Article
Chemistry, Physical
Chia-Yi Lin, Shih-Huang Tung
Summary: This study investigated the rheological behaviors and self-assembled structures of lecithin wormlike micelles induced by LiCl, CaCl2, and LaCl3 in cyclohexane. The decrease in viscosity was found to be accompanied by a shortening in micelle length, which was attributed to the movement of excess inorganic salts altering the effective molecular geometry. The study suggested that the binding sites of inorganic salts in lecithin headgroups play a key role in determining the self-assembled structures of lecithin reverse micelles.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Spectroscopy
Madhushree Mal, Debabrata Mandal
Summary: Alloxazine phototautomerization occurs through an excited state double proton transfer mechanism involving cyclic intermolecular hydrogen-bonded complexes with hydroxylic solvents. In AOT/alkane dispersions, water addition switches on the tautomerization process by forming water nano-droplets, while phototautomerization is hindered in Glycerol due to steric considerations.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Chemistry, Multidisciplinary
Enshirah Da'na, Wafa Shamsan Al-Arjan, Sukainah Al-Saeed, Mohamed Ramadan El-Aassar
Summary: Amine modified nano-silica was prepared via a one-pot route in water in oil microemulsion, and the amount of N-[3-(Trimethoxysilyl)propyl]ethylenediamine (DA) added to the synthesis mixture was found to significantly impact the characteristics of the obtained nanocomposites and their efficiency in removing zinc ions. Increasing the amount of DA added led to higher pH(0), larger hydrodynamic particle size, and increased crystallinity, ultimately affecting the adsorption performance of the nanocomposites.
Review
Food Science & Technology
Lei Zhou, Jian Zhang, Lujuan Xing, Wangang Zhang
Summary: This review discusses the effects of ultrasound-assisted emulsification (UE) in food industry, demonstrating its impact on emulsion properties and advantages. Ultrasound can enhance emulsifying properties, reduce droplet size, and increase the zeta potential of emulsions.
TRENDS IN FOOD SCIENCE & TECHNOLOGY
(2021)
Article
Energy & Fuels
Ekarong Sukjit, Atthaphon Maneedaeng
Summary: Microemulsion biofuels, prepared from rice bran oil and ethanol using mixed nonionic surfactant systems, showed good solubility and fuel properties, although some parameters were slightly substandard. Experimental data revealed that the combustion and exhaust emission characteristics of microemulsion biofuels were promising, although less efficient than commercial diesel fuel.
Article
Food Science & Technology
Dong-wen Fu, Ye Tian, Zi-han Wang, Jin-zhe Li, Da-yong Zhou, Bei-wei Zhu, Liang Song
Summary: To overcome the limitation of non-edible surfactants, a surfactant-free self-microemulsion drug delivery system (SMEDDS) was developed by using phospholipids and triglycerides from krill oil as the surfactant and oil phase, respectively, and incorporating edible glycerol as a co-surfactant. Glycerol facilitated the formation of organogels by phospholipids in krill oil, and homogenization disrupted the organogels to form SMEDDS. The resulting microemulsion was stable and significantly improved the bioaccessibility of curcumin in vitro. This study provides insights into the formation of marine lipid-based SMEDDS and expands their application in food containing hydrophobic active ingredients.
Article
Polymer Science
Takahiro Sato
Summary: A lattice theory is proposed for block copolymer solutions near the boundary between the micellization and liquid-liquid phase separation regions. A new kinetic process of micellization is suggested, where small concentrated-phase droplets are first formed and then transformed into micelles in the early stage of micellization. Furthermore, a unique ripening process is observed in the late stage of phase separation, where the growing concentrated-phase droplet size is proportional to the square root of the time.
Article
Multidisciplinary Sciences
Nilanjan Pal, Yara Alzahid, Abdulkareem M. Alsofi, Muhammad Ali, Nurudeen Yekeen, Hussein Hoteit
Summary: This paper presents a systematic approach for designing and formulating surfactant-stabilized microemulsions for enhanced oil recovery. The methodology involves extensive laboratory work and functional assessments, considering factors such as cost, environment, and reservoir considerations.
Article
Engineering, Chemical
Christopher J. Dyson, Martin Priest, Peter M. Lee
Summary: The tribological performance of the piston assembly of an automotive engine is influenced by the flow mechanisms that supply lubricant to the upper piston rings. The oil consumption, emissions, and wear in engines are affected by these mechanisms. Experimental studies suggest that droplets of lubricant carried in the gas flows through the piston assembly may contribute to this. This investigation measures the droplet size distribution in the crankcase of a fired gasoline engine and finds that higher base oil viscosity and the use of a polymeric viscosity modifier can reduce the proportion of mist-sized droplets, especially at high load.
Article
Chemistry, Physical
Robyn E. Ridley, Hoorshad Fathi-Kelly, James P. Kelly, Victor R. Vasquez, Olivia A. Graeve
Summary: The hypothesis suggests that reverse micellar solutions are stable systems where surfactant molecules surround water droplets in an organic phase. Through experiments, it was found that the size of reverse micelles can be described by the Debye screening length, cation valency, and specific anion hydrated radius. The model accurately predicts reverse micelle sizes when monovalent, divalent, and trivalent salts are added, as long as the primary hydrolyzed cation species has a charge equal to the cation valency.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Multidisciplinary Sciences
Kul Pun, Faik Hamad, Tariq Ahmed, Johnson Ugwu, Safa Najim, James Eyers, Gary Lawson, Paul Russell
Summary: The critical design parameter for a separator is the size of oil droplets in the water phase. This study improves the design by investigating the parameters that control droplet size, frequency, and distribution. Experimental work was performed to examine the effects of flow rates and oil layer thickness on these parameters. The findings show that droplet properties are influenced by the interaction between oil flow rate and oil pad thickness, and the distribution of droplet sizes is controlled by oil layer thickness.
Article
Chemistry, Physical
Noureddine Lebaz, Kristy Touma, Nida Sheibat-Othman
Summary: A novel method for preparing water-in-oil-in-water double emulsions using a two-step process with high shear device and static mixers is proposed and evaluated. The method showed efficient formation of monomodal droplet size distributions and high encapsulation efficiency, despite the shear thinning behavior of the inner emulsions. The range of droplet size variation in the double emulsion could be controlled while maintaining a residence time of less than a second, making this process a promising alternative to traditional batch processes.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Mechanics
Yan Pang, Qingshan Yang, Xiang Wang, Zhaomiao Liu
Summary: This study investigates droplet generation in T-junction microchannels with contractive structures under different flow rates and viscosity conditions through numerical simulation. The research reveals that the droplet size decreases and then increases with increasing viscosity ratio, establishing a model for the transition of generation modes.
Article
Chemistry, Applied
Ha Youn Song, David Julian McClements, Seung Jun Choi
Summary: The effects of alkyl chains on the solubilization of alpha-tocopherol and curcumin in Brij micelles were investigated. Brij L23 micelles showed the largest increase in dimensions due to the presence of the guest molecules. The guest molecules were preferentially located within the palisade layers of micelles, suggesting the potential importance of these findings for the formulation of colloidal delivery systems.
Article
Thermodynamics
Zhenbin Chen, Li Wang, Zhilong Wei, Yu Wang, Jiaojun Deng
Summary: Experimental studies have shown that the glucose blend ratio significantly affects the stability and homogeneity of emulsified fuel, while an increase in water concentration and HLB value has a negative impact on stability. Optimal long-term stability and minimum average droplet size can be achieved under specific conditions.
Article
Thermodynamics
Chodchanok Attaphong, Vinay Singh, Arun Balakrishnan, Linh D. Do, Noulkamol Arpornpong, Ramkumar N. Parthasarathy, Sub R. Gollahalli, Sutha Khaodhiar, David A. Sabatini
INTERNATIONAL JOURNAL OF GREEN ENERGY
(2016)
Article
Engineering, Environmental
Noulkamol Arpornpong, David A. Sabatini, Sutha Khaodhiar, Ampira Charoensaeng
INTERNATIONAL JOURNAL OF LIFE CYCLE ASSESSMENT
(2015)
Article
Chemistry, Physical
Noulkamol Arpornpong, Ampira Charoensaeng, Sutha Khaodhiar, David A. Sabatini
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2018)
Article
Engineering, Environmental
Ampira Charoensaeng, Sutha Khaodhiar, David A. Sabatini, Noulkamol Arpornpong
ENVIRONMENTAL ENGINEERING RESEARCH
(2018)
Article
Energy & Fuels
Chodchanok Attaphong, David A. Sabatini
Article
Energy & Fuels
Chodchanok Attaphong, Linh Do, David A. Sabatini
Article
Chemistry, Physical
Chodchanok Attaphong, Emma Asnachinda, Ampira Charoensaeng, David A. Sabatini, Sutha Khaodhiar
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2010)
Article
Chemistry, Applied
Noulkamol Arpornpong, Ampira Charoensaeng, David A. Sabatini, Sutha Khaodhiar
JOURNAL OF SURFACTANTS AND DETERGENTS
(2010)
Article
Chemistry, Applied
Noulkamol Arpornpong, Jirapat Lewlomphaisan, Ampira Charoensaeng, David A. Sabatini, Sutha Khaodhiar
JOURNAL OF SURFACTANTS AND DETERGENTS
(2013)
Article
Chemistry, Applied
Linh D. Do, Chodchanok Attaphong, John F. Scamehorn, David A. Sabatini
JOURNAL OF SURFACTANTS AND DETERGENTS
(2015)
Article
Chemistry, Applied
T. T. Phan, C. Attaphong, D. A. Sabatini
JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY
(2011)
Article
Biotechnology & Applied Microbiology
Noulkamol Arpornpong, Rattiya Padungpol, Nichakorn Khondee, Chantra Tongcumpou, Suwat Soonglerdsongpha, Komkrit Suttiponparnit, Ekawan Luepromchai
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2020)
Article
Energy & Fuels
Yingna Du, Chen Huang, Wei Jiang, Qiangwei Yan, Yongfei Li, Gang Chen
Summary: In this study, anionic surfactants modified hydrotalcite was used as a flow improver for crude oil under low-temperature conditions. The modified hydrotalcite showed a significant viscosity reduction effect on crude oil. The mechanism of the modified hydrotalcite on viscosity and pour point of crude oil was explored through characterization and analysis of the modified hydrotalcite and oil samples.
Article
Energy & Fuels
Mohammad Saeid Rostami, Mohammad Mehdi Khodaei
Summary: In this study, a hybrid structure, MIL-53(Al)@MWCNT, was synthesized by combining MIL-53(Al) particles and -COOH functionalized multi-walled carbon nanotube (MWCNT). The hybrid structure was then embedded in a polyethersulfone (PES) polymer matrix to prepare a mixed matrix membrane (MMM) for CO2/CH4 and CO2/N2 separation. The addition of MWCNTs prevented MIL-53(Al) aggregation, improved membrane mechanical properties, and enhanced gas separation efficiency.
Article
Energy & Fuels
Yunlong Li, Desheng Huang, Xiaomeng Dong, Daoyong Yang
Summary: This study develops theoretical and experimental techniques to determine the phase behavior and physical properties of DME/flue gas/water/heavy oil systems. Eight constant composition expansion (CCE) tests are conducted to obtain new experimental data. A thermodynamic model is used to accurately predict saturation pressure and swelling factors, as well as the phase boundaries of N2/heavy oil systems and DME/CO2/heavy oil systems, with high accuracy.
Article
Energy & Fuels
Morteza Afkhamipour, Ebad Seifi, Arash Esmaeili, Mohammad Shamsi, Tohid N. Borhani
Summary: Non-conventional amines are being researched worldwide to overcome the limitations of traditional amines like MEA and MDEA. Adequate process and thermodynamic models are crucial for understanding the applicability and performance of these amines in CO2 absorption, but studies on process modeling for these amines are limited. This study used rate-based modeling and Deshmukh-Mather method to model CO2 absorption by DETA solution in a packed column, validated the model with experimental data, and conducted a sensitivity analysis of mass transfer correlations. The study also compared the CO2 absorption efficiency of DETA solution with an ionic solvent [bmim]-[PF6] and highlighted the importance of finding optimum operational parameters for maximum absorption efficiency.
Article
Energy & Fuels
Arastoo Abdi, Mohamad Awarke, M. Reza Malayeri, Masoud Riazi
Summary: The utilization of smart water in EOR operations has gained attention, but more research is needed to understand the complex mechanisms involved. This study investigated the interfacial tension between smart water and crude oil, considering factors such as salt, pH, asphaltene type, and aged smart water. The results revealed that the hydration of ions in smart water plays a key role in its efficacy, with acidic and basic asphaltene acting as intrinsic surfactants. The pH also influenced the interfacial tension, and the aged smart water's interaction with crude oil depended on asphaltene type, salt, and salinity.
Article
Energy & Fuels
Dongao Zhu, Kun Zhu, Lixian Xu, Haiyan Huang, Jing He, Wenshuai Zhu, Huaming Li, Wei Jiang
Summary: In this study, cobalt-based metal-organic frameworks (Co-based MOFs) were used as supports and co-catalysts to confine the NHPI catalyst, solving the leaching issue. The NHPI@Co-MOF with carboxyl groups exhibited stronger acidity and facilitated the generation of active oxygen radicals O2•, resulting in enhanced catalytic activity. This research provides valuable insights into the selection of suitable organic linkers and broadens the research horizon of MOF hybrids in efficient oxidative desulfurization (ODS) applications.
Article
Energy & Fuels
Edwin G. Hoyos, Gloria Amo-Duodu, U. Gulsum Kiral, Laura Vargas-Estrada, Raquel Lebrero, Rail Munoz
Summary: This study investigated the impact of carbon-coated zero-valent nanoparticle concentration on photosynthetic biogas upgrading. The addition of nanoparticles significantly increased microalgae productivity and enhanced nitrogen and phosphorus assimilation. The presence of nanoparticles also improved the quality of biomethane produced.
Article
Energy & Fuels
Yao Xiao, Asma Leghari, Linfeng Liu, Fangchao Yu, Ming Gao, Lu Ding, Yu Yang, Xueli Chen, Xiaoyu Yan, Fuchen Wang
Summary: Iron is added as a flocculant in wastewater treatment and the hydrothermal carbonization (HTC) of sludge produces wastewater containing Fe. This study investigates the effect of aqueous phase (AP) recycling on hydrochar properties, iron evolution and environmental assessment during HTC of sludge. The results show that AP recycling process improves the dewatering performance of hydrochar and facilitates the recovery of Fe from the liquid phase.
Article
Energy & Fuels
He Liang, Tao Wang, Zhenmin Luo, Jianliang Yu, Weizhai Yi, Fangming Cheng, Jingyu Zhao, Xingqing Yan, Jun Deng, Jihao Shi
Summary: This study investigated the influence of inhibitors (carbon dioxide, nitrogen, and heptafluoropropane) on the lower flammability limit of hydrogen and determined the critical inhibitory concentration needed for complete suppression. The impact of inhibitors on explosive characteristics was evaluated, and the inhibitory mechanism was analyzed with chemical kinetics. The results showed that with the increase of inhibitor quantity, the lower flammability limit of hydrogen also increased. The research findings can contribute to the safe utilization of hydrogen energy.
Article
Energy & Fuels
Zonghui Liu, Zhongze Zhang, Yali Zhou, Ziling Wang, Mingyang Du, Zhe Wen, Bing Yan, Qingxiang Ma, Na Liu, Bing Xue
Summary: In this study, high-performance solid catalysts based on phosphotungstic acid (HPW) supported on Zr-SBA-15 were synthesized and evaluated for the one-pot conversion of furfural (FUR) to γ-valerolactone (GVL). The catalysts were characterized using various techniques, and the ratio of HPW and Zr was found to significantly affect the selectivity of GVL. The HPW/Zr-SBA-15 (2-4-15) catalyst exhibited the highest GVL yield (83%) under optimized reaction conditions, and it was determined that a balance between Bronsted acid sites (BAS) and Lewis acid sites (LAS) was crucial for achieving higher catalytic performance. The reaction parameters and catalyst stability were also investigated.
Article
Energy & Fuels
Michael Stoehr, Stephan Ruoff, Bastian Rauch, Wolfgang Meier, Patrick Le Clercq
Summary: As part of the global energy transition, an experimental study was conducted to understand the effects of different fuel properties on droplet vaporization for various conventional and alternative fuels. The study utilized a flow channel to measure the evolution of droplet diameters over time and distance. The results revealed the temperature-dependent effects of physical properties, such as boiling point, liquid density, and enthalpy of vaporization, and showed the complex interactions of preferential vaporization and temperature-dependent influences of physical properties for multi-component fuels.
Article
Energy & Fuels
Yuan Zhuang, Ruikang Wu, Xinyan Wang, Rui Zhai, Changyong Gao
Summary: Through experimental validation and optimization of the chemical kinetic model, it was found that methanol can accelerate the oxidation reaction of ammonia, and methanol can be rapidly oxidized at high concentration. HO2 was found to generate a significant amount of OH radicals, facilitating the oxidation of methanol and ammonia. Rating: 7.5/10.
Article
Energy & Fuels
Radwan M. EL-Zohairy, Ahmed S. Attia, A. S. Huzayyin, Ahmed I. EL-Seesy
Summary: This paper presents a lab-scale experimental study on the impact of diethyl ether (DEE) as an additive to waste cooking oil biodiesel with Jet A-1 on combustion and emission features of a swirl-stabilized premixed flame. The addition of DEE to biodiesel significantly affects the flame temperature distribution and emissions. The W20D20 blend of DEE, biodiesel, and Jet A-1 shows similar flame temperature distribution to Jet A-1 and significantly reduces UHC, CO, and NOx emissions compared to Jet A-1.
Article
Energy & Fuels
Jiang Bian, Ziyuan Zhao, Yang Liu, Ran Cheng, Xuerui Zang, Xuewen Cao
Summary: This study presents a novel method for ammonia separation using supersonic flow and develops a mathematical model to investigate the condensation phenomenon. The results demonstrate that the L-P nucleation model accurately characterizes the nucleation process of ammonia at low temperatures. Numerical simulations also show that increasing pressure and concentration can enhance ammonia condensation efficiency.
Article
Energy & Fuels
Shiyuan Pan, Xiaodan Shi, Beibei Dong, Jan Skvaril, Haoran Zhang, Yongtu Liang, Hailong Li
Summary: Integrating CO2 capture with biomass-fired combined heat and power (bio-CHP) plants is a promising method for achieving negative emissions. This study develops a reliable data-driven model based on the Transformer architecture to predict the flowrate and CO2 concentration of flue gas in real time. The model validation shows high prediction accuracy, and the potential impact of meteorological parameters on model accuracy is assessed. The results demonstrate that the Transformer model outperforms other models and using near-infrared spectral data as input features improves the prediction accuracy.