STUDY ON ADSORPTION PROPERTY OF MODIFIED DIATOMITE AGAINST CU²⁺ IN WASTEWATER

Liu Ling, Wei Qiye

ABSTRACT:The performance of adsorption for Cu²⁺ was carried out with Polyacrylamide modified diatomite as adsorbent. The experimental results show that the addition amount of modified diatomite, the time of adsorption and the initial concentration of Cu²⁺ have great influence on the adsorption effect of Cu²⁺. When the amount of modified diatomite was 10g/L, the adsorption effect was the best. The adsorption time of the modified diatomite on the adsorption of Cu²⁺ was saturated after 40min. With the increase of Cu²⁺ concentration, the modified diatomite on the removal rate of Cu²⁺ decreased gradually.

Keywords:Modified diatomite, heavy metal ions, wastewater, polyacrylamide