Abstract This study evaluates the potential of local fish waste oil as a feedstock for biodiesel via supercritical methanol transesterification (SCMT). Hexane was used cosolvent and reaction carried out in continuous reactor under conditions. The response surface methodology (RSM) method applied to analyse effect four independent variables, including weight ratio fish-waste (W), temperature (T)...

This work focuses on the supercritical region of fluid phase equilibria, just above critical point. It is already known that in this area, two different zones can be distinguished, one where fluids (SCFs) have liquid-like properties, and other SCFs gas-like properties; these being delimited by Widom extrema lines. draws attention to lines, indicating they may serve guide choice process operatin...

This paper studied the effect of pyridinium-based ionic liquids as cosolvents in a methanol-water solvent system on hydrolytic activity Candida rugosa lipase. These were successfully synthesized using imidazolium-based liquid synthesizing methods with certain adjustment. The lipase was analyzed 4-nitrophenol acetate (pNPA) and palmitate (pNPP) substrates. addition had no significant water solve...