biostudies-literatureHe JChina Scholarship CouncilHelmholtz-Zentrum f?r UmweltforschungMinisterio de Ciencia e Innovaci?n18234-18243https://www.ebi.ac.uk/biostudies/studies/S-EPMC11483754biostudies-literatureUnknown58(41)Biofiltration is a simple and low-cost method for the cleanup of contaminated water. However, the reduced availability of dissolved chemicals to surface-attached degrader bacteria may limit its efficient use at certain hydraulic loadings. When a direct current (DC) electric field is applied to an immersed packed bed, it invokes electrokinetic processes, such as electroosmotic water flow (EOF). EOF is a surface-charge-induced plug-flow-shaped movement of pore fluids. It acts at a nanometer distance above surfaces and allows the change of microscale pressure-driven flow profiles and, hence, the availability of dissolved contaminants to microbial degraders. In laboratory percolation columns, we assessed the effects of a weak DC electric field (<i>E</i> = 0.5 V·cm^-1) on the biodegraEnvironmental science & technologyDC Electric Fields Promote Biodegradation of Waterborne Naphthalene in Biofilter Systems.PMC11483754BES-2017-079905PID2022-139732OB-C21Castilla-Alcantara JCHe JHarms HWick LYOrtega-Calvo JJfalseDC Electric Fields Promote Biodegradation of Waterborne Naphthalene in Biofilter Systems.Biofiltration is a simple and low-cost method for the cleanup of contaminated water. However, the reduced availability of dissolved chemicals to surface-attached degrader bacteria may limit its efficient use at certain hydraulic loadings. When a direct current (DC) electric field is applied to an immersed packed bed, it invokes electrokinetic processes, such as electroosmotic water flow (EOF). EOF is a surface-charge-induced plug-flow-shaped movement of pore fluids. It acts at a nanometer distance above surfaces and allows the change of microscale pressure-driven flow profiles and, hence, the availability of dissolved contaminants to microbial degraders. In laboratory percolation columns, we assessed the effects of a weak DC electric field (<i>E</i> = 0.5 V·cm^-1) on the biodegra2024-01-01T00:00:00Z2024 Oct2026-06-06T01:55:52.992Z2025-04-04T20:55:48.142ZS-EPMC114837543935310210.1021/acs.est.4c02924