HA NOI — Researchers at the Viet Nam Academy of Science and Technology have successfully created a new material that used red mud to treat heavy metal pollution in wastewater.
The material was created by mixing red mud with coal tar oil, kaolinite (a clay mineral), liquid glass (Na2SiO3) and water then heating it to 400-900 degrees Celsius.
Researcher Nguyen Trung Minh said, "The new material is cheap and environmentally friendly."
Products using red mud are believed to help reduce waste in the mining and processing of bauxite and treating heavy metal pollution in water.
Red mud or bauxite residue is a solid waste product produced during the alumina refining process. — VNS