BIOSORPTION OF CHROMIUM (CR) POTENTIAL OF CYANOBACTERIA ISOLATED FROM DIFFERENT ENVIRONMENT
Abstract
ABSTRACT
This study investigated the biosorption potential of cyanobacteria isolated from various environmental sources for the removal of chromium (Cr) from aqueous solutions. The objectives were to isolate and identify cyanobacterial strains, evaluate their biosorption capacity for chromium, and determine their removal efficiency. Experimental results revealed a positive correlation between biomass concentration and chromium removal efficiency. At 0.1 g biomass, removal efficiency was 19.32%, which increased to 45.94% at 0.2 g, 58.81% at 0.3 g, and reached a maximum of 60.96% at 0.4 g biomass. This progressive increase is attributed to the availability of more binding sites and functional groups, such as carboxyl, hydroxyl, and amino groups, as well as enhanced surface area at higher biomass concentrations. The findings align with previous studies indicating that biomass dosage is a critical determinant of biosorption efficiency. The study concludes that biomass optimization is essential for maximizing chromium removal, and recommends further investigation into operational parameters, pilot-scale applications, and biomass regeneration for sustainable use in heavy metal remediation.
Key word: Biosorption, cyanobacterial, chromium (Cr), biomas
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