| Abstract |
| Most perchlorate reducing bacteria can use many organic compounds as electron donors under anoxic condition. 2,4-dinitrophenol(DNP), considered as highly toxic and potentially carcinogenic compounds, is released to environment from the industrial sources, such as dye, explosive, and pesticides. A number of bacterial strains have been reported which can use DNP as their sole carbon and nitrogen source. This research was done to evaluate whether 2,4-DNP as a carbon source can be used to reduce perchlorate in an anoxic biofilm reactor. When 25mg/L of 2,4-DNP was added with 110.6mg/L of acetate as sufficient carbon source, 10mg/L of perchlorate was almost completely removed, but the removal rate of 2,4-DNP was 9.6~13.6%. When 2,4-DNP was added as the sole carbon source, 2,4-DNP removal rate was increased to 48.2% but perchlorate removal rate was dramatically decreased to 14.7%. The results showed that the possibility of application of 2,4-DNP as a sole carbon source was low in a biofilm reactor for perchlorate reduction. |
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| Key Words |
| 2, 4-DNP, perchlorate, biofilm reactor, carbon source, anoxic condition, biodegradation |
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