scholarly journals Removal and Recovery of Nonionic Surfactants by Soil-Filling Suction Filtration^|^minus;Effects of Anionic Surfactants, Organic Builders, and Inorganic Builders^|^minus;

2014 ◽  
Vol 37 (1) ◽  
pp. 1-7
Author(s):  
Yoko SHINOHARA
Keyword(s):  
Nonionic Surfactants ◽  
Anionic Surfactants ◽  
Removal And Recovery

Oil Removing of Waste Silk by a Process of Combining Bacteria with Surfactants

2008 ◽  
Vol 12 (1) ◽  
pp. 47-52
Author(s):  
Yang Xuexia ◽  
Lao Jihong ◽  
Chen Hui
Keyword(s):  
Oil Content ◽  
Nonionic Surfactants ◽  
Anionic Surfactants ◽  
Inoculum Size ◽  
Scanning Electron Micrographs ◽  
Microbial Oil ◽  
Clean Surface ◽  
Optimum Conditions ◽  
Growth Of Bacteria ◽  
Scanning Electron

The removing of oil from waste silk is carried out widely by microbial fermentation. However, it is difficult to remove the oil completely. In this study, surfactants were used to enhance microbial oil removing. In seven of the surfactants that were tested, 0.1% of the anionic surfactants inhibited the growth of bacteria and 0.1% of the nonionic surfactants partially inhibited the growth of bacteria. When only the surfactant was used to remove oil, all of the tested surfactants helped remove oil from the waste silk and treatment that added 0.1% AEO-9 gave the lowest oil content.When surfactants were combined with bacteria to remove oil, the oil content was further reduced and the lowest oil content was obtained by combining AEO-9 and bacteria. The optimum conditions for oil removing by combining AEO-9 with bacteria were pH8.0, temperature 40°C, 4% (v/v) inoculum size and 3 days incubation time. Compared with untreated silk, silk treated by combining surfactants with bacteria resulted in a decrease in oil content and improvement in appearance. Scanning electron micrographs showed that treated samples had a clean surface.

scholarly journals STUDY OF MICELLES SIZE INFLUENCE ON THE EFFECTIVENESS OF RESIDUAL OIL DISPLACEMENT

2015 ◽  
pp. 36-40
Author(s):  
K. I. Babitskaya ◽  
V. V. Konovalov ◽  
T. V. Chikhereva
Keyword(s):  
Nonionic Surfactant ◽  
Nonionic Surfactants ◽  
Anionic Surfactants ◽  
Raw Materials ◽  
High Viscosity ◽  
Residual Oil ◽  
Laboratory Studies ◽  
Interfacial Activity ◽  
Oil Displacement ◽  
High Viscosity Oil

This paper presents the results of laboratory studies of the influence of the size of compound micelles created by a mixture of anionic surfactants, received from low quality hydrocarbon raw materials, and nonionic surfactants on the efficiency of residual oil displacement from highly water-encroached beds. It has been proved that varying the anionic/nonionic surfactant proportion in the mixture influences considerably on the size of the micelles formed, their interfacial activity and efficiency in high-viscosity oil displacement.

Study on Wettability Alteration of Quartz Surface by Surfactants

2014 ◽  
Vol 962-965 ◽  
pp. 539-543
Author(s):  
Zi Yuan Qi ◽  
Ye Fei Wang ◽  
Hai Yang Yu ◽  
Xiao Li Xu
Keyword(s):  
Nonionic Surfactants ◽  
Anionic Surfactants ◽  
Electrostatic Force ◽  
Dynamic Contact ◽  
Contact Angles ◽  
Wettability Alteration ◽  
Quartz Surface ◽  
Hydrophobic Force ◽  
Polar Components ◽  
Low Concentrations

In order to study the effect of surfactants on wettability of quartz surface, the dynamic contact angles of different surfactants on water-wet and oil-wet quartz surfaces were measured. The experimental results showed that the advancing contact angles of cationic surfactants, anionic surfactants and nonionic surfactants on oil-wet quartz surfaces decrease with the increase of surfactant concentrations; the wettability of water-wet quartz plates remains water-wet after treated by all three kinds of surfactants. Surfactants can reverse the wettability from oil-wet to water-wet at low concentrations; The electrostatic force, hydrophobic force and the attraction between surfactant and polar components of crude oil are the key interactions in the wettability alteration process.

scholarly journals Molecular dynamics simulation of four typical surfactants in aqueous solution

RSC Advances ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 3224-3231 ◽  
Author(s):  
Peng Shi ◽  
Hui Zhang ◽  
Lin Lin ◽  
Chunhui Song ◽  
Qingguo Chen ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Aqueous Solution ◽  
Molecular Dynamics Simulation ◽  
Nonionic Surfactants ◽  
Gemini Surfactants ◽  
Anionic Surfactants ◽  
Dynamics Simulation

The thermodynamic values of the four surfactants, anionic surfactants, nonionic surfactants, zwitterion surfactants and gemini surfactants, were calculated by molecular dynamics simulation.

Effect of Anionic Surfactants on the Partitioning of Nonionic Surfactants between Oil/Microemulsion/Water Phases

1986 ◽  
pp. 1231-1246 ◽  
Author(s):  
A. Graciaa ◽  
J. Lachaise ◽  
M. Bourrel ◽  
R. S. Schechter ◽  
W. H. Wade
Keyword(s):  
Nonionic Surfactants ◽  
Anionic Surfactants
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