Adsorption Behavior of Bamboo Charcoal for As(III)Ion

The adsorption behavior of bamboo charcoal for As(Ⅲ) ion in water solution was studied.Effects of some factors(pH,quantity of absorbent,absorbing time,temperature,initial concentration) on the removing of As(Ⅲ) ion from water solution were investigated.The results showed that ① bamboo charcoal solution performs excellent adsorption effects to the As(Ⅲ) when the pH value is 3.0 and 12.5,so that it can keep the absorption for As(Ⅲ) ion in a good level;② the absorption rate decreases with the increasing of initial concentration of As(Ⅲ) and the absorption will be in balancing in 180 min.The isothermal adsorption behaviors of the bamboo charcoal for As(Ⅲ) ion obey the Freundlich isothermal equation.The best adsorption temperature is 30℃ in acid condition and 40℃ in basic condition respectively.So the bamboo charcoal is an ideal absorption material for the removing of As(Ⅲ)ion.