Understanding heat and mass transfer processes during microwave-assisted and conventional solvent extraction

Solvent extraction is a mass transfer process. In this paper, we investigate the role of heat in solvent extraction: particular, how properties solid and heating method (conventional microwave heating) drive Water-based pectin from orange peel, apple pomace, mango peel carrot pulp was carried out. The thermal conductivity dielectric loss were shown as good predictors performance, with step change increases rates when processing applied to biomass significantly higher than water (e.g. 120 mins reduced 45 for optimal pomace). When factor lower there no difference performance between two technologies time 60 both cases). Further investigations out at different conventional order decouple effects volumetric selective heating. It that below certain power threshold (within range 100–120 W these experiments), are equivalent, while above threshold, microwaves achieved step-change time. These findings first experimental confirmation recent theoretical advances processing, which Temperature-Induced Diffusion drives transfer. also paper allow identification characteristics will be most amenable extraction.