Journal
BIOTECHNOLOGY LETTERS
Volume 22, Issue 13, Pages 1093-1096Publisher
KLUWER ACADEMIC PUBL
DOI: 10.1023/A:1005650612768
Keywords
2,4-dichlorophenol; activated carbon; phenol
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The role of mixed microorganisms on the bioregeneration of granular activated carbon (GAC) loaded with a mixture of phenol and 2,4-dichlorophenol was investigated. In a biological activated-carbon, sequencing batch reactor (BAC-SBR), bioregeneration efficiency for phenol was enhanced from 39 to 48% and for 2,4-dichlorophenol from 38 to 43% by increasing solid retention time from 3 to 8 days. Prolonging the sludge retention time induced both progressive desorption of adsorbates due to biodegradation in the bulk solution and direct assimilation of adsorbates on GAC by attached microorganisms.
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