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Effect of microbial treatment on the prevention and removal of paraffin deposits on stainless steel surfaces.
MedLine Citation:
PMID:  22989649     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
In this study, biosurfactant-producing strain N2 and non-biosurfactant producing stain KB18 were used to investigate the effects of microbial treatment on the prevention and removal of paraffin deposits on stainless steel surfaces. Strain N2, with a biosurfactant production capacity, reduced the contact angle of stainless steel to 40.04°, and the corresponding adhesion work of aqueous phase was decreased by 26.5mJ/m(2). By contrast, KB18 could only reduce the contact angle to 50.83°, with a corresponding 7.6mJ/m(2) decrease in the aqueous phase work adhesion. The paraffin removal test showed that the paraffin removal efficiencies of strain N2 and KB18 were 79.0% and 61.2%, respectively. Interestingly, the N2 cells could attach on the surface of the oil droplets to inhibit droplets coalescence. These results indicate that biosurfactant-producing strains can alter the wettability of stainless steel and thus eliminate paraffin deposition.
Authors:
Meng Xiao; Wen-Hong Li; Mang Lu; Zhong-Zhi Zhang; Yi-Jing Luo; Wei Qiao; Shan-Shan Sun; Wei-Zhang Zhong; Min Zhang
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-25
Journal Detail:
Title:  Bioresource technology     Volume:  124C     ISSN:  1873-2976     ISO Abbreviation:  Bioresour. Technol.     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-9-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9889523     Medline TA:  Bioresour Technol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  227-232     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier Ltd. All rights reserved.
Affiliation:
State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, PR China.
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