Metal removal from solution using readily available inorganic reactive materials

Machodi J Mathaba

doi:10.1016/j.jenvman.2018.03.004

Metal removal from solution using readily available inorganic reactive materials

J Environ Manage. 2018 Jul 1:217:442-446. doi: 10.1016/j.jenvman.2018.03.004. Epub 2018 Apr 6.

Author

Machodi J Mathaba¹

Affiliation

¹ Department of Chemical Engineering, University of Johannesburg, P.O. Box 17011, Doornfontein 2028, Johannesburg, South Africa. Electronic address: mmathaba@uj.ac.za.

PMID: 29627649
DOI: 10.1016/j.jenvman.2018.03.004

Abstract

This research evaluated using inorganic adsorbents for removal of metals from solution. Batch experiments were carried out to determine the effects of adsorbent dosage, initial metal concentration and agitation time on metal removal. The results showed increasing metal ion removal with increasing adsorbent dosage, metal concentration and agitation time. Removal efficiencies of Al³⁺ and Mn²⁺ were reported at above 99% and 98%. Kinetic studies showed that the three adsorbents data on both Al³⁺ and Mn²⁺ removal were pertaining to pseudo-first-order and second-order kinetics and had a good fit to Elovich indicating that the adsorption rate-limiting step could be inferred as chemical sorption.

Keywords: Adsorption; Inorganic adsorbent; Metal removal.

MeSH terms

Adsorption
Hydrogen-Ion Concentration
Kinetics
Metals* / chemistry
Metals* / isolation & purification
Water Pollutants, Chemical*

Substances

Metals
Water Pollutants, Chemical