Extraction of heavy metals from aqueous solutions in a modified rotating disc extractor

Journal of Water Reuse and Desalination

Amer, B. A.¹  Abdel-Aziz, M. H.¹  Amin, N. K.¹  El-Ashtoukhy, E.-S. Z.² 

[1] Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt;Chemical and Materials Engineering Department, Faculty of Engineering, King Abdulaziz University, Rabigh 21911, Saudi Arabia

关键词: extraction;    heavy metals;    modified disc;    naphthenic acid;    solvent extraction;    wastewater;   

DOI  :  10.2166/wrd.2016.178

学科分类：工程和技术（综合）

来源: IWA Publishing

【 摘 要 】

Extraction of Cu+2 from dilute aqueous solutions as a case study by liquid cation exchanger in a modified rotating disc extractor was studied. The liquid cation exchanger consisted of naphthenic acid dissolved in an inert carrier kerosene. Variables studied were: initial concentration of Cu+2, disc rotational speed, concentration of naphthenic acid, flow rates of continuous and dispersed phase, degree of roughness, and number of rotating discs. The rate of extraction increased with increasing rotational speed, concentration of naphthenic acid, flow rate of dispersed phase, degree of roughness and number of discs to a certain number, while increasing Cu+2 concentration and flow rate of continuous phase decreased the rate of extraction. All variables were correlated by the dimensionless mass transfer equation. Possible practical applications of the present data in treating aqueous waste from different sources such as petrochemical industries, electroplating, and hydrometallurgical processes was highlighted.

【 授权许可】

CC BY-NC-ND