Article
Thermodynamics
Zhi Li, Yue Zhang, Yimao Shen, Liwei Cheng, Bei Liu, Kele Yan, Guangjin Chen, Tianduo Li
Summary: The synergistic mechanism of KHIs and THIs in preventing methane hydrate formation involves three stages, with gas adsorption playing a dominant role. The addition of THIs to solutions containing KHIs enhances methane attraction and weakens the driving force for hydrate formation. It is suggested that the methane adsorption capacity of hybrid inhibitors should be considered in future development.
Article
Chemistry, Physical
Liwei Cheng, Zhi Li, Jinlong Cui, Ran Zhu, Jia Li, Huibo Qin, Bei Liu, Guangjin Chen, Fulong Ning
Summary: As an important hydrate control method, kinetic hydrate inhibitors (KHIs) have gained extensive attention in the oil and gas industry. The addition of synergistic reagents with high efficiency to improve the inhibition performance of KHIs is of great significance for the prevention and treatment of hydrates.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Review
Chemistry, Multidisciplinary
Ihtisham Ul Haq, Ali Qasim, Bhajan Lal, Dzulkarnain B. Zaini, Khor Siak Foo, Muhammad Mubashir, Kuan Shiong Khoo, Dai-Viet N. Vo, Eric Leroy, Pau Loke Show
Summary: The formation of gas hydrates is a significant issue in oil and gas pipelines, as they cause blockage and disrupt normal flow. Injecting ionic liquids as hydrate inhibitors is a solution, and imidazolium-based ionic liquids have been found effective. These inhibitors act as thermodynamic inhibitors, hydrate inhibitors, and anti-agglomerates.
ENVIRONMENTAL CHEMISTRY LETTERS
(2022)
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
Energy & Fuels
Amir Saberi, Abdolmohammad Alamdari, Ali Rasoolzadeh, Amir H. Mohammadi
Summary: This study investigated the impact of three chemicals at different concentrations on gas hydrate formation, and identified the optimal choices. Furthermore, the combination of PVP and MEG in an aqueous solution was found to have a simultaneous synergistic impact on both natural gas hydrate formation induction time and the rate of gas consumption.
Article
Chemistry, Applied
Lin Han, Huiqing Wang, Junwei Cao, Yunlong Li, Xiying Jin, Caian He, Min Wang
Summary: Tartary buckwheat hull acetone extract demonstrated the best inhibition of α-glucosidase, while myricetin and quercetin were identified as the most effective inhibitors. These compounds exhibited strong inhibitory activity against α-glucosidase.
Article
Biochemistry & Molecular Biology
Mario R. C. Soromenho, Anastasiia Keba, Jose M. S. S. Esperanca, Mohammad Tariq
Summary: In this study, two thiouronium-based ionic liquids were tested for their ability to affect the formation and growth of CO2 and THF hydrates. It was found that these ionic liquids act as thermodynamic inhibitors and suppress the equilibria of CO2 hydrate formation. The study also emphasizes the importance of the methods and conditions used to screen additives for altering hydrate formation and growth.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Energy & Fuels
Ajay Suri, Ankur Singh
Summary: This paper investigates the synergy between three kinetic hydrate inhibitors (KHIs) and a common solvent. The results show that the performance of the inhibitors is greatly enhanced when blended with the solvent, with the best performance achieved within a certain concentration range. The blends outperform the individual inhibitors and are environmentally friendly.
Article
Energy & Fuels
Ankur Singh, Ajay Suri
Summary: Before injecting any kinetic hydrate inhibitor (KHI) into a flow line, it is necessary to dissolve the KHI, which is usually a polymer, in a suitable solvent such as water, methanol, or glycol. This study investigates the synergistic effect of three KHIs (PVP, PVCap, and Pectin) with monoethylene glycol (MEG) as the solvent. The results show that blending MEG with the KHIs significantly enhances hydrate inhibition, with Pectin-MEG blend demonstrating the best performance.
Article
Energy & Fuels
Yue Zhang, Zhi Li, Xiaodeng Yang, Tianduo Li
Summary: In recent years, the study of natural polymer products, such as methane hydrate inhibitors, has gained increasing attention in scientific research. This study successfully synthesized four chitosan derivatives and compared their methane hydrate inhibition effects with chitosan (CS) and carboxymethyl chitosan (CMCS). It was found that chitosan with high hydrophobicity effectively prevented the formation of methane hydrates, while the inhibition effect of CMCS could be improved by introducing specific chemical groups. This work provides inspiration for the further development of efficient and environmentally friendly kinetic hydrate inhibitors.
Article
Oncology
Tianshu Ren, Hui Jia, Qiong Wu, Yan Zhang, Qun Ma, Dong Yao, Xudong Gao, Danni Xie, Zihua Xu, Qingchun Zhao, Yingshi Zhang
Summary: This study suggests that renin-angiotensin system inhibitors (RASIs) combined with bevacizumab (Bev) have a synergistic effect in the treatment of colorectal cancer. The combination treatment improves overall survival (OS) and progression-free survival (PFS) in patients. RASIs may also be an optimal choice for the treatment of Bev-induced hypertension.
FRONTIERS IN ONCOLOGY
(2022)
Article
Environmental Sciences
Adeel ur Rehman, Abdulrab Abdulwahab, Asrajjit Kaur, Muhammad Saad Khan, Dzulkarnain B. Zaini, AzmiB. M. Shariff, Bhajan Lal
Summary: This study investigates the effect of Diethylene glycol (DEG) and Glycine (Gly) mixtures on the formation of carbon dioxide hydrates through experimental and modeling methods. The findings suggest that the mixture can inhibit hydrate formation at certain concentrations, with the best results observed at 15 wt% concentration of DEG and Gly. Additionally, a freezing point model is applied to predict hydrate data, and the results show satisfactory agreement with experimental results.
Article
Energy & Fuels
Yulia F. Chirkova, Andrey S. Stoporev, Roman S. Pavelyev, Mikhail A. Varfolomeev
Summary: In recent years, interest in gas hydrates has grown due to their potential as an energy source and environmentally friendly alternative to storing and transporting natural gas. This study compared the effectiveness of sulfonated castor oil (SCO) and sodium dodecyl sulfate (SDS) as promoting reagents in the formation and decomposition of methane and methane-propane hydrates in a porous medium. The results showed that SCO significantly improved the water conversion rate in methane hydrates due to enhanced mass transfer in the presence of surfactants, while the effect on methane-propane hydrates was limited. Both SCO and SDS accelerated hydrate formation, but SCO required less supercooling. These findings suggest that SCO is comparable to SDS in promoting activity in porous media with varying water saturation.
Article
Crystallography
Masomeh Asadi, Kiana Peyvandi, Farshad Varaminian
Summary: The most important aim of this study is to investigate the surface effect on THF/H2O hydrate formation using the volumetric method. The results show that developing a hydrophilic surface significantly increases the rate of THF hydrate formation. This study provides a new perspective on the relationship between surface structure and the kinetics of THF/H2O hydrate formation.
JOURNAL OF CRYSTAL GROWTH
(2022)
Article
Biophysics
Xiaohui Feng, Shaokun Zhang, Hong Wu, Xia Lou
COLLOIDS AND SURFACES B-BIOINTERFACES
(2015)
Article
Engineering, Chemical
Xiaohui Feng, Xia Lou
SEPARATION AND PURIFICATION TECHNOLOGY
(2015)
Review
Energy & Fuels
Hossein Dashti, Leonel Zhehao Yew, Xia Lou
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2015)
Article
Biophysics
Kunal Patel, Behin Sundara Raj, Yan Chen, Xia Lou
COLLOIDS AND SURFACES B-BIOINTERFACES
(2016)
Article
Chemistry, Analytical
Ghazaleh Pourfallah, Xia Lou
SENSORS AND ACTUATORS B-CHEMICAL
(2016)
Article
Energy & Fuels
Lin Ding, Bohui Shi, Jiaqi Wang, Yang Liu, Xiaofang Lv, Haihao Wu, Wei Wang, Xia Lou, Jing Gong
Article
Energy & Fuels
Bo-Hui Shi, Liang Yang, Shuan-Shi Fan, Xia Lou
Article
Chemistry, Applied
Ghazaleh Pourfallah, Xia Lou
Article
Biotechnology & Applied Microbiology
Ela Eroglu, Risa S. Wijihastuti, Elizabeth Grenik, Ashiwin Vadiveloo, Navid R. Moheimani, Xia Lou
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2018)
Article
Engineering, Chemical
Shuanshi Fan, Liang Yang, Yanhong Wang, Xuemei Lang, Yonggang Wen, Xia Lou
CHEMICAL ENGINEERING SCIENCE
(2014)
Article
Engineering, Chemical
Bo-Hui Shi, Shuan-Shi Fan, Xia Lou
CHEMICAL ENGINEERING SCIENCE
(2014)
Article
Thermodynamics
Fengyuan Zhang, Xiaolin Wang, Xia Lou, Wojciech Lipinski
Summary: This study investigated the effects of anionic surfactant SDS and cationic surfactant DTAC on the kinetics of CO2-TBAB hydrate formation and found that adding SDS can accelerate hydrate formation, while the best CO2 separation performance is achieved in the presence of DTAC.
Proceedings Paper
Energy & Fuels
Hossein Dashti, Xia Lou
ENERGY TECHNOLOGY 2018: CARBON DIOXIDE MANAGEMENT AND OTHER TECHNOLOGIES
(2018)
Article
Biophysics
Kunal Patel, Behin Sundara Raj, Yan Chen, Xia Lou
COLLOIDS AND SURFACES B-BIOINTERFACES
(2017)
