Treatment Of Contaminated Soils Research Articles

Immobilization of White Rot Fungus, Phanerochaete chrysosporium and its applications to wastewater and contaminated soil treatment

Immobilization of White Rot Fungus, Phanerochaete chrysosporium and its applications to wastewater and contaminated soil treatment

Impact of common salts on oxidation of alcohols and chlorinated hydrocarbons

Aqueous oxidations of phenol, methanol, ethanol, n-propanol, n-butanol, chloroethanol, chloropropane and chlorobutane were conducted to evaluate the impact of common salts and bases on oxidation with hydrogen peroxide. Oxidation rates increased up to greater than two orders of magnitude, depending on the electrolytes. Sodium and potassium electrolytes generally promoted oxidation at temperatures near 100°C with sodium promoting oxidation better than potassium. Ionic interactions among electrolytes change the nature of their catalytic activity. In the presence of nitric acid, calcium was the most effective of these metals for promoting oxidation. Using soluble salts is proposed for wet-air oxidation and contaminated soil treatment.

EPA's assessment of European contaminated soil treatment techniques

AbstractSite remediation is a pressing issue in European countries due to limited availability of land. Therefore, much progress is being made in the development of effective technologies for remediating contaminated sites. The purpose of the program described in this paper was to investigate the most successful and innovative European technologies for potential introduction into U.S. markets. Phase I of this EPA–sponsored project was a 9‐month research effort which identified 95 innovative technologies in use or being researched in foreign countries. During Phase II, the most promising technologies identified in Phase I were studied in–depth through personal interviews with the engineers who research and apply these technologies, and through tours of laboratory models and full–scale installations. Phase III of the assessment effort culminated in the first forum on innovative domestic and international hazardous waste treatment technologies on June 19–21, 1989, in Atlanta, Georgia. The most successful full–scale technologies investigated were developed in the Netherlands and West Germany. These technologies include vacuum extraction of hydrocarbons from soil, in situ washing of cadmium‐polluted soil, in situ steam stripping, and a number of landfarming and soil washing operations. The paper provides description of 11 soil remediation techniques that have shown such promise in laboratory studies or in practice to warrant consideration of their use in the United States, and summary information on the international technologies selected for presentation at the Phase III forum as they relate to soils remediation.