Acrylamide and Acrylate Based Hydrogel for Water Adsorption in Biodiesel

Abstract Several countries have implemented the use of biodiesel as a diesel fuel blend. Indonesia currently implements highest percentage biodiesel, reaching 30% (B30), starting from 2020. Strict quality standards been worldwide, such ASTM D6751 (USA), EN 14214 (EU), JASO M360 (Japan), and SNI 7182:2015 (Indonesia). Prior to blending with diesel, must comply specification. One most concerning issues is water content in that easily increased due its hygroscopic nature. Currently, handling procedure at facility maintain immoderate still limited. Therefore, experiments for reducing excessive were conducted using polyacrylamide-co-potassium acrylate (pAAm-co-PA) potassium polyacrylate (PPA) hydrogels varying contact times. The adsorption capacity hydrogel best performance was also observed. Four methods carried out regeneration, i.e., drying atmospheric pressure (A), vacuum (V), combination solvent washing-atmospheric acetone (AA) ethanol (EA). results indicate PPA adsorps more than pAAm-co-PA same time. decreased 13.4% after being used seven cycles simultaneously. ethanol-drying produces recovery regeneration process, 39.24%.