Degrading high-strength phenol using aerobic granular sludge |
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Authors: | Kuo-Ling Ho Yu-You Chen Bin Lin Duu-Jong Lee |
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Institution: | (1) Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan, 10617; |
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Abstract: | Aerobic granules were adopted to degrade high-strength phenol wastewater in batch experiments. The acclimated granules effectively
degraded phenol at a concentration of up to 5,000 mg l−1 without severe inhibitory effects. The biodegradation of phenol by activated sludge was inhibited at phenol concentrations
>3,000 mg l−1. The granules were composed of cells embedded in a compact extracellular matrix. After acid or alkaline pretreatment, the
granules continued to degrade phenol at an acceptable rate. The polymerase chain reaction-denaturing gradient gel electrophoresis
technique was employed to monitor the microbial communities of the activated sludge and the aerobic granules following their
being used to treat high concentrations of phenol in batch tests. |
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Keywords: | |
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