Equilibrium steps for adsorption of nitrogen compounds : Examining the potential of silica application as adsorbent

Abstract The hydrotreating (HDT) process currently used to reduce the sulphur content in fuels requires high energy consumption and hydrogen. Furthermore, presence of nitrogen compounds makes them more severe. This work studies removal present a sample heavy diesel using commercial silica sample. Adsorption tests were performed stirring bath generate equilibrium data. Three test conditions at temperatures 40, 80 100 °C. In adsorption fixed bed, influence temperature liquid hourly space velocity (LHSV) was observed . regeneration adsorbent, achieved °C desorption 60 Ethanol as solvent fourteen thirteen performed. checked. From comparative perspective, adsorbent showed higher affinity than those related tests. recovery reduction approximately 20% capacity treated after cycle relation fresh adsorbent. result indicates that can be reused.