Investigating the Ability of Garlic Leaves and Extracted Celluloses From Carthamus Tinctorius to Remove Cadmium Ions From Aqueous Solutions

In this study, potential of garlic leaves powder to biosorption of cadmium from industrial wastewater effluent was investigated. The effects of pH, biomass dose and initial concentration of cadmium on the removal of biosorption and uptake capacity were examined. Range of pH, biomass dose and initial concentration of cadmium were 2-8, 0.1-4 g/l and 50-300 mg/l, respectively. According to results, the most cadmium removal (45.63%) and uptake capacity (6.25 mg/g) were obtained in pH of 5, biomass dose of 0.1 g/l and initial cadmium concentration of 100 mg/l. The use of synthesized chemical adsorbents including cellulose, aldehyde functionalized cellulose, amino functionalized cellulose, acetate cellulose and 2-amino pyridine supported on cellulose also were shown that the percentage of removal of cadmium ions by these synthetic materials were a few percentage higher from garlic leaves powder. But, the lower absorption capacity of these materials indicates the high performance of garlic leaf powder to remove heavy metal ions from aqueous solutions. Therefore, use of garlic leaves powder as a biological biosorption is the appropriate candidate and will reduce about 50% the risk of cadmium contamination in industrial streams.