AUTHOR=Shao Lu TITLE=Corrigendum: Grand Challenges in Emerging Separation Technologies JOURNAL=Frontiers in Environmental Chemistry VOLUME=1 YEAR=2021 URL=https://www.frontiersin.org/journals/environmental-chemistry/articles/10.3389/fenvc.2020.602426 DOI=10.3389/fenvc.2020.602426 ISSN=2673-4486