Removal of heavy metal ions from aqueous system by ion-exchange and biosorption methods

被引：476
|
作者：
Bashir, Arshid [1 ]
Malik, Lateef Ahmad [1 ]
Ahad, Sozia [1 ]
Manzoor, Taniya [1 ]
Bhat, Mudasir Ahmad [2 ]
Dar, G. N. [3 ]
Pandith, Altaf Hussain [1 ]
机构：
[1] Univ Kashmir, Dept Chem, Srinagar 190006, Kashmir, India
[2] Natl Inst Technol, Dept Chem, Srinagar 190006, Kashmir, India
[3] Univ Kashmir, Dept Phys, Srinagar 190006, Kashmir, India
来源：
ENVIRONMENTAL CHEMISTRY LETTERS | 2019年 / 17卷 / 02期
关键词：
Heavy metal remediation; Ion exchange; Biosorption; Layered materials; HIGHLY EFFICIENT ADSORPTION; CROSS-LINKED CHITOSAN; WASTE-WATER; HEXAVALENT CHROMIUM; ACTIVATED CARBON; PHOTOCATALYTIC REDUCTION; ARSENIC REMOVAL; LEAD(II) IONS; LOW-COST; ADSORBENTS;
D O I：
10.1007/s10311-018-00828-y
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Pollution due to heavy metals is currently a serious problems affecting water bodies. The removal of heavy metals is of great concern due to their toxicity at trace levels and accumulation in the biosystem. Here we reviewthe technical feasibility of biosorption and ion exchange methods for the removal of various heavy metals from the aqueous media. Chemical pretreatment of low-cost biosorbents arepresented. Chemically modified biosorbents exhibit far better adsorption capacities than unmodified ones. We also highlighted the effect of pH on the biosorption for maximal uptake of heavy metals, because pH modifiesthe surface charge of thebiosorbent as well as the speciation of heavy metals.
引用
收藏
页码：729 / 754
页数：26
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