CATEGORY: OILY SLUDGE
International Journal Of Environmental Sciences Volume
3, No 5, 2013, doi:10.6088/ijes.2013030500007
Treatment
of conditioned oily sludge from Cameroon petroleum refinery by centrifugation
Ze Bilo'o Philemon 1,2, Ngassoum Martin Benoît 1
zebiloop@yahoo.fr
1 Laboratory of Active Substances and Pollution (LASP), National School of
Agro-Industrial Sciences (ENSAI), University of Ngaoundere, P.O. Box 455
Ngaoundere (Cameroon)
2 Laboratory of Chemistry, Faculty of Science, University of Bamenda, P.O. Box:
39 Bambili (Cameroon).
Abstract
The
large quantity of oily sludge generated by the National Petroleum Refinery of
Cameroon represents a certain number of problems among which we have waste
treatment and disposal. The objectives of this survey were to carry out primary
tests on treatment of conditioned oily sludge by centrifugation and to identify
and quantify standard Polycyclic Aromatic Hydrocarbons (PAHs) that can be
recovered. In order to attain these objectives, centrifugation speed (a),
centrifugation time (b), centrifugation temperature (c) and flocculent
concentration (d) were measured. Best result of oil extraction was obtained at a
centrifugation speed of 1500 rpm, a centrifugation temperature of 60°C, a
centrifugation time of 30 min and flocculent concentration equal to 25 ppm.
The oily sludge was conditioned with NALCO Core Shell 71303. The
percentages of oil extraction show that oil is still in the emulsion phase.
This situation can be due to the fact that the optimum conditions of
centrifugation have not been achieved. The other reason is the adsorption of
heavy hydrocarbons on solid particles present in the oily sludge.
Free Full Text Source: http://www.ipublishing.co.in/ijesarticles/thirteen/articles/volthree/EIJES31138.pdf
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