Studies on Municipal Solid Wastes Dumping on Soil Anions, Cations and Selected Enzymes Activities at Njoku Sawmill Waste Dumpsite, Owerri Municipal, Imo State, Nigeria

  • GC Chineyre
  • ES Obisike
  • AE Ugbogu
  • KU Osuocha


In this study, the physicochemical parameters, anions, exchangeable cations, tracemetals concentrations and selected soil enzymes activities of Njoku solid waste dumpsite Owerri municipal, Nigeria were investigated. Soil temperature (28.8 ± 0.04 – 33.9±0.01oC), pH of the heavily polluted points (7.3 ± 0.01 – 7.4±0.03) moisture content (26.74±0.10) were significantly higher (P< 0.05) compared to control soil samples. Similarly dumpsite soil nitrate level, percentage organic carbon, organic matter, sulphate and phosphate ions were significantly (P<0.05) increased with increased waste dumping. All the exchangeable cations and trace metals concentrations investigated were higher (P<0.05) than control levels. However, while the dumpsite soil alkaline phosphatase enzyme activity remained unaffected by waste dumping (p>0.05), acid phosphatase, dehydrogenase, lipase, hydrogen peroxidase and urease enzymes activities were enhanced (p<0.05) at the heavily polluted points of the dumpsite compared to control samples. Although the dumping of solid wastes increased the soil nutrients, most were made unavailable to plants and microorganisms.

Keywords: Solid wastes, soil, anions, cations enzymes activities


Journal Identifiers

eISSN: 1998-0507