In a packed-bed reactor, wastewater flows through a stationary mass of catalyst particles rather than through a stirred liquid containing suspended material. Electrochemical regeneration does introduce its own engineering challenges. Subject of Research: In-situ electrochemical regeneration of deactivated catalysts for long-lived wastewater purification in packed-bed reactorsArticle Title: Overcoming catalyst deactivation with in-situ electrochemical regeneration in packed-bed reactors enabling long-lived wastewater purificationArticle References: Huang, JJ., Duan, PJ., Bai, CW. “Overcoming catalyst deactivation with in-situ electrochemical regeneration in packed-bed reactors enabling long-lived wastewater purification.” https://doi.org/10.1038/s41467-026-76638-6Image Credits: AI GeneratedDOI: 10.1038/s41467-026-76638-6Keywords: wastewater purification, catalyst deactivation, electrochemical regeneration, packed-bed reactors, catalytic oxidation, advanced water treatment, environmental engineering