文献类型：期刊文献

英文题名：Functionalized chitosan biosorbents with ultra-high performance, mechanical strength and tunable selectivity for heavy metals in wastewater treatment

作者：Wang, Bingjie[1,2];Zhu, Yong[1];Bai, Zhishan[1];Luque, Rafael[2];Xuan, Jin[3]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China;[2]Univ Cordoba, Dept Quim Organ, Campus Rabanales,Edificio Marie Curie C-3, E-14014 Cordoba, Spain;[3]Heriot Watt Univ, Sch Engn & Phys Sci, Edinburgh EH14 4AS, Midlothian, Scotland

年份：2017

卷号：325

起止页码：350

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20172203698494);WOS:【SCI-EXPANDED(收录号:WOS:000403733800035)】；

基金：This work was supported by The National Basic Research Program of China (973 Program, 2014CB748500), National Natural Science Foundation of China (51406057, 51578239, 51322805) and Research Fund for the Doctoral Program of Higher Education of China (20130074120019).

语种：英文

外文关键词：Wastewater treatment; Heavy metal adsorption; Microfluidics; Chitosan biosorbents; Polyethylenimine functionalization

摘要：Water pollution is the most challenging issue facing mankind nowadays as a result of ever-increasing population and steadily improving life standards. More and more wastewater without effective treatments is arbitrarily discharged into the aquatic environment, which causes irreversible damage and incalculable loss. Especially, the industrial wastewater containing heavy metal ions, such as copper (Cu), cobalt (Co), and manganese (Mn), are toxic to human and living organisms even at low concentrations. A highly efficient and selective removal method has been long sought for heavy metal ions wastewater treatment. In this study, a highly monodispersed polyethylenimine-chitosan (PEI-CS) biosorbent, synthesized by an integrated process with facile microfluidic emulsion, chemical crosslinking, solvent extraction and chemical modification, was used as an efficient adsorbent to remove heavy metal ion from contaminated water. The as-prepared biosorbents demonstrated ultra-high adsorption capacity of 146 mg g(-1) towards Cu ions, almost triple the performance reported in literature. Besides, PEI-CS biosorbents were also endowed with good mechanical strength, excellent adsorption selectivity towards targeted ion in the presence of other metal ions with different valence states, and high reusability. Therefore, the newly developed PEI-CS biosorbents is a highly promising candidate for wastewater treatment with heavy metal ions. (C) 2017 Elsevier B.V. All rights reserved.