TY - JOUR
TI - High pressure densities and derived properties of biodiesel fuel produced by heterogeneous transesterification from biowaste
AU - Miškov Sofija P
AU - Ivaniš Gorica R
AU - Radović Ivona R
AU - Kijevčanin Mirjana Lj
JN - Thermal Science
PY - 2019
VL - 23
IS - 15
SP - 1757
EP - 1768
PT - Article
AB - High pressure density of biodiesel is a crucial parameter necessary for the  diesel engine design and performance improvement as well as proper  combustion optimization. Biodiesel production utilizing biowaste as raw  material reduces the capital costs and environmental problems related to  biowaste disposal. In this investigation, biodiesel was synthesized in a  heterogeneous transesterification reaction utilizing used cooking oil and  methanol as reactants and eggshell raw material as a calcium-oxide catalyst  source. Calcination was carried out at temperature 1073.15 K for 4h and  transesterification was conducted at 338.15 K. Densities of produced  biodiesel were measured at pressures up to 60 MPa and over the temperature  range 288.15 - 413.15 K and fitted employing the modified Tammann-Tait  equation. Viscosities of biodiesel are also measured at atmospheric pressure  over the temperature range 288.15 - 338.15 K. From measured density data,  important mechanical properties, such as the isothermal compressibility and  the isobaric thermal expansivity, were calculated. High transesterification  reaction yield was obtained (almost 99 wt%) while densities and viscosities  of analyzed biodiesel sample were in accordance with recommended standard  values. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. 172063]