Article
Energy & Fuels
Richard Djimasbe, Mikhail A. Varfolomeev, Ameen A. Al-Muntaser, Chengdong Yuan, Dmitriy A. Feoktistov, Muneer A. Suwaid, Alexey J. Kirgizov, Rustam R. Davletshin, Almaz L. Zinnatullin, Saar D. Fatou, Ranel Galeev, Ilfat Z. Rakhmatullin, Michael Kwofie, Vladimir V. Klochkov, Konstantin Yu Prochukhan
Summary: Using a nickel-based oil-dispersed catalyst can enhance the upgrading of heavy oil in supercritical water, increasing the yield of upgraded oil, reducing the yield of gases and coke, and improving the quality of the upgraded oil as well as reducing the pollution in the wastewater.
Article
Chemistry, Applied
Yu Dong, Qiuyang Zhao, Yantao Zhou, Lichen Zheng, Hui Jin, Baercheng Bawaa, Liejin Guo
Summary: Supercritical water is a promising method for upgrading heavy oil to produce light oil and gas. This study conducted experiments in a batch reactor to analyze the reaction pathways and the role of supercritical water in the upgrading process. The products were classified into gas, coke, and liquid products, which were further separated into saturates, aromatics, resins, and asphaltenes. A kinetic model was developed to explain the effects of supercritical water solubility on heavy oil upgrading, and it successfully fit the experimental data. The supercritical water upgrading process was divided into three stages: pre-induction primary cracking stage, post-induction primary cracking stage, and gas generation stage. This study provides a comprehensive understanding of the mechanism of heavy oil upgrading in supercritical water.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Zhong Chen, Kun Tong, Chunlan He, Ming Xue, Chong Lyu, Hongzhen Chen, Qiao Chen, Yuanjian Xu
Summary: In this study, near-/supercritical water was utilized as a green medium for extracting and upgrading heavy oil from oil-based drill cuttings. The addition of industrial wastes such as nickel-rich electroplating sludge showed promising catalytic effects in improving the quality of the recovered oil. The active components in these wastes, such as metallic oxides and ferrite, played a crucial role in the upgrading reactions, resulting in high quality oil with zero asphaltene and extremely low heteroatom content.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Applied
J. J. Li, Gui-zhong Deng, Xiao-dong Tang, Jian-wei Wang, Chen Yang, Si-hao Ling
Summary: This paper proposes a combination method of algae hydrothermal liquefaction with heavy oil upgrading and viscosity reduction process, which enriches the supply path of active hydrogen by using the liquefaction products of hydrothermal liquefaction to provide hydrogen to the heavy oil upgrading and viscosity reduction process. The experimental results show that using the hydrothermal liquefaction products can significantly improve the viscosity reduction rate and quality improvement of heavy oil.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Engineering, Chemical
Zujie Huang, Qiuyang Zhao, Lei Chen, Liejin Guo, Yan Miao, Yechun Wang, Hui Jin
Summary: The proposed technology of CO2- and N2-assisted supercritical water injection can enhance heavy oil recovery and improve oil quality.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Energy & Fuels
Alcides Simao, Enrique Dominguez-Alvarez, Chengdong Yuan, Muneer A. Suwaid, Mikhail A. Varfolomeev, Jorge Ancheyta, Omar F. Al-mishaal, Sergey Kudryashov, Igor S. Afanasiev, Dmitry A. Antonenko, Oleg Petrashov, Kirill A. Dubrovin
Summary: This article provides a comprehensive review of the application of different metal-based nanoparticles for upgrading heavy oils. The focus is on the catalysts used for in-situ upgrading, using various thermal treatment methods. Different types of catalysts have been identified, but due to their diversity and variations in evaluation conditions, a direct comparison of their performance is not possible. The literature reviewed indicates the need for further research in order to develop more effective catalysts for increasing recovery factor and permanent upgrading of heavy and extra-heavy oil quality.
Article
Materials Science, Multidisciplinary
Mohammed H. Mohammed, Saba A. Gheni, Khaleel I. Hamad, Awad E. Mohammed, Hassan M. Hmood, Marwan A. Mahomood, Hiba R. Mohammed, Zainab T. Abdulwahab, Safaa M. R. Ahmed, Ahmed A. Hassan
Summary: Upgrading unconventional heavy crude oil using supercritical water process catalyzed by biowaste catalysts can reduce sulfur content and molecular weight, improve API gravity and reduce viscosity of the upgraded petroleum light fraction, without the need for an external hydrogen source.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Energy & Fuels
Haoming Ma, Yun Yang, Zhangxin Chen
Summary: With the depletion of conventional oil, unconventional oil, especially heavy oil, is being extracted to meet the increasing demand for crude oil worldwide. Steam injection has been considered as one of the most effective thermal recovery processes, but it is energy-intensive and not environmentally friendly. Supercritical water flooding (SCWF) has been experimentally proven to be a more effective process than steam injection, but it has not been field-proven yet. This paper presents a numerical simulation workflow for SCWF and studies its sensitive parameters based on simulation outputs, showing that SCWF has a better performance with higher recovery efficiency compared to steam injection.
Article
Engineering, Chemical
Ashwin Raghavan, Ping He, Ahmed F. Ghoniem
Summary: A two-phase stirred reactor model was developed for heavy oil upgrading in the presence of supercritical water, demonstrating the inference of oil and water phase kinetics parameters for a compact lumped reaction kinetics scheme. The study found that although supercritical water can suppress the formation of newer polynuclear aromatics (PNA) from distillate range species, it is broadly ineffective in deterring the combination of pre-existing PNA fragments in the oil feed.
Article
Green & Sustainable Science & Technology
Kyoung S. Ro, Michael A. Jackson, Ariel A. Szogi, David L. Compton, Bryan R. Moser, Nicole D. Berge
Summary: This study compared the hydrothermal carbonization (HTC) of hen and swine manures at different temperatures and found that higher temperatures resulted in less volatile matter, more fixed carbon, and increased stability of the produced hydrochar. Further research is needed to investigate the effects of carbonization temperatures on plant growth and soil emissions.
Article
Chemistry, Physical
Eduardo Falabella Sousa-Aguiar, Carolina Zanon Costa, Maria Antonieta Peixoto Gimenes Couto, Debora de Almeida Azevedo, Jose Faustino Souza de Carvalho Filho
Summary: This study demonstrates the thermal deoxygenation of palm residue under sub- and supercritical water conditions using Raney nickel catalyst, which showed high selectivity for bio-kerosene and diesel without the need for external hydrogen supply. The best results were achieved at 390 degrees C, 10wt.% catalyst load, and 3.5 hours of reaction time. The Raney nickel catalyst promoted decarboxylation and/or decarbonylation reactions over hydrodeoxygenation reaction.
Review
Environmental Sciences
Oraleou Sangue Djandja, Linxin Yin, Zhicong Wang, Yao Guo, Xiaoxiao Zhang, Peigao Duan
Summary: Duckweed processing has been recognized as a promising pathway for biofuels production due to its simple harvesting method and high protein or starch content. Biofuels production from duckweed not only addresses energy and environmental issues, but also promotes the effective utilization of duckweed. This critical review focuses on producing bio-oil from duckweed via pyrolysis and hydrothermal liquefaction processes, and discusses the impacts of various parameters on bio-oil properties and distribution.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Energy & Fuels
Nicolas Bueno, Juan M. Mejia
Summary: Thermal techniques are successful in heavy oil production, and nanotechnology has provided an opportunity to enhance thermal EOR methods through in-situ upgrading. This study presents a rigorous mathematical description of in-situ upgrading, allowing for a thermodynamic description of complex mixtures. The model can be used to design a field-scale deployment strategy for increasing recoverable reserves and improving the quality of upgraded oil.
Article
Engineering, Chemical
Temurali Kholmurodov, Oybek Mirzaev, Boudkhil Affane, Arash Tajik, Ksenia Romanova, Yuriy Galyametdinov, Aleksey Dengaev, Alexey Vakhin
Summary: The study aims to enhance the quality of heavy oil through refinement using aquathermolysis with the simultaneous injection of steam and thermally stable nonionic surfactants (NS). The synthesized NS R-PPG was characterized using infrared (IR) methods, and its thermal stability was investigated. The study investigated the hydrothermal upgrading of heavy oil with a catalyst, involving the joint participation of steam and surfactants at a temperature of 250°C, and evaluated the improved oil characteristics resulting from the experimental process. The incorporation of surfactants during hydrothermal upgrading resulted in an irreversible reduction in the viscosity of heavy oil, thereby enhancing its overall quality.
Article
Chemistry, Physical
Richard Djimasbe, Ildar R. Ilyasov, Michael Kwofie, Mohammed A. Khelkhal, Dmitrii A. Emelianov, Ameen A. Al-Muntaser, Muneer A. Suwaid, Mikhail A. Varfolomeev
Summary: The production of hydrogen from unconventional oil is an important area of research in the energy field, and this study focuses on synthesizing and applying promising catalysts based on nickel, cobalt, and nickel-cobalt alloys for hydrogen production from extra-heavy crude oil in the Tahe Oil Field in China. The results show that the presence of a catalyst, especially the Ni-CoAl2O3 catalyst, significantly increases the rate of hydrogen generation. Additionally, the use of supercritical water improves the yield and quality of upgraded oil.
Article
Energy & Fuels
Alexis Tirado, Guillermo Felix, Ameen A. Al-Muntaser, Mohamed Said Chemam, Chengdong Yuan, Mikhail A. Varfolomeev, Jorge Ancheyta
Summary: Despite significant efforts to understand the reaction mechanism of asphaltenes during aquathermolysis reaction, knowledge about their molecular structures and reaction pathways remains limited. This work extensively reviews and discusses experimental results from different samples of asphaltenes during aquathermolysis reaction to obtain information on their elemental composition, functional groups, and average structural parameters. The findings provide theoretical support for future research on the aquathermolysis of heavy crude oils with various catalysts and highlight the impact of operating conditions, catalyst type, and asphaltene structure on the changes in asphaltenes.
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.
Review
Energy & Fuels
Abdolreza Farhadian, Azam Shadloo, Xin Zhao, Roman S. Pavelyev, Kiana Peyvandi, Zhengsong Qiu, Mikhail A. Varfolomeev
Summary: Gas hydrate formation is a serious challenge for the oil and gas industry, causing safety, environmental, and economic problems. Current kinetic hydrate inhibitors (KHIs) are not biodegradable, cheap, and eco-friendly. This report reviews efforts to develop KHIs with higher biodegradability and emphasizes the need for cheaper and greener options.
Article
Engineering, Chemical
Alexis Tirado, Guillermo Felix, Muneer A. Suwaid, Ameen A. Al-Muntaser, Dmitry A. Antonenko, Igor S. Afanasiev, Mikhail A. Varfolomeev, Chengdong Yuan, Jorge Ancheyta
Summary: Oil-soluble catalysts have been found to improve the flow properties of heavy crude oil during steam injection processes. In order to better understand the effects and reaction mechanisms of these catalysts, further studies using complex kinetic models are needed. This study investigated the catalytic effect of copper oleate on aquathermolysis of heavy crude oil, and developed a kinetic model to predict the yield of different fractions and gases. The results showed that copper oleate reduces polyaddition reactions of heavy fractions and favors the production of lighter compounds.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Biochemistry & Molecular Biology
Ilnaz Rakipov, Aydar Akhmadiyarov, Artem Petrov, Artashes Khachatrian, Boris Solomonov
Summary: The paper presents the investigation on intermolecular interactions between alanine and sarcosine anhydride in organic solvents. IR spectroscopy was used to measure the absorption frequencies of cyclic dipeptide in solvents. The impact of Van der Waals interactions and solvent hydrogen bonding on the absorption frequencies of anhydrides' C=O group is discussed. The spectroscopic parameters for C=O...H-O hydrogen bonding complexes between anhydride and methanol are obtained.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biochemistry & Molecular Biology
Peter Balis, Andrea Berenyiova, Anton Misak, Marian Grman, Zuzana Rostakova, Iveta Waczulikova, Sona Cacanyiova, Enrique Dominguez-Alvarez, Karol Ondrias
Summary: Phthalic selenoanhydride, when dissolved in physiological buffer, releases various reactive selenium species including H2Se. It is a potential compound for selenium supplementation and exerts various biological effects, although its effect on the cardiovascular system is still unknown. This study aimed to investigate the effects of R-Se on rat hemodynamic parameters and vasoactive properties in isolated arteries, and the results suggest that R-Se acts on vascular smooth muscle cells, which may explain its effects on rat hemodynamic parameters.
Article
Biochemistry & Molecular Biology
Pawel Zagrodzki, Agnieszka Wiesner, Monika Marcinkowska, Marek Jamrozik, Enrique Dominguez-Alvarez, Katarzyna Bierla, Ryszard Lobinski, Joanna Szpunar, Jadwiga Handzlik, Agnieszka Galanty, Shela Gorinstein, Pawel Pasko
Summary: Due to selenium deficiency in humans, the search for new organic molecules containing this element in plant biofortification is important. This study evaluated selenium organic esters based on benzoselenoate scaffolds, with additional halogen atoms and various functional groups. The study aimed to discover the relationships between molecular characteristics of these compounds and the amount of sulfur phytochemicals in kale sprouts. The statistical model revealed a correlation structure between the molecular descriptors of selenium compounds and the biochemical features of the sprouts.
Article
Pharmacology & Pharmacy
Balint Racz, Annamaria Kincses, Krisztian Laczi, Gabor Rakhely, Enrique Dominguez-alvarez, Gabriella Spengler
Summary: Recently, the anticancer activity of symmetrical selenoesters was investigated in sensitive and resistant human colon adenocarcinoma cells. The compounds showed synergistic interaction with doxorubicin and exhibited ABCB1 inhibitory and apoptosis-inducing effects. Transcriptome analysis revealed that symmetrical selenoesters may influence the redox state of cells and interfere with metastasis formation.
Article
Energy & Fuels
Wenlian Xiao, Jitian Ren, Wanfen Pu, Chengdong Yuan, Lingwei Meng, Lingli Zheng, Hui Zhao, Qianrui Cheng
Summary: Foam-assisted deoxidized-air flooding is a promising technique for improving oil recovery in low-permeability oil reservoirs. This study conducted laboratory experiments and field pilot analysis in a low-permeability oil reservoir in China to investigate the displacement mechanism of foam-assisted deoxidized-air flooding. The results showed that the gas-liquid ratio had different effects on oil recovery at different water cut stages, and the differences in oil recovery were linked to changes in the displacement mechanism.
Article
Energy & Fuels
Alexander V. Bolotov, Chengdong Yuan, Mikhail A. Varfolomeev, Usman H. Taura, Yahya M. Al-Wahaibi, Ilgiz F. Minkhanov, Vadim K. Derevyanko, Saif Al-Bahry, Sanket Joshi, Aidar R. Tazeev, Rail I. Kadyrov, Dmitrii A. Emelianov, Wanfen Pu, Ahmed Naabi, Majid Hasani, Rashid Said Al Busaidi
Summary: The idea of in-situ combustion (ISC) for oil shale development and conversion has been proposed recently. This work provides experimental evidence of the successful establishment and propagation of combustion front in fractured, low-permeability oil shale.
Article
Engineering, Chemical
Alexis Tirado, Guillermo Felix, Ameen A. Al-Muntaser, Chengdong Yuan, Mikhail A. Varfolomeev, Jorge Ancheyta
Summary: Steam-based technologies, particularly catalytic aquathermolysis, show great promise for increasing the recovery factor of heavy crude oil. This process requires proper experimentation to evaluate operational conditions, catalyst performance, and reaction kinetics. This study provides a comprehensive review of experimental results on diverse upgraded oil samples, discussing the effects of various reaction parameters and highlighting behaviors in gas production and viscosity reduction for future research and development. The reactivity of chemical compounds involved plays a significant role in crude oil upgrading, necessitating detailed analysis for experimental development and scale-up.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Thermodynamics
Sergey P. Verevkin, Arina V. Elbakari, Sergey V. Vostrikov, Ruslan N. Nagrimanov, Mikhail A. Varfolomeev
Summary: Alkyl benzoates, which are esters of benzoic acid, serve as important preservatives in the food and beverage industry. New synthesis pathways from renewable sources offer opportunities for their large-scale production and expand their applications to platform chemicals and hydrogen storage. The challenge lies in controlling selectivity and yield due to the multi-step production and conversion of alkyl benzoates. Thermochemical and thermophysical data play a crucial role in fine-tuning the distribution between thermodynamic and kinetic products. This study focuses on investigating the thermochemical properties of a homological series of alkyl benzoates and calculating the energetics of relevant chemical reactions for hydrogen storage.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2023)
Article
Chemistry, Physical
Shamil R. Akhmetshin, Radik A. Larionov, Alexander E. Klimovitskii, Polina Skvortsova, Aydar A. Akhmadiyarov, Sufia A. Ziganshina, Valery A. Gorbatchuk, Marat A. Ziganshin
Summary: The possibility of forming gels with a high-water content using Fmoc-dipeptides without mechanical actions or pH-switching was demonstrated. The formation of a colloid gel based on Fmoc-LL dipeptide was discovered for the first time. The effect of side substituents in Fmoc-dipeptides on their ability to form gels in DMSO/water systems was thoroughly studied, revealing a non-linear dependence on the size of side substituents.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Artem A. Petrov, Ekaterina A. Titova, Aydar A. Akhmadiyarov, Ilnaz T. Rakipov, Boris N. Solomonov
Summary: This work focuses on the thermochemistry of solvation of azeotropes. The enthalpies of dissolution of azeotropes in different mediums were determined, and the impact of the structure of the azeotropes on their properties in solution was discussed. A correlation between enthalpies of solvation and molar refraction was used to determine the vaporization enthalpies of azeotropes for the first time. The results were found to be consistent with literature data, obtained using direct and calculated methods. These findings contribute to the analysis of the structure-property relationships of azeotropes.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Richard Djimasbe, Mikhail A. Varfolomeev, Nailya M. Khasanova, Ameen A. Al-Muntaser, Rustam R. Davletshin, Muneer A. Suwaid, Gazinur Z. Mingazov
Summary: This study confirms the capability of supercritical water to generate active hydrogen that interacts with different fractions in unconventional feedstocks, leading to synthetic oil production during hydrothermal reactions. The findings suggest that a maximum yield of 16.78% can be achieved at a temperature of 380 oC and a reaction time of 1-12 hours.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)
