IJERPH, Vol. 17, Pages 6696: Study of Evolution of Microbiological Properties in Sewage Sludge-Amended Soils: A Pilot Experience

The objective of this research work is to study, in real conditions, the evolution of microbial concentration in agricultural soils fertilized by biologically treated sewage sludge. The sludge (6.25 tons Ha-1) was applied in two agricultural soils with different textures and crops. A microbiological (total coliforms, Escherichia coli, Staphylococcus aureus, Enterococcus sp., Pseudomonas sp., Salmonella sp. and total mesophylls) and physical-chemical characterization of the sludge, soils and irrigation water were carried out. The evolution of these parameters during sowing, growth and harvesting of crops was studied. Initially, sewage sludge had a higher concentration of microorganisms than soils. Irrigation water also contained microorganisms, fewer than sewage sludge amendment but not negligible. After amendment, there were no differences in the microbiological evolution in the two types of soil. In general, bacterial concentrations after crop harvest were lower than bacterial concentrations detected before sewage sludge amendment. Consequently, the application of sludge from water treatment processes did not worsen the microbiological quality of agricultural soil in this study at real conditions.
Source: International Journal of Environmental Research and Public Health - Category: Environmental Health Authors: Tags: Article Source Type: research

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Source: Molecules - Category: Chemistry Authors: Tags: Article Source Type: research
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Source: Journal of Tropical Medicine - Category: Tropical Medicine Tags: J Trop Med Source Type: research
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Source: Journal of Tropical Medicine - Category: Tropical Medicine Tags: J Trop Med Source Type: research
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Source: Environmental Science and Pollution Research International - Category: Environmental Health Authors: Tags: Environ Sci Pollut Res Int Source Type: research
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Source: Bioorganic Chemistry - Category: Chemistry Authors: Tags: Bioorg Chem Source Type: research
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Source: Molecules - Category: Chemistry Authors: Tags: Article Source Type: research
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Source: International Journal of Microbiology - Category: Microbiology Tags: Int J Microbiol Source Type: research
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Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
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Source: Food Control - Category: Food Science Source Type: research
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