Milan Tomić

TL;DR: In this paper, a series of experiments with transesterification of rapeseed oil in supercritical methanol and supercritical ethanol was carried out in a batch reactor at various reaction temperatures (250-350°C), working pressure (8-12 MPa), reaction time (7, 15 and 30 min), and at a constant 42:1 alcohol to oil molar ratio.

TL;DR: In this paper, the use of biodiesel as an additive for improving the lubrication properties of diesel fuel has been investigated, with the aim of eliminating the adverse effect of fuel.

TL;DR: In this article, the influence of physicochemical properties of a series of CaO catalysts activated at different temperatures on the biodiesel production was investigated, and significant relationship between structural properties (the type of the pore system, the typical CaO crystal phase and the sizes of crystallites (up to 25 nm), the minimal weight percentage of the CaO phase, the total surface basicity and the potential existence of two types of basic active sites) of the prepared CaO catalyst was found and initialized by means of thermal treatment at highest temperature and catalytic efficiency.

TL;DR: In this paper, an advanced two-step biodiesel production process, consisting of hydrolysis of oil to FFAs in subcritical water, and subsequent esterification of FFAs into FAME in supercritical methanol, was investigated.

TL;DR: In this article, two alternative processes for biodiesel production from used/waste cooking oil, the single-step supercritical transesterification and the two-step process consisting of oil hydrolysis and subsequent supercritical methyl esterification, were designed and simulated using the Aspen Plus 8.8 software and assessed from a techno-economic point of view.