Adsorption of phenolic compounds from aqueous solutions by aminated hypercrosslinked polymers |
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| Authors: | JIANG Zhen-mao LI Ai-min CAI Jian-guo WANG Chun and ZHANG Quan-xin |
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| Institution: | 1. The State Key Laboratory of Pollution Control and Resource Reuse, Department of Environment Engineering, Nanjing University, Nanjing 210093, China
2. The State Key Laboratory of Pollution Control and Resource Reuse, Department of Environment Engineering, Nanjing University, Nanjing 210093, China;Jiangsu Engineering and Technology Research Center of Organic Pollution Control and Resource Reuse, Nanjing 210046, China |
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| Abstract: | Two novel polymers (NJ- 1 and NJ-2) were synthesized by chemically modified a hypercrosslinked polymer NJ-0 with dimethylamine and trimethylamine, respectively. The comparison of the adsorption properties of the three polymers toward phenol, resorcin and phloroglucin was made. The study focused on the static equilibrium adsorption behaviors and the adsorption thermodynamics.Freundlich equation was found to fit the adsorption results well. The effect of amino groups introduced onto the surface of the resin and the structure of phenolic compounds on the adsorption were also studied. The hydrogen-bonding interaction and electrostatic interaction could happen between the amino groups and the adsorbates. The adsorption impetus increased as quantity of hydroxyl groups increased, but the adsorption capacity decreased due to the drop of the matching degree of the aperture of resins and the diameter of adsorbate molecules. |
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| Keywords: | hypercrosslinked polymer phenolic compounds amino groups modified static adsorption polymers solutions aqueous phenolic compounds adsorption capacity drop matching degree aperture resins diameter quantity hydroxyl groups increased electrostatic interaction effect amino introduced surface structure equation |
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