Application of α-amylase as a novel biodemulsifier for destabilizing amphiphilic polymer-flooding produced liquid treatment. (July 2018)

• Record Type: Journal Article
• Authors: Jiang, Jiatong; Wu, Hairong; Lu, Yao; Ma, Tao; Li, Zhe; Xu, Derong; Kang, Wanli; Bai, Baojun
• Is Part Of: Bioresource technology. Volume 259(2018)
• Page Start: 349
• Page End: 356
• Publication Date: 2018-07
• Subjects: Biodemulsifier -- Amphiphilic polymer flooding -- α-Amylase -- Oil in water emulsion; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2018.03.069
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: A novel environmental friendly biodemulsifier α-amylase is proposed. α-Amylase is a highly efficient biodemulsifier at room temperature. The de-emulsification mechanism of α-amylase is explored by various methods. Abstract: 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.