Adsorption of Cu( Ⅱ) on active carbon derived from navel orange peel from low concentration water was researched,the adsorbing capability were investigated through the impact of solution p H,contact time,initial concentration and carbon dosage on adsorption,and its adsorption isotherm model was analyzed. The results showed that the activated carbon has many middlepore,the adsorption process of the activated carbon on adsorption of low concentration Cu( Ⅱ) wastewater follows the Freundlich isothermal model,t...