Development of olive stone quality system based on biofuel energetic parameters study

Kinetics of extraction and in situ transesterification of oils from spent coffee grounds

“…Further, equation 7 was used to obtain the activation energy. 12 Another equation based on the empirical model proposed by Peleg for the sorption processes in foods was used to fit the experimental data:…”

“…As the biggest manufacturer in Europe, the food sector is increasingly focused on processing food waste in order to garner extra income and reduce waste and associated landfill [10]. Consequently, the potential of other non-agricultural waste products 4 have been explored, including used cooking oil, organic municipal waste and olive stones [11][12][13].…”

Development of a new model of olives de-stoner machine: Evaluation of electric consumption and kernel characterization

“…However, the high oil mass fraction of approximately 5.0% [12e14] and the high amount of fine particle size cause problems in the combustion process within a conventional combustor system such as generating uncontrolled combustions and emissions [15,16] that result in the emissions of fumes and bad smells and the clogging of exchangers and chimneys. In addition, the oleaginous characteristics of the husks prevent the pelletizing process.…”

Energetic and economic viability of olive stone recovery as a renewable energy source: a Southern Italy case study

“…The thermal energy potentially available from the combustion of OS has been estimated assuming a lower heating value (LHV) of 19.2 MJ kg -1 OS dry basis, according to Mata-Sánchez et al (2014). All the energy computations were referred to the OS dry weigh, based on the average OS moisture content determined during the trials.…”

“…MataSánchez et al (2014), where the limit value of the third quartile of 176 OS samples from Spanish mills was 20.83%, with a strong variability spanning from 5.80 (minimum) to 33.20% (maximum). However, before it is sold as a fuel, the product usually undergoes pre-treatments such as cleaning or drying processes to allow reducing the moisture content to about 10-12% (Mata-Sánchez et al, 2014). Figure 1 gives an example of the instantaneous absorbed electrical power during the destoner operation, monitored in one out of the three trials belonging to the first test.…”