[01] Isaiah Olabisi Adelabu, Department of Chemistry, Federal University of Technology, Akure, Nigeria. [02] Oluwaseun Adekoya Adelaja, Department of Chemistry, Federal University of Technology, Akure, Nigeria.

Physico-chemical analysis, Heavy metals determination and improvised treatment processes were carried out on raw effluent collected from an Industrial area in Nigeria. The effluent was treated with a combination of three adsorbents (kaolin, sand and plant biomass) in the form of Adsorbent Y and Z. The Physico-chemical analysis of the raw effluent gave the following results: Total Solids (250 mg/1), Suspended Solids (30 mg/1), Dissolved Solids (220 mg/1), pH (6.75), Turbidity (0.02 NTU), Conductivity (326 µs/cm), Temperature (27°C), Biochemical Oxygen Demand (3.7 mg/l), Chemical Oxygen Demand (4.1 mg/l), Dissolved Oxygen (6.5 mg/l), Sulphate (200 mg/l), Nitrate (18 mg/l), Phosphate (215 mg/l), Chloride (21.87 mg/l), Acidity (31.4 mg/l CaCO₃), Alkalinity (185.2 mg/l CaCO₃), Hardness (45.5 mg/l CaCO₃). The heavy metals concentration are Iron (0.22 ppm), Cadmium (0.01 ppm), Manganese (0.03 ppm), Chromium (0.82 ppm), Copper (0.06 ppm), Nickel (0.05 ppm) and Zinc (0.35 ppm). The values of the treated effluents were considerable lower indicating a measure of treatment. The study showed a greater removal rate for some of the contaminants. Adsorbent-Y showed a relatively high adsorption capacity for many parameters in comparison with Adsorbent-Z. Hence, the prepared adsorbents are highly suitable for the removal of certain pollutants/contaminants in the treatment of wastewater discharged by Industries.

Biomass, Adsorbents, Adsorption, Heavy Metals, Environment

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