Reliable Determination of Water Contents of Bitumen and Vacuum Residua via Coulometric Karl Fischer Titration Using Tetrahydrofuran

Carbognani, Lante; Roa-Fuentes, L. C.; Diaz, Luis A.; Berezinski, J.; Carbognani-Arambarri, Lante; Pereira‐Almao, Pedro

doi:10.1080/10916466.2011.599194

Cited by 10 publications

(8 citation statements)

References 7 publications

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“…Triplicate emulsified water analysis for aliquots sampled from test AICISE #1 (ISC #339). Analysis achieved via Karl Fischer titration . Appended numbers: average values (% RSD).…”

Section: Resultsmentioning

confidence: 99%

“…Three aliquots of about 0.5 g were taken for water analysis and three aliquots (0.150g) for HTDS analysis. These aliquots were placed into 20 mL scintillation vials; their weights and solvent weights were recorded to the nearest 0.1 mg. Water analysis with coulometric Karl Fischer titration (KF) was carried out as described previously . Hydrocarbon masses for HTSD were corrected with the determined water contents, and the solutions were dried (MgSO 4 ) and filtered (0.45 μ membrane filter provided with luer tip syringe coupling) directly into the vials used for HTSD analysis.…”

Section: Methodsmentioning

confidence: 99%

“…24 Hydrocarbon masses for HTSD were corrected with the determined water contents, the solutions were dried (MgSO4) and filtered (0.45 µ membrane filter provided with luer tip syringe coupling) directly into the vials used for HTSD analysis. HTSD was performed with ASTM D7169 method, 14 as described before.…”

Section: Introductionmentioning

confidence: 99%

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Athabasca Bitumen In Situ Upgrading Reaction Monitoring: Operational Parameters versus Distillates Nature and Permanent Upgrading Achievable

et al. 2016

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Athabasca Bitumen upgrading via In Situ Combustion (ISC) and In Situ UpgradingTechnology (ISUT) was studied in the present work, addressing three aspects related to these processes: I. Monitoring techniques specially developed for getting distillation characteristics for products and their fractions, II. How distillation properties depend on process set up experimental conditions, III. Assess the permanent upgrading levels achieved for products from both studied processes. High temperature simulated distillation (HTSD) techniques were conceived for getting analysis turnarounds of 1-2 weeks, instead of month spans required when relying on standard physical distillation methodologies. Developed monitoring procedures guaranteed samples integrity, i.e., volatile fractions (<230ºC, about

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“…Triplicate emulsified water analysis for aliquots sampled from test AICISE #1 (ISC #339). Analysis achieved via Karl Fischer titration . Appended numbers: average values (% RSD).…”

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Athabasca Bitumen In Situ Upgrading Reaction Monitoring: Operational Parameters versus Distillates Nature and Permanent Upgrading Achievable

et al. 2016

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“…The method is a modified version of the procedure used by Carbognani et al. for the determination of water content of vacuum residue and bitumen using THF . The application measurement range is 100 ppm to 100% water.…”

Section: Methodsmentioning

confidence: 99%

“…The method is a modified version of the procedure used by Carbognani et al for the determination of water content of vacuum residue and bitumen using THF. 17 The application measurement range is 100 ppm to 100% water. About 0.5 g of the bitumen sample was dissolved in 10 mL of THF to form a homogeneous mixture that can be titrated.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal Treatment of Bitumen Froth: Impact of Mineral Solids and Water on Bitumen Properties

Turuga

Klerk

2021

Energy Fuels

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Hydrothermal treatment, i.e., thermal treatment of bitumen in the presence of water and solids, as a potential approach for combined froth treatment and upgrading was investigated in this work. Reactions were performed in batch reactors at 250 °C with the bitumen, water, and solid phases separated from industrially obtained bitumen froth, and the impact of the presence or absence of water and/or solids on the bitumen conversion was studied. Statistical analysis of bitumen properties revealed that the hydrothermal treatment of the bitumen froth at 250 °C did not lead to upgrading of the bitumen. Treatment at the conditions used in this study was beneficial only when the bitumen was converted on its own. Water and/or mineral solids contributed to an increase in viscosity, which was accompanied by an increase in free radical content. These observations were tentatively explained based on the generation of free radicals by redox reactions and heavier product formation promoted by free radical addition reactions. While the treatment did not significantly impact the density of bitumen, changes in the H/C ratio, n-heptane insoluble content, and metal content of bitumen were noted. The total acid number (TAN) of bitumen increased in the presence of water and mineral solids. Base-catalyzed hydrolysis of esters and anhydrides in bitumen might be responsible for the increase in TAN, and the solids and water appeared to promote these reactions.

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Activity assessment of NiMo bimetallic nanocatalyst in presence and absence of steam in in-situ upgrading technology (ISUT)

Khoshooei

Elahi

Carbognani

et al. 2021

Fuel

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Reliable Determination of Water Contents of Bitumen and Vacuum Residua via Coulometric Karl Fischer Titration Using Tetrahydrofuran

Cited by 10 publications

References 7 publications

Athabasca Bitumen In Situ Upgrading Reaction Monitoring: Operational Parameters versus Distillates Nature and Permanent Upgrading Achievable

Athabasca Bitumen In Situ Upgrading Reaction Monitoring: Operational Parameters versus Distillates Nature and Permanent Upgrading Achievable

Hydrothermal Treatment of Bitumen Froth: Impact of Mineral Solids and Water on Bitumen Properties

Activity assessment of NiMo bimetallic nanocatalyst in presence and absence of steam in in-situ upgrading technology (ISUT)

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