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Published on: June 28, 2019
Superior amine-rich gel adsorbent from peach gum polysaccharide for highly efficient removal of anionic dyes
Yiheng Song1, Jisuan Tan1, Guan Wang2
1Key Laboratory of New Processing Technology for Nonferrous Metal and Materials (Ministry of Education) and College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, PR China.
Abstract:
Herein, we demonstrated the potential of peach gum polysaccharide-based amine-rich gel (ARG) as an efficient adsorbent for removal of anionic dyes from water. The adsorption performance of ARG was systematically studied by choosing methyl orange (MO) and amaranth (ART) as representative anionic dyes. The effects of various parameters such as pH, ionic strength, temperature, initial dye concentration and contact time on the adsorption were investigated. The ARG exhibited superior adsorption selectivity and stable adsorption behaviors against variation of pH and ionic strength for anionic dyes. Adsorption process reached equilibrium within 10 min and showed good correlation with pseudo-second-order kinetic model and Langmuir isotherm. The adsorption capacity of ARG for MO and ART can reach 1949.5 and 1082.2 mg g-1, respectively. Based on its sustainable characteristic, low cost and excellent adsorption property, the ARG holds great promise for utilizing as an adsorbent for practical water treatment applications.
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