Review
Chemistry, Multidisciplinary
Mohammed Benjelloun, Youssef Miyah, Gulsun Akdemir Evrendilek, Farid Zerrouq, Sanae Lairini
Summary: The increased environmental awareness and tighter regulatory standards have led various industries to seek appropriate wastewater treatment technologies for colored wastewater. This review provides detailed information on dyes, their classification, the environmental impact of water pollution, and the use of adsorption technology as a sustainable solution for dye removal. Studies evaluating the effectiveness of different adsorbents, particularly low-cost ones, in removing dyes from aqueous solutions are highlighted.
ARABIAN JOURNAL OF CHEMISTRY
(2021)
Article
Energy & Fuels
Xiaoxiao Li, Xiang'an Yue, Zhen Wang, Rongjie Yan, Yabing Guo
Summary: The study revealed that increasing flow rate can facilitate oil film detachment, but the effectiveness is limited by the action area and displacement efficiency. Different surfactants with varying interfacial tensions and emulsification behaviors were found to promote the dislodging of the oil film.
Article
Chemistry, Applied
Raquel Nunes Fernandes, Andrea Alves Simiqueli, Marcia Cristina Teixeira Ribeiro Vidigal, Valeria Paula Rodrigues Minim, Luis Antonio Minim
Summary: This study investigated the interfacial properties of oil-in-water emulsions containing sugar esters and polysaccharides. The synthesis of sucrose fatty acid esters using immobilized Candida antarctica lipase B, as well as the determination of equilibrium surface tension and interfacial viscoelasticity, were discussed. The presence of polysaccharides was found to increase interfacial tension and promote flocculation of droplets, while all emulsions exhibited excellent stability over 28 days.
Article
Engineering, Environmental
Xiao Liang, Jiyizhe Zhang, Min Li, Kai Wang, Guangsheng Luo
Summary: Surfactant adsorption plays an important role in microfluidic droplet formation, and this research proposes a method to determine the time-evolving interfacial tension using a differential pressure based microfluidic platform. The study shows that increasing surfactant concentration and flow rate promote surfactant adsorption.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Pattamas Rattanaudom, Bor-Jier Ben Shiau, Jeffrey Harry Harwell, Uthaiporn Suriyapraphadilok, Ampira Charoensaeng
Summary: The study successfully prepared silica nanoparticle (SNP) added ultralow interfacial tension foam (SNP-ULIFT foam) using ternary surfactant systems. The foam exhibited remarkable ability to form foam and ultralow interfacial tension, leading to significant improvement in oil recovery performance in core flood experiments.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Chemistry, Physical
Xiao Liang, Min Li, Kai Wang, Guangsheng Luo
Summary: In this study, a differential pressure-based method is proposed to investigate the adsorption behavior of surfactants in microfluidics. By analyzing auto-recognized images and the waveform of differential pressure, the interfacial tension and adsorption rates are obtained, providing an in-depth understanding of the adsorption mechanism and kinetic characteristics of surfactants in microfluidic systems.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Shubham Tiwari, B. Moses Abraham, Jayant K. Singh
Summary: This study investigates the combined effect of surfactants and nanoparticles at the air-water interface, showing that the presence of nanoparticles reduces the efficiency of Triton X-100 and Tween 20 surfactants primarily due to the adsorption of surfactants on the nanoparticles. Density functional theory simulations reveal that the adsorption of non-ionic surfactants on silica nanoparticles decreases as the degree of ionization of the nanoparticles increases, in agreement with experimental observations.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Multidisciplinary
Ahmed Wasel Alsmaeil, Antonios Kouloumpis, Georgia Potsi, Mohamed Amen Hammami, Mazen Yousef Kanj, Emmanuel P. Giannelis
Summary: This paper demonstrates the formation of stable and practical emulsions by assembling ionizable, pH-responsive silica nanoparticles. By modulating the charges of the functional groups of the nanoparticles and the oil, the assembly and behavior of the emulsion are controlled. The study provides new insights into the directed assembly of nanoparticles at fluid interfaces relevant to various applications.
Article
Engineering, Chemical
Emrah Kirtil, Enis Kurtkaya, Tatyana Svitova, Clayton J. Radke, Mecit Halil Oztop, Serpil Sahin
Summary: Quince seed extract shows promising results in stabilizing emulsions, with its interfacial properties on an oil-water interface changing with different concentrations, pH levels, and ionic strengths. QSE effectively reduces interfacial tension at different concentrations and has a relatively low critical aggregation concentration compared to similar hydrocolloids.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Biochemical Research Methods
Boxin Deng, Karin Schroen, Maartje Steegmans, Jolet de Ruiter
Summary: The size and properties of droplets, bubbles, emulsions, and foams are greatly influenced by dynamic interfacial tension (gamma(d)). However, this parameter is often difficult to measure due to the short time scales involved in droplet and bubble formation. To overcome this challenge, researchers have developed a microfluidic tensiometer that can measure gamma(d) by monitoring the formation time of droplets and bubbles. This tensiometer operates based on the principle of pressure balance and provides a simple and robust method to measure dynamic interfacial tension at relevant time scales.
Article
Crystallography
Lawrence W. Honaker, Anjali Sharma, Andy Schanen, Jan P. F. Lagerwall
Summary: This study measured the interfacial tension anisotropy of a common synthetic nematic LC compound 5CB against water using a microfluidic droplet aspiration technique. Results showed significant differences in interfacial tension under different LC alignment conditions, with stabilizer concentration also affecting the values. Future improvements in accuracy may be expected if a stabilizer better suited for tangential alignment can be found.
Article
Environmental Sciences
Sousan Hadi, Ensiyeh Taheri, Mohammad Mehdi Amin, Ali Fatehizadeh, Tejraj M. Aminabhavi
Summary: This study focused on the use of magnetized activated carbon pomegranate husk for the adsorption of 4-chlorophenol from synthetic wastewater. The results showed that adsorption efficiency was highly dependent on ionic strength, solution pH, and temperature, with equilibrium being reached in 60 minutes. Kinetic models and equilibrium isotherms were used to assess the adsorption data, with the Liu model showing the best fit and providing maximum adsorption capacities for different MPHAC concentrations.
Article
Chemistry, Multidisciplinary
Roxanne Fournier, Maximiliano Caye Diaz, Emily D. Cranston, John M. Frostad
Summary: Cellulose nanocrystals (CNCs) are sustainable particles that stabilize emulsions by adsorbing at droplet interfaces and providing a steric barrier. Adding salt can adjust the surface charges for increased droplet coverage. However, the interfacial tension and interfacial shear rheology are not strongly correlated with emulsion stability. Furthermore, at normal CNCs concentrations, the bulk rheology is significantly affected, making the details of interfacial rheology unimportant.
Review
Environmental Sciences
N. Nirmala, V Shriniti, K. Aasresha, J. Arun, K. P. Gopinath, S. S. Dawn, A. Sheeladevi, P. Priyadharsini, Kathirvel Birindhadevi, Nguyen Thuy Lan Chi, Arivalagan Pugazhendhi
Summary: Access to clean water has reduced in recent years due to pollution and man-made activities. The adsorption method has advantages in wastewater treatment. Graphene-based adsorbents can adsorb and catalyze reactions simultaneously. Graphene aerogels are effective in removing heavy metals and dyes. Graphene composites have mesoporous and microporous structures with good adsorption efficiency.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Chemical
Hailu Demissie, Guangyu An, Ruyuan Jiao, Tharindu Ritigala, Sen Lu, Dongsheng Wang
Summary: The method utilizes SDS as a sorbet to modify polycationic nanoclusters effectively removing dyes and suspended particles simultaneously in water treatment. Experimental analysis confirmed the efficiency and applicability of this approach for the treatment of dye wastewater.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)