壳聚糖复合水凝胶对水溶液中铜离子（Ⅱ）的高效吸附

doi:10.3969/j.issn.0253-2417.2014.01.002

Abstract

Abstract: A series of adsorbents synthesized from chitosan-grafted-methacrylic acid/acrylamide/sodium allyl sulfonate (CTS-g-MAA/AM/SAS) composite hydrogels with various amounts of SAS were prepared. The effects of particle size, dosage of composite hydrogel, the pH value and initial concentration of Cu²⁺ in solution on the adsorption capacity were investigated. The results showed that a adsorption capacity of the CTS-g-MAA/AM/SAS composite hydrogels was increased with the increasing of pH value. A maximum absorption amount of Cu²⁺ of 823 mg/g was observed using 0.1 g/25 mL absorbent with particle size of 0.074-0.2 mm under pH value of 6.0. Freundlich, Langmuir plots and their isotherm coefficients for the adsorption of Cu²⁺ indicated a multilayer adsorption behavior using this adsorbent.

Key words: chitosan, modified, hydrogel, bioadsorbent, copper (Ⅱ) ions

CLC Number:

TQ35

GUO Dou-dou, PANG Hao, LIU Hai-lu, XU Li-li, ZHENG Jing-xin, LIAO Bing. Preparation of Chitosan Composite Hydrogels and Its Effective Adsorption of Copper (Ⅱ) Ions from Aqueous Solutions[J]. Chemistry and Industry of Forest Products, 2014, 34(1): 8-12.

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Preparation of Chitosan Composite Hydrogels and Its Effective Adsorption of Copper (Ⅱ) Ions from Aqueous Solutions

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