DESULPHURIZATION OF DIESEL USING ACTIVATED CARBON PRODUCED FROM COCONUT SHELL
The presence of sulphur in fuels produces SOx emissions after combustion. These emissions decrease
the air quality with negative impact on the environment and public health. Unfortunately, relatively
high levels of sulphur are present in both locally processed and imported diesel in Nigeria due to
the natural presence of sulphur in crude oil. Efforts to reduce this content during processing is quite
cost intensive. This necessitates the need for a cheaper but efficient method to reduce, if not totally
eliminate the sulphur in the processed fuel prior to its use. In this study, Coconut shells were
activated and used as adsorbents for sulphur removal from the fuel, via an adsorption process.
Results obtained with coconut shell were compared with using imported activated carbon. The
efficiency of both adsorbents were nearly at per. Adsorption isotherms were plotted and it was found
that the Linear isotherm best described the adsorption of sulphur using activated coconut shell –
with an R2 value of 0.7118 as against that 0.6457 of Langmiur isotherm and 0.663 of Freundlich
isotherms respectively. Using Coconut shell activated carbon will save our Nation some foreign
currency in the importation of activated carbon for desulphurization and similar uses.