From an energy perspective, the VHG technology can be justified the juice of sweet sorghum requires concentration, for example to prevent deterioration during storage and space saving. Also, it can be used when the sugar content in the raw juice is high and there is no need of juice concentration to work under VHG conditions. other systems for ethanol recovery could also be evaluated instead of distillation to reduce the energy consumption of the process, although Sanchez and Cardona (26) found that the best technological configuration option for ethanol production from sugarcane was distillation and rectification for ethanol concentration and adsorption with molecular sieves as the dehydration method.