Heavy metal (Cd2+, Ni2+, Pb2+ and Ni2+) adsorption in aqueous solutions by oxidized starches

被引：26

作者：

Soto, Diana ^{[1
]}

Urdaneta, Jose ^{[1
]}

Pernia, Kelly ^{[1
]}

Leon, Orietta ^{[1
]}

Munoz-Bonilla, Alexandra ^{[2
]}

Fernandez-Garcia, Marta ^{[3
]}

机构：

[1] Univ Zulia, Fac Ingn, Escuela Ingn Quim, Lab Polimeros & Reacc,Sect Grano de Oro, Maracaibo 4011, Venezuela

[2] Univ Autonoma Madrid, Fac Ciencias, Dept Quim Fis Aplicada, E-28049 Madrid, Spain

[3] CSIC, ICTP, Dept Quim & Propiedades Mat Polimer, E-28006 Madrid, Spain

来源：

POLYMERS FOR ADVANCED TECHNOLOGIES | 2015年 / 26卷 / 02期

关键词：

starch; redox system; adsorption; heavy metals; remotion; ITACONIC ACID; IONS; SORPTION; CHITOSAN; HYDROGELS; CORN; EQUILIBRIUM; DERIVATIVES; OXIDATION; COMMON;

D O I：

10.1002/pat.3439

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Superabsorbent materials based on natural products have been synthesized by free radical oxidation of corn starch using a redox system consisting of potassium permanganate and sodium bisulfite. The resulting oxidized starches were characterized by analyzing the variation of carbonyl and carboxyl contents. The swelling ability of these samples has been determined by gravimetric method in water and in saline solutions. The effect of oxidant concentration and bleaching procedure on the water absorption capacity has been studied. The ability to remove heavy metals in water solution has been tested against Cd2+, Ni2+, Pb2+ and Zn2+ ions, showing higher percentage of remotion for the unbleached oxidized starches, in particular against nickel ions. Copyright (c) 2014 John Wiley & Sons, Ltd.

引用

页码：147 / 152

页数：6

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