Abstract
The removal of water content present in fuels such as biodiesel and diesel is quite important to adequate the fuel to standards for commercialization and to avoid corrosion of storage tanks and injection equipment in diesel engines. In this study, hydrophilic hydrogels were employed to remove the water content in biodiesel and diesel fuel samples. The results showed that the hydrogels were capable of decreasing the free water content and also the soluble water content present in the samples. The highest decrease of total water content in samples of biodiesel was 53.3% wt and for diesel samples the reduction of water content was 32.0%, starting with samples that had 2160 ppm and 240 ppm of water, respectively. The highest decrease of total water content (free and soluble water) for diesel samples was 80.4% wt, from a diesel sample initially containing 348 ppm of total water content.
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