Abstract
Possible effects of the treatment of diesel oil with various concentrations of an inorganic salt, Potassium Aluminium Sulphate (KAl(SO<SUB>4</SUB>)<SUB>2</SUB>) were studied at room temperature, with a view to assessing alterations in the total petroleum hydrocarbon of diesel oil. Results obtained revealed that various concentrations of the inorganic salt had different effects on the total petroleum hydrocarbon (TPH) of the samples. The sample treated with 55g of the salt had the lowest TPH concentration of 2255.75mg/l while the sample treated with 35g of the salt had the highest TPH concentration of 12505.10mg/l. Two samples had higher TPH concentration than the untreated sample while five samples had lower TPH concentrations. This may be ascribed to the fact that some concentrations of the salt were able to catalytically crack heavier hydrocarbon molecules in the diesel oil to fractions lower than C6 (which may have been gases) thus leading to a decrease in the TPH concentration of those sample, while other concentrations of the salt were able to breakdown heavier hydrocarbon molecules to fractions within the C6 to C40 range thus leading to an increase in the TPH concentrations of the samples. The treatment also led to decrease and increase in the density of the samples.
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