Abstract:
Due to the little data available on the levels of trace metals concentration in sewage
sludge in and around Benghazi city, it was necessary to determine the current
concentration, composition, distribution and sources of trace metals in the sludge of
different wastewater treatment plants. Accordingly, raw sewage sludge samples
collected from sixteen wastewater-pumping stations at Benghazi city have
undergone evaluation of pH and some trace metals concentrations (mainly Zn, Cd,
Cu and Pb) in dried sludge using atomic absorption spectrophotometry. Their
monthly and spatial variations in sludge have been described.
