Contents Notes |
"Field and laboratory studies were conducted to characterize the chemical properties of municipal sewage sludges. to evaluate the fate of sludge components in soils, and to determine the distribution of trace metals in milling fractions of grains grown on sludge treated soils. Specific studies included (1) characterizing the organic components in sewage sludges, (2) separating sludges into organic and inorganic fractions, (3) examining the capacity of sludge to retain metals, (4) evaluating sludge through spectroscopic, infrared, and electron spin resonance studies, (5) conducting laboratory soil incubation studies to characterize mineralization and nitrification of nitrogen and decomposition of organic carbon in sludge amended soils, (6) determining metal speciation with analytical data for soil solution samples, and (7) evaluating the uptake of Cd, Zn, Ni, Cu, Fe, and Mn in oats, corn, wheat, and soybeans grown in soils treated with sewage sludge." |