{"title":"超顺磁性聚苯乙烯-共丙烯酸水凝胶吸附Zn2+的动力学和热力学研究","authors":"N. Sharma, A. Tiwari","doi":"10.1080/15533174.2014.988797","DOIUrl":null,"url":null,"abstract":"The present research focuses on removal efficiency of superparamagnetic nano iron oxide loaded poly (styrene-co-acrylic acid) hydrogel for Zn2+ ions from aqueous solution by batch adsorption technique. The influence of pH, contact time, adsorbent dose, temperature, and metal ion concentration on the sensitivity of the removal process was inspected. Out of various kinetic models proposed, the pseudo second order seems to fit in the experimental data in the best way. Different thermodynamic parameters ΔG0, ΔH0, and ΔS0 have also been evaluated. The maximum percentage removal of Zn2+ ions (95%) was obtained at pH 7 in 120 min at room temperature (25°C).","PeriodicalId":22118,"journal":{"name":"Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2016-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Kinetic and Thermodynamic Studies of Zn2+ Adsorption Onto Superparamagnetic Poly (styrene-co-acrylic acid) Hydrogel\",\"authors\":\"N. Sharma, A. Tiwari\",\"doi\":\"10.1080/15533174.2014.988797\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The present research focuses on removal efficiency of superparamagnetic nano iron oxide loaded poly (styrene-co-acrylic acid) hydrogel for Zn2+ ions from aqueous solution by batch adsorption technique. The influence of pH, contact time, adsorbent dose, temperature, and metal ion concentration on the sensitivity of the removal process was inspected. Out of various kinetic models proposed, the pseudo second order seems to fit in the experimental data in the best way. Different thermodynamic parameters ΔG0, ΔH0, and ΔS0 have also been evaluated. The maximum percentage removal of Zn2+ ions (95%) was obtained at pH 7 in 120 min at room temperature (25°C).\",\"PeriodicalId\":22118,\"journal\":{\"name\":\"Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2016-04-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1080/15533174.2014.988797\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1080/15533174.2014.988797","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Kinetic and Thermodynamic Studies of Zn2+ Adsorption Onto Superparamagnetic Poly (styrene-co-acrylic acid) Hydrogel
The present research focuses on removal efficiency of superparamagnetic nano iron oxide loaded poly (styrene-co-acrylic acid) hydrogel for Zn2+ ions from aqueous solution by batch adsorption technique. The influence of pH, contact time, adsorbent dose, temperature, and metal ion concentration on the sensitivity of the removal process was inspected. Out of various kinetic models proposed, the pseudo second order seems to fit in the experimental data in the best way. Different thermodynamic parameters ΔG0, ΔH0, and ΔS0 have also been evaluated. The maximum percentage removal of Zn2+ ions (95%) was obtained at pH 7 in 120 min at room temperature (25°C).
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