SUMMARY

Studying of Cu adsorption of particulate material produced from Bình Yên laterite

Nguyễn Trung Minh, Doãn Đình Hùng

In this study, we prestent thc results of sorption capacity of Cu on OBYQ (Bình Yên modified-granular laterite, Sơn Tây, Hà Nội). XRF result showed that Al₂O₃ and Fe₂O₃ are major components for Binh Yen laterite (OBY). Also, OBY has high BET surface area, suggest that OBY could be the effective sorbent for sorption heavy metal. XRD result indicated that OBYQ from OBY is composed of goethite, hematite, illite, kaolinite,... minerals, which are effective for heavy metal removal in environments. Batch sorption of Cu on the Bình Yên modified-granular laterite (OBYQ) show that the sorption capacity increases with incresing Cu concentracion in solution, and the saturation sorption is reached when the Cu concentracion in solution is higher than 400ppm; Sorption of Cu on OBYQ (0.05 kg) by column experiment showed that the sorption decrease with increasing time during the sorption experiment (as well as increasing volume of output solulion), ratio of output solution concentration (Ce) per input solution concentration (C_o) is C_e/C_o = 0.1-0.9 (sorption from 10 to 90 %) with volume of output Cu solution is 73L, after 28 days. pH of output solution decrease with increasing sorption time from 9.2 to 5.35.