Article
Energy & Fuels
Azadeh Karevan, Hassan Sadeghi Yamchi, Maryam Aghajamali, Mohsen Zirrahi, Hassan Hassanzadeh
Summary: The automated SARA-HPLC system developed in this study utilizes three columns with different stationary phases and automated six-port switching valves to separate asphaltene, resins, and aromatics efficiently and accurately. The system's use of propane to sweep the carrier phase and the application of toluene for elution result in fast, cost-effective, repeatable, and precise analysis compared to current methods.
Article
Crystallography
Liang Yuan, Jinhong Chen, Jingxiang Zhang, Lingna Sun
Summary: Composite additives play a crucial role in the metal electrodeposition process and the quality of the deposited metal layer. This study investigated the effects of composite additives consisting of thiourea (TU), cetyltrimethyl ammonium chloride (CTAC), sodium dodecyl sulfate (SDS), and polyethylene glycol 20,000 (PEG20000) on the cyclic voltammetric behavior, electrochemical nucleation mechanism, crystallographic orientations, and surface morphology of nickel electrodeposition. The results showed that the introduction of composite additives led to stronger cathodic polarization, increased nucleation overpotential, and the formation of compact and smooth nickel deposits. The use of composite additives also resulted in smoother and finer nickel films. X-ray diffraction analysis revealed the presence of specific crystal planes when composite additives were used. The findings provide insights into the mechanisms and design of additives for metal nickel electrodeposition.
Article
Electrochemistry
D. Aranzales, I. Briliani, I. T. McCrum, J. H. O. J. Wijenberg, A. . C. A. . de Vooys, M. T. M. Koper
Summary: In this work, the adsorption behavior of naphthalene derivatives on gold electrodes and their effects on tin electrodeposition process were studied. It was found that NPT, NPTS, HNPTS, and ENSA formed different films with varying impact on tin electrodeposition. The presence of these films influenced the morphology and characteristics of tin deposits. The study also observed the incorporation of sulfur in the tin deposit due to the desulphonation process of NPTS, HNPTS, and ENSA.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Changxiao Cao, Shaohua Gu, Zhaojie Song, Zehui Xie, Xuya Chang, Pingping Shen
Summary: This study found that the interfacial adsorption of resins enhanced the emulsifying ability of crude oil and the film stability of W/O emulsion, heavily aggravating its viscosifying behavior.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Energy & Fuels
Jia Wu, Wen Qi, Fu-Jie Jiang, Qing-Yong Luo, Chun-Lin Zhang, Huan-Zhen Hu, Zi Wang, Qi-Sheng Ma, Yong-Chun Tang
Summary: The presence of sulfates can enhance the thermal decomposition of kerogen, leading to higher hydrocarbon yields at lower temperatures. This new reaction paradigm between sulfates and organic macromolecules offers useful guidance for exploring low-maturity oils.
Review
Environmental Sciences
Alexis Nzila, Musa M. Musa
Summary: This review discusses the current understanding of asphaltene and resin degradation, highlighting the lack of research compared to aliphatics and aromatics. It also points out the major gaps in knowledge and suggests new potential research areas for further exploration.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2021)
Article
Energy & Fuels
Z. R. Nasyrova, G. P. Kayukova, B. I. Gareev, V. P. Morozov, A. V. Vakhin
Summary: This paper discusses the effect of supercritical water on the conversion of resins, asphaltenes, and kerogens in rocks from different oilfields. The treatment leads to the decomposition of kerogens and the destruction of resins and asphaltenes, forming petroleum hydrocarbons. The conversion process involves detachment of alkyl substituents and changes in carbon chain structure.
Article
Chemistry, Physical
Jingling Lu, Cunying Xu, Jianru Li, Shuxian Wang, Qinqin Xiang, Xiao Chen, Yixin Hua, Yan Li
Summary: This study investigates the effects of nicotinic acid (NA) on the electrodeposition of Al-Mn alloy in aluminum chloride-1-butyl-3-methylimidazolium ionic liquids. It is found that the addition of NA increases the nucleation overpotential of Al-Mn alloy and inhibits the reduction reaction of Al(III) and Mn(II). The morphology, composition, roughness, and crystal structure of the alloy coating are strongly affected by the presence of NA.
Article
Energy & Fuels
G. R. Akhmetova, E. G. Tazeeva, S. G. Yakubova, P. I. Gryaznov, D. I. Tazeev, A. I. Feyzrakhmanov, L. E. Turabova
Summary: The study investigated the content and distribution of heteroatomic components in resins from heavy oils in Tatarstan and Samara regions. The group-structure composition of the isolated fractions from the resins was identified. Fractionation of the resin allowed for estimating the impact of heterorganic component on the flocculation of asphaltenes. Kinetic studies using UV spectroscopy revealed that the fraction of high-molecular organonitrogen bases efficiently inhibited the deposition of asphaltenes.
CHEMISTRY AND TECHNOLOGY OF FUELS AND OILS
(2023)
Article
Chemistry, Physical
Brayan F. Garcia, Soheil Saraji
Summary: This study examines interfacial rheology and polar component dynamics in crude oil and brine systems with different salinities. It reveals that diffusion/adsorption processes are the dominant relaxation mechanisms and transient interfacial rheology plays a crucial role in defining final apparent interfacial properties.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Energy & Fuels
Yun Lei, Han Wang, Shuang-Shuang Li, Xue-Qian Liu, Hao-Ran Zhu, Yu-Ming Gao, Hao-Ping Peng, Peng-Fei Yu
Summary: This study introduced the concept of the existence state of asphaltenes to investigate the precipitation and aggregation characteristics of asphaltenes. The influence of the existence state of asphaltenes on wax deposition was studied, and it was found that the dispersed asphaltenes promote wax deposition, while the aggregated asphaltenes can inhibit it. The findings of this study contribute to a better understanding of the interaction between asphaltenes and wax in wax deposition.
Article
Chemistry, Analytical
Abolfazl Abbasi-Amandi, Naghi Parvini Ahmadi, Mehdi Ojaghi-Ilkhchi, Mohammad Alinezhadfar
Summary: This study successfully prepared black nickel coatings with high current efficiency and compact structure through optimization of electrodeposition conditions. Addition of imidazole can reduce grain size, decrease crack width, and enhance the corrosion resistance of black nickel coatings.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Wenxuan Qin, Xiaoli Xi, Liwen Zhang, Zuoren Nie, Chunjia Liu, Rong Li
Summary: In order to prepare dense and smooth tungsten coatings, MOx additives (M = Zr, Ce, La, Y) were mixed into Na2WO4-WO3 molten salt. XRD and SEM were used to characterize the composition and microstructure of the coatings. Different MOx additives had significant effects on the phase, micromorphology, and performance of the coatings. The electrodeposition mechanism was explored using various electrochemical techniques.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Optics
T. S. Idrisov, M. A. Kurbanov, U. A. Kulieva
Summary: The photochemical stability of resins and asphaltenes during their photolysis under the influence of radiation from a mercury lamp is investigated by IR spectroscopy. It is found that exposure to UV light leads to a change in the band intensities of the absorption spectrum in the range of 400-3400 cm(-1). The observed trends are explained on the basis of the transfer of excitation energy from polycyclic aromatic hydrocarbon (PAH) molecules to alkane molecules.
OPTICS AND SPECTROSCOPY
(2021)
Article
Chemistry, Multidisciplinary
Richa Chaudhary, Varun Chaudhary, Yoshiyuki Suda, Raju V. Ramanujan, Terry W. J. Steele
Summary: Magnetocuring refers to the curing of epoxy using controlled heating of magnetic nanoparticles, achieving remote, wireless curing without resin overheating. By tuning CNP composition and adding carbon allotropes, SAR can be improved, while electromagnetic shielding, resin conductivity, and viscosity can regulate heat generation and dissipation. Nanocoils and nanotubes of CA enhance heating profiles of epoxy thermosets, leading to activation of magnetocured composites within 180 s under optimized conditions.
ADVANCED MATERIALS INTERFACES
(2021)
Article
Energy & Fuels
Simon Ivar Andersen, Sharath Chandra Mahavadi, Wael Abdallah, Johannes Jan Buiting
Editorial Material
Energy & Fuels
Nicolas von Solms, Wei Yan, Simon Andersen
Article
Chemistry, Multidisciplinary
Bastian Sauerer, Mikhail Stukan, Jan Buiting, Wael Abdallah, Simon Andersen
Article
Energy & Fuels
Simon Ivar Andersen
Article
Chemistry, Physical
Tian Wang, Simon Ivar Andersen, Alexander Shapiro
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2020)
Article
Chemistry, Physical
Huaping Li, Sharath Chandra Mahavadi, Adrian Anton, Simon Andersen
Summary: Interfacial tension (IFT) is crucial in petroleum engineering and can be influenced by surface-active components like naphthenic acids. A combination of bulk properties and the Gibbs-Langmuir model is suggested for more accurate estimation of IFT.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Thaddeus W. Golbek, Ryan A. Faase, Mette H. Rasmussen, Rik R. Tykwinski, Jeffrey M. Stryker, Simon Ivar Andersen, Joe E. Baio, Tobias Weidner
Summary: Petroleum asphaltenes are surface active compounds found in crude oils, with interactions with surfaces and interfaces impacting reservoir exploitation. This study used functionalized model asphaltenes on SAM surfaces to demonstrate different adsorption behaviors on hydrophobic and hydrophilic surfaces. Understanding pure and fractionated asphaltenes at the molecular level is crucial for predicting their varied surface interactions.
Article
Engineering, Environmental
Benaiah U. Anabaraonye, Jakob R. Bentzon, Ishaq Khaliqdad, Karen L. Feilberg, Simon I. Andersen, Jens H. Walther
Summary: Simulating turbulent reactive flows using CFD is crucial for understanding chemical reactions. Turbulence plays a vital role in advecting and diffusing chemical species, leading to an increase in reaction rates under turbulent conditions.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Geosciences, Multidisciplinary
M. Bonto, M. J. Welch, M. Luthje, S. Andersen, M. J. Veshareh, F. Amour, A. Afrough, R. Mokhtari, M. R. Hajiabadi, M. R. Alizadeh, C. N. Larsen, H. M. Nick
Summary: Research on Carbon Capture and Storage (CCS) in the past two decades has seen significant progress globally, with leaders and energy-intensive industries cooperating to reduce CO2 emissions. While chalk formations were previously considered unsuitable for CO2 storage due to reactivity, recent studies suggest their potential. Additionally, safety and monitoring techniques for CO2 storage in chalk formations have been discussed in this work, along with an analysis of trapping mechanisms and potential effects on injectivity.
EARTH-SCIENCE REVIEWS
(2021)
Article
Energy & Fuels
Rasoul Mokhtari, Ali Hosseini, Mobeen Fatemi, Simon Ivar Andersen, Shahab Ayatollahi
Summary: This study investigates the effect of brine salinity on asphaltene precipitation and destabilization mechanisms during water-flooding in oil reservoirs. The findings suggest that the precipitation mechanism of asphaltene depends on brine salinity, with ions possibly playing a key role in promoting asphaltene precipitation under high salinity conditions.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Simon Ivar Andersen, Kyle Bake, Sharath Chandra Mahavadi
Summary: Fluorescence spectroscopy is widely used in studying molecular interactions in biochemistry and petroleum systems. However, due to the complexity of crude oils and asphaltenes, corrections and assumptions are necessary for analyzing concentration effects. Inner filter effects and fluorescence resonance energy transfer (FRET) play important roles in spectral measurements, leading to apparent red shifts. Caution should be taken when interpreting concentration effects in petroleum studies, and appropriate corrections should be made before concluding on molecular interactions.
Article
Energy & Fuels
Liridon Aliti, Alexander Shapiro, Simon Ivar Andersen
Summary: Produced water discharged after separation contains traces of hydrocarbons that can affect eco-toxicity. By using microfluidic droplet generation, we evaluated the effects of production chemical combinations on oil droplet stability. The presence of a water-in-oil demulsifier as low as 4 ppm was shown to stabilize oil-in-water droplets, while a corrosion inhibitor created droplets in oil-water slug flow. The right dosage and combination of production chemicals were demonstrated to be important for droplet stability.
Review
Environmental Sciences
Ann F. Nielsen, Anders Baun, Simon I. Andersen, Lars M. Skjolding
Summary: This article focuses on the management of produced water (PW) discharges from offshore oil and gas installations in the North Atlantic and the ecotoxicity assessment of PW. The study finds a significant variability in the magnitude of PW ecotoxicity, with metals, hydrocarbons, and production chemicals identified as causative factors. However, the lack of knowledge on PW composition and the limitations in availability and reliability of ecotoxicity data pose challenges in identifying and generalizing PW ecotoxicity. It is recommended to improve the quality of ecotoxicity data, enhance the role of whole-effluent toxicity testing, and consider the actual composition of PW to increase the reliability of risk estimates and avoid mitigation actions based on uncertainties.
INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT
(2023)
Article
Energy & Fuels
Isabelle M. A. Viegas, Asmund Rinnan, Simon I. Andersen
Summary: Fluorescence spectroscopy is a promising technique for quantifying crude oil-in-water, as it provides information on both dissolved and dispersed molecules. Adding isopropanol to oil-in-water dispersions can prevent creaming of dispersed oil, but it affects the emission from crude oil. Therefore, it is not advisable to add isopropanol for oil quantification purposes by fluorescence spectroscopy.
Review
Environmental Sciences
Ann F. Nielsen, Anders Baun, Simon I. Andersen, Lars M. Skjolding
Summary: This article provides a literature review on the magnitude and cause of PW ecotoxicity and the challenges in estimating them. The review finds a large variability in the reported magnitude of PW ecotoxicity and highlights knowledge gaps on PW composition and high sample and species dependency of PW ecotoxicity. Limitations regarding the availability and reliability of ecotoxicity data result in large uncertainties in the subsequent risk estimates, which are not adequately reflected in the RBA output.
INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT
(2023)
