Assessing the quality of sewage sludge: CASE study of the Kumasi wastewater treatment plant.

Heliyon · 2023 · PMC10558785 · PMID 37809887

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a decreasing trendno p-value reported

[ 52 ] reported that Cf shows a decreasing trend of Cd > Ni > Zn > Pb > Cu with sludge sample varying from moderately polluted to severely polluted. 10 Pollution index (PI) The overall PI in the sludge for As, Cd, Cr, Cu, Ni, Pb, and Zn was 0.02, indicating the samples are free from contamination.

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