Document Detail


Aerobic degradation of nitrobenzene by immobilization of Rhodotorula mucilaginosa in polyurethane foam.
MedLine Citation:
PMID:  19303212     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Rhodotorula mucilaginosa Z1 capable of degrading nitrobenzene was immobilized in polyurethane foam. The nitrobenzene-degrading capacity of immobilized cells was compared to free cells in batches in shaken culture. Effects of pH and temperature on the nitrobenzene degradation showed that polyurethane-immobilized Z1 had higher tolerances toward acid, alkali, and heat than those of free cells. Kinetic studies revealed that higher concentrations of nitrobenzene were better tolerated and more quickly degraded by polyurethane-immobilized Z1 than by free cells. Moreover, the ability of polyurethane-immobilized Z1 to resist nitrobenzene shock load was enhanced. Experiments on the nitrobenzene degradation in different concentrations of NaCl and in the presence of phenol or aniline demonstrated that polyurethane-immobilized Z1 exhibited higher tolerance toward salinity and toxic chemicals than those of free cells. Immobilization therefore could be a promising method for treating nitrobenzene industrial wastewater. This is the first report on the degradation of nitrobenzene by a polyurethane-immobilized yeast strain.
Authors:
Chunli Zheng; Jiti Zhou; Jing Wang; Baocheng Qu; Jing Wang; Hong Lu; Hongxia Zhao
Publication Detail:
Type:  Evaluation Studies; Journal Article     Date:  2009-02-20
Journal Detail:
Title:  Journal of hazardous materials     Volume:  168     ISSN:  1873-3336     ISO Abbreviation:  J. Hazard. Mater.     Publication Date:  2009 Aug 
Date Detail:
Created Date:  2009-06-05     Completed Date:  2009-08-05     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9422688     Medline TA:  J Hazard Mater     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  298-303     Citation Subset:  IM    
Affiliation:
School of Environmental and Biological Science and Technology, Dalian University of Technology, Dalian, Liaoning Province, People's Republic of China.
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MeSH Terms
Descriptor/Qualifier:
Aerobiosis
Biodegradation, Environmental*
Hydrogen-Ion Concentration
Industrial Waste
Nitrobenzenes / metabolism*
Polyurethanes*
Rhodotorula / metabolism*
Temperature
Water Pollutants, Chemical / metabolism
Chemical
Reg. No./Substance:
0/Industrial Waste; 0/Nitrobenzenes; 0/Polyurethanes; 0/Water Pollutants, Chemical; 9009-54-5/polyurethane foam; 98-95-3/nitrobenzene

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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