The petrochemical industry has received considerable attention from many sectors in our society. Petroleum spill has been frequently reported due to the lack of appropriate protocols during exploration, refining, transportation, and storage. An…
Abstract: The use of coal pitch as a binder in anode production for the aluminum industry is an outdated approach. Such pitch has a high content of carcinogens, polycyclic aromatic hydrocarbons, and tar phenols, and its environmental impact is…
The precipitation and deposition of asphaltenes often cause great troubles to the recovery and transportation of crude oil. Adding polymer inhibitors is an effective approach to prevent asphaltenes from clogging. In this study, maleic…
As an economic and efficient method, asphaltene dispersants are widely used to inhibit the precipitation of asphaltenes in the crude oil tank. In this study, a series of multi-alkylated aromatic amides (MAA) amphiphiles containing benzene rings and a…
Biochar has been widely applied for the remediation of petroleum-contaminated soil. However, the effect of biochar on the transport of petroleum degradation bacteria has not been studied. A typical Gram-positive petroleum degradation…
New ionic liquids were synthesized from asphaltene colloids that aggregate in the petroleum sludge precipitated in the storage tanks and transportation petroleum pipeline. The alkyl side chains on the asphaltenes were oxidized to polynuclear aromatic…
Petroleum refinery has been developed for production of transportation fuel with light alkenes and benzene, toluene, ethylbenzene, and xylenes (abbreviated BTEX), but global market demands are shifting to chemicals produced from light alkenes and…
Algerian crude oil displays a marked propensity for asphaltene precipitation, leading to solid deposits during extraction, transportation, and storage. The relationship between precipitation and chemical composition is unclear
Distinct naphthenic acid (NA) species were isolated from oil sands process water (OSPW) into 20 fractions via silver-ion solid phase extraction, prior to treatment using potassium ferrate(VI). Untreated and treated fractions F1F20 were characterized…
Corrosivity of petroleum fractions with the same total acid value (TAN) can be much different due to chemical structure differences of acidic species. To investigate corrosivity difference and interactions between different acidic species, acids with…
1 Scope This document specifies a test method for the determination of the content of mono-aromatic, di-aromatic and tri+-aromatic hydrocarbons in diesel fuels, paraffinic diesel fuels and petroleum distillates. This document defines two procedures,…
Although condensate oils are neither well defined nor have a known chemical composition, they are considered by the petroleum industry to be good candidates for the dilution of heavy crude oil as this generates a blend with a lower viscosity. This…
In this study, pyrolysis experiments were conducted with a saturate-rich Tertiary source rock-derived oil from the South China Sea basin using a fixed-volume pressure vessel at temperatures from 350 to 425 C for 24 h (0.92-1.85% Easy R0) to…
The depolymerization of lignin to high value-added aromatic monomers has attracted considerable attention. Nevertheless, an effective separation process is essential for obtaining aromatic monomers from lignin depolymerization products. In this…
Thermal desorption (TD) behaviors of high-concentration petroleum-contaminated soil (PCS) are affected by soil properties, especially inorganic minerals, in the soil composition. In this study, the TD behaviors of petroleum-contaminated quartz…
The heavy fractions from crude oil samples from different locations of a petroleum production line was investigated by gravimetric precipitation technique through the varying of n-alkane precipitant(s) type, volume, and volume ratios. The type of…
A recently developed extrography separation method fractionates petroleum asphaltenes based on their ionization efficiency, which correlates with polarity, aggregation tendency, and asphaltene structure (single-core or island versus multicore or…
In situ combustion (ISC) has been regarded as an efficient technique for the exploitation of heavy oil reserves. In this work, the thermal behavior of one heavy crude oil and the fractions of its saturates, aromatics, resins, and asphaltenes (SARA)…
High-field asymmetric waveform ion mobility spectrometry (FAIMS) was coupled to a high-resolution Orbitrap mass spectrometer (MS) with a heated electrospray ionization (HESI) source for the analysis of crude oil and respective saturate, aromatic, and…
In this research, four different crude oils from Tatarstan oil fields with wide range of API gravities (from 16.6 to 32.5 API) were used for hydrogen and carbon nuclear magnetic resonance spectroscopy (H NMR and C NMR) determinations. The hydrogen…
N-doped TiO2/ reduced graphene oxide (N/TiO2/rGO) composite was prepared and used together with the commercial TiO2 for comparative research on photocatalytic degradation of crude oil in seawater. Five test conditions were designed including a…
A good understanding of the interactions between the fractions of Saturates (S), Aromatics (A), Resin (R) and Asphaltenes (A) of crude oils is of great significance for in-situ combustion (ISC). However, due to the vast physiochemical diversity of…
Photooxidation was an important weathering process for spilled oil at the water surface following the Deepwater Horizon oil spill, leading to the rapid formation of polar or oxygenated hydrocarbons, or photo-generated asphaltenes. While the great…
In situ combustion (ISC) plays a significant role in the exploitation of heavy crude oil. In this study, the thermal behaviors and kinetics of combustion of heavy crude oil and its saturates-aromatics-reins-asphaltenes (SARA) fractions were…
In recent years, the behavior of crude oil interfacial tension (IFT) as a function of salt concentration have been investigated. The results found in literature are highly controversial, thus the current experimental study aimed to clarify the…
The chemical characterization of crude oil fractions is important for the petroleum research and complex structure of crude oil residue keeps studies ongoing. An analytical method which gives the composition of residue is not available yet and a…
In this work, crude oil fractions obtained using n-pentane were analyzed using atmospheric pressure photoionization coupled to ultrahigh-resolution magnetic resonance mass spectrometry. The crude oil was supported on Ottawa sand and transferred to a…
Abstract: Using the 1H NMR examination of a representative set of crude oils (86 samples, 54 oil fields and exploration areas) from the North Caucasus oil-and-gas basin, we obtained, for the first time, the structural-group composition of crude oils…
Two best-known molecular type analyses are PNA and SAP methods, which divide an olefin-free fraction into the sub-fractions (Paraffins, Naphthenes, and Aromatics) and (Saturates, Aromatics, and Poly-nuclear aromatics), respectively. In this study, a…
Aromatic hydrocarbons are one of the main components of petroleum and its fractions. However, the characterization of its molecular composition is still a technical challenge for mass spectrometry because of the lack of ionization methods, especially…
This work investigates the thermo-oxidative behaviour of saturates, aromatics, and resins, at different pressures of 0.084, 3.0, and 6.0 MPa. Saturates (S), aromatics (Ar), and resins (R) were characterized by elemental analysis, vapor pressure…
Oil spill events in the marine environment can have a deleterious impact on the affected ecosystems, such as coral reefs, with direct consequences for their socioeconomic value. The mutualistic relationship between tropical corals and their…
We have previously demonstrated that the Distillation, Precipitation, Fractionation Mass Spectrometry (DPF MS) method can be used to characterize crude oil at the molecular level by fractionating the crude oil into six different chemical classes and…
Nowadays, there is a significant increase in the share of unconventional oil reserves such as heavy and extra-heavy oils as well as natural bitumen among the total balance of extracted petroleum feedstock. In this regard, one of the most important…
The air injection process (AIP) has long been applied to enhance crude oil recovery. Oxidation of crude oil is essential for the success of air injection projects. However, the lack of accurate descriptions of the crude oil oxidation has led to…
Thermal maturity level of crude oil samples is commonly investigated using popular biomarkers such as steranes and hopanes. Although crude oil's thermal maturity is an important goal for petroleum engineers and geochemists, fewer researches have been…
We examined the degree of DNA damage caused by fractions of crude oil in accordance with the boiling points, polarity and log Kow. Relatively high DNA damage was observed in the aromatic fraction (290–330°C) and resin and polar fraction (350–400°C).…
Petroleum and distillates contain different concentrations of aromatic hydrocarbons. These compounds are important downstream as process indicators for product formulation. They can reduce the calorific value of some distillates, poison catalysts, be…
Algerian crude oil displays a marked propensity for asphaltene precipitation, leading to solid deposits during extraction, transportation, and storage. The relationship between precipitation and chemical composition is unclear
Biochar has been widely applied for the remediation of petroleum-contaminated soil. However, the effect of biochar on the transport of petroleum degradation bacteria has not been studied. A typical Gram-positive petroleum degradation…
Two best-known molecular type analyses are PNA and SAP methods, which divide an olefin-free fraction into the sub-fractions (Paraffins, Naphthenes, and Aromatics) and (Saturates, Aromatics, and Poly-nuclear aromatics), respectively. In this study, a…
Aromatic hydrocarbons are one of the main components of petroleum and its fractions. However, the characterization of its molecular composition is still a technical challenge for mass spectrometry because of the lack of ionization methods, especially…
Aromatic hydrocarbons are one of the main components of petroleum and its fractions. However, the characterization of its molecular composition is still a technical challenge for mass spectrometry because of the lack of ionization methods, especially…
This work investigates the thermo-oxidative behaviour of saturates, aromatics, and resins, at different pressures of 0.084, 3.0, and 6.0 MPa. Saturates (S), aromatics (Ar), and resins (R) were characterized by elemental analysis, vapor pressure…
As an economic and efficient method, asphaltene dispersants are widely used to inhibit the precipitation of asphaltenes in the crude oil tank. In this study, a series of multi-alkylated aromatic amides (MAA) amphiphiles containing benzene rings and a…
Oil spill events in the marine environment can have a deleterious impact on the affected ecosystems, such as coral reefs, with direct consequences for their socioeconomic value. The mutualistic relationship between tropical corals and their…
As an economic and efficient method, asphaltene dispersants are widely used to inhibit the precipitation of asphaltenes in the crude oil tank. In this study, a series of multi-alkylated aromatic amides (MAA) amphiphiles containing benzene rings and a…
New ionic liquids were synthesized from asphaltene colloids that aggregate in the petroleum sludge precipitated in the storage tanks and transportation petroleum pipeline. The alkyl side chains on the asphaltenes were oxidized to polynuclear aromatic…
The air injection process (AIP) has long been applied to enhance crude oil recovery. Oxidation of crude oil is essential for the success of air injection projects. However, the lack of accurate descriptions of the crude oil oxidation has led to…