4. Results
4.1. Physico-Chemical Characteristics
The physical and chemical characteristics of the e-waste leachate used in this study are shown in
Table 1. The values obtained for tap water compared well with the suggested and maximum allowable
levels for drinking water by the federal environmental protection agency [13,17,18]. The values obtained
for e-waste leachate samples were much higher for most of the parameters compared to standard
guidelines and maximum permissible limits for industrial discharge into inland waters
by [17]. The concentrations of toxic metals such as Cd, Cr, and Pb in e-waste leachate were 0.56, 0.31,
and 1.35 mg/L, respectively, and these values are well above the stipulated maximum limits by [17].
The leachate was turbid with an offensive odour and slightly acidic with pH value of 6.17.