Caetano et al. (2012) studied the effect of different solvents on coffee oil yield using a Soxhlet extractor for 2.5¨C9.5 h. Their results showed that 21.5 wt% of oil was obtained after 3 h extraction time with a mixed solvent (hexane:isopropanol, 50:50 by volume), while the use of isopropanol solvent alone resulted in 21.0 wt% of oil within 6.8 h.
How does a sunflower extractor recover the solvent pumped to the extractor?
The solvent evaporated from the sunflower meal and the miscella are both recovered in the solvent recovery system within the solvent extraction process area. A typical sunflower plant will recover 99.8¨C99.9% of the solvent pumped to the extractor.
What is a prepress solvent extraction method in a sunflower crushing plant?
In a typical sunflower crushing plant using the prepress solvent extraction method, the initial steps of seed pre-cleaning and seed drying are located in the seed receiving section of the facility, prior to seed storage.
Can a microwave extract oil from spent coffee grounds?
The production of energy and chemicals from waste biomass is an attractive alternative by comparison with first-generation biofuels and fossil feedstocks. This paper investigates oil extraction from spent coffee grounds (SCG) by means of an advanced microwave process and compares this with a conventional Soxhlet extraction (SE) method.
