Biosorption of Fe from Aqueous Solutions by Syringa Vulgaris Tree Leaves

Ulmus Syringa Vulgaris tree leaves, which are abundant in Iran, were evaluated for removal of Fe From aqueous solution. Maximum biosorption capacities for Syringa Vulgaris were measured as 155.42 mg/g for Fe. For sorbent the most effective pH range was 4–6 for Fe. Metal ion biosorption was increased as the ratio of metal solution to the biomass quantity decreased. Conversely, Biosorption/g biosorbent was decreased as the quantity of biomass increased. The biosorption of metal ion was increased by increasing of the initial metal concentration. The equilibrium data for Fe best fit the Langmuir adsorption isotherm model. The sorbent could be regenerated by using 0.02 mol L-1 HCl during the repetition biosorption–desorption cycles. Biosorption of Fe was investigated in the presence of Na, K, Mg and Cations. The results from these studies show a novel way for using Syringa Vulgaris tree leaves to remove Fe from metal-polluted water.