REMOVAL OF METHYLENE BLUE FROM AQUEOUS SOLUTION BY BIOADSORPTION ONTO Ricinus communis EPICARP ACTIVATED CARBON

T. Santhi, S. Manonmani
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引用次数: 33

Abstract

Carbon prepared from the epicarp of Ricinus communis was used to remove a textile dye (methylene blue (MB)) from an aqueous solution by adsorption technique under varying conditions of agitation time, dye concentration, adsorbent dose and pH. Adsorption depended on solution pH, dye concentration, carbon concentration and contact time. Adsorption followed both Langmuir and Freundlich isotherm models. The adsorption capacity was found to be 62.5mg/g at a neutral pH of 7 for the particle size of 125-250 µm at room temperature (32±2°C). The kinetics of adsorption of MB obeys Pseudo-first order. The results in this study indicated that activated carbon from Ricinus communis was an attractive candidate for removing cationic dyes from the dye wastewater. Keywords: Epicarp, Ricinus communis, Adsorption, Methylene blue, Kinetics DOI = 10.3329/cerb.v13i1.2518 Chemical Engineering Research Bulletin 13 (2009) 1-5
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蓖麻外皮活性炭生物吸附去除水溶液中的亚甲基蓝
以蓖麻外果皮为原料,在搅拌时间、染料浓度、吸附剂剂量和pH值等条件下,采用吸附法对纺织染料亚甲基蓝(MB)进行了脱除。吸附符合Langmuir和Freundlich等温模型。在室温(32±2℃)条件下,当中性pH = 7、粒径为125 ~ 250µm时,吸附量为62.5mg/g。吸附动力学服从准一级动力学。本研究结果表明,蓖麻活性炭是去除染料废水中阳离子染料的理想选择。关键词:外皮,蓖麻,吸附,亚甲基蓝,动力学DOI = 10.3329/cerb.v13i1.2518化学工程研究通报13 (2009)1-5
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