Stability and photo demulsification of oil-in-seawater Pickering emulsion based on Fe induced amphiphilic alginate.
作者信息
Xiong Chuang, Cao Xinyu, Zhao Xinyu, Yang Shujuan, Huang Junhao, Feng Yuhong, Yu Gaobo, Li Jiacheng
机构信息
Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan Province, China.
Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan Province, China..
出版信息
Carbohydr Polym. 2022 Aug 1;289:119399. doi: 10.1016/j.carbpol.2022.119399. Epub 2022 Mar 23.
The oil/water separation of oil-in-seawater emulsion plays an important role in resource recovery and ecological environment restoration. In this work, oil-in-seawater Pickering emulsion in seawater with high salinity was stabilized by Fe ions and amphiphilic alginate (AM-Alg), subsequently destabilized by UV light for efficient oil/water separation. Initially, AM-Alg exhibited high viscoelasticity at the oil-water interface, which was confirmed by Quartz crystal microbalance. The addition of Fe caused the aggregation of AM-Alg at the oil-water interface and improved the formation of the three-dimensional interpenetrating network structure. When Fe was at 0.1 mol/dm, the oil-in-seawater Pickering emulsion had the best stability, and also the fastest demulsification speed under UV light. Moreover, the photochemical redox reaction rate and the conversion rate of Fe were the highest. This photo demulsification technology is expected to become a new method of dealing with marine oil spills.
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