KINETICS AND ISOTHERM STUDIES ON CATIONIC DYES ADSORPTION ONTO ANNONA SQUMOSA SEED ACTIVATED CARBON
KINETICS AND ISOTHERM STUDIES ON CATIONIC DYES ADSORPTION ONTO ANNONA SQUMOSA SEED ACTIVATED CARBON
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发表时间：
2010
期刊：
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通讯作者：
T. Santhi;S. Manonmani
中科院分区：
文献类型：
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作者：
T. Santhi;S. Manonmani
利用低成本、当地可获得的生态友好型吸附剂作为目前昂贵的废水脱除染料方法的理想替代品进行了研究。研究了番槐种子制备的活性炭在模拟废水中去除亚甲基蓝（MB）、甲基红（MR）和孔雀石绿（MG）染料的潜力。MB、MR和MG染料在荔枝种子上的吸附在pH 7.0左右表现出最高的吸附值，并遵循二级动力学，其中颗粒内扩散是速率决定步骤之一。吸附平衡用Langmuir、Freundlich、Dubinin-Radushekevich和Tempkin等温线表示。从番荔枝种子开发的活性炭可以是一个有吸引力的选择，从稀释的工业废水染料去除。
The use of low - cost, locally available and eco-friendly adsorbents has been investigated as an ideal alternative to the current expensive methods of removing dyes from wastewater. This study investigates the potential use of activated carbon prepared from the Annona squmosa seed for the removal of methylene blue (MB) , methyl red (MR) and malachite green (MG) dyes from simulated wastewater. Adsorption of MB, MR and MG dyes on the Annona squmosa seed showed highest values at around pH 7.0, and followed second –order kinetic with intraparticle diffusion as one of the rate determining steps. The adsorption-equilibrium was represented with Langmuir, Freundlich, Dubinin-Radushekevich and Tempkin isotherms. Activated carbon developed from the Annona squmosa seed can be an attractive option for dyes removal from diluted industrial effluents.