape controlled synthesis of high surface area MgO microstructures for highly efficient congo red dye removal and peroxide sensor [J].