Application of α-Amylase as a Novel Biodemulsifier for Destabilizing Amphiphilic Polymer-Flooding Produced Liquid Treatment
The performance and de-emulsification mechanism of α-amylase, a novel environmental friendly biodemulsifier in petroleum industry, was investigated at room temperature. The effects of α-amylase on the viscosity of amphiphilic polymer solution and de-emulsification rate were studied by changing the concentration of α-amylase, temperature and salinity. Polymer molecular weight, Zeta potential, interfacial film strength and interfacial tension were measured to investigate the de-emulsification mechanism of α-amylase. The results show that α-amylase is an efficient biodemulsifier to increase the de-emulsification rate of amphiphilic polymer emulsions. Hydrolysis of α-amylase to amphiphilic polymers destroys the structure of the amphiphilic polymer, thereby reduces the viscosity and the interfacial film strength of the system. Once de-emulsification is completed, the lower layer, i.e. the emulsified layer, will be clear. Thus, α-amylase can be applied as an effective de-emulsifier for amphiphilic polymer-stabilized O/W emulsion.
J. Jiang et al., "Application of α-Amylase as a Novel Biodemulsifier for Destabilizing Amphiphilic Polymer-Flooding Produced Liquid Treatment," Bioresource Technology, vol. 259, pp. 349-356, Elsevier Ltd, Jul 2018.
The definitive version is available at https://doi.org/10.1016/j.biortech.2018.03.069
Geosciences and Geological and Petroleum Engineering
Keywords and Phrases
Amphiphilic polymer flooding; Biodemulsifier; Oil in water emulsion; Î±-Amylase
International Standard Serial Number (ISSN)
Article - Journal
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