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Abstract

Untreated (or partially treated) effluents are capable of polluting a receiving water body. An environmental audit of the Benin river adjacent to a lubricating oil producing factory was carried out. Dry and rainy seasons effluent and water samples were collected for two years (water samples from seven sampling stations i.e. two upstream and five downstream). Physicochemical variables (including oil variables) were analyzed by standard methods and toxic metals by flame atomic absorption spectrometry. Important results include Oil and Grease (2270±480 µgl-1), total petroleum hydrocarbon (2010±340 µgl-1), Pb (146±55 µgl-1), Ni (1880±630 µgl-1) and pH (6.02±0.09). Some of these variables and metals exceeded guidelines values for drinking water quality. Water is polluted and needs to be rigorously treated before use for drinking purpose.

Keywords

Benin river lubricating oil producing factory physico chemical variables toxic metals, oil and grease total petroleum hydrocarbon drinking water quality flame atomic absorption spectrometry

Article Details

How to Cite
Akporido, S. O. . (2013). Quality characteristics of effluent receiving waters of Benin River adjacent to a lubricating oil producing factory, Nigeria. Environment Conservation Journal, 14(1&2), 9–20. https://doi.org/10.36953/ECJ.2013.141202

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