부산대학교 도서관

The purpose of this research was to evaluate the biodegradation of lindane with simultaneous electricity generation in an electrobiochemical slurry reactor (EBCR). The EBCR was inoculated with a sulfate reducing inoculum acclimated to lindane, further characterized, and batch operated for 30 day at room temperature. No external carbon source and supplementation with a stock solution of sucrose: sodium acetate: lactate was performed in experiments with soil concentrations 66% and 33%, respectively. Electrochemical impedance characterization of the EBCR (concentration of soil was 66%) showed that the equivalent circuit had a high anodic resistance R1=2064Ω, cathodic resistance R3 = 192 Ω, and electrolyte/membrane resistance R2 = 7Ω, totaling a high overall internal resistance Rint of 2263 Ù. During the batch operation, the EBCR showed a 30% lindane removal efficiency along with a maximum volumetric power of 165 mW m-3. The organic matter removal was very high (72% as soluble COD, NOM) whereas the coulombic efficiency was low (5.4%). In the experiment where the concentration of soil was 66% both cell characteristics and performance significantly improved. The internal resistance as determined by polarization curve was 102 Ω when the two-electrode sets were connected in parallel. During the batch operation, the EBCR showed a 78% lindane removal, a maximum power of 634 mW m-3, the organic matter removal was 76%, and coulombic efficiency of 15%. Therefore, it can be concluded that the EBCR exhibited a high lindane removal capability and holds promise for bioremediation of soils with the bonus of electricity generation. [ABSTRACT FROM AUTHOR]