Reduction of the residual solubility of sulfuric acid sludge, and other residues containing lead, involves converting lead to phosphate at an alkaline pH adjusted with alkali without forming soluble phosphates

摘要

Reduction of the residual solubility of sulfuric acid sludge and other residues containing lead (Pb) involves converting the Pb with phosphate at a pH of not less than 8.0, which is adjusted with alkali not forming hardly-soluble phosphate.