The Adsorption of Zinc(II) from Aqueous Solution on Modified Diatomite

Abstract

The removal of Zn (II) ions from aqueous solution was studied using raw diatomite and MnO 2 modified diatomite samples at different adsorption parameters such as contact temperature, contact time, initial metal ions concentration and dosage of diatomite. The results showed that modified diatomite had a better adsorption than raw diatomite; adsorption increase with increase of time and then become almost stable, appropriate time is 15 min; adsorption increase with increase of dosage of Mn-ditomite, adsorption reached up to 95.7-97.2 % at 0.8-1.0g/mg dosage of Mn-diatomite to Zn (II) .