Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
36675 | Process Biochemistry | 2005 | 6 Pages |
Abstract
Nitrate reduction using an electrode as a direct electron donor in a biofilm-electrode reactor was investigated to treat an aqueous solution containing high concentrations of nitrate. In the absence of organic substances, nitrate was reduced by micro-organisms consuming electrons from the electrode. The maximum nitrate reduction rate was 98% at an applied current of 200 mA. As nitrate concentrations decreased, the oxidation–reduction potential (ORP) gradually decreased from −80 to −260 mA. The maximum volumetric nitrate removal rate obtained from the biofilm-electrode reactor was 0.17 mg NO3−-N/(cm2 (biofilm surface area) day).
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Bioengineering
Authors
Ho Il Park, Dong kun Kim, Yong-Jin Choi, Daewon Pak,