Removal of cobalt (II) ions from aqueous solution by using alternative adsorbent industrial red mud waste material

International Journal of Physical Sciences

Hayrunnisa Nadaroglu¹ 

关键词: Red mud;    cobalt removal;    aqueous solution;    adsorption isotherms.;   

DOI  :  10.5897/IJPS11.1748

学科分类：物理（综合）

来源: Academic Journals

【 摘 要 】

This study on the removal of cobalt ions from aqueous solutions by red mud was conducted in batch condition. Its objective was to investigate the possibility of using red mud waste materialas an alternative to high cost commercial adsorbent materials for the removal of cobalt from aqueous solution. In this study, batch experiments were carried out for the adsorption of cobalt onto red mud industry waste. The red mud waste material was successfully used for the removal of cobalt ion from aqueous solution and the technique appears industrially applicable and viable.The potential of economically cheap waste materials like red mud was assessed for cobalt adsorption from aqueous solutions.The operating variables studied were contact time, initial solution pH, initial metal concentration, temperature and adsorbent dosage. The experimental investigation results show that activated red mud has a high level of adsorption capacity for cobalt ion. The adsorption data was correlated with the Langmuir and Freundlich isotherm models. It was found out that the Langmuir and Freundlich isotherms fitted well to the data. Consequently, it was concluded that the red mud can be successfully used for the removal of the cobalt ions from the aqueous solutions with heavy metals.

【 授权许可】

CC BY