Kinetics and equilibrium studies of removal of an azo dye from aqueous solution by adsorption onto scallop

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• 作者：Mehdi Shirzad-Siboni ; Alireza Khataee ; Sang W. Joo
• 关键词：Azo dye ; Scallop ; Kinetic models ; Adsorbent ; Wastewater treatment
• 刊名：Journal of Industrial and Engineering Chemistry
• 出版年：25 March, 2014
• 年：2014
• 卷：20
• 期：2
• 页码：610-615
• 全文大小：1363 K

文摘

In the present work removal of an azo dye (Reactive Black 5) was investigated from aqueous solution by adsorption onto scallop as a low-cost and widely available adsorbent. The effect of various operational parameters, such as contact time, pH, initial dye concentration and adsorbent dosage on the removal efficiency of dye was studied. Removal efficiency declined with the increase in solution pH and initial dye concentration but with the decrease in adsorbent dosage. Experimental equilibrium and kinetics data were fitted by Langmuir and Freundlich isotherms and pseudo-first-order and pseudo-second-order kinetic models, respectively.