Adsorption behavior of Crys tal Violet dye in aqueous solution using Co+2 hectorite composite as adsorbent surface

A. Ibrahim
{"title":"Adsorption behavior of Crys tal Violet dye in aqueous solution using Co+2 hectorite composite as adsorbent surface","authors":"A. Ibrahim","doi":"10.24200/amecj.v6.i01.219","DOIUrl":null,"url":null,"abstract":"This study focused on the adsorption behavior of the cationic CrystalViolet (CV) dye from aqueous solutions using a Co+2‒hectoritecomposite as an adsorbent surface. The initial and equilibrium CV dyeconcentrations were determined using a UV-Vis spectrophotometer. Theresults were discussed and presented for the impacts of pH, primary CVdye concentration, composite dosage, and temperature. The optimumconditions were found for eliminating Crys tal Violet dye from theaqueous solution at a pH 4, ideal temperature 293 K, and 0.5 g L-1of composite dose. The pseudo-second-order kinetic, intraparticlediffusion analyzed the tes ts’ data and film diffusion models. Eachmodel’s defining features have been identified, and these models werein good agreement and in charge of regulating the adsorption reaction.The adsorption operation was also thermodynamically examined todetermine thermodynamic variables such as Gibbs free energy (ΔGo),entropy (ΔSo), activation energy (Ea), and enthalpy (ΔHo). The negativevalue of Gibbs free energy (ΔGo) and enthalpy (ΔHo) indicated thatthe adsorption process was a spontaneous and exothermic reaction.While the activation energy (Ea) data which fell within the normalrange for physisorption, was showed at  22.434 kJ mol-1. The physical adsorption occurs between  CV dye and adsorbent .","PeriodicalId":7797,"journal":{"name":"Analytical Methods in Environmental Chemistry Journal","volume":"22 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Analytical Methods in Environmental Chemistry Journal","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.24200/amecj.v6.i01.219","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2

Abstract

This study focused on the adsorption behavior of the cationic CrystalViolet (CV) dye from aqueous solutions using a Co+2‒hectoritecomposite as an adsorbent surface. The initial and equilibrium CV dyeconcentrations were determined using a UV-Vis spectrophotometer. Theresults were discussed and presented for the impacts of pH, primary CVdye concentration, composite dosage, and temperature. The optimumconditions were found for eliminating Crys tal Violet dye from theaqueous solution at a pH 4, ideal temperature 293 K, and 0.5 g L-1of composite dose. The pseudo-second-order kinetic, intraparticlediffusion analyzed the tes ts’ data and film diffusion models. Eachmodel’s defining features have been identified, and these models werein good agreement and in charge of regulating the adsorption reaction.The adsorption operation was also thermodynamically examined todetermine thermodynamic variables such as Gibbs free energy (ΔGo),entropy (ΔSo), activation energy (Ea), and enthalpy (ΔHo). The negativevalue of Gibbs free energy (ΔGo) and enthalpy (ΔHo) indicated thatthe adsorption process was a spontaneous and exothermic reaction.While the activation energy (Ea) data which fell within the normalrange for physisorption, was showed at  22.434 kJ mol-1. The physical adsorption occurs between  CV dye and adsorbent .
以钴+2百托石复合材料为吸附剂表面对紫外光染料的吸附行为
本研究主要研究了阳离子结晶紫(CV)染料在水溶液中的吸附行为,该染料采用Co+2 - hectorit复合材料作为吸附表面。用紫外-可见分光光度计测定了初始浓度和平衡浓度。讨论了pH、初始CVdye浓度、复合用量、温度等因素对合成效果的影响。在pH值为4、理想温度为293 K、复合剂量为0.5 g l -1的条件下,发现了从水溶液中去除紫晶染料的最佳条件。伪二级动力学、颗粒内扩散分析了实验数据和膜扩散模型。确定了每个模型的定义特征,这些模型具有良好的一致性,并负责调节吸附反应。吸附操作还进行了热力学检查,以确定热力学变量,如吉布斯自由能(ΔGo),熵(ΔSo),活化能(Ea)和焓(ΔHo)。吉布斯自由能(ΔGo)和焓(ΔHo)均为负值,表明吸附过程为自发放热反应。而活化能(Ea)数据为22.434 kJ mol-1,在物理吸附的正常范围内。CV染料与吸附剂之间发生物理吸附。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
CiteScore
2.10
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信