An FTIR method for the analysis of crude and heavy fuel oil asphaltenes to assist in oil fingerprinting

Riley, Brenden J.; Lennard, Chris; Fuller, Stephen; Spikmans, Val

doi:10.1016/j.forsciint.2016.07.018

Cited by 43 publications

(10 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The spectrum for the weathered sample showed a higher absorbance in the regions (650-930 cm −1 ) and (1260-1520 cm −1 ) compared to the spectrum for non-weathered sample (an additional band structure around 880 cm −1 ). The FTIR results of weathered TMs obtained from the present study also match very well with that of Riley et al (2016). Earlier studies found that most of the heavily weathered TMs deposited along the Qatar coast (Al-Madfa et al, 1999;Al-Kaabi et al, 2017) and the PAHs present in the sediments (Rushdi et al, 2017;Soliman et al, 2019) were originated from the Gulf War.…”

Section: Weathering State Of Tmssupporting

confidence: 85%

“…7c) indicate that the increase in the relative proportion of aromatic compounds is likely to be due to the persistence of compounds that are relatively resistant to weathering such as alkylated chrysenes (White et al, 2016). Riley et al (2016) used ATR-FTIR method to fingerprint the weathered and non-weathered Middle Eastern crude and heavy fuel oil asphaltenes. The spectrum for the weathered sample showed a higher absorbance in the regions (650-930 cm −1 ) and (1260-1520 cm −1 ) compared to the spectrum for non-weathered sample (an additional band structure around 880 cm −1 ).…”

Section: Weathering State Of Tmsmentioning

confidence: 99%

See 1 more Smart Citation

Spatial distribution, structural characterization and weathering of tarmats along the west coast of Qatar

Veerasingam

Al‐Khayat

Haseeba

et al. 2020

Marine Pollution Bulletin

View full text Add to dashboard Cite

Oil pollution resulting from natural and anthropogenic activities in the Arabian Gulf as well as oil residue in the form of tarmat (TM) deposited on the coast is a major environmental concern. The spatial distribution, chemical composition and weathering pattern of tarmat along the west coast of Qatar has been assessed based on the TM samples collected from 12 coastal regions. The range of TM distribution is 0-104 g m −1 with an average value of 9.25 g m −1. Though the current TM level is thirty-fold lesser than that was found during 1993-1997 (average 290 g m −1), the distribution pattern is similar. The results of ATR-FTIR spectroscopy indicate that aromatic compounds are higher in the north (N) coast TMs than those found in the northwest (NW) and southwest (SW) coasts, and Carbonyl Index values indicate that TM of NW coast is highly weathered compared to those found in the N and SW coasts.

show abstract

Section: Weathering State Of Tmssupporting

confidence: 85%

Section: Weathering State Of Tmsmentioning

confidence: 99%

Spatial distribution, structural characterization and weathering of tarmats along the west coast of Qatar

Veerasingam

Al‐Khayat

Haseeba

et al. 2020

Marine Pollution Bulletin

View full text Add to dashboard Cite

show abstract

“…Peaks in range 1,500–1,600 cm −1 corresponds to CC stretching vibrations observed in aromatic compounds . A sharp peak is found in proximity of 1,457 cm −1 , indicating presence of asphaltenes . It has been observed from FTIR plots that after emulsification, the major saturate peak at 720 cm −1 has disappeared probably due to dissolution of paraffin wax, and there has been introduction of new peak in the range 1,000–1,172 cm −1 .…”

Section: Resultsmentioning

confidence: 96%

“…54 A sharp peak is found in proximity of 1,457 cm −1 , indicating presence of asphaltenes. 55 It has been observed from FTIR plots that after emulsification, the major saturate peak at 720 cm −1 has disappeared probably due to dissolution of paraffin wax, and there has been introduction of new peak in the range 1,000-1,172 cm −1 . This peak is attributed to the presence of sulfate group in the surfactant.…”

Section: Surface Tension (Sft) Of O/w Emulsionsmentioning

confidence: 99%

Study the influence of sodium dodecyl sulfate on emulsification of heavy and waxy crude oils to improve their flow ability in low temperature conditions

Sharma

Deka

Mandal

et al. 2018

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

Transportation of heavy and waxy crude oils through pipelines is a problem in many regions of the world where low temperatures are observed usually in offshore conditions due to wax and asphaltene precipitation. Transporting them as oil‐in‐water (O/W) emulsion through pipelines is one of the feasible flow assurance solutions. In this research work, O/W emulsions using anionic surfactant sodium dodecyl sulfate are prepared for two Indian crude oil samples having significant asphaltene and wax deposition potential and effect of emulsification on the flow properties of these crude oils are thoroughly analyzed. It is found that the prepared emulsions have very stable phase volume composition up to 50 days at ambient conditions, and they are thermally stable in the temperature range 20–45°C. Emulsions of heavy crude oil are found to be relatively more stable than that of waxy crude with time and temperatures. Fifty percent (v/v) is the observed optimized oil content in the prepared o/w emulsions for both the crude oils at optimum surfactant concentration that is critical micelle concentration (CMC). The prepared emulsions have viscosities as low as 0.01 Pa s and pour point as low as less than 0°C, ensuring easy flow at low temperatures, suited for pipeline transportation at subsea conditions. Interfacial tension and surface tension values of waxy crude‐water system and its o/w emulsions respectively are higher than that of heavy crude‐water system and its O/W emulsions, which indicate difficulty in waxy crude oil transportation compared with heavy crude oil.

show abstract

“…Many instrumental analytical techniques were used to investigate asphaltene composition, structure and aggregation properties, such as X-ray diffraction (XRD), [2][3][4] mass spectrometry (MS), [5][6][7][8][9] gas chromatography (GC), [10] fluorescence depolarization (FD), [11] scanning electron microscopy (SEM), [12,13] transmission electron microscopy (TEM), [12] Fourier-transform infrared spectroscopy (FTIR), [14,15] vapor pressure osmometry (VPO), [16] smallangle X-ray scattering (SAXS), [17,18] small-angle neutron scattering (SANS), [19][20][21] nuclear magnetic resonance (NMR) [22][23][24][25] A spectroscopy and others. Despite of all efforts made to understand asphaltene behavior and structural architecture, there are many details still to be resolved.…”

Section: Methods For Asphaltene Analysismentioning

confidence: 99%

NMR Spectroscopy as a Tool for Studying Asphaltene Composition

Vuković¹,

Novak

Jednačak

2019

Croat. chem. acta (Online)

View full text Add to dashboard Cite

Asphaltenes are the most polar oil components with molecular weights between 500 and 1000 Da, which primarily consist of carbons and hydrogens, some heteroatoms, such as nitrogen, sulphur, oxygen and traces of nickel, vanadium and iron. Owing to their extreme complexity, it is almost impossible to completely identify all the compounds present in asphaltene samples. Various analytical techniques and approaches were used to characterize asphaltenes but their structure and composition are still a matter of thorough investigations. NMR spectroscopy can reveal useful information on asphaltene molecular architecture and aggregation process. In that respect, one- and two-dimensional NMR techniques have widely been employed. Although NMR spectra of these complex mixtures are difficult to interpret, they still can provide valuable data, especially in combination with statistical methods. Some distinctive examples of using NMR spectroscopy to study asphaltenes are given in this review.

show abstract

An FTIR method for the analysis of crude and heavy fuel oil asphaltenes to assist in oil fingerprinting

Cited by 43 publications

References 21 publications

Spatial distribution, structural characterization and weathering of tarmats along the west coast of Qatar

Spatial distribution, structural characterization and weathering of tarmats along the west coast of Qatar

Study the influence of sodium dodecyl sulfate on emulsification of heavy and waxy crude oils to improve their flow ability in low temperature conditions

NMR Spectroscopy as a Tool for Studying Asphaltene Composition

Contact Info

Product

Resources

About