Removal of Cr3+ and Mn2+ Ions from Aqueous Solution Using Immobilized Bio-Sorbent
Chemical Science International Journal · pp. 224–230 · Published 31 Mar 2015
10.9734/ACSJ/2015/13734Abstract
This research studied the removal of heavy metal ions from aqueous solution using a bio-sorbent. The bio-sorbent was prepared by entrapping or caging Moringa oleifera bark (IMOB), within a polymeric matrix of Calcium Alginate to produce immobilized bio-sorbent. The sorption efficiencies of heavy metals (Cr3+ and Mn2+ ions) were investigated using the IMOB biomass. The result obtained showed that the sorption efficiency of Cr3+ and Mn2+ by IMOB were 99.22% and 90.13% respectively. The sorption efficiency with respect to contact time, initial metal concentration, ionic strength and pH were investigated. The result obtained showed that the sorption capacity by IMOB decreases with increase in ionic strength, but it increases as the pH, contact time and initial metal concentration increases. The ability of IMOB to adsorb heavy metal ions as shown from the result portrays it as a potential cheaper method for waste water treatment.
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