Abstract
Chromium (VI) is major heavy metal found in textile industry wastewater that cause environmental pollution. Biosorption of heavy metals by using algae biomass has emerged as a cost-effective and efficient alternative technology. This study aims to develop algae (Chara fragilis sp) biomass as adsorbent for Cr (VI) metal ion in aqueous solution.
In this study, the optimum conditions of the absorption of biomass Chara fragilis sp. to Cr (VI) ions was determined on the parameters of the optimum contact time and adsorbent mass. Cr (IV) was analyzed by using AAS and the pattern of adsorption isotherms was determined. The results showed that Chara fragilis sp biomass has clear ability in adsorbing Cr (VI) ion in aquoeus solution with optimum contact time was 40 min and the adsorbent mass was 1 g. Under those optimum conditions, the percentage of absorption of Cr (VI) were 24% and 27%, respectively. The adsorption isotherm of Chara fragilis followed the Freundlich pattern, which showed that adsorption mechanism occured physically.
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