CONCENTRATIONS OF HEAVY METAL AND PHYSICOCHEMICAL CHANGES OF SPENT ENGINE OIL TREATED SOIL WITH POULTRY MANURE AFTER Sida acuta BURM.F. GROWTH
IFEDIORA, N. H., OTI, V. O. AND IGBOKWE, C. M.
ABSTRACT
Concentrations of heavy metal and physicochemical changes of spent engine oil treated soil and poultry manure after sida acuta growth was the aim of the study. 400 g poultry manure and 3600 g of the soil was measured into a sack bag. Then, spent engine oil was added to at different concentrations: control (0 mL), 1 % (40 mL), 3 % (120 mL) and 5 % (220 mL) v/w oil-in-soil and permitted to stand for seven days in the sack bags before transplanting. The soil after 12 weeks was collected and subjected to physical, chemical and heavy metal analysis. The results gotten showed that the heavy metal content of the spent engine oil, clay and sand of the treated soil, organic carbon, organic matter, exchangeable…