| Abstract |
| Nitrophenois, used as intermediates in the production of dyes, explosives, and pesticides, are considered important water contaminants that are acutely toxic or carcinogen to humans. There are some reports about the anaerobic biodegradation of 2.4-DNP, However, There is little information about the biodegradation of 2, 4-DNP as a sole electron donor in an anoxic denitrification bioreactor, This research was carried out to investigate whether 2, 4-DNP can be used as a sole carbon source in the denitrification biofilm reactor under anoxic condition. When 26mg/L of 2, 4-DNP and 492mg/L of acetate were added, 443mg/L of nitrate was removed completely in the biofilm reactor. However, the average removal rate of 2, 4-DNP was 14%. Under acetate limitation condition, denitrification rate and 2, 4-DNP removal rate were dramatically decreased. After acetate influent was increased to sufficient concentration, denitrification rate was restored in the biofilm reactor. |
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| Key Words |
| 2, 4-DNP, denitrification, electron donor, biodegradation |
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