天然阿尔及利亚粘土去除海水中铬离子的研究

IF 0.6 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Annales De Chimie-science Des Materiaux Pub Date : 2021-04-30 DOI:10.18280/ACSM.450202

Rachid Chebbi, Amar Fadel, A. Aidi

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引用次数: 1

摘要

本文研究了天然阿尔及利亚膨润土(NAB)吸附法去除合成咸淡水中的铬离子，通过FTIR、XRD和SEM/EDS分析对矿物粘土进行了表征。主要理化参数的影响;考察了粘土投加量、初始金属离子浓度、pH和接触时间对Cr去除率的影响。结果表明，搅拌5分钟即可达到平衡。Cr的截留量随吸附剂剂量的增加而增加，随初始金属离子浓度的增加而降低。采用Langmuir和Freundlich等温模型测定了膨润土作为吸附剂的效率。所得结果表明，Langmuir模型对实验数据有很好的适应性。通过对原料膨润土的动力学研究，验证了其吸附机理以准二级吸附为主。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.

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来源期刊

Annales De Chimie-science Des Materiaux 工程技术-材料科学：综合

CiteScore

1.70

自引率

25.00%

发文量

审稿时长

>12 weeks

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.