AUTHOR=Xia Ao , Show Pau-Loke , Reungsang Alissara , Walmsley Timothy TITLE=Editorial: Innovative Technology and System Integration for Gaseous Biofuels Production JOURNAL=Frontiers in Energy Research VOLUME=9 YEAR=2021 URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2021.709001 DOI=10.3389/fenrg.2021.709001 ISSN=2296-598X