Haifeng Liu, Chao Hu, Lei Guo, Yanru Jin, Ting Jiang, Zhiye Zhang, Lin Yang
{"title":"Removal Efficiency and Kinetics of Fe3+ from Phosphoric Medium by Solvent Extraction","authors":"Haifeng Liu, Chao Hu, Lei Guo, Yanru Jin, Ting Jiang, Zhiye Zhang, Lin Yang","doi":"10.15261/serdj.31.77","DOIUrl":null,"url":null,"abstract":"</p><p>The application of wet-process phosphoric acid in fertilizer is limited due to the excessive Fe<sup>3+ </sup>concentration. In this paper, a fundamental investigation on the removal of Fe<sup>3+</sup> from phosphoric acid with P-15 extractant is conducted. First, effects of several parameters on the extraction rate such as extraction temperature, P-15 concentration, phase ratio O/A on Fe<sup>3+</sup> extraction are carefully investigated. The composition of the extract was verified by slope method and saturation capacity method. Then, the kinetic and control mechanism of the extraction reaction is studied by constant interface cell. The extraction reaction rate equation was obtained by the initial rate method. The calculated activation energy of overall reaction is 15.4 kJ·mol<sup>−1</sup> and the change of enthalpy ∆<i>H</i> = −4.19 kJ·mol<sup>−1</sup> of Fe<sup>3+</sup> is measured by automatic calorimeter. </p>\n<p></p>","PeriodicalId":21785,"journal":{"name":"Solvent Extraction Research and Development-japan","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Solvent Extraction Research and Development-japan","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.15261/serdj.31.77","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
The application of wet-process phosphoric acid in fertilizer is limited due to the excessive Fe3+ concentration. In this paper, a fundamental investigation on the removal of Fe3+ from phosphoric acid with P-15 extractant is conducted. First, effects of several parameters on the extraction rate such as extraction temperature, P-15 concentration, phase ratio O/A on Fe3+ extraction are carefully investigated. The composition of the extract was verified by slope method and saturation capacity method. Then, the kinetic and control mechanism of the extraction reaction is studied by constant interface cell. The extraction reaction rate equation was obtained by the initial rate method. The calculated activation energy of overall reaction is 15.4 kJ·mol−1 and the change of enthalpy ∆H = −4.19 kJ·mol−1 of Fe3+ is measured by automatic calorimeter.
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