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EXTRACTION OF PENTACHLOROPHENOL (PCP) FROM SOILS USING ENVIRONMENTALLY BENIGN ACID SOLUTIONS
Citation:
SUBRAMANIAN, B., V. NAMBOODIRI, AND D. DIONYSIOU. EXTRACTION OF PENTACHLOROPHENOL (PCP) FROM SOILS USING ENVIRONMENTALLY BENIGN ACID SOLUTIONS. Presented at 232nd American Chemical Society National Meeting, San Francisco, CA, September 10 - 14, 2006.
Impact/Purpose:
To inform the public.
Description:
The presence of organic contaminants like PCP in soil is a major environmental concern. Various remediation methods have been used of which soil washing is a common procedure. Many different solvents like surfactants, ionic liquids and cyclodextrins have been studied. the present study describes use of lactic acid solutions as an environmentally friendly and biodegradable extractant. Two model soils namely, montmorillonite (MT) and clean sediment from Caesar's Creek (CC) consists of 3.4% organic matter was spiked with PCP with an initial loading of 100 mg/kg. Results from a study on the extraction efficiencies at different concentrations of lactic acid (1-100%) solutions in water will be presented. The role of solvent pH and soil-solvent (w/v) ratios will also be discussed. Initial results show that the extraction efficiency of PCP from MT is more than that of from CC soil.