STP933

    Pentachlorophenol Adsorption on Soils and Its Potential for Migration into Ground Water

    Published: Jan 1986


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    Abstract

    The adsorption of pentachlorophenol (PCP) on Missouri soils was studied to determine its potential for migration into ground water. The adsorption data obtained, using low concentrations (0.1 to 10 mg/L) of pentachlorophenol, fit the Freundlich isotherm form. Pentachlorophenol, a weak organic acid, was found to adsorb more completely to Missouri soils as pH decreased, converting PCP to its acid form. High soil organic content was found to strongly increase PCP adsorption. However, most (84%) of the PCP adsorption was reversible. Overall, at the pH values observed (5.7, 6.7), Missouri soils would be expected to retard the movement of pentachlorophenol through adsorption.

    Keywords:

    pentachlorophenol, adsorption, ground water pollution, hazardous materials


    Author Information:

    Banerji, SK
    Professor, and professor and chairman, University of Missouri, Columbia, MO

    Piontek, K
    Environmental engineer, CH2M Hill, Denver, CO

    O'Connor, JT
    Professor, and professor and chairman, University of Missouri, Columbia, MO


    Paper ID: STP23075S

    Committee/Subcommittee: D34.02

    DOI: 10.1520/STP23075S


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