The Removal of Mercury from Aqueous Solutions by Wheat Husk
Subject Areas : environmental management
Keywords: Adsorption, Mercury, wheat husk, Adsorption isotherm, Agricultural,
Abstract :
In this study, the adsorption of mercury from aqueous solutions by agricultural waste (wheat Husk) was investigated. The effect of such parameters as solution pH, initial concentration, temperature, particle size, and adsorbent quantity was studied in batch experiments. The results show that the decrease in the initial concentration, increase in adsorbent quantity, decrease in paticle size, and increase in temperature cause an increase in adsorption. The increase in pH up to 4 increases adsorption. However, for pH>4, the adsorption remains constant. Meanwhile, Langmuir and Freundlich models were applied to determine isotherm equilibrium curves. The results show a better conformity with Freundlich model.