Quality Assessment of Vegetable Oil Industry Effluents in Port Harcourt, Rivers State, Nigeria

Verla, Andrew Wirnkor; Verla, E.N.; Adowei, P.; Briggs, A.; Horsfall, M.

doi:10.18052/www.scipress.com/ILCPA.33.179

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Quality Assessment of Vegetable Oil Industry Effluents in Port Harcourt, Rivers State, Nigeria

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Abstract:

Five composite samples of waste water were collected from waste water tank of a vegetable oil refining company and were analyzed for physiochemical characteristics, heavy metal and organic pollutants. Physicochemical determinations were done according to standard methods; heavy metals were determined by use of Atomic Absorption Spectrophotometer method while organic pollutants were determined by Gas chromatography system HP 6890 series. Sulphate was determined by vanadomolybdophosphoric acid method while phosphates and chlorides were determined by argentometric method. Results reveal that effluent pH (4.67 ±0.015), salinity (125 ±4.50 %) and BOD₅ (17.83 ±1.70 mg/l) were bellow WHO standard whereas TDS (127.7 ±5.77 mg/l), TSS (563.6 ±3.15 mg/l) and COD (3959 ±3.8 mg/l) were above WHO standards. Heavy metal pollution index (0.31) showed no multi-element contamination arising from effluent. The degree of contamination (1.84) showed that the effluent has a moderate polluting potential. Lower molecular weight PAHs showed a significant difference even though most of the organic compounds in vegetable oil refinery wastewater showed good biodegradability that varied weekly. Therefore there is either no treatment or an in effective treatment of the effluents. This could result to serious environmental problems in the near future.

Info:

Periodical:

International Letters of Chemistry, Physics and Astronomy (Volume 33)

Pages:

179-189

DOI:

https://doi.org/10.18052/www.scipress.com/ILCPA.33.179

Citation:

A. W. Verla et al., "Quality Assessment of Vegetable Oil Industry Effluents in Port Harcourt, Rivers State, Nigeria", International Letters of Chemistry, Physics and Astronomy, Vol. 33, pp. 179-189, 2014

Online since:

May 2014

Authors:

Andrew Wirnkor Verla, E.N. Verla, P. Adowei, A. Briggs, M. Horsfall

Keywords:

Biodegradability, Indices, Physicochemical, Pollutants, Wastewater

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Creative Commons Attribution 4.0 International License

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[1] N. Noukeu, I. Gouado, R. Priso, D. Ndongo, V. Taffouo, S. Dibong, G. Ekodeck, "Characterization of effluent from food processing industries and stillage treatment trial with Eichhornia crassipes (Mart.) and Panicum maximum (Jacq.)", Water Resources and Industry, Vol. 16, p. 1, 2016

DOI: https://doi.org/10.1016/j.wri.2016.07.001