A comparison between conventional Pseudomonas aeruginosa rhamnolipids and Escherichia coli transmembrane proteins for oil recovery enhancing

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Author list: Yela ACA, Martinez MAT, Pineros GAR, Lopez VC, Villamizar SH, Velez VLN, Abraham WR, Florez MJV, Barrios AFG
Publisher: Elsevier
Publication year: 2016
Volume number: 112
Start page: 59
End page: 65
Number of pages: 7
ISSN: 0964-8305
Languages: English-Great Britain (EN-GB)


Biosurfactants have emerged as a remarkable strategy for microbial enhanced oil recovery (MEOR) due to their amphipatic nature, superficial activity and low toxicity. On one hand, conventional biosurfactants for MEOR belong to the rhamnolipids group, which are surface-active compounds of glycolipid-type. On the other hand, transmembrane proteins have been studied in recent years and have shown good surface tension reduction potential. This work aimed to evaluate and compare the emulsification index (El), oil displacement ability (ODA) and additional oil recovery (AOR) percentages of rhamnolipids produced by a native isolate Pseudomonas aeruginosa strain Pa4 and OmpA produced by Escherichia coll. The results confirmed a high recovery potential for both of the biosurfactants with the best superficial activity for P. aeruginosa rhamnolipid mixture (EI of 95% and ODA of 59.94 cm(2)) and the highest recovery for OmpA, obtaining an AOR of 12%. (C) 2016 Published by Elsevier Ltd.


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Last updated on 2019-23-08 at 11:15