Article
Chemistry, Applied
Akapong Kongjaroen, Pawadee Methacanon, Nispa Seetapan, Asira Fuongfuchat, Chaiwut Gamonpilas, Katsuyoshi Nishinari
Summary: This study investigated the rheological effects of different dispersing media on thickened liquids prepared with xanthan gum or guar gum-based thickening powders. The results showed that the dispersing media had a significant impact on the zero shear viscosity, but had little effect on the high shear viscosity. Additionally, the dispersing media had a significant effect on the extensional rheological characteristics, with apple juice and milk weakening the extensional property of xanthan gum-based thickened beverages, and milk enhancing the extensional property of guar gum-based thickened beverages.
FOOD HYDROCOLLOIDS
(2022)
Article
Biochemistry & Molecular Biology
Hua Xu, Lan Yang, Pengkai Xie, Qinying Zhou, Yuhang Chen, Emad Karrar, Huifang Qi, Ruixue Lin, Yun Zhu, Jun Jin, Qingzhe Jin, Xingguo Wang
Summary: The present study evaluated the effects of carrageenan and its blends with xanthan gum and guar gum on the stability of partially crystalline emulsions. The results showed that the gum blends significantly decreased the viscosity, particle size, and interfacial protein concentration of the emulsions, leading to improved stability.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Biochemistry & Molecular Biology
Hua Xu, Lan Yang, Pengkai Xie, Qinying Zhou, Yuhang Chen, Emad Karrar, Huifang Qi, Ruixue Lin, Yun Zhu, Jun Jin, Qingzhe Jin, Xingguo Wang
Summary: In this study, partially crystalline emulsions (PCEs) were prepared using different combinations of gums. The results showed that the PCEs stabilized by gum blends had lower apparent viscosities, particle sizes, and interfacial protein concentrations compared to those stabilized by single gum. Blending the gums also contributed to the formation of a firmer three-dimensional matrix and reduced hydrophobic interactions. The stability of the emulsions was mainly affected by clarification at the bottom and agglomeration at the top. PCE-CG + XG + GG exhibited the best stability after three months of storage. The study provides valuable information for the manufacture of stable PCE foods.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Food Science & Technology
Yaxue Hu, Yangyi Zhang, Jiamin Xu, Ye Zi, Jiawei Peng, Yulu Zheng, Xichang Wang, Jian Zhong
Summary: The effects of polysaccharide types, reaction time, and reaction pH on the stabilization of fish oil-loaded emulsions using fish gelatin-polysaccharide Maillard products were studied. The results showed that the Maillard conjugates had better emulsifying properties compared to pure fish gelatin and pure polysaccharides.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Chemical
Subhadeep Chakraborty, Sonai Dutta, Rahul Chatterjee, Jagannath Chanda, Sagar Pal, Abhijit Bandyopadhyay
Summary: A decorated semi-synthetic flocculant derived from Xanthan gum has been synthesized and found to efficiently unsettle stable kaolin suspension at low concentration (0.25wt.%). The copolymer with the maximum extent of branching (70.5%) exhibited the fastest settling time and the lowest turbidity, especially at pH 7 and the isoelectric point.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Energy & Fuels
Moumita Maiti, Prathibha Pillai, Aniruddha Sharma, Ajoy Kumar Bhaumik, Ajay Mandal
Summary: This study investigates the effect of two ionic liquids on the formation and dissociation of gas hydrates and finds that they are effective inhibitors. The inhibition performance of the ionic liquids increases with increasing alkyl chain length.
Article
Energy & Fuels
Moumita Maiti, Prathibha Pillai, Aniruddha Sharma, Ajoy Kumar Bhaumik, Ajay Mandal
Summary: In this study, the effect of two ionic liquids on the formation and dissociation of hydrates was investigated. The results showed that these ionic liquids were effective in inhibiting hydrate formation both thermodynamically and kinetically. The induction time and formation rate of hydrates were significantly increased in the presence of these ionic liquids compared to pure water. Additionally, the performance of the ionic liquids in hydrate inhibition increased with increasing alkyl chain length.
Article
Engineering, Chemical
Pawan Gupta, Vishnu Chandrasekharan Nair, Jitendra S. Sangwai
Summary: Recent studies have explored the use of chemical inhibitors and polymer systems to improve methane production from hydrate-bearing sediments. Polyacrylamide has been identified as an effective kinetic hydrate inhibitor, and seven experiments were conducted to evaluate the gas production ratio and the effectiveness of inhibitor aqueous solution in methane recovery. This research provides valuable insights into enhancing methane recovery using conventional hydrate inhibitors and oilfield polymers.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Food Science & Technology
Yogesh Kumar, Soumen Roy, Ariha Devra, Atul Dhiman, Pramod K. Prabhakar
Summary: The study found that the use of different amplitudes of ultrasound treatment and various hydrocolloids as thickeners can affect the stability and rheological properties of mayonnaise. As the ultrasound amplitude increased, the apparent viscosity of the mayonnaise samples decreased, with the type of thickener used also impacting the results.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Energy & Fuels
Xuebing Zhou, Qian Zhang, Zhen Long, Deqing Liang
Summary: The study found that the addition of KHIs significantly reduced the self-preservation effect of CH4 hydrates and increased the dissociation rate of hydrates. PVP-K90 and PVCap had different mechanisms of action, with the former embedded in small ice crystals inhibiting the connections of plate-like ice crystals, and the latter inducing dendritic growth of CH4 hydrates, leading to an increase in specific surface area.
Review
Environmental Sciences
Muhammad Usman, Muhammad Babar Taj, Sonia Alexandra Correia Carabineiro
Summary: The importance of water for all living organisms cannot be underestimated, thus protecting its sources is crucial. Biopolymers, such as guar gum and xanthan gum, are gaining attention due to their eco-friendly, non-toxic, reusable, abundant and cost-effective properties. Gum-based nanocomposites have shown great potential in removing heavy metals and colored dyes from water through adsorption and degradation. This review provides a comprehensive analysis of the significance of gum-based nanomaterials in wastewater treatment, including preparation, characterization, kinetics, and the involved mechanisms.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Applied
Jinyan Gao, Qiang Shi, Yu Ye, Yong Wu, Hongbing Chen, Ping Tong
Summary: This study evaluated the effects of xanthan and guar gum on the spatial structure and functional properties of egg white proteins under different pasteurization conditions. The results showed that xanthan gum reduced hydrophobicity while guar gum increased it. Adding 0.8% guar gum and pasteurizing at 60 degrees Celsius for 3.5 minutes greatly improved the emulsifying stability of egg white. However, adding 0.8% xanthan gum led to a porous and loose gel structure. Therefore, the concentration of gums and pasteurization parameters should be considered together when pasteurizing liquid egg products.
Review
Pharmacology & Pharmacy
Anna Froelich, Emilia Jakubowska, Barbara Jadach, Piotr Gadzinski, Tomasz Osmalek
Summary: This article provides a summary of the recent studies on polysaccharide compounds obtained from natural sources, and their potential as drug carriers. These compounds are biocompatible, biodegradable, and sensitive to degradation by the colon microbiome, making them attractive for pharmaceutical applications. The article focuses on the formulation and application of micro- and nanoparticles derived from gums and their blends with other polymers.
Article
Polymer Science
Jenifer Santos, Luis A. Trujillo-Cayado, Marina Barquero, Nuria Calero
Summary: This study analyzed the relationship between physical stability and encapsulation efficiency of nanoemulsions based on linseed oil, using two different polysaccharides as stabilizers. The results demonstrated that enhanced physical stability is directly related to higher values of encapsulation efficiency, highlighting the importance of selecting the right polysaccharide type and concentration for stable nanoemulsions as vehicles for active ingredients.
Article
Construction & Building Technology
Irem Bozyigit, Hande Ozenc Zingil, Selim Altun
Summary: Soil improvement methods using environmentally friendly additives have gained popularity in geotechnical applications. The mechanical properties of eco-friendly polymers, such as xanthan gum, guar gum, and anionic polyacrylamide polymer, were investigated under freeze-thaw action on kaolin clay specimens. Both synthetic and biological polymers induced strength gain, with guar gum showing the most significant improvement. The strength increase in polyacrylamide polymer was higher than in previous studies. Curing time did not significantly affect strength gain in anionic polyacrylamide-contained specimens. Freeze-thaw action caused a reduction in strength, but anionic polymer was the most resistant to this effect. Eco-friendly polymers are suitable for regions with freeze-thaw action.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Energy & Fuels
Srawanti Medhi, Satyajit Chowdhury, Jitendra S. Sangwai, Dharmender Kumar Gupta
Summary: This study investigated the effect of aluminum oxide nanoparticles on the properties of salt-polymer-based drilling fluids. The addition of aluminum oxide nanoparticles improved the rheological properties, fluid loss control, and viscoelastic properties of the drilling fluid.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Article
Energy & Fuels
Rohan M. Jadhav, Ganesh Kumar, N. Balasubramanian, Jitendra S. Sangwai
Summary: This study investigates the synergistic effect of nickel nanoparticles and solvent tetralin on the rheological properties and composition of extra-heavy crude oil, revealing that the addition of 0.2 wt% nickel nanoparticles can significantly reduce the viscosity of oil. Aquathermal upgrading of EHO was conducted with nanoparticles, confirming the catalytic properties of nickel nanoparticles in upgrading EHO through tests such as FT-IR, GC-MS, and SARA characterization. Additionally, a new mechanism describing the dynamics of nickel nanoparticles in contact with asphaltene clusters has been proposed for better understanding.
Article
Engineering, Chemical
Chandan Sahu, Anirbid Sircar, Jitendra S. Sangwai, Rajnish Kumar
Summary: This study investigates the impact of organic aliphatic amines on CO2 hydrate kinetics and finds that the additives significantly promote nucleation time, with decylamine showing the best CO2 absorption performance. The study also proposes a suitable well design for enhanced CO2 sequestration as solid hydrates in subsea sediments.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Review
Engineering, Chemical
Satyajit Chowdhury, Saket Shrivastava, Abhijit Kakati, Jitendra S. Sangwai
Summary: This review provides a detailed discussion on the properties and influencing factors of surfactants used in chemical enhanced oil recovery (cEOR), as well as the effects of different types of surfactants on oil recovery. Additionally, emerging surfactant flooding aids and their mechanisms, such as nanotechnology applications and surfactant-low salinity water flooding, are highlighted. The challenges faced by the industry in implementing surfactant cEOR are also outlined.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Chandan Sahu, Anirbid Sircar, Jitendra S. Sangwai, Rajnish Kumar
Summary: This study focuses on the kinetics of CO2 hydrate formation in both pure water and seawater, with the use of low-concentration inorganic emulsifiers STPP and TSPP. The results demonstrate that STPP significantly improves the induction time and CO2 gas uptake, as well as the rate of hydrate formation.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2022)
Article
Energy & Fuels
Jitendra S. Sangwai, Siddhant Kumar Prasad
Summary: Investigating the effects of surfactant concentration and droplet size distribution on the rheology of water-in-oil emulsion systems is important for understanding the antiagglomeration properties and finding suitable strategies for flow assurance issues. This study focuses on the rheological characterization of hydrate slurries with a mixed surfactant system and demonstrates that the presence of surfactants can increase the viscosity of the slurries up to a certain concentration, but higher concentrations can reduce viscosity and act as antiagglomerants.
Article
Thermodynamics
Jugal N. Anil, Dnyaneshwar R. Bhawangirkar, Jitendra S. Sangwai
Summary: This study presents a thermodynamic model for predicting the phase equilibria of gas hydrates using an Equation of State (EOS) and an Activity Coefficient Model (ACM). Different combinations of EOS and ACM were examined to improve the accuracy of hydrate prediction. The model showed significant improvement in predicting sII hydrates and some combinations demonstrated good performance for different compounds.
FLUID PHASE EQUILIBRIA
(2022)
Article
Energy & Fuels
N. Sakthipriya, Mukesh Doble, Jitendra S. Sangwai
Summary: The research aims to analyze the impact of microbial activity and the synergetic effect of microbial interaction, pressure, and temperature on the viscosity of crude oil in high-pressure environments. By studying the application of Bacillus subtilis at various temperatures and pressures, it was found that the bacterium effectively reduced the viscosity of waxy crude oil. The proposed model incorporating thermodynamic and microbial kinetics provided satisfactory predictions for the viscosity of crude oil during microbial degradation, demonstrating the suitability of Bacillus subtilis in crude oil production and transportation.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Uma Sankar Behera, Jitendra S. Sangwai
Summary: The study explores the use of a novel silica-based hybrid nanofluid for enhanced oil recovery in matured oil reservoirs. The hybrid nanofluid alters the interfacial properties of the rock-oil-water systems, resulting in a shift from water-wet to strongly water-wet sand surfaces and thereby increasing oil recovery.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Uma Sankar Behera, Ganesh Kumar, Jitendra S. Sangwai
Summary: Oil recovery from matured oilfields is challenging, and low-salinity water (LSW)-based enhanced oil recovery (EOR) methods can help improve the recovery. In this study, experiments were conducted to understand the oil displacement phenomena using nanofluids. The results showed that increasing the concentration of nanoparticles in the nanofluids improved oil displacement, but there was a slight decrease beyond 1000 ppm.
Article
Engineering, Chemical
Satyajit Chowdhury, Mayank Rakesh, Jitendra S. Sangwai
Summary: Injecting fluids during the secondary and tertiary stages of oil production can greatly enhance the total recovery of crude oil. The process of improving vertical and areal sweep efficiency is influenced by viscous and capillary forces. In addition to reservoir rock properties, the properties of reservoir and displacing fluids also play a crucial role in enhanced oil recovery.
INDIAN CHEMICAL ENGINEER
(2023)
Article
Energy & Fuels
Siddhant Kumar Prasad, Jitendra S. Sangwai
Summary: This study investigated the impact of chain length of saturated hydrocarbons on methane hydrate formation and dissociation kinetics in oil-in-water dispersions. Sodium dodecyl sulfate was used as a surfactant to simulate natural surfactants. The results showed that an appropriate concentration of SDS enhanced the hydrate formation during initial stages, but higher concentrations disrupted the structure of local water. With a fixed SDS concentration, higher carbon chain length accelerated the hydrate formation during initial stages before reaching similar formation kinetics. Higher concentrations and higher alkane content delayed the gas release during dissociation.
Article
Thermodynamics
Rahul Sarkhel, Chandan Sahu, Rajnish Kumar, Jitendra S. Sangwai
Summary: This study investigates the inhibitory effects of alkalis on methane hydrate formation and finds that sodium hydroxide performs better as an inhibitor. A simple model based on the vdW-P thermodynamic model accurately predicts the phase equilibrium of methane hydrate in the presence of alkali solutions. This research is important for designing efficient and cost-effective thermodynamic inhibitors for methane hydrate in the oil and gas industry.
JOURNAL OF CHEMICAL THERMODYNAMICS
(2023)
Article
Engineering, Chemical
Ganesh Kumar, Uma Sankar Behera, Ethayaraja Mani, Jitendra S. Sangwai
Summary: In this study, a novel nanofluid was prepared using positively charged Ludox CL silica nanoparticles and anionic Aerosol-OT surfactant to improve oil recovery from matured reservoirs. Experimental results showed that the nanofluid had higher oil recovery rate compared to traditional imbibition fluids, and exhibited excellent stability and potential as an imbibition agent for enhanced oil recovery applications.
ACS ENGINEERING AU
(2022)
Article
Energy & Fuels
Ankit Sharma, Abhijit Kakati, Sivabalan Sakthivel, Prashant Jadhawar, Jitendra Sangwai
Summary: The study evaluated the applicability of ionanofluids for enhanced oil recovery (EOR) applications and found that ionanofluids significantly reduce the interfacial tension of crude oil-nanofluid and have higher enhanced oil recovery efficiencies compared to nanofluids and ionic liquids alone, indicating their potential as excellent future EOR agents.
INTERNATIONAL JOURNAL OF OIL GAS AND COAL TECHNOLOGY
(2022)