Attenuation Kinetics and Desorption Performance of artocarpus altilis Seed Husk for Co (II), Pb (II) and Zn (II) Ions

IF 1.3 4区 工程技术 Q4 CHEMISTRY, MULTIDISCIPLINARY
K. Akpomie, Linda Obiageli Eluke, V. Ajiwe, C. Alisa
{"title":"Attenuation Kinetics and Desorption Performance of artocarpus altilis Seed Husk for Co (II), Pb (II) and Zn (II) Ions","authors":"K. Akpomie, Linda Obiageli Eluke, V. Ajiwe, C. Alisa","doi":"10.30492/IJCCE.2018.30205","DOIUrl":null,"url":null,"abstract":"The potential of Bread Fruit (artocarpus altilis)Seed Husk (BFSH) as low-cost biosorbent for the removal of Pb (II), Zn (II) and Co (II) ions from aqueous solution was investigated. The adsorbent was characterized by the Fourier Transform InfraRed (FT-IR)spectroscopy, Scanning Electron Microscopy (SEM) and X-Ray Diffraction (XRD). The batch methodology was utilized to determine the effect of pH, metal ion concentration, adsorbent dose, contact time and temperature on biosorption. Data generated were fitted into appropriate isotherm, kinetic and thermodynamic models. The effect of pH showed an increase in adsorption of metals with an increase in pH and an optimum pH of 5.0 was obtained for Pb (II), while 6.0 were obtained for Co (II) and Zn (II) ions biosorption. An equilibrium sorption contact time of 30, 40 and 60 min was obtained for Co (II), Zn (II) and Pb (II) ions respectively. The biosorption of metal ions was in the order Co (II) > Pb (II) > Zn (II). In general, the Freundlich model provided a better fit than the Langmuir, Tempkin, and Dubinin-Radushkevich isotherm models with R2 values greater than 0.9. The pseudo-first-order kinetic model was applicable in the adsorption of Pb (II) and Zn (II) ions while the pseudo-second-order model provided the best fit for Co (II) ion adsorption. The adsorption mechanism was found to be controlled by the liquid film diffusion model (R2>0.9) rather than the intraparticle diffusion model (R2<0.9). Thermodynamics revealed a spontaneous, feasible, exothermic physisorption process and over 60% of the metal ions were desorbed using 0.1M HCl and 0.1M NaOH as eluent. The results showed that BFSH could be utilized as low cost adsorbent for the removal of toxic heavy metals from solution.","PeriodicalId":14572,"journal":{"name":"Iranian Journal of Chemistry & Chemical Engineering-international English Edition","volume":"48 1","pages":"171-186"},"PeriodicalIF":1.3000,"publicationDate":"2018-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"12","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Iranian Journal of Chemistry & Chemical Engineering-international English Edition","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.30492/IJCCE.2018.30205","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 12

Abstract

The potential of Bread Fruit (artocarpus altilis)Seed Husk (BFSH) as low-cost biosorbent for the removal of Pb (II), Zn (II) and Co (II) ions from aqueous solution was investigated. The adsorbent was characterized by the Fourier Transform InfraRed (FT-IR)spectroscopy, Scanning Electron Microscopy (SEM) and X-Ray Diffraction (XRD). The batch methodology was utilized to determine the effect of pH, metal ion concentration, adsorbent dose, contact time and temperature on biosorption. Data generated were fitted into appropriate isotherm, kinetic and thermodynamic models. The effect of pH showed an increase in adsorption of metals with an increase in pH and an optimum pH of 5.0 was obtained for Pb (II), while 6.0 were obtained for Co (II) and Zn (II) ions biosorption. An equilibrium sorption contact time of 30, 40 and 60 min was obtained for Co (II), Zn (II) and Pb (II) ions respectively. The biosorption of metal ions was in the order Co (II) > Pb (II) > Zn (II). In general, the Freundlich model provided a better fit than the Langmuir, Tempkin, and Dubinin-Radushkevich isotherm models with R2 values greater than 0.9. The pseudo-first-order kinetic model was applicable in the adsorption of Pb (II) and Zn (II) ions while the pseudo-second-order model provided the best fit for Co (II) ion adsorption. The adsorption mechanism was found to be controlled by the liquid film diffusion model (R2>0.9) rather than the intraparticle diffusion model (R2<0.9). Thermodynamics revealed a spontaneous, feasible, exothermic physisorption process and over 60% of the metal ions were desorbed using 0.1M HCl and 0.1M NaOH as eluent. The results showed that BFSH could be utilized as low cost adsorbent for the removal of toxic heavy metals from solution.
高原蒿皮对Co (II)、Pb (II)和Zn (II)离子的衰减动力学及解吸性能
研究了面包果(artocarpus altilis)种子皮(BFSH)作为低成本生物吸附剂去除水中Pb (II)、Zn (II)和Co (II)离子的潜力。采用傅里叶变换红外光谱(FT-IR)、扫描电镜(SEM)和x射线衍射(XRD)对吸附剂进行了表征。采用批量法测定了pH、金属离子浓度、吸附剂剂量、接触时间和温度对生物吸附的影响。生成的数据被拟合到合适的等温线、动力学和热力学模型中。pH对金属的吸附作用随着pH的增加而增加,Pb (II)的最佳吸附pH为5.0,Co (II)和Zn (II)离子的最佳吸附pH为6.0。Co (II)、Zn (II)和Pb (II)离子的平衡吸附接触时间分别为30min、40min和60min。对金属离子的生物吸附顺序为Co (II) > Pb (II) > Zn (II)。总体而言,Freundlich模型拟合效果优于Langmuir、Tempkin和Dubinin-Radushkevich等温线模型,R2值均大于0.9。拟一级动力学模型适用于Pb (II)和Zn (II)离子的吸附,拟二级动力学模型适用于Co (II)离子的吸附。发现吸附机理受液膜扩散模型控制(R2>0.9),而不受颗粒内扩散模型控制(R2<0.9)。热力学结果表明,以0.1M的HCl和0.1M的NaOH为洗脱液,金属离子的解吸率超过60%,为自发的、可行的放热吸附过程。结果表明,BFSH可作为一种低成本的吸附剂用于去除溶液中的有毒重金属。
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
2.80
自引率
22.20%
发文量
0
审稿时长
6-12 weeks
期刊介绍: The aim of the Iranian Journal of Chemistry and Chemical Engineering is to foster the growth of educational, scientific and Industrial Research activities among chemists and chemical engineers and to provide a medium for mutual communication and relations between Iranian academia and the industry on the one hand, and the world the scientific community on the other.
×
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:604180095
Book学术官方微信