In situ coagulation-electrochemical oxidation of leachate concentrate: A key role of cathodes.

ABSTRACT: To efficiently remove organic and inorganic pollutants from leachate concentrate, an in situ coagulation-electrochemical oxidation (CO-EO) system was proposed using Ti/Ti₄O₇ anode and Al cathode, coupling the "super-Faradaic" dissolution of Al. The system was evaluated in terms of the removal efficiencies of organics, nutrients, and metals, and the underlying cathodic mechanisms were investigated compared with the Ti/RuO₂-IrO₂ and graphite cathode systems. After a 3-h treatment, the Al-cathode system removed 89.0% of COD and 36.3% of total nitrogen (TN). The TN removal was primarily ascribed to the oxidation of both ammonia and organic-N to N₂. In comparison, the Al-cathode system achieved 3-10-fold total phosphorus (TP) (62.6%)

SUBMITTER: Li H 

PROVIDER: S-EPMC10091031 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature