ABSTRACT

From native peat samples collected from U Minh peatlands, modified peat samples were prepared by treating with 5% HCl solution. Their physico-chemical properties and adsorption abilities for Cu²⁺ and Pb²⁺ ions were investigated. The results showed that U Minh peat samples had high humic acid content, low ash content, pH_ZCP and porosity. The Cu²⁺ and Pb²⁺ adsorption capacities of modified peat samples were higher than that of native ones.

Keywords: peat, adsorption, humic acid, heavy metal ions

Title: Investigation of Cu²⁺ and Pb²⁺ ions adsorption into U Minh peat

TO?M TĂ?T

Tư? ca?c mâ?u than bu?n nguyên khai cu?a vu?ng U Minh, sau đo? tiê?n ha?nh xư? ly? các mẫu than bùn nguyên khai này bă?ng dung di?ch HCl 5%. Đê? ta?i tiê?n ha?nh kha?o sa?t ca?c đă?c ti?nh ho?a ly? va? khả năng hấp thụ các ion kim loại nặng Cu²⁺ va? Pb²⁺ cu?a ca?c mâ?u than bùn nguyên khai va? ca?c mâ?u than bùn đươ?c hoa?t ho?a. Kê?t qua? cho thâ?y ră?ng than bu?n U Minh co? hàm lượng humic acid tương đối cao, pH_ZCP và hàm lượng tro thấp. Dung lươ?ng hâ?p phu? ion Cu²⁺ va? Pb²⁺ cu?a ca?c mâ?u than bùn đươ?c hoa?t ho?a cao hơn ca?c mâ?u than bùn nguyên khai.

Tư? kho?a: than bu?n, sư? hâ?p thu?, humic acid, ion kim loa?i nă?ng