engleski

Potential biomarkers for sewage sludge pollution monitoring

The increased production of sewage sludge from municipal waste water treatment plants (WWTP) requires alternative methods for its final disposal. Since sewage sludge contains nutrients that enhance soil properties, land application is usually the most economic disposal alternative. However, sewage sludge may contain toxic substances (heavy metals, pharmaceuticals and other xenobiotics) that may pose a potential threat to terrestrial fauna, and consequently to humans. Toxic potential of liquid active sludge and semi‐sold depot sludge (active sludge redeposited on a nearby land location) was evaluated by earthworm histopathological analysis, changes in the multixenobiotic resistance activity and lipid peroxidation analysis after acute, semi‐ acute and sub‐chronic exposure period. Applied biomarkers demonstrated extensive alterations at the cellular and tissue levels, proving that sewage sludge can pose a serious risk for soil organisms

soil toxicology ; earthworm ; multixenobiotic resistance mechanism ; histology ; lipid peroxidation

nije evidentirano