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| Characteristics and biodegradation of aniline by aerobic granular sludge |
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Abstract Mixed microorganisms which can degrade aniline efficiently were cultured and acclimated from aerobic activated sludge of a wastewater treatment plant being used to treat aniline and nitrobenzene wastewater. In the process of acclimation, mixed microorganisms transformed into granular sludge gradually, which was used later to degrade aniline. The mixed microorganisms would degrade aniline efficiently under the optimum conditions as follows: temperature was 28℃, pH was 7.0, and aniline was the sole carbon and nitrogen source. When the initial concentration of aniline was 600mg/L, it could be degraded completely in 18h at the optimum conditions just mentioned, and the degrading velocity of aniline by mixed microorganisms reached as high as 33.6mg/(L·h).
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Received: 18 September 2009
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