پديد آورندگان :
Oshode O. A. نويسنده , Bakare A. A. نويسنده , Adeogun A. 0. نويسنده , Efuntoye M. 0. نويسنده , Sowunmi A. A. نويسنده
چكيده لاتين :
Among the environmental problems in Nigeria is the lack ofproper management of
municipal solid wastes (MSW), which is capable ofreleasing hazardous chemicals via leachate to
the surrounding environment. In this study, the potential toxic effects ofraw leachate obtained from
Aba-Eku landfill (AERL) on Clarias gariepinus; and the microorganisms that may be present in the
leachate were investigated. Physico-chemical analysis showed that the leachate contained toxic
constituents. The 96 h LCsoobtained was 36.6%. Haematocrit %, erythrocyte number, haemoglobin
concentration, leukocyte and lymphocyte number increased with increasing leachate concentration.
Histopathological lesions were marked in the gills, kidney and liver of exposed fishes and were
concentration dependent. Atotal of 112 bacterial isolates belonging to 17 genera were recorded from
samples ofAERL. Potential pathogens and toxin producing microorganism were identified. These
observations are of prime health concern because there is no known containment or treatment
system for the leachate generated from the study site. Our findings would be of assistance in the
assessment of hazardous effects of chemicals from waste landfills discharged into the aquatic
environment and in making policy on environmental waste management.
