Abstract
Microbial lipopeptides have been proposed to adsorb at interface rapidly and have synergistic effect with synthetic surfactant, and we assumed that stable droplets of oil would generate and oil-in-water emulsion with good stability would be obtained using the mixture of microbial lipopeptides and synthetic surfactant in short time scale. Here, the interfacial properties of the mixture of microbial lipopeptide and petroleum sulphonates has been evaluated using the coalescence frequency of the micro-droplets of crude oil in surfactant solutions in flow state and within sub-second period based on a microfluidic method. Results showed that partial substitution of petroleum sulphonates by lipopeptide enhanced the stability of micro-droplets of crude oil in surfactant solutions. To form stable micro-droplets of crude oil, less lipopeptide/petroleum sulphonates mixture (m:m=1:1) was needed than petroleum sulphonates. Moreover, higher salt tolerance, less demand of alkali, and shorter adsorption time were obtained for lipopeptide/petroleum sulphonates mixture to form stable emulsion comparing with that of individual petroleum sulphonates mixture. The present study provide novel information of lipopeptide/petroleum sulphonates mixture in generating stable crude oil-in-water emulsion at flow state.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: Colloids and Surfaces A: Physicochemical and Engineering Aspects
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.