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SILICA-IMMOBILIZED Methylobacterium sp. NP3 AND Acinetobacter sp. PK1 DEGRADE HIGH CONCENTRATIONS OF PHENOL.
MedLine Citation:
PMID:  21291480     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Aims:  To immobilize Methylobacterium sp. NP3 and Acinetobacter sp. PK1 to silica and determine the ability of the immobilized bacteria to degrade high concentrations of phenol. Methods and Results:  The phenol degradation activity of suspended and immobilized Methylobacterium sp. NP3 and Acinetobacter sp. PK1 bacteria was investigated in batch experiments with various concentrations of phenol. The bacterial cells were immobilized by attachment to or encapsulation in silica. The encapsulated bacteria had the highest phenol degradation rate, especially at initial phenol concentrations between 7,500 - 10,000 mg l(-1) . Additionally, the immobilized cells could continuously degrade phenol for up to 55 d. Conclusions:  The encapsulation of a mixed culture of Methylobacterium sp. NP3 and Acinetobacter sp. PK1 is an effective and easy technique that can be used to improve bacterial stability and phenol degradation. Significance and Impact of the Study:  Wastewater from various industries contains high concentrations of phenol, which can cause wastewater treatment failure. Silica-immobilized bacteria could be applied in bioreactors to initially remove the phenol, thereby preventing phenol shock loads to the wastewater treatment system.
Authors:
Piyamart Khongkhaem; Amarawan Intasiri; Ekawan Luepromchai
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-2-3
Journal Detail:
Title:  Letters in applied microbiology     Volume:  -     ISSN:  1472-765X     ISO Abbreviation:  -     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-2-4     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8510094     Medline TA:  Lett Appl Microbiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 The Society for Applied Microbiology.
Affiliation:
Department of Microbiology, Faculty of Science, Chulalongkorn University Department of Chemistry, Faculty of Science, Chulalongkorn University National Center of Excellence for Environmental and Hazardous Waste Management (NCE-EHWM), Chulalongkorn University.
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