Abstract
The National Petroleum Refinery of Cameroon is a crude oil refining company that generates large quantity of oily sludge. The extraction, identification and quantification of aliphatic hydrocarbons that can be recovered from oily sludge were assessed. The extraction was conducted following an experimental design and the distribution of the aliphatic hydrocarbons of the sludge was realized by using a simple gas chromatographic method. The extraction results showed that all the factors have positive effect on the extraction. It was also found that the highest concentration of 127992 ppm was obtained under experimental conditions of Ratio = 6:1, Temperature = 40°C, Contact time = 90 min.
Highlights
The oily sludge is made up of considerable quantities of solid particles, water and hydrocarbons [1,2,3] and of poisonous, carcinogenic or mutagenic compounds [3,4,5,6]
The composition of hydrocarbon fraction of oily sludge varies from one refinery to another, and from one oily sludge to another depending on the type of refined crude oil
Previous analysis made on oily sludge of the National Petroleum Refinery of Cameroon [7,8] showed the high content of aliphatic hydrocarbons with high molecular weight
Summary
The oily sludge is made up of considerable quantities of solid particles, water and hydrocarbons [1,2,3] and of poisonous, carcinogenic or mutagenic compounds [3,4,5,6]. Previous analysis made on oily sludge of the National Petroleum Refinery of Cameroon [7,8] showed the high content of aliphatic hydrocarbons with high molecular weight. These aliphatic hydrocarbons are called paraffins in the petroleum vocabulary and are hydrocarbons having the formula CnH2n+2 (e.g., methane, CH4; ethane, C2H6). Heavier paraffin hydrocarbons (i.e., C18H38) form a wax-like substance that is called paraffin. These heavier paraffins often accumulate on the walls of tubing and other production equipment, restricting or stopping the flow of the desirable lighter paraffins [9]. The objectives of this work were to study the effect of some parameters on the paraffinic hydrocarbons extraction from oily sludge using a fraction of commercialized kerosene and to identify and quantify the various compounds that can be extracted from the oily sludge
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