Three-Dimensional Packed-Bed Electrochemical Reactor Design for Selective Selenite Reduction in Water.

ABSTRACT: Selenium (Se) contamination in flue-gas desulfurization (FGD) wastewater from coal-fired power plants poses significant environmental and regulatory challenges. Here, we developed and optimized a three-dimensional electrochemical reactor (3DER) with carbon-based particle electrodes (PEs) to remove Se-(IV). Compared with conventional two-dimensional systems, the 3DER provides an enlarged electrode surface area, enabling faster removal kinetics and higher resilience without regeneration. Reactor performance was systematically evaluated as a function of PE geometry, recirculation rate, cell potential, and anode-to-cathode (A:C) chamber ratio. The optimized configuration (A:C = 1:2, E _cell = -2.1 V, recirculation rate 3.3 mL min^-1) balanced cathodic efficiency whil

SUBMITTER: Yang Z 

PROVIDER: S-EPMC12797224 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature