{"title":"Comparison between Different Models for the Zn Adsorption in Some Calcareous Soils of Erbil Governate","authors":"Shayan I. Dizayee, Chnar H. Abdulrahman","doi":"10.21271/zjpas.35.5.15","DOIUrl":null,"url":null,"abstract":"This study was investigated to evaluate Zn adsorption using some adsorption isotherms in calcareous soils in Erbil governorate. Soil samples were taken from twelve different agricultural sites Duplicate 1 gm of soil samples were adjusted at 298° K with 50 ml of 0.01 M CaCl2.7H2O solution containing a series of Zn concentrations (0, 2, 4, 8, 16, 32, and 64) mg kg-1 using ZnSO4.7H2O. In each soil sample the amount of Zn adsorbed was calculated by using Langmuir - - pectively. While the lowest value of R2 (0.749 at 298 °K) was recorded by Harken-Juren equation. Based on the results, the effectiveness of the models in description of Zn sorption were arranged as follow: Langmuir > Freundlich > Dubinin-Radushkevich > Temkin > Harken-Juren. The lowest binding energy and maximum adsorption was recorded by Langmuir model which was regarded as the best model.","PeriodicalId":23933,"journal":{"name":"ZANCO Journal of Pure and Applied Sciences","volume":"11 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ZANCO Journal of Pure and Applied Sciences","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.21271/zjpas.35.5.15","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
This study was investigated to evaluate Zn adsorption using some adsorption isotherms in calcareous soils in Erbil governorate. Soil samples were taken from twelve different agricultural sites Duplicate 1 gm of soil samples were adjusted at 298° K with 50 ml of 0.01 M CaCl2.7H2O solution containing a series of Zn concentrations (0, 2, 4, 8, 16, 32, and 64) mg kg-1 using ZnSO4.7H2O. In each soil sample the amount of Zn adsorbed was calculated by using Langmuir - - pectively. While the lowest value of R2 (0.749 at 298 °K) was recorded by Harken-Juren equation. Based on the results, the effectiveness of the models in description of Zn sorption were arranged as follow: Langmuir > Freundlich > Dubinin-Radushkevich > Temkin > Harken-Juren. The lowest binding energy and maximum adsorption was recorded by Langmuir model which was regarded as the best model.
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