Results 11 to 20 of about 22,970 (312)

Investigation of the Effect of Anionic and Cationic Surfactants on the Performance of Polyamide Membrane Nanofiltration [PDF]

آب و فاضلاب, 2019
Over the past decades, the sharp increase in population growth and industrialization in developing countries has reduced the quality and quantity of water resources.
Mohammad Sadeghi, Dariush Emadzadeh
doaj   +1 more source

Stimuli-Responsive Biomass Cellulose Particles Being Able to Reversibly Self-Assemble at Fluid Interface

Frontiers in Chemistry, 2020
Stimuli-responsive surface-active microcrystalline cellulose (MCC) particles are obtained by interaction with conventional cationic surfactants such as cetyltrimethylammonium bromide (CTAB) in aqueous media, where MCC are in situ hydrophobized by ...
Yue Zhu, Tingting Chen, Zhenggang Cui, Hong Dai, Li Cai   +4 more
doaj   +1 more source

Dissolution of anionic surfactant mesophases [PDF]

Soft Matter, 2017
A simple model for water penetration can describe the dissolution kinetics of an anionic surfactant mesophase.
Andreas S. Poulos, Christopher S. Jones, João T. Cabral   +2 more
openaire   +3 more sources

Manipulation of surface charges of oil droplets and carbonate rocks to improve oil recovery

Scientific Reports, 2021
This work investigates the effect of the surface charges of oil droplets and carbonate rocks in brine and in surfactant solutions on oil production.
Jian Hou, Ming Han, Jinxun Wang
doaj   +1 more source

Nonylphenol Ethoxylate Surfactants Modified by Carboxyl Groups for Foam EOR at High-Salinity Conditions

Energies, 2021
High mineralization of water complicates the use of foam in reservoir conditions. Anionic–nonionic surfactants are one of the best candidates for these conditions since they have both high surface activity and salt tolerance.
Emil R. Saifullin, Shinar Zhanbossynova, Dmitrii A. Zharkov, Roman S. Pavelyev, Chengdong Yuan, Mikhail A. Varfolomeev, Ulukbek Zh. Mirzakimov, Sergey Yu. Ivanov, Sergey A. Sitnov   +8 more
doaj   +1 more source

Taking a look accurately at the alteration of interfacial asphaltene film exposed to the ionic surfactants as demulsifiers

Scientific Reports, 2023
The water droplets surrounded by a rigid interfacial asphaltene (ASP) film is one of the major setbacks in the petroleum industry. In this study, the properties of the interfacial ASP films around water droplets exposed to ionic surfactants as ...
Soheila Javadian, S. Morteza Sadrpoor, Mahnaz Khosravian   +2 more
doaj   +1 more source

Surfactant-Assisted Assembly of Dipeptide Forming a Broom-like Structure

Molecules, 2022
Understanding the influence of surfactants on the assembly of peptides has a considerable practical motivation. In this paper, we systematically study the anionic surfactant-assisted assembly of diphenylalanine (FF).
Yunping Wei, Jie Zhang, Xingcen Liu
doaj   +1 more source

Surfactant evaluation for enhanced oil recovery: Phase behavior and interfacial tension

Open Chemistry, 2022
Surfactant flooding is one of the successful techniques employed in enhanced oil recovery (EOR) to extract the remaining original oil in place after primary and secondary recoveries are performed. Selection of the right EOR surfactant is an important but
Nadir Najiah, Shahruddin Sara, Othman Jofry   +2 more
doaj   +1 more source

Effects of Hydrophobic Silica on the Performance of Silicone-Based Antifoams [PDF]

Journal of Chemical and Petroleum Engineering, 2021
The efficiency of an antifoam consists of polydimethylsiloxane oil, hydrophobe silica particles, and either Sodium Dodecyl Sulfate (SDS) as an anionic surfactant, or Octyl phenyl deca ethylene oxide (Triton X-100) as nonionic surfactant for use in ...
Majid Ghiass, Atieh Askarizadeh, Hossien Bouhendi, Gholamreza Bagheri Marandi, Ghasem Naderi   +4 more
doaj   +1 more source

Effect of Surfactant Additives on Phase Inversion in Oil-Water Pipe Flow System [PDF]

Engineering and Technology Journal, 2017
This research investigates the effect of surfactant additives on phase inversion point in the oil-water flow in horizontal pipe. Two types of surfactants were used in the experiments; anionic type (sodium lignosulfonate (SLS)) at 200 ppm and cationic ...
A.A. Alwasiti, N.M. Farhan
doaj   +1 more source