{"title":"天然阿尔及利亚粘土去除海水中铬离子的研究","authors":"Rachid Chebbi, Amar Fadel, A. Aidi","doi":"10.18280/ACSM.450202","DOIUrl":null,"url":null,"abstract":"Received: 23 November 2020 Accepted: 28 March 2021 This paper studies the removal of chromium ions from synthetic brackish water by an adsorption method using natural Algerian Bentonite (NAB), the mineral clay was characterized through FTIR, XRD and SEM/EDS analysis. The effect of the main physicochemical parameters; namely: clay dosage, initial metal ion concentration, pH, and contact time on the removal of Cr was investigated. The results showed that equilibrium was attained within 5 minutes of stirring time. The retention capacity of Cr increased with the increase of adsorbent dose and decreased with the increased initial metal ion concentration. The Langmuir and Freundlich isotherm models were applied to determine the efficiency of bentonite used as an adsorbent. According to the obtained results, the Langmuir model adjusts very well to the experimental data. Based on the kinetic studies for the raw bentonite, it was verified that the mechanism corresponds to predominant pseudo-secondorder adsorption.","PeriodicalId":7897,"journal":{"name":"Annales De Chimie-science Des Materiaux","volume":"134 1","pages":"105-112"},"PeriodicalIF":0.6000,"publicationDate":"2021-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"The Elimination by Natural Algerian Clay of Chromium Ions from Salt Water\",\"authors\":\"Rachid Chebbi, Amar Fadel, A. Aidi\",\"doi\":\"10.18280/ACSM.450202\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Received: 23 November 2020 Accepted: 28 March 2021 This paper studies the removal of chromium ions from synthetic brackish water by an adsorption method using natural Algerian Bentonite (NAB), the mineral clay was characterized through FTIR, XRD and SEM/EDS analysis. The effect of the main physicochemical parameters; namely: clay dosage, initial metal ion concentration, pH, and contact time on the removal of Cr was investigated. The results showed that equilibrium was attained within 5 minutes of stirring time. The retention capacity of Cr increased with the increase of adsorbent dose and decreased with the increased initial metal ion concentration. The Langmuir and Freundlich isotherm models were applied to determine the efficiency of bentonite used as an adsorbent. According to the obtained results, the Langmuir model adjusts very well to the experimental data. Based on the kinetic studies for the raw bentonite, it was verified that the mechanism corresponds to predominant pseudo-secondorder adsorption.\",\"PeriodicalId\":7897,\"journal\":{\"name\":\"Annales De Chimie-science Des Materiaux\",\"volume\":\"134 1\",\"pages\":\"105-112\"},\"PeriodicalIF\":0.6000,\"publicationDate\":\"2021-04-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Annales De Chimie-science Des Materiaux\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.18280/ACSM.450202\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Annales De Chimie-science Des Materiaux","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.18280/ACSM.450202","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
The Elimination by Natural Algerian Clay of Chromium Ions from Salt Water
Received: 23 November 2020 Accepted: 28 March 2021 This paper studies the removal of chromium ions from synthetic brackish water by an adsorption method using natural Algerian Bentonite (NAB), the mineral clay was characterized through FTIR, XRD and SEM/EDS analysis. The effect of the main physicochemical parameters; namely: clay dosage, initial metal ion concentration, pH, and contact time on the removal of Cr was investigated. The results showed that equilibrium was attained within 5 minutes of stirring time. The retention capacity of Cr increased with the increase of adsorbent dose and decreased with the increased initial metal ion concentration. The Langmuir and Freundlich isotherm models were applied to determine the efficiency of bentonite used as an adsorbent. According to the obtained results, the Langmuir model adjusts very well to the experimental data. Based on the kinetic studies for the raw bentonite, it was verified that the mechanism corresponds to predominant pseudo-secondorder adsorption.
期刊介绍：
The ACSM is concerning the cutting-edge innovations in solid material science. The journal covers a broad spectrum of scientific fields, ranging all the way from metallurgy, semiconductors, solid mineral compounds, organic macromolecular compounds to composite materials. The editorial board encourages the submission of original papers that deal with all aspects of material science, including but not limited to synthesis and processing, property characterization, reactivity and reaction kinetics, evolution in service, and recycling. The papers should provide new insights into solid materials and make a significant original contribution to knowledge.
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