Preparation and characterization of novel organic chelating resin and its application in recovery of Zn(II) from aqueous solutions

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• 作者：Qunxiong Zheng ; Zhuoli Li ; Xixi Miao ; Jionghui Li ; Yifeng Huang ; Haina Xia and Chunhua Xiong
• 刊名：Applied Organometallic Chemistry
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：31
• 期：1
• 全文大小：706K
• ISSN：1099-0739

文摘

An organic polymeric resin was synthesized by anchoring line-library/content/render" xmlns:mml="http://www.w3.org/1998/Math/MathML" id="aoc3546-eo-2000">p-aminobenzoic acid onto macroporous chloromethylated polystyrene beads, and was used for Zn(II) removal from aqueous solutions. The resin exhibited an initially rapid adsorption property for Zn(II) with equilibrium time of 10 h and the maximum adsorption capability approached 184.5 mg g⁻¹. Optimum pH was 4.5. The mechanism of adsorption was investigated using kinetic, isotherm and thermodynamic models. The adsorption kinetic data were described well by a pseudo second-order model with R² of 0.997. There was a negative ΔG (−17.98 kJ mol⁻¹) and positive ΔH (13.58 kJ mol⁻¹). HCl solution (1.0 mol l⁻¹) could achieve an elution rate of 100%. The experimental data were well fitted by the Thomas model with R² of 0.9826. Copyright