{"title":"一种农业固体废弃物——可可壳对活性蓝2染料的吸附","authors":"C. Theivarasu, S. Mylsamy","doi":"10.1109/GTEC.2011.6167688","DOIUrl":null,"url":null,"abstract":"Activated carbon prepared from agro waste cocoa (Theobroma cacao) shell has been utilized as the adsorbent for the removal of Reactive blue 2 dye from aqueous solution. Adsorption studies were carried out at different initial concentration and contact time, pH of solution and temperature. Adsorption data were modeled using Langmuir, Freundlich, Tempkin and Dubinin-Raduskevich isotherms. Based on correlation coefficient (r2) values, equilibrium data found fitted well to the Langmuir isotherm. Adsorption kinetics was verified by pseudo-first order, pseudo-second order and Intraparticle diffusion models. The kinetic adsorption data fitted the pseudo-second order kinetic model well and also followed the intra-particle diffusion model. Thermodynamic parameters such as ΔH°, ΔS°, and ΔG° were evaluated. The positive enthalpy shows that the adsorption process was endothermic in nature.","PeriodicalId":13706,"journal":{"name":"International Conference on Green technology and environmental Conservation (GTEC-2011)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Adsorption of reactive blue 2 dye from aqueous solution by cocoa (Theobroma) cacao shell: An agro solid waste\",\"authors\":\"C. Theivarasu, S. Mylsamy\",\"doi\":\"10.1109/GTEC.2011.6167688\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Activated carbon prepared from agro waste cocoa (Theobroma cacao) shell has been utilized as the adsorbent for the removal of Reactive blue 2 dye from aqueous solution. Adsorption studies were carried out at different initial concentration and contact time, pH of solution and temperature. Adsorption data were modeled using Langmuir, Freundlich, Tempkin and Dubinin-Raduskevich isotherms. Based on correlation coefficient (r2) values, equilibrium data found fitted well to the Langmuir isotherm. Adsorption kinetics was verified by pseudo-first order, pseudo-second order and Intraparticle diffusion models. The kinetic adsorption data fitted the pseudo-second order kinetic model well and also followed the intra-particle diffusion model. Thermodynamic parameters such as ΔH°, ΔS°, and ΔG° were evaluated. The positive enthalpy shows that the adsorption process was endothermic in nature.\",\"PeriodicalId\":13706,\"journal\":{\"name\":\"International Conference on Green technology and environmental Conservation (GTEC-2011)\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2011-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Conference on Green technology and environmental Conservation (GTEC-2011)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/GTEC.2011.6167688\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Conference on Green technology and environmental Conservation (GTEC-2011)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/GTEC.2011.6167688","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Adsorption of reactive blue 2 dye from aqueous solution by cocoa (Theobroma) cacao shell: An agro solid waste
Activated carbon prepared from agro waste cocoa (Theobroma cacao) shell has been utilized as the adsorbent for the removal of Reactive blue 2 dye from aqueous solution. Adsorption studies were carried out at different initial concentration and contact time, pH of solution and temperature. Adsorption data were modeled using Langmuir, Freundlich, Tempkin and Dubinin-Raduskevich isotherms. Based on correlation coefficient (r2) values, equilibrium data found fitted well to the Langmuir isotherm. Adsorption kinetics was verified by pseudo-first order, pseudo-second order and Intraparticle diffusion models. The kinetic adsorption data fitted the pseudo-second order kinetic model well and also followed the intra-particle diffusion model. Thermodynamic parameters such as ΔH°, ΔS°, and ΔG° were evaluated. The positive enthalpy shows that the adsorption process was endothermic in nature.
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