Article
Chemistry, Multidisciplinary
Yujiang Li, Chuanxian Li, Zhiqi Zhao, Wei Cai, Xue Xia, Bo Yao, Guangyu Sun, Fei Yang
Summary: This study investigates the effects of test temperature and asphaltene concentration on the stability of water-in-waxy crude oil emulsions. The results indicate that dissolved-state wax facilitates the adsorption of asphaltenes and enhances the interfacial properties, while wax crystals form a network structure and immobilize water droplets, thus improving the stability of the emulsions.
Article
Energy & Fuels
M. Daniela Contreras-Mateus, Francisco H. Sanchez, Diana M. Canas-Martinez, Nashaat N. Nassar, Arlex Chaves-Guerrero
Summary: This article investigates the adsorptive phenomena of nanomaterials and asphaltenes, focusing on magnetite nanoparticles/asphaltene systems and the effect of resins as stabilizing colloidal agents. The results show rapid asphaltene adsorption following the external mass transfer model and equilibrium adsorption described by the monolayer Langmuir model. The research also discovered that the adsorbed asphaltenes create a steric repulsive barrier between particles, reducing interaction intensity.
Review
Energy & Fuels
Umer Farooq, Amit Patil, Balram Panjwani, Galina Simonsen
Summary: Nanotechnology is widely recognized for its significant applications in the oil and gas industry, particularly in the separation of water and oil and purification of produced water. Selective adsorption and magnetic action can improve emulsion separation efficiency.
Article
Energy & Fuels
Peter L. Perez, Jenee' N. Zaragoza, Nimeshkumar K. Patel, Michael A. Dion
Summary: The use of crude stabilizers is an important chemical tool for refining unstable crude oil blends. Research has found that the ability of crude stabilizers to enhance demulsifier activity is mainly related to reducing interfacial viscosity rather than inhibiting asphaltenes. Interfacial dilatational experiments can capture the synergistic interactions between demulsifiers and certain crude stabilizers, making it a useful tool for selecting the best demulsifier/crude stabilizer combination.
Article
Chemistry, Physical
Ronald Nguele, Kyuro Sasaki
Summary: The study found that asphaltenes have a stronger affinity with silica-based nanofluid film compared to sandstone wetted with base fluid, resulting in a four-fold lower adsorption. The adsorption of asphaltenes decreases with the decrease in polymer concentration. The size of asphaltene molecules' aromatic core affects their diffusion and adsorption, while an increase in the ratio of heteroatom-to-total carbon enhances their affinity with the nanofluid film.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Engineering, Chemical
Xiaoxiao Li, Xiang'an Yue, Jirui Zou, Rongjie Yan
Summary: This study proposes a novel method for evaluating emulsion generation and stability in oil-water systems and designs a new instrument for visualizing emulsion presence and separation. Quantitative methods accurately assess emulsification capability and emulsion stability, and distinguish differences between different oil-water samples. These parameters are of great significance for enhancing oil recovery.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Engineering, Petroleum
Davi Costa Salmin, Jose Delgado-Linares, David T. Wu, Luis E. Zerpa, Carolyn A. Koh
Summary: Some crude oils contain natural surfactants that prevent hydrate agglomeration, which is linked to the aggregation state of asphaltenes. Artificially modifying the aggregation state of asphaltenes can alter the natural hydrate antiagglomeration properties of crude oils. This finding could have implications for novel hydrate management strategies that utilize the intrinsic antiagglomerant properties of certain crude oils.
Review
Energy & Fuels
Murray R. Gray, Harvey W. Yarranton, Martha L. Chacon-Patino, Ryan P. Rodgers, Brice Bouyssiere, Pierre Giusti
Summary: The molecules in petroleum asphaltenes form nanoaggregates in solution with debated size distribution, impacting phase behavior, physical properties, and processing of heavy petroleum fractions. The molecular weight ranges high with sizes below 100 nm, and large aggregates play a significant role in phase separation and emulsion stabilization. Average properties of asphaltene fraction can predict phase separation, gravity segregation, and other properties.
Article
Multidisciplinary Sciences
Mohammadjavad Fazeli, Mehdi Escrochi, Zohreh Sadat Hosseini, Behzad Vaferi
Summary: Asphaltene often causes issues in crude oil transportation and processing equipment. This research investigates the impact of angular frequency and n-heptane concentration on asphaltene precipitation and rheological behavior. The results suggest that optimizing the angular frequency and n-heptane concentration can reduce asphaltene content and viscosity.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Multidisciplinary
Farhad Bohlooli Shaafi, Alireza Motavalizadehkakhky, Rahele Zhiani, Seyed Mohammad Mahdi Nouri, Malihesadat Hosseiny
Summary: In this study, a highly efficient recyclable adsorbent for removing asphaltene from crude oil was developed by immobilizing sulfated zirconium oxide on magnetite KCC-1 nanoparticles. The adsorbent showed a synergistic effect between different components and could be recovered after each adsorption by acid treatment without significant reduction in activity.
Article
Energy & Fuels
Ivan Moncayo-Riascos, Christian Guerrero-Benavides, Juliana Giraldo, Oscar Ramirez-Jaramillo, Fernando A. Rojas-Ruiz, Jorge A. Orrego-Ruiz, Cristiam Cundar, Wilson A. Canas-Marin, Raul Osorio Gallego
Summary: A machine learning-based classification model and a linear regression model were proposed in this study to predict the risk of asphaltene damage and the asphaltene onset pressure. Through experimental evaluation and comparison, the accuracy and effectiveness of these models were demonstrated. The integrated model contributes to predicting and preventing the decline in oil production caused by asphaltene precipitation.
Article
Chemistry, Multidisciplinary
Yun Lei, Pengfei Yu, Wenqiang Ni, Haoping Peng, Yang Liu, Xiaofang Lv, Huijun Zhao
Summary: This study investigates the impact of asphaltene precipitation on the crystallization and gelation behaviors of mixed crude oil through experimental methods. It reveals that the precipitation of asphaltenes significantly affects the crystallization and gelation processes of crude oil, which is crucial for the technological development of oil and gas flow assurance.
Article
Energy & Fuels
Anastasiya Y. Yadykova, Sergey O. Ilyin
Summary: This article studies and analyzes the morphological features, thermophysical properties, and rheology of bio-oil in comparison with light and heavy crude oils. The study demonstrates that bio-oil is a water-in-oil emulsion, light crude oil is a suspension of paraffin waxes in oil medium, and heavy crude oil is a homogeneous liquid. The article also explores the blends of bio-oil with fossil oils and their miscibility, showing that macroscopically compatible blends are formed only when heavy crude oil is mixed with bio-oil at a low content of the latter.
Article
Chemistry, Physical
Fatemeh Mahmoudi Alemi, Seyed Ali Mousavi Dehghani, Alimorad Rashidi, Negahdar Hosseinpour, Saber Mohammadi
Summary: The study showed that the synthesized MWCNT-Fe2O3 nanocomposite can effectively control the precipitation and aggregation of asphaltene, improving the stability and flow properties of crude oil.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Applied
O. Morelos-Santos, A. I. Reyes de la Torre, P. Schacht-Hernandez, B. Portales-Martinez, I. Soto-Escalante, A. M. Mendoza-Martinez, R. Mendoza-Cruz, J. Jesus Velazquez-Salazar, M. Jose-Yacaman
Summary: In this study, the effect of NiFe2O4 nanoparticles as catalysts in heavy crude oil upgrading under low hydrogen/feedstock ratio was investigated. The experiments showed that the nanoparticles significantly improved the efficiency of heavy oil upgrading.
Article
Energy & Fuels
Ivan Moncayo-Riascos, Oscar E. Medina, Farid B. Cortes, Camilo A. Franco
Summary: Molecular dynamics simulations successfully reproduced experimental results and a machine learning model was proposed to predict the thermal-oxidative behavior of polycyclic aromatic hydrocarbons (PAHs). The ML model had a high coefficient of determination and can be applied to optimize the transformation of PAHs.
Article
Energy & Fuels
Lady J. Giraldo, Oscar E. Medina, Viviana Ortiz-Perez, Camilo A. Franco, Farid B. Cortes
Summary: This study proposes a modified CCS process using silica nanoparticle inclusion for shallow CBM reservoirs. By doping rice husk silica nanoparticles with urea, diethylamine, triethylamine, and ethylenediamine, the CO2 sorption capacity can be significantly enhanced. The best results were achieved with 3% of ethylenediamine-doped nanoparticles, which increased the CO2 sorption capacity by over 1000%.
Article
Energy & Fuels
Bryan X. Medina, Arjun Kohli, Anthony R. Kovscek, Vladimir Alvarado
Summary: Characterizing the pore structures and transport properties of low-permeability shales is critical for evaluating these formations as potential seals or storage sites for geological CO2 sequestration. The study used low-pressure gas adsorption and nuclear magnetic resonance (NMR) techniques to characterize the pore-size distribution of shales before and after injection of supercritical CO2. Results showed that supercritical CO2 injection alters the pore-size distribution for pore sizes <1 nm to 1 mm, providing insights on the evolution of pore structure and mass transport properties during storage of supercritical CO2 in different shale lithologies.
Article
Energy & Fuels
Bryan X. Medina-Rodriguez, Laura Frout, Vladimir Alvarado, Anthony R. Kovscek
Summary: This research investigates the influence of pH values of hydraulic fracturing fluids on the pore architecture of shale formations. The study examines the role of both minerals and organic components in alkaline stimulation and their impact on pore structure. The results demonstrate that pH values have significant effects on mineral dissolution and changes in organic matter, which in turn affect pore architecture.
Article
Chemistry, Multidisciplinary
Daniel Lopez, Nicolas M. Chamat, Dahiana Galeano-Caro, Liliana Paramo, Diego Ramirez, David Jaramillo, Farid B. Cortes, Camilo A. Franco
Summary: The objective of this study is to evaluate the role of nanoparticles with different chemical structures in completion fluids (CF) in providing a positive dual effect for well stimulation and clay swelling damage inhibition. The adsorption isotherms show different degrees of affinity, which impacts on the reduction of the interfacial tension between the CF and the reservoir fluids. Fluid-fluid interactions based on interfacial tension (IFT) measurements suggest that positively charged nanoparticles exhibit high IFT reductions. According to the capillary number, certain nanoparticles have a higher capacity to reduce both interfacial and surface restrictions for crude oil production, suggesting that completion fluid with nanoparticles (NanoCF) can function as a stimulation agent.
Article
Energy & Fuels
Gustavo Maya, Aurora L. Carreno Otero, Fabian L. Monares Bueno, Arnold R. Romero Bohorquez, Farid B. Cortes, Camilo A. Franco, Eduardo Manrique
Summary: Recent studies have identified wettability alteration as the primary consequence of adjusted brine composition water flooding (ABCW) and low-salinity water flooding (LSW). However, further research is needed to provide a phenomenological explanation and clarify the key components of the system (rock-oil-brine). This study focuses on determining the relevant variables for smart water effects by conducting static (contact angles) and dynamic tests (coreflooding). The results show that oil-brine ion exchange plays a significant role in explaining observed displacement efficiencies and pressure differentials.
Article
Energy & Fuels
Camilo A. Franco, Karol Zapata, Liliana Paramo, Paola Garzon, Diego Ramirez, David Jaramillo, Farid B. Cortes
Summary: The objective of this research was to develop and incorporate nanodetectors (NDs) in drilling fluids to identify the contribution of different producing zones in naturally fractured carbonate reservoirs. Novel nanocapsules based on carbon quantum dots (CQDs) were synthesized to interact with crude oil and release an active compound for fluorescence emission. NDs with sizes smaller than 75 nm were found to be compatible with reservoir fluids and demonstrated effectiveness in detecting naturally fractured zones in evaluated wells.
Article
Energy & Fuels
Karol Zapata, Ivan Moncayo-Riascos, Santiago Cespedes, Andres Aguirre-Giraldo, Laura M. Corredor, Henderson Quintero, Eduardo Manrique, Farid B. Cortes, Rafael Ribadeneira, Camilo A. Franco
Summary: This study aimed to develop SiO2 nanoparticles functionalized with amine to inhibit the chemical degradation of partially hydrolyzed polyacrylamide (HPAM) in the presence of different ionic species. The effects of SiO2/amine on the rheological behavior of HPAM solution were evaluated in the presence of monovalent, divalent, and trivalent cations. Molecular simulations showed that the self-folding of HPAM chains increased in brine containing trivalent cations, leading to viscosity loss. The presence of SiO2/amine increased the radius of gyration of the polymer, improving the viscosity of the HPAM solutions. This study opens up possibilities in nanotechnology for enhancing polymer flooding in the oil industry.
Article
Engineering, Chemical
Alirio Benavides, Carlos Zapata, Pedro Benjumea, Camilo A. Franco, Farid B. Cortes, Marco A. Ruiz
Summary: Petroleum-derived gasoline is the most widely used automotive fuel, and its antiknock performance is evaluated using the octane number (ON). Standard methods for measuring ON are expensive and not suitable for field monitoring or online analysis. This study aims to develop and evaluate three empirical methods for predicting ON using MIR spectra, GC-MS, and routine test data.
Article
Energy & Fuels
Vahideh Mirchi, Morteza Dejam, Vladimir Alvarado, Morteza Akbarabadi
Summary: This study is one of the first to experimentally investigate hydrogen storage in oil-wet Berea sandstones under elevated temperature and pressure conditions. The findings show that adding methane (CH4) significantly enhances hydrogen storage and recovery.
Article
Chemistry, Multidisciplinary
Daniel Lopez, As A. Rios, Juan D. Marin, Richard D. Zabala, Jaime A. Rincon, Sergio H. Lopera, Camilo A. Franco, Farid B. Cortes
Summary: This study investigates the effect of adding SiO2 nanoparticles on the performance of two commercial wax inhibitor treatments in wax formation and crystallization. The results show that NanoWT with 100 mg·L-1 nanoparticle dosage can effectively reduce the wax appearance temperature and inhibit wax deposition, ensuring flow assurance in unfavorable environments.
Article
Nanoscience & Nanotechnology
Oscar E. Medina, Ivan Moncayo-Riascos, Camilo A. Franco, Farid B. Cortes
Summary: This study aims to expand our understanding of the pyrolysis and catalytic pyrolysis of asphaltenes at low and high pressure through experimental and simulation approaches. The experiments showed that asphaltene reactivity decreases and coke deposition increases with increasing pressure. Catalytic pyrolysis experiments demonstrated that coke is not produced in the high-temperature region, regardless of the system pressure. Molecular dynamic calculations confirmed that asphaltenes mainly react in the high-temperature region and the reaction rate is negatively affected by increasing pressure.
ACS APPLIED NANO MATERIALS
(2023)
Article
Energy & Fuels
Y. Li, E. J. Manrique, A. R. Kovscek
Summary: This study predicts the propagation of the combustion front and the effect of thermally induced stress in in-situ combustion projects. Through experiments and numerical simulations, it demonstrates the effectiveness of this method in underground reservoirs and its potential for monitoring the position of the combustion front and surface movements.
SPE RESERVOIR EVALUATION & ENGINEERING
(2023)
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.