Effect of sewage sludge on the adsorption of polychlorinated biphenyls by three New Mexico soils
The adsorption of polychlorinated biphenyls (PCB's) (54% Cl) by three low-organic matter New Mexico soils amended with sewage sludge was determined by batch equilibration. Adsorption isotherm data were described by the Freundilich equation. An increase in adsorption with increased organic C content was observed. However, for a given organic C content, adsorption in soils preconditioned with sewage sludge differed from soils amended with sludge at the time of adsorption analysis. Adsorption was greater in a clay soil than in two sandy loams. Differences in organic C content described 56.5% of the variance in the Freundlich K constants for PCB retention across all treatments. Incorporating the factor of clay content or specific surface area into the regression analysis accounted for 79.1% of the variance in K. Freundlich constants normalized for organic C content (K/sub oc/) were not cosntant across treatments.
- Research Organization:
- New Mexico State Univ., Las Cruces
- DOE Contract Number:
- AS04-76ET33626
- OSTI ID:
- 6942910
- Journal Information:
- J. Environ. Qual.; (United States), Journal Name: J. Environ. Qual.; (United States) Vol. 13:2; ISSN JEVQA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AROMATICS
CARBON
CHEMICAL REACTIONS
CHEMISORPTION
CHEMISTRY
CHLORINATED AROMATIC HYDROCARBONS
ELEMENTS
FEDERAL REGION VI
GROUND DISPOSAL
HALOGENATED AROMATIC HYDROCARBONS
MANAGEMENT
NEW MEXICO
NONMETALS
NORTH AMERICA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
SEPARATION PROCESSES
SEWAGE
SEWAGE SLUDGE
SLUDGES
SOIL CHEMISTRY
SOILS
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
USA
WASTE DISPOSAL
WASTE MANAGEMENT
WASTE PRODUCT UTILIZATION
WASTES