APPLICATION OF ZEOLITE 4A - METAKAOLIN MATRIX FOR THE REMOVAL OF SOME HEAVY METALS FROM CRUDE OIL TANK FARM WASTEWATER

📄 Project Abstract

Pollution of water, especially in communities close to crude oil deposits and refineries, has created worldwide concerns because of the associated heavy metals, inter-alia, released to the environment which have adverse effects on the environment - human and aquatic life. Despite all the efforts of the refineries to curtail this, the inorganic pollutants were not sufficiently catered for. Analysis of the pollution loading of wastewater samples collected from the dewatering tanks in the tank farm of Kaduna Refining and Petrochemicals Company (KRPC) and at the point of discharge to the receiving river indicated concentrations of 0.04 mg/l of Ni, 0.225 mg/l Pb, 0.022 mg/l Cd and 1.823 mg/l Mn as against 0.01 mg/l, 0.01 mg/l, 0.003 mg/l and 0.2 mg/l standards, respectively, set by the National Environmental standard Regulatory and Enforcement Agency (NESREA). There was a consideration to use commercial Zeolite 4A, deriving from its high pore volume and adsorptive sites, but in order to red...