S Kalyani, J Ajitha Priya, P Srinivasa Rao, A Krishnaiah
{"title":"Adsorption of nickel on flyash in natural and acid treated forms.","authors":"S Kalyani, J Ajitha Priya, P Srinivasa Rao, A Krishnaiah","doi":"","DOIUrl":null,"url":null,"abstract":"<p><p>Studies on removal of Ni2+ by adsorption on flyash and acid treated flyash have been carried out at room temperature (30+/-1 degrees C). The adsorption isotherm of Ni2+ on flyash and acid treated flyash was obtained in a batch reactor. Various parameters such as pH, initial concentration of adsorbate and adsorbent dose were studied. The experimental adsorption data fitted reasonably well to Langmuir, Freundlich and Redlich - Peterson isotherms for both the adsorbents. The adsorption follows Lagergren first order kinetic model. The monolayer adsorption model are found to be 41.7 and 62.9 mg/g respectively. Acid treated flyash has been observed to have greater adsorptive capacity than flyash in natural form.</p>","PeriodicalId":84892,"journal":{"name":"Indian journal of environmental health","volume":"45 3","pages":"163-8"},"PeriodicalIF":0.0000,"publicationDate":"2003-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Indian journal of environmental health","FirstCategoryId":"1085","ListUrlMain":"","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
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Abstract
Studies on removal of Ni2+ by adsorption on flyash and acid treated flyash have been carried out at room temperature (30+/-1 degrees C). The adsorption isotherm of Ni2+ on flyash and acid treated flyash was obtained in a batch reactor. Various parameters such as pH, initial concentration of adsorbate and adsorbent dose were studied. The experimental adsorption data fitted reasonably well to Langmuir, Freundlich and Redlich - Peterson isotherms for both the adsorbents. The adsorption follows Lagergren first order kinetic model. The monolayer adsorption model are found to be 41.7 and 62.9 mg/g respectively. Acid treated flyash has been observed to have greater adsorptive capacity than flyash in natural form.
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