Photolytic recovery of inorganic mercury compounds as mercury poisoning or enviromental pollutants by complexation with n-(2-methyl- phenyl) 4-nitro-thiobenzamide ligand

Abstract

One mmol of mercury compounds, eg. mercuric oxide, mercuric fluoride and mercuric nitrate, was added to a solution of N-(2-methyl-phenyl)-4-nitro- thiobenzamide (0.273 g, 1 mmol) at ambient temperature for 1 h with stirring and irradiation by a 400W high pressure mercury lamp. The mixture was filtered and pale yellow crystals were separated from the solution and more than 95% of Hg(II) was removed from solution. This chelating process using N-(2-methyl-phenyl) 4-nitro-thiobenzamide ligand shows promise for remediation of mercuric wastes below the Environmental Protection Agency standards as well as potential for recycling of mercury. © by PSP Volume 14 - No 2. 2005.