Potato peel waste biorefinery for the sustainable production of biofuels, bioplastics, and biosorbents

• Published in: Bioresource technology 2022-09, Vol.360, p.127609-127609, Article 127609
• Main Authors: Ebrahimian, Farinaz, Denayer, Joeri F.M., Karimi, Keikhosro
• Format: Article
• Language: English
• Subjects: Biorefinery; Fermentation; Food waste; Pretreatment; Thermochemical processing
• ISSN: 0960-8524; 1873-2976
• DOI: 10.1016/j.biortech.2022.127609

[Display omitted] •State-of-the-art PPW valorization is comprehensively reviewed.•Bioconversion of PPW into ethanol, butanol, hydrogen, and biogas is discussed.•Thermochemical conversions of PPW are presented and thoroughly discussed.•The review covers the physical, chemical, and physicochemical pretreatment of PPW.•The review encompasses the key challenges associated with PPW-based biorefinery. Potato is the fourth most abundant crop harvested annually worldwide. Potato peel waste (PPW) is the main waste stream of potato-processing industries which is generated in large quantities and is a threat to the environment globally. However, owing to its compositional characteristics, availability, and zero cost, PPW is a renewable resource for the production of high-value bioproducts. Hence, this study provides a state-of-the-art overview of advancements in PPW valorization through biological and thermochemical conversions. PPW has a high potential for biofuel and biochemical generation through detoxification, pretreatment, hydrolysis, and fermentation. Moreover, many other valuable chemicals, including bio-oil, biochar, and biosorbents, can be produced via thermochemical conversions. However, several challenges are associated with the biological and thermochemical processing of PPW. The insights provided in this review pave the way toward a PPW-based biorefinery development, providing sustainable alternatives to fossil-based products and mitigating environmental concerns.