Modified Chitosan Flakes with Glutaraldehyde and Citric Acid as a Potential Biosorbent for Adsorption of Cd(II) from Aqueous Solution

机译：用戊二醛和柠檬酸改性壳聚糖薄片作为潜在的生物吸附剂，用于从水溶液中吸附CD（II）

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This study investigated the adsorption of Cd(II) ions in aqueous solutions onto the chitosan flakes cross-linked with glutaraldehyde (Gch), and citric acid (CGch). The optimal conditions for these adsorptions process were found to be at pH 6 with contact time of 400 min for Gch and 350 min for CGch. The Cd(II) adsorption process on Gch and CGch well fitted to the pseudosecond-order model. The data obtained from the equilibrium experiment were analyzed using Langmuir, Freundlich and Dubinin-Radushkevich (D-R) models. The results showed that the adsorption process was more effectively described by Langmuir model for Gch and Freundlich model for CGch. Calculated thermodynamic parameters, ΔG, ΔH, and ΔS of the processes showed that Cd(II) adsorption on Gch and CGch was spontaneous and endothermic process.

机译：该研究研究了与戊二醛（GCH）和柠檬酸（CGCH）交联壳聚糖薄膜水溶液中的CD（II）离子的吸附。发现这些吸附过程的最佳条件是在pH6的pH6中，对于CGCH的350分钟，接触时间为400分钟。 GCH和CGCH上的CD（II）吸附过程适合于伪级阶模型。使用Langmuir，Freundlich和Dubinin-Radushkevich（D-R）模型分析了从平衡实验中获得的数据。结果表明，CGCH的GCH和Freundlich模型的Langmuir模型更有效地描述了吸附过程。计算的热力学参数，ΔG，ΔH和δS的过程显示，CD（II）对GCH和CGCH的吸附是自发的和吸热过程。

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《International Conference on Green Technology and Sustainable Development》|2016年|282p|共7页
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Ho Thi Yen Ly; Suc Van Nguyen;
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中图分类 X38-53;
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Adsorption; Ions; Mathematical model; Data models; Metals; Analytical models;

机译：吸附;离子;数学模型;数据模型;金属;分析模型;

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1. Lead (II) removal from aqueous solution by chitosan flake modified with citric acid via crosslinking with glutaraldehyde [J] . Suc N.V., Ly H.T.Y. Journal of Chemical Technology & Biotechnology . 2013,第9期

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4. Modified Chitosan Flakes with Glutaraldehyde and Citric Acid as a Potential Biosorbent for Adsorption of Cd(II) from Aqueous Solution [C] . Ho Thi Yen Ly, Suc Van Nguyen 2016 3rd International Conference on Green Technology and Sustainable Development . 2016

机译：戊二醛和柠檬酸改性的壳聚糖薄片作为潜在的生物吸附剂，可从水溶液中吸附Cd（II）
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Modified Chitosan Flakes with Glutaraldehyde and Citric Acid as a Potential Biosorbent for Adsorption of Cd(II) from Aqueous Solution

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