Synthesis and characterization of a novel reticulated multi-branched fluorinated polyether demulsifier for w/o emulsion demulsification

Investigation of Dioctyl Sodium Sulfosuccinate in Demulsifying Crude Oil-in-Water Emulsions

“…As shown in Figure a, increasing DSS concentration to 900 mg/L increased the demulsification efficiency, and beyond this concentration, the improvement in demulsification efficiency was insignificant. It can be concluded that the critical micelle concentration (CMC) of DSS for O/W demulsification is 900 mg/L. , As listed in Table , increasing DSS concentration from 300 mg/L to 1300 mg/L reduced TEPH in separated water to <10 mg/L. This high demulsification efficiency of DSS may be because the double-chain structure facilitated the homogeneous distribution of DSS in the emulsion.…”

“…It can be concluded that the critical micelle concentration (CMC) of DSS for O/W demulsification is 900 mg/L. 50 , 51 As listed in Table 4 , increasing DSS concentration from 300 mg/L to 1300 mg/L reduced TEPH in separated water to <10 mg/L. This high demulsification efficiency of DSS may be because the double-chain structure facilitated the homogeneous distribution of DSS in the emulsion.…”

Fluorinated polyether-coated Fe3O4-functionalized oxidized carbon nanotubes as a recyclable demulsifier for crude oil emulsion treatment

“…In the FTIR spectrum of Fe 3 O 4 @F and Fe 3 O 4 @C–F, the stretching vibration absorption peaks of –CH and –CH 2 appeared at 2914 and 2825 cm −1 , respectively. The peak at 1242 cm −1 corresponded to the characteristic peak of C–O–C, 27 indicating the appearance of ether bonds. The stretching vibration peaks of F–C–F and C–F bonds existed at 1197 and 1206 cm −1 , indicating that the fluorinated polyether was successfully synthesized on the surface of Fe 3 O 4 @C and good chemical encapsulation was achieved.…”

“…Based on these advantages, our team successfully introduced uorine into polyether demulsiers in the early stage, and then synthesized uorine-containing polyether demulsiers with uorine-containing phenol as the starting agent, in addition to ethylene oxide (EO) and propylene oxide (PO). [11][12][13] Although uoropolyether demulsiers can promote the demulsication effect, they can cause pollution and are not easy to recycle. In response to green and sustainable concepts, magnetic demul-siers have been developed.…”

Fluorinated-Polyether-Grafted Graphene-Oxide Magnetic Composite Material for Oil–Water Separation

“…This paper focuses on optimizing the performance of a new fluorine-containing block polyether demulsifier synthesized by the team [34] by incorporating graphene oxide and iron oxide. In order to achieve this, a magnetic demulsifier with properties, such as being environmentally friendly, having a high demulsification rate, and recyclability, was synthesized by grafting fluorinated polyether onto graphene oxide and combining it with ferric oxide.…”