Effect of sewage sludge on trace element mobility in soils
Adsorption of Be, F, B, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Sr, Mo, Tc, Ag, Cd, Sn, Sb, Cs, Ba, Hg, Pb, Bi, and P was measured in a sandy soil and a sandy loam soil at concentration levels closely corresponding to those to be expected for field conditions. Mobilities of the elements in the soils were calculated from the adsorption data. Of the trace elements studied, F, B, and Tc were found to be very mobile in both the sandy and sandy loam sils. Manganese, Sr, and Sb were highly mobile only in the sandy soil, and Mo in the sandy loam soil. In general, sludge solutions appeared to increase the mobility of elements in a soil. This is due to a combination of complexation by dissolved organic compounds, high background concentrations, and high ionic strengths of the soil solutions. The relative effects of these factors vary strongly among elements. Equations were derived predicting the rates of accumulation in soils and accompanying increases in the soil solutions of trace elements added with sewage sludge. When adsorption was related to soil organic matter content, for many trace elements the strength of adsorption was found to depend only on pH, increasing with increasing pH.
- Research Organization:
- Inst. for Soil Fertility, Haren, The Netherlands
- OSTI ID:
- 5822770
- Journal Information:
- J. Environ. Qual.; (United States), Journal Name: J. Environ. Qual.; (United States) Vol. 11:3; ISSN JEVQA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ADSORPTION
ALKALI METALS
ALKALINE EARTH METALS
ANTIMONY
ARSENIC
BARIUM
BERYLLIUM
BISMUTH
BORON
BUILDUP
CADMIUM
CESIUM
CHEMISTRY
CHROMIUM
COBALT
COPPER
ECOLOGICAL CONCENTRATION
ELEMENTS
ENVIRONMENTAL EFFECTS
ENVIRONMENTAL TRANSPORT
FERTILITY
FLUORINE
HALOGENS
IRON
LEAD
MANGANESE
MASS TRANSFER
MERCURY
METALS
MOLYBDENUM
NICKEL
NONMETALS
PH VALUE
PHOSPHORUS
SELENIUM
SEMIMETALS
SEWAGE
SEWAGE SLUDGE
SILVER
SLUDGES
SOIL CHEMISTRY
SOILS
SORPTION
STRONTIUM
TECHNETIUM
TIN
TRACE AMOUNTS
TRANSITION ELEMENTS
VANADIUM
WASTES
ZINC