Optimization of parameters for competitive adsorption of heavy metal ions (Pb +2 , Ni +2 , Cd +2 ) onto activated carbon
Korean Journal of Chemical Engineering(2014)
摘要
This study investigates optimization of various competitive adsorption parameters for removal of Cd(II), Ni(II) and Pb(II) from aqueous solutions by commercial activated carbon (AC) using the Taguchi method. Adsorption parameters such as initial metal concentration of each metal ion (C 0, i ), initial pH (pH 0 ), adsorbent dosage (m) and contact time (t) in batch technique were studied to observe their effects on the total adsorption capacity of metals onto activated carbon (q tot ). The adsorbent dosage has been found to be the most significant parameter. Interactions between C 0, Cd ×C 0, Ni , C 0, Cd ×C 0, Pb and C 0, Ni ×C 0, Pb have been considered for simultaneous metal ions adsorption. The optimum condition for adsorption of metal ions were obtained with C 0, i =100 mg L −1 , pH 0 =7, m=2 g L −1 and t=80 min. Finally, experimental results showed that a multi-staged adsorptive treatment would be necessary to reach the minimal discharge standards of metal ions in the effluent.
更多查看译文
关键词
Heavy Metals,Competitive Adsorption,Activated Carbon,Multi-component
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要