REMOVAL OF Cd 2+ IONS FROM AQUEOUS SOLUTION USING LIVE AND DEAD Bacillus Subtilis

Chemical Engineering Research Bulletin Pub Date : 2011-09-30 DOI:10.3329/CERB.V15I1.6618

V. Govindasamy, Tamilarasan Rengasamy, Dharmendra Das

{"title":"REMOVAL OF Cd 2+ IONS FROM AQUEOUS SOLUTION USING LIVE AND DEAD Bacillus Subtilis","authors":"V. Govindasamy, Tamilarasan Rengasamy, Dharmendra Das","doi":"10.3329/CERB.V15I1.6618","DOIUrl":null,"url":null,"abstract":"Biosorption of heavy metals can be an effective process for the removal of toxic heavy metals present in the wastewater. An attempt is made in the present investigation to remove Cd 2+ ions from aqueous solutions using B.subtilis . Batch experiments were carried out for Cd 2+ removal over a wide range of operating conditions. It has been noticed that the Cd 2+ removal capacity dependent on the initial pH and the initial Cd 2+ concentration. Experimental data were analysed with kinetics and isotherm models. It has been observed that the pseudo second order kinetics and Freundlich isotherm equilibrium model fit well with the present data. The FTIR analysis of bacterial biomass revealed the presence of amino, carboxyl, hydroxyl and carbonyl groups, which are responsible for biosorption of Cd 2+ metal ions. The results indicated that the biomass of B.subtilis is an efficient bioaccumulant for the removal of Cd 2+ ions from aqueous solutions. Key words: Biosorption; Cd2+ removal; Kinetics; Isotherms; Bacillus subtilis-live and dead DOI: http://dx.doi.org/10.3329/cerb.v15i1.6618 Chemical Engineering Research Bulletin 15 (2011) 18-24","PeriodicalId":9756,"journal":{"name":"Chemical Engineering Research Bulletin","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2011-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"14","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Engineering Research Bulletin","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3329/CERB.V15I1.6618","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 14

Abstract

Biosorption of heavy metals can be an effective process for the removal of toxic heavy metals present in the wastewater. An attempt is made in the present investigation to remove Cd 2+ ions from aqueous solutions using B.subtilis . Batch experiments were carried out for Cd 2+ removal over a wide range of operating conditions. It has been noticed that the Cd 2+ removal capacity dependent on the initial pH and the initial Cd 2+ concentration. Experimental data were analysed with kinetics and isotherm models. It has been observed that the pseudo second order kinetics and Freundlich isotherm equilibrium model fit well with the present data. The FTIR analysis of bacterial biomass revealed the presence of amino, carboxyl, hydroxyl and carbonyl groups, which are responsible for biosorption of Cd 2+ metal ions. The results indicated that the biomass of B.subtilis is an efficient bioaccumulant for the removal of Cd 2+ ions from aqueous solutions. Key words: Biosorption; Cd2+ removal; Kinetics; Isotherms; Bacillus subtilis-live and dead DOI: http://dx.doi.org/10.3329/cerb.v15i1.6618 Chemical Engineering Research Bulletin 15 (2011) 18-24

查看原文本刊更多论文

活枯草芽孢杆菌和死枯草芽孢杆菌去除水溶液中的cd2 +离子

生物吸附重金属是去除废水中有毒重金属的有效方法。本研究尝试用枯草芽孢杆菌去除水溶液中的cd2 +离子。在较宽的操作条件下进行了批量实验。已经注意到，Cd 2+的去除能力取决于初始pH和初始Cd 2+浓度。用动力学和等温模型对实验数据进行了分析。结果表明，拟二级动力学和Freundlich等温平衡模型与实验数据吻合较好。对细菌生物量的FTIR分析表明，细菌生物量中存在氨基酸、羧基、羟基和羰基，这些基团负责对Cd +金属离子的生物吸附。结果表明，枯草芽孢杆菌生物量是去除水中Cd +的有效生物蓄积剂。关键词:生物吸附;Cd2 +删除;动力学;等温线;枯草芽孢杆菌-活与死DOI: http://dx.doi.org/10.3329/cerb.v15i1.6618化学工程研究通报15 (2011)18-24

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

Chemical Engineering Research Bulletin

自引率

0.00%

发文量