Affiliations: Department of Chemistry, Federal University of
Technology, Minna, Nigeria | 1Department of Chemistry, Ahmadu Bello University,
Zaria, Nigeria | 2National Research Institute for Chemical Technology,
Zaria, Nigeria. joeyisa@yahoo.com
Note: [] Corresponding Author
Abstract: Physical and chemical parameters monitored at eight locations in
Challawa Industrial Estate, Kano were analyzed. Principal component analysis
(PCA) was used to extract the factors associated with the tannery effluents
pollution variability and to obtain the spatial and temporal changes in the
effluent quality. Temperature, total solids, total dissolved solids, total
suspended solids, conductivity, chloride, sulphide, alkalinity, biochemical
oxygen demands and chemical oxygen demands were the main patterns extracted.
The spatial analysis isolated six sampling sites showing a possible point
source of pollution. Six of the properties (temperature, total dissolved
solids, total suspended solids, sulphide, biochemical oxygen demand and
chemical oxygen demand) exceed apparent standard limit for industrial effluent
discharge in Nigeria for most of the tanneries. Treatments of these effluents
are also recommended before discharge.
