Journal of Pharmacognosy and Phytochemistry
Vol. 8, Special Issue 2 (2019)
Influence of red mud on remediation of heavy metal polluted soil
NP Navnage, SP Bainade, PN Patle, PR Kadu, P Ramteke and A Gabhane
As the problem of solid wastes removal has now attained multifaceted dimensions, it becomes crucial either to find appropriate ways for the safe and sound disposal of these wastes or to suggest novel uses, considering them as by-products. Bauxite refining is a typical case of chemical processing, which yields red mud, a solid waste by-product with concomitant problems and costs in handling, storage and a search for further uses. Red mud is produced during digestion of pulverized bauxite with sodium hydroxide at elevated temperatures and pressures, according to the Bayer method. It will generally issue from the washing thickeners as a highly alkaline (PH 10-12.5) slurry at approximately 15-30 % solids, and be pumped to whom correspondence should be addressed to a disposal lake. Iron impurities impart the brick red colour of the mud. Red mud is a waste product from bauxite processing: it is principally composed of fine particles of silica and Fe- Al-Ca-Ti oxide and hydroxides which are responsible for its high surface reactivity. The aim of this paper was to investigate, the efficacy of red mud in reducing the release of contamination from a complex waste material (Heavy metal)
Pages: 56-58 | 1337 Views 215 Downloads
NP Navnage, SP Bainade, PN Patle, PR Kadu, P Ramteke and A Gabhane. Influence of red mud on remediation of heavy metal polluted soil. J Pharmacogn Phytochem 2019;8(2S):56-58.