Njoku et al
Greener Journal of Physical Sciences Vol. 2 (4), pp. 117-119, October, 2012.
ISSN: 2276-7851 © 2011 Greener Journals
Manuscript Number: 10041282
Assessment of Selected Heavy Metals in Sewage Sludge Disposal Soils in Abakaliki, Southeastern Nigeria
1*Njoku C., 1Ngene P.N. and 2Nwogbaga A.C.
1Department of Soil Science and Environmental Management, Ebonyi State University, P.M.B. 053, Abakaliki
2Department of Crop Production and Landscape Management, Ebonyi State University, P.M.B, Abakaliki
*Corresponding Author’s Email: chimarco2001 @ yahoo.com
The objective of this study is to assess sewage sludge
disposal sites in Abakaliki Southeastern Nigeria for
agricultural utilization with respect to selected heavy
metals (Sn, Cu, Fe and Zn). Soil samples were collected at 0
-30 cm depth from A - Excreta disposal site, B – Urine
disposal site, C – Wastewater disposal site and D – Control
(Non-disposal site) and analysed for selected heavy metals (Sn,
Cu, Fe and Zn). The data collected was analyzed using
standard error of the mean. Results showed higher values of
heavy metals in sewage sludge disposal sites than
non-disposal site and all the heavy metals observed are
within the normal range in soils. Thus, the agricultural
utilization of sewage sludge is not limited by heavy metals
content of sewage sludge since the values of heavy metals
observed in this study are within the normal range in soils.
Key Words: Agriculture, dumpsite, heavy metal, sewage sludge, utilization.