Abstract

Red mud is the solid waste from exploitation process of bauxite and alumina refinement. On the world, many studies on the processing of red mud have been carried out, aiming to eliminate a part or all of this mud and take full advantage of its useful components.

In this article, the authors develop the ideas of taking full advantage of useful components of red mud, aiming to create a new material having the capability of processing of heavy metal contamination of waste-water, of high adsorption capability, low cost price, friendly with the environment and conformable with Vietnamese conditions. Initial results of the study on adsorption with Cu²⁺,  Pb²⁺, Zn²⁺, Cd²⁺ and Cr²⁺ metals of material made from the Bảo Lộc and Lâm Đồng red mud, its physico-chemical and other isothermal adsorption parameters have been showing the very great capability of using red mud in the processing of waste-water in the conditions of our country.