Stacked multi-electrode design of microbial electrolysis cells for rapid and low-sludge treatment of municipal wastewater.

ABSTRACT:

Background

Microbial electrolysis cells (MECs) can be used for energy recovery and sludge reduction in wastewater treatment. Electric current density, which represents the rate of wastewater treatment and H₂ production, is not sufficiently high for practical applications of MECs with real wastewater. Here, a sandwiched electrode-stack design was proposed and examined in a continuous-flow MEC system for more than 100 days to demonstrate enhanced electric current generation with a large number of electrode pairs.

Results

The current density was boosted up to 190 A/m³ or 1.4 A/m² with 10 electrode pairs stacked in an MEC fed with primary clarifier effluent from a municipal wastewater treatment plant. High organic loading rate (OLR) resulted in h

SUBMITTER: Guo H 

PROVIDER: S-EPMC6367776 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature