氧化钙吸附法去除水溶液中的磷酸盐

IF 0.4 Q4 CHEMISTRY, ANALYTICAL
Asma Belaidouni, Z. Dali-Youcef, T. Attar, S. Bekheira, Rim Belbal
{"title":"氧化钙吸附法去除水溶液中的磷酸盐","authors":"Asma Belaidouni, Z. Dali-Youcef, T. Attar, S. Bekheira, Rim Belbal","doi":"10.17721/fujcv10i1p142-154","DOIUrl":null,"url":null,"abstract":"The aim of this work is the removal of phosphates from an aqueous solution by adsorption on a new, inexpensive adsorbent, calcium oxide. We have also shown interest in the choice of removal method, which is adsorption. The kinetic study of the removal of phosphate ions by adsorption on calcium oxide allowed us to calculate the value of adsorption capacity as a function of the parameters affecting adsorption: Amount of adsorbent, initial concentration of phosphate ion solution, pH of the mixture and temperature. The study of adsorption isotherms showed that the Freundlich model is the most appropriate for the phenomenon of phosphate ion adsorption. Modeling of the kinetic data by the pseudo-first order and pseudo-second order equations shows that the adsorption process is best described by the second order equation. Thermodynamic parameters such as enthalpy ΔH°, entropy ΔS° and free enthalpy ΔG° were also evaluated to determine the nature of adsorption. The results show that the adsorption process is a spontaneous and endothermic physisorption.","PeriodicalId":42056,"journal":{"name":"French-Ukrainian Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.4000,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Removal of Phosphates in Aqueous Solution by Adsorption on Calcium Oxide\",\"authors\":\"Asma Belaidouni, Z. Dali-Youcef, T. Attar, S. Bekheira, Rim Belbal\",\"doi\":\"10.17721/fujcv10i1p142-154\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The aim of this work is the removal of phosphates from an aqueous solution by adsorption on a new, inexpensive adsorbent, calcium oxide. We have also shown interest in the choice of removal method, which is adsorption. The kinetic study of the removal of phosphate ions by adsorption on calcium oxide allowed us to calculate the value of adsorption capacity as a function of the parameters affecting adsorption: Amount of adsorbent, initial concentration of phosphate ion solution, pH of the mixture and temperature. The study of adsorption isotherms showed that the Freundlich model is the most appropriate for the phenomenon of phosphate ion adsorption. Modeling of the kinetic data by the pseudo-first order and pseudo-second order equations shows that the adsorption process is best described by the second order equation. Thermodynamic parameters such as enthalpy ΔH°, entropy ΔS° and free enthalpy ΔG° were also evaluated to determine the nature of adsorption. The results show that the adsorption process is a spontaneous and endothermic physisorption.\",\"PeriodicalId\":42056,\"journal\":{\"name\":\"French-Ukrainian Journal of Chemistry\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.4000,\"publicationDate\":\"2022-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"French-Ukrainian Journal of Chemistry\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.17721/fujcv10i1p142-154\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"CHEMISTRY, ANALYTICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"French-Ukrainian Journal of Chemistry","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.17721/fujcv10i1p142-154","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}
引用次数: 1

摘要

这项工作的目的是通过吸附一种新的,廉价的吸附剂,氧化钙从水溶液中去除磷酸盐。我们也对选择吸附的去除方法感兴趣。通过对氧化钙吸附去除磷酸盐离子的动力学研究,我们可以计算出吸附容量的值作为影响吸附的参数的函数:吸附剂的用量、磷酸盐离子溶液的初始浓度、混合物的pH值和温度。吸附等温线的研究表明,Freundlich模型最适合磷酸盐离子的吸附现象。用拟一阶和拟二阶方程对动力学数据进行建模,结果表明二阶方程最能描述吸附过程。热力学参数如焓ΔH°,熵ΔS°和自由焓ΔG°也进行了评估,以确定吸附的性质。结果表明,吸附过程为自发吸热物理吸附。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Removal of Phosphates in Aqueous Solution by Adsorption on Calcium Oxide
The aim of this work is the removal of phosphates from an aqueous solution by adsorption on a new, inexpensive adsorbent, calcium oxide. We have also shown interest in the choice of removal method, which is adsorption. The kinetic study of the removal of phosphate ions by adsorption on calcium oxide allowed us to calculate the value of adsorption capacity as a function of the parameters affecting adsorption: Amount of adsorbent, initial concentration of phosphate ion solution, pH of the mixture and temperature. The study of adsorption isotherms showed that the Freundlich model is the most appropriate for the phenomenon of phosphate ion adsorption. Modeling of the kinetic data by the pseudo-first order and pseudo-second order equations shows that the adsorption process is best described by the second order equation. Thermodynamic parameters such as enthalpy ΔH°, entropy ΔS° and free enthalpy ΔG° were also evaluated to determine the nature of adsorption. The results show that the adsorption process is a spontaneous and endothermic physisorption.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
French-Ukrainian Journal of Chemistry
French-Ukrainian Journal of Chemistry CHEMISTRY, ANALYTICAL-
自引率
0.00%
发文量
13
审稿时长
4 weeks
×
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