Utilization of ZSM-5/TiO₂ Powder and Membrane to Reduce Concentration Cu(II) and Cr(VI) Ions in Water

Cancer is an effect caused by excessive concentrations of Cu(II) and Cr(VI) metal ions in the body. Including health effects of heavy metal ion poisoning industries arise when humans consume fish from various wastes, dyes, electroplating, paint, and battery. Techniques and processes have been developed to separate heavy metal ions which were very dangerous from water by ion exchange, chemical precipitation, and adsorption. Adsorption has no harmful side effects to health, simple, economical and easy to do. Natural materials can be used as adsorbents including ZSM-5, ZSM-5/TiO₂ powder, and membrane. The purpose of this study is to determine the initial, final concentration and the percentage decrease concentration of Cu(II) and Cr(VI) ions in water by ZSM-5/TiO₂ powder and membrane with variations gauze type and irradiation time. The results showed that the highest percentage reduction Cu(II) ion and Cr(VI) ion with 0.25% w/v ZSM-5/TiO₂ powder during UV irradiation 75 minutes were 74.99% and 16.99%. The highest percentage reduction in Cu (II) and Cr (VI) concentration after passing through the ZSM-5/TiO₂ membrane with gauze support 304-400 during 90 minute UV irradiation were 57.72% and 54.65%. As the conclusion ability of ZSM-5/TiO₂ powder is greater than the ZSM-5/TiO₂ membrane in reducing the concentration of Cu(II) and Cr(VI).