Removal of cadmium(II) cations from an aqueous solution with aminothiourea chitosan strengthened magnetic biochar |
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| Authors: | Hui Huang Shuncheng Jiang Di Guo Manlin Li Zengqiang Zhang Amajd Ali Jim J. Wang |
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| Affiliation: | 1. College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, People's Republic of China;2. Shaanxi Key Laboratory of Natural Products and Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi, People's Republic of China;3. Agricultural Center, School of Plant, Environmental, and Soil Sciences, Louisiana State University, Baton Rouge, Louisiana |
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| Abstract: | An aminothiourea chitosan modified magnetic biochar composite (TMBC) was prepared for the efficient removal of Cd(II) from wastewater. The synthesized materials were characterized, and the detailed adsorption mechanisms and thermodynamics were studied. The adsorption experiments revealed that TMBC had a higher affinity for Cd(II) than the magnetic biochar composite, raw biochar, and other carbon‐based adsorbents did. The Cd(II) adsorption process fit the pseudo‐second‐order kinetic model, and the maximum adsorption capacities on the basis of the Langmuir model were 93.72, 121.9, and 137.3 mg/g at 298, 308, and 318 K, respectively. The practical efficacy of the adsorbent was also tested with a real mine water. The metal‐ion‐loaded TMBC could be conveniently collected by a magnet and could be easily regenerated with adsorption efficiencies up to 84% after five adsorption–desorption cycles. The as‐prepared TMBC might be a promising adsorbent for the treatment of heavy‐metal‐ion‐contaminated water or highly mineralized mine water. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135, 46239. |
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| Keywords: | adsorption cellulose and other wood products magnetism and magnetic properties polysaccharides separation techniques |
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