Hydrate-based technology could be a potential option for efficient storage and transportation of lean natural gas or biogas, which contains a significant portion of carbon dioxide. In this work, hydrate formation of a ternary methane-carbon…
In Thailand, onshore drill cuttings (DC) contaminated with total petroleum hydrocarbon (TPH) are currently transported off-site for incineration, causing high transportation cost and potential leakage to the environment. To address the issues, we…
Heavy crude oil shows high viscosity combined with low mobility, which affects the efficient transportation through pipelines. Drag has long been identified as the main reason for the loss of energy in pipeline fluid transmission and other similar…
Heavy crude oils are complex fluid mixture with a high proportion of asphaltic molecules, sulfur and several heavy metals like nickel, vanadium, and nitrogen. These components will affect negatively transporting viscous crude oil from production…
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…
Semiclathrate hydrates of natural gas have shown potential applications in natural gas storage and transportation. Promoters, viz., tetra-n-alkyl ammonium bromide (TBAB) and tetrahydrofuran (THF) have positive impacts on the phase stability condition…
The U.S. Geological Survey assessed undiscovered unconventional hydrocarbon resources reservoired in the Upper Cretaceous Tuscaloosa marine shale (TMS) of southern Mississippi and adjacent Louisiana in 2018. As part of the assessment, oil-source rock…
Hydrilla verticillata contains some active compounds that potential as an antioxidant, antibacterial, anticancer, antimicrobial and antitumor. One of the active compounds in Hydrilla verticillata is steroids. This research aimed to isolate, to…
Recently, there has been an interest in solvent extraction for extraction organic matter from oil shale. Heating of oil shale in an inert atmosphere facilitated the extraction of the organic matter by solvent extraction. In this research, shale oil…
The characterization of the feedstock is an important analytical task in the modeling and development of processes for upgrading of petroleum residues. This work presents the results of fractionation of the vacuum petroleum residue by extraction…
Bergamot model mixture and crude bergamot essential oil (CBEO) were fractionated in a perforated rotating disc contactor (PRDC) using as solvents ethanol with 30% (Et30) and 40% (Et40) water, in mass. The apparatus performance was evaluated by…
Microbial community shifts of a freshwater wetland with crude oil pressure were investigated fully as a function of cultivation time, using the enrichment procedure and high-throughput sequencing. Bacterial structures and biodegradation capabilities…
Since a large amount of sediment organic matter and hydrophobic organic compounds presented in oily sludge sediments in petroleum storage tanks, separation or degradation of these compounds are environmentally important. Therefore, the effect of four…
Nowadays, the production of liquid fuel faces such problems as the matching of the final product with the world standards. To solve these problems, the development of novel technologies and highly effective catalysts for crude oil processing and…
Hydrate-based gas storage and transportation is limited by harsh hydrate formation conditions and low formation rate, which cannot be used in large-scale commercial applications. In this work, based on the good thermodynamic properties of…
This work focuses on analyzing the electrokinetic behavior of asphaltenes of extra heavy oil. For this, electrodepositions were carried out in asphaltene solutions (4 %w/w) with two solvents of different polarities: toluene and chloroform. In…
The present study reports, high-performance polymer absorbents for crude oil and organic solvents based on 3D cross-linked polystyrene-polymethyl methacrylate/divinyl benzene (PS-PMMA/DVB). The preparation of the 3D cross-linked polymer absorbents…
CO2 is one of the major contaminants in natural gas produced from the reservoir. Many gas fields are not monetized due to the presence of high levels of CO2 in the natural gas reservoir (in some locations, as high as 80%). SNG (solidified natural…
As waxy crude oil comes to the surface, it will cool down and causing the waxy fraction to gel. The gelled crude chokes the well, leading to restricted or blocked production and costly downtime for operators. One of the most common chemical solutions…
Scope: These test methods cover the determination of the amounts of the individual fatty acids and rosin acids in fractionated tall oil products, using capillary gas chromatographic separation of the volatile methyl esters of these acids. Four…
The value-added utilizations of technical lignin are restricted by its heterogeneous features, such as high polydispersity, complex functional group distribution, ununiformed reactivity, etc. Fractionation of lignin into more homogeneous parts…
Asphaltenes represent the most polar solubility fraction of crude oil. The polar-polar interactions between asphaltene-water, asphaltene-clay, or asphaltene-asphaltene molecules can cause severe flow assurance issues in the oilfield such as formation…
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…
Heavy crude oils are complex fluid mixture with a high proportion of asphaltic molecules, sulfur and several heavy metals like nickel, vanadium, and nitrogen. These components will affect negatively transporting viscous crude oil from production…
This study focuses on the production and characterisation of fast pyrolysis bio-oil from hardwood (Populus) and softwood (Spruce) using a bench-scale pyrolysis reactor at two different temperatures. In this study, a mixed solvent extraction method…
In the modern age of human civilization, consumption of different oils for example, petroleum oil (e.g., gasoline), mineral oil (mainly, the liquid by-product during refining of crude oil), diesel oil, lubricants (i.e., engine oil), vegetable oil…
Heavy crude oils are complex fluid mixture with a high proportion of asphaltic molecules, sulfur and several heavy metals like nickel, vanadium, and nitrogen. These components will affect negatively transporting viscous crude oil from production…
This paper describes a new approach to online monitoring salt content in crude oil. An extensive experimental study was conducted in the laboratory on different crude oil types, to evaluate accuracy and repeatability of the new method in comparison…
Asphaltenes represent the most polar solubility fraction of crude oil. The polar-polar interactions between asphaltene-water, asphaltene-clay, or asphaltene-asphaltene molecules can cause severe flow assurance issues in the oilfield such as formation…
This paper describes a new approach to online monitoring salt content in crude oil. An extensive experimental study was conducted in the laboratory on different crude oil types, to evaluate accuracy and repeatability of the new method in comparison…
Asphaltenes represent the most polar solubility fraction of crude oil. The polar-polar interactions between asphaltene-water, asphaltene-clay, or asphaltene-asphaltene molecules can cause severe flow assurance issues in the oilfield such as formation…
Scope: These test methods cover the determination of the amounts of the individual fatty acids and rosin acids in fractionated tall oil products, using capillary gas chromatographic separation of the volatile methyl esters of these acids. Four…
Bio-oil, a complex mixture of organics, can be a source for automobile fuel and for chemicals, it is advantageous to separate the complex mixture to simplified fractions for further treatments. Herein, wood-tar fractionation by column chromatographic…
Asphaltenes are defined as the petroleum fraction insoluble in n-alkanes and soluble in aromatic solvents, such as toluene. Such definition implies that asphaltenes are not a homogeneous material but a mixture of fractions. Asphaltenes represent one…
Scope: These test methods cover the determination of the amounts of the individual fatty acids and rosin acids in fractionated tall oil products, using capillary gas chromatographic separation of the volatile methyl esters of these acids. Four…
The value-added utilizations of technical lignin are restricted by its heterogeneous features, such as high polydispersity, complex functional group distribution, ununiformed reactivity, etc. Fractionation of lignin into more homogeneous parts…
Separating bio-oil by fractionation with different chemical compositions is a critical step to refine these oils and obtain high-value products. Cold water precipitation of pyrolytic lignin from bio-oil is the most common approach used. However, the…
Bio-oil is a highly valuable product derived from biomass pyrolysis which could be used in various downstream applications upon appropriate upgrading and refining. Extraction and fractionation are two promising methods to upgrade bio-oil by…
Two multistage separation techniques have been used to fractionate isotropic petroleum pitches: (1) a stagewise fractionation technique employing sequential, single-stage extractions with supercritical toluene, and (2) dense-gas fractionation with a…
The swelling of kerogen in several well-defined solvents was measured to derive thermodynamic parameters specified by an extended Flory-Rehner and Regular Solution Theory framework. These parameters are needed to assess the importance of the…
Asphaltenes and resins of crude oil from the Usa oil field have been subjected to fractionation. The asphaltenes have been separated into fractions by fractional precipitation with chloroform/hexane solvent blends in the ratios of 30/70, 30/75, and…
Scope: These test methods cover the determination of the amounts of the individual fatty acids and rosin acids in fractionated tall oil products, using capillary gas chromatographic separation of the volatile methyl esters of these acids. Four…
A commercially produced petroleum pitch (M-50) consisting of PAH oligomers was fractionated via supercritical (SC)/dense-gas extraction, using two packed columns operating in series on a continuous basis. In the 1st column, toluene was used as the SC…
Scope: These test methods cover the determination of the amounts of the individual fatty acids and rosin acids in fractionated tall oil products, using capillary gas chromatographic separation of the volatile methyl esters of these acids. Four…
Scope: These test methods cover the determination of the amounts of the individual fatty acids and rosin acids in fractionated tall oil products, using capillary gas chromatographic separation of the volatile methyl esters of these acids. Four…
Scope: These test methods cover the determination of the amounts of the individual fatty acids and rosin acids in fractionated tall oil products, using capillary gas chromatographic separation of the volatile methyl esters of these acids. Four…
The goal of this work is to provide characterization and a unified framework for understanding asphaltenes in crude oil. A fractionation technique that divides an asphaltene sample into different components based on polarity was developed. The…
The introduction of nanomaterials into oil-soluble viscosity-reducing agents has attracted attention because of the potential to reduce resistance during the injection process in oil recovery. In this paper, toluene was used as a solvent in…
The deposition of crude oil in various production and surfaces facilities such as oil storage tanks in the form of tank-bottom sludge, pipeline deposition, skin formation at the near well-bore, deposition in the tubing leads to blockage which invites…