4.2.2. Bioethanol

Generally, bioethanol is produced from lignocellulosic biomass, but due to advancements in wastewater treatment technologies, it can also be produced from wastewater, and bio-electrolytic conversion is one of the innovative technologies in this direction [36]. A number of wastewater effluents (alone or with other wastes) had been utilized for ethanol production, i.e., OMW and olive pomace [16], apple pomace hydrolysate [68], etc.
