Adsorption behaviors of the aminated chitosan adsorbent |
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Authors: | Zhao Yan Su Haijia Tan Tianwei |
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Affiliation: | (1) Beijing University of Chemical Technology, Beijing, 100029, China;(2) College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, China |
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Abstract: | Using inverse suspension technology, a novel aminated chitosan adsorbent with higher adsorption ability for metal cations and metal anions was prepared. Through cross-linking amination reaction, the content of amidocyanogen of aminated chitosan adsorbent was enhanced four times than that of chitosan cross-linked adsorbent. As can be seen from the results, the adsorption ability of the novel aminated chitosan adsorbent for (Nicit)− and Cr(VI) was enhanced remarkably. When the initial concentration of metallic ion was 1,000 mg/L, the adsorption capacity of the novel aminated chitosan adsorbent for nickel citrate and Cr(VI) was up to 30.2 mg/g and 28.7 mg/g, respectively. And the adsorption capacity of the novel aminated chitosan adsorbent for Ni2+ was still higher. So the new aminated chitosan adsorbent offers not only a higher uptake for metal cations but also a better adsorption capacity for metal anions. |
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Keywords: | Heavy Metallic Anion Adsorption Chitosan Cross-linking Aminated |
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