potassium-permanganate and stearic-acid

A laboratory-scale study with a sand column was designed to simulate trichloroethylene (TCE) pollution in the aquifer environment with three-section controlled-release potassium permanganate (CRP) barriers. The main objective of this study was to evaluate the feasibility of CRP barriers in remediation of TCE in aquifers in a long-term and controlled manner. CRP particles with a 1:3 molar ratio of KMnO4 to stearic acid showed the best controlled-release properties in pure water, and the theoretical release time was 138.5 days. The results of TCE removal in the test column indicated that complete removal efficiency of TCE in a sand column by three-section CRP barriers could be reached within 15 days. The molar ratio of KMnO4 to TCE in the three-section CRP barriers was 16:1, which was much lower than 82:1 as required when KMnO4 solution is used directly to achieve complete destruction of TCE. This result revealed that the efficiency of CRP for remediation of TCE was highly improved after encapsulation.

Topics: Environmental Restoration and Remediation; Groundwater; Manganese Compounds; Oxides; Potassium Permanganate; Stearic Acids; Trichloroethylene; Water Pollutants, Chemical

Topics: Acetates; Chromatography; Colorimetry; Cyclopropanes; Fats, Unsaturated; Fatty Acids; Glycerol; Infrared Rays; L Forms; Lipids; Oleic Acid; Palmitic Acid; Potassium Permanganate; Proteus; Research; Spectrum Analysis; Stearic Acids; Water

Topics: Cholesterol; Chromatography; Chromatography, Gas; Esters; Fats, Unsaturated; Fatty Acids; Glycerides; Oleic Acid; Palmitic Acid; Periodic Acid; Potassium Permanganate; Research; Stearic Acids