Integrative biohydrogen- and biomethane-producing bioprocesses for comprehensive production of biohythane

• Published in: Bioresource technology 2022-12, Vol.365, p.128145-128145, Article 128145
• Main Authors: Kim, Hoo Hugo, Saha, Shouvik, Hwang, Jae-Hoon, Hosen, Md. Aoulad, Ahn, Yong-Tae, Park, Young-Kwon, Khan, Moonis Ali, Jeon, Byong-Hun
• Format: Article
• Language: English
• Subjects: Anaerobic digestion; Biohythane; Hydrogen; Meta-omics; Methane
• ISSN: 0960-8524; 1873-2976
• DOI: 10.1016/j.biortech.2022.128145

[Display omitted] •Biohythane is a promising renewable fuel for the sustainable circular economy.•An integrative two-stage fermentative biohythane production from AD is advisable.•Meta-omics approaches will further elucidate related microbiomes and their dynamics.•Metabolic engineering with bioaugmentation will further advance biohythane research.•Downstream biohythane upgrading and waste CO2 treatment or valorization is required. The production of biohythane, a combination of energy-dense hydrogen and methane, from the anaerobic digestion of low-cost organic wastes has attracted attention as a potential candidate for the transition to a sustainable circular economy. Substantial research has been initiated to upscale the process engineering to establish a hythane-based economy by addressing major challenges associated with the process and product upgrading. This review provides an overview of the feasibility of biohythane production in various anaerobic digestion systems (single-stage, dual-stage) and possible technologies to upgrade biohythane to hydrogen-enriched renewable natural gas. The main goal of this review is to promote research in biohythane production technology by outlining critical needs, including meta-omics and metabolic engineering approaches for the advancements in biohythane production technology.