Soil cadmium mobility as a consequence of sewage sludge disposal

Journal Article · Fri Oct 01 04:00:00 EDT 1993 · Journal of Environmental Quality

DOI:https://doi.org/10.2134/jeq1993.00472425002200040014x· OSTI ID:223874

Lamy, I ^[1]; Bourgeois, S; Bermond, A ^[2]

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1. Station de Science du Sol, Versailles (France)
2. Institut National Agronomique, Paris (France)

Anaerobically digested liquid sewage sludge was applied as a single treatment to a loamy hydromorphic drained soil, characteristic of agricultural soils in the North of France, at a rate of 11 Mg of dry solids ha{sup -1}. Total Cd concentrations of drainage waters for both amended and unamended plots were monitored at selected times to follow the mobility of Cd after sludge disposal. The drained ground-water of the plot that exhibited the highest discharge of sludge soluble organic matter (SSOM) exhibited about twice the Cd levels of the control plot during the first few weeks following sludge disposal (average of 3 and 1.5 {mu}g L{sup -1} respectively). Laboratory experiments were conducted to provide estimates of the relative binding strength of Cd-soil interactions as well as Cd-SSOM interactions. The behavior of Cd in a mixed sludge-soil system showed that the addition of sludge soluble organic matter to the soil led to a decrease in the sorption of this cation across the pH range between 5 and 7. The laboratory studies highlighted the role of soluble organic matter in soil Cd speciation, and can be used to speculate on the perturbations induced by high levels of sludge soluble organic matter introduced into a soil.

• Sponsoring Organization: USDOE
• OSTI ID: 223874
• Journal Information: Journal of Environmental Quality, Journal Name: Journal of Environmental Quality Journal Issue: 4 Vol. 22; ISSN JEVQAA; ISSN 0047-2425
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
CADMIUM
CHEMICAL COMPOSITION
CONTAMINATION
ECOLOGICAL CONCENTRATION
ENVIRONMENTAL TRANSPORT
SEWAGE SLUDGE
SOILS