• 703 Citations
20072019
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Research Output 2007 2019

2019
3 Citations (Scopus)

Coupled Oxidation-Extraction Desulfurization: A Novel Evaluation for Diesel Fuel

Gao, S., Chen, X., Xi, X., Abro, M., Afzal, W., Abro, R. & Yu, G., 2019, In : ACS Sustainable Chemistry & Engineering. 7, 6, p. 5660-5668 9 p.

Research output: Contribution to journalArticle

Desulfurization
Diesel fuels
oxidation
Oxidation
simulation

Surface tension of aqueous solutions of small-chain amino and organic acids

Raza, M., Hallett, P., Liu, X., He, M. & Afzal, W., 11 Oct 2019, (Accepted/In press) In : Journal of Chemical and Engineering Data.

Research output: Contribution to journalArticle

Vapour-liquid equilibria of ethane and ethyl mercaptan: experiments and modelling

Afzal, W., Valtz, A. & Coquelet, C., 30 Jan 2019, In : Journal of Natural Gas Engineering. 3, 1, p. 96-108 13 p.

Research output: Contribution to journalArticle

liquid-vapor equilibrium
thiols
ethane
samplers
sapphire
5 Citations (Scopus)

Viscosity of Oxygenated Fuel: A Model Based on Eyring's Absolute Rate Theory

Zhu, C., Yang, F., Liu, X., Afzal, W. & He, M., 1 Apr 2019, In : Fuel. 241, p. 218-226 9 p.

Research output: Contribution to journalArticle

Viscosity
Free volume
Ethers
Equations of state
Vacancies
2018

A Neuro-Fuzzy Approach to Screening Mature Fields for EOR processes

Ramos, G. A. R., Akanji, L. & Afzal, W., 24 Apr 2018.

Research output: Contribution to conferencePaper

Development of a Bespoke Enhanced Oil Recovery (EOR) Technology: A Future for Angolan Oilfield Production

Ramos, G. A. R., Akanji, L. & Afzal, W., 7 Mar 2018, Offshore Well Intervention Workshop, West Coast Africa. Ghana

Research output: Chapter in Book/Report/Conference proceedingConference contribution

23 Citations (Scopus)
9 Downloads (Pure)

Potential of biomass for bioenergy in Pakistan based on present case and future perspectives

Naqvi, S. R., Jamshaid, S., Naqvi, M., Farooq, W., Niazi, M. B. K., Aman, Z., Zubair, M., Ali, M., Shahbaz, M., Inayat, A. & Afzal, W., 1 Jan 2018, In : Renewable and Sustainable Energy Reviews. 81, 1, p. 1247-1258 12 p.

Research output: Contribution to journalArticle

Open Access
File
Biomass
Bioconversion
Energy security
Gas fuels
Biofuels

Vapour-Liquid Equilibria of Ethane and Ethanethiol: Experiments and Modelling

Afzal, W., Valtz, A. & Coquelet, C., 1 Dec 2018, In : Journal of Natural Gas Engineering. 3, 2, p. 96-108 13 p.

Research output: Contribution to journalArticle

Open Access
File
2017
1 Citation (Scopus)
4 Downloads (Pure)

Initial Interfacial Tension for Various Organic–Water Systems and Study of the Effect of Solute Concentration and Temperature

Shahid, M. Z., Usman, M. R., Akram, M. S., Khawaja, S. Y. & Afzal, W., 13 Apr 2017, In : Journal of Chemical and Engineering Data. 62, 4, p. 1198-1203 6 p.

Research output: Contribution to journalArticle

Open Access
File
Surface tension
Organic compounds
1-Octanol
Propionic acid
Temperature
4 Downloads (Pure)

Mass transfer efficiency of a tall and low plate free area liquid pulsed sieve-plate extraction column

Khawaja, S. Y., Usman, M. R., Nasif, M., Akram, M. S., Afzal, W. & Akhtar, N. A., Dec 2017, In : International Journal of Industrial Chemistry. 8, 4, p. 397-410 14 p.

Research output: Contribution to journalArticle

Open Access
File
Sieves
Mass transfer
Liquids
Phase velocity
Acetic Acid
2015
6 Citations (Scopus)
8 Downloads (Pure)

Nitric-acid Hydrolysis of Miscanthus giganteus to Sugars Fermented to Bioethanol

Yang, F., Afzal, W., Cheng, K., Liu, N., Pauly, M., Bell, A. T., Liu, Z. & Prausnitz, J. M., Apr 2015, In : Biotechnology and Bioprocess Engineering. 20, 2, p. 304-314 11 p.

Research output: Contribution to journalArticle

Open Access
File
Nitric Acid
Bioethanol
Nitric acid
Sugars
Hydrolysis
4 Citations (Scopus)
1 Downloads (Pure)

Physical data for a process to separate krypton from air by selective absorption in an ionic liquid

Afzal, W., Liu, X. & Prausnitz, J. M., 25 Oct 2015, In : Fluid Phase Equilibria. 404, p. 124-130 7 p.

Research output: Contribution to journalArticle

Krypton
Ionic Liquids
krypton
Ionic liquids
air
6 Citations (Scopus)
6 Downloads (Pure)

Pretreatment of Miscanthus giganteus with Lime and Oxidants for Biofuels

Yang, F., Liu, Z., Afzal, W., Bell, A. T. & Prausnitz, J. M., 2015, In : Energy & Fuels. 29, 3, p. 1743-1750 8 p.

Research output: Contribution to journalArticle

Open Access
File
Biofuels
Oxidants
Lime
Enzymatic hydrolysis
Biomass
2014
19 Citations (Scopus)

High Solubilities for Methane, Ethane, Ethylene, and Propane in Trimethyloctylphosphonium Bis(2,4,4-trimethylpentyl) Phosphinate ([P8111][TMPP])

Liu, X., Ruiz, E., Afzal, W., Ferro, V. R., Palomar, J. & Prausnitz, J. M., 8 Jan 2014, In : Industrial & Engineering Chemistry Research. 53, 1, p. 363-368 6 p.

Research output: Contribution to journalArticle

Propane
Ethane
Methane
Ethylene
Solubility
16 Citations (Scopus)
Ionic Liquids
Ionic liquids
Carbon Dioxide
Carbon dioxide
Solubility
16 Citations (Scopus)

Pretreatment of Miscanthus× giganteus using Aqueous Ammonia with Hydrogen Peroxide to Increase Enzymatic Hydrolysis to Sugars

Yu, G., Afzal, W., Yang, F., Padmanabhan, S., Liu, Z., Xie, H., Shafy, M. A., Bell, A. T. & Prausnitz, J. M., May 2014, In : Journal of Chemical Technology & Biotechnology. 89, 5, p. 698-706 9 p.

Research output: Contribution to journalArticle

Enzymatic hydrolysis
Ammonia
Hydrogen peroxide
Sugars
hydrogen peroxide
12 Citations (Scopus)

Solubilities of Small Hydrocarbons, Viscosities of Diluted Tetraalkylphosphonium Bis(2,4,4-trimethylpentyl) Phosphinates

Liu, X., Afzal, W., He, M. & Prausnitz, J. M., Jul 2014, In : AIChE Journal. 60, 7, p. 2607-2612 6 p.

Research output: Contribution to journalArticle

Ethane
Ionic Liquids
Hydrocarbons
Viscosity
Solubility
4 Citations (Scopus)

Two-step delignification of miscanthus to enhance enzymatic hydrolysis: aqueous ammonia followed by sodium hydroxide and oxidants

Liu, Z., Padmanabhan, S., Cheng, K., Xie, H., Gokhale, A. A., Afzal, W., Na, H., Pauly, M., Bell, A. T. & Prausnitz, J. M., 16 Jan 2014, In : Energy & Fuels. 28, 1, p. 542-548 7 p.

Research output: Contribution to journalArticle

Sodium Hydroxide
Delignification
Enzymatic hydrolysis
Oxidants
Ammonia
15 Citations (Scopus)
Ionic Liquids
Ionic liquids
Anions
Cations
Negative ions
4 Citations (Scopus)

Viscosities and Densities of Phosphonium-Based Ionic Liquids Mixed with Dodecane

Awwad, N., Liu, X., Afzal, W. & Prausnitz, J. M., Jul 2014, In : Zeitschrift für Physikalische Chemie. 228, 8, p. 839-850 12 p.

Research output: Contribution to journalArticle

Ionic Liquids
Viscosity
Binary mixtures
Gases
n-dodecane
2013
6 Citations (Scopus)

Dispersed Phase Holdup in a Tall and Low Plate Free Area Liquid Pulsed Sieve-Plate Extraction Column

Khawaja, SY., Usman, MR., Khan, S., Afzal, W. & Akhtar, NA., 2013, In : Separation Science and Technology. 48, 1, p. 175-182 8 p.

Research output: Contribution to journalArticle

sieves
liquids
phase velocity
solutes
interfacial tension
12 Citations (Scopus)

Effect of Water on the Densities and Viscosities of Some Ionic Liquids Containing a Phosphonium Cation

Yoo, B., Afzal, W. & Prausnitz, J. M., 2013, In : Zeitschrift für Physikalische Chemie. 227, 2-3, p. 157-166 10 p.

Research output: Contribution to journalArticle

Ionic Liquids
Imides
Cations
Viscosity
Water
132 Downloads (Pure)
Open Access
File
5 Citations (Scopus)
Ionic Liquids
Activity coefficients
Ionic liquids
Sulfates
Chlorides
30 Citations (Scopus)

High solubilities of small hydrocarbons in trihexyl tetradecylphosphonium bis (2, 4, 4-trimethylpentyl) phosphinate

Liu, X., Afzal, W., Yu, G., He, M. & Prausnitz, J. M., 15 Aug 2013, In : The Journal of Physical Chemistry B. 117, 36, p. 10534-10539 6 p.

Research output: Contribution to journalArticle

Solubility
Hydrocarbons
Paraffins
Olefins
Ethane

Saccharification of Miscanthus $ Giganteus With Dilute Nitric Acid

Yang, F., Afzal, W., Liu, N., Cheng, K., Bell, A. T. & Prausnitz, J. M., 2013, 2013 Annual Meeting of American Institute of Chemical Engineers : AIChE 2013. AIChE

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Separation of Small Paraffin-Olefin Mixtures With An Ionic Liquid: Thermodynamic Study Using COSMO-RS

Ruiz, E., Afzal, W., Liu, X., Yu, G., Palomar, J. & Prausnitz, J. M., 6 Nov 2013, 2013 AIChE Annual Meeting Proceedings: Separations Division: Advances in Absorption. AIChE, 522c

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ionic Liquids
Propane
Ethane
Alkenes
Paraffin

Solubilities, Densities and Viscosities of Two Low-Density Ionic Liquids Containing Small Hydrocarbons

Liu, X., Afzal, W., Gilbert, Y. & Prausnitz, J. M., 4 Nov 2013, 2013 AIChE Annual Meeting Proceedings: Engineering Sciences and Fundamentals: Thermophysical Properties and Phase Behavior I. AIChE

Research output: Chapter in Book/Report/Conference proceedingConference contribution

23 Citations (Scopus)
Hydrocarbons
Ionic Liquids
Ethane
Solubility
Ionic liquids
39 Citations (Scopus)

Solubilities of some gases in four immidazolium-based ionic liquids

Afzal, W., Liu, X. & Prausnitz, J. M., Aug 2013, In : The Journal of Chemical Thermodynamics. 63, p. 88-94 7 p.

Research output: Contribution to journalArticle

Ionic Liquids
Ionic liquids
solubility
Solubility
Gases
2012
15 Citations (Scopus)

Experimental study and phase equilibrium modeling of systems containing acid gas and glycol

Afzal, W., Breil, M. P., Tsivintzelis, I., Mohammadi, A. H., Kontogeorgis, G. M. & Richon, D., 25 Mar 2012, In : Fluid Phase Equilibria. 318, p. 40-50 11 p.

Research output: Contribution to journalArticle

Glycols
Phase equilibria
glycols
Gases
acids
10 Citations (Scopus)
Noble Gases
Ionic Liquids
Inert gases
Ionic liquids
Hydrogen
24 Citations (Scopus)

Solubilities of some organic solutes in 1-ethyl-3-methylimidazolium acetate: Chromatographic measurements and predictions from COSMO-RS

Rosenboom, J-G., Afzal, W. & Prausnitz, J. M., Apr 2012, In : The Journal of Chemical Thermodynamics. 47, p. 320-327 8 p.

Research output: Contribution to journalArticle

tert-Butyl Alcohol
Heptanes
1-Propanol
Column chromatography
Phase measurement
26 Citations (Scopus)

Solubility parameters for nine ionic liquids

Yoo, B., Afzal, W. & Prausnitz, J. M., 25 Jul 2012, In : Industrial & Engineering Chemistry Research. 51, 29, p. 9913-9917 5 p.

Research output: Contribution to journalArticle

Ionic Liquids
Ionic liquids
Solubility
Sulfates
Chlorides
2011
5 Downloads (Pure)

On the factors influencing the hydrodynamic performance of a pulsed sieve-plate extraction column: dispersed phase holdup

Khawaja, S. Y., Usman, M. R., Khan, S., Afzal, W., Akram, M. S., Khan, R. U. & Akhtar, N. A., 2011, In : Journal of Faculty of Engineering Technology. 18, 1, p. 1-11 11 p.

Research output: Contribution to journalArticle

Open Access
File
sieves
phase velocity
hydrodynamics
liquids
pulses
2010

Experimental study and phase equilibrium modeling of systems containing acid gas and glycol

Afzal, W., Mohammadi, A. H., Richon, D. & Kontogeorgis, G. M., Mar 2010, 89th Annual Convention of Gas Processors Association 2010. Gas Processors Association, USA, P2010.41

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2009
18 Citations (Scopus)
6 Downloads (Pure)

Drop size in a liquid pulsed sieve-plate extraction column

Usman, M. R., Sattar, H., Hussain, SN., Muhammad, H., Asghar, A. & Afzal, W., Oct 2009, In : Brazilian Journal of Chemical Engineering. 26, 4, p. 677-683 7 p.

Research output: Contribution to journalArticle

Open Access
File
sieves
drop size
liquids
phase velocity
kerosene

Estimation of the impact of sulfur species on glycol dehydration

Afzal, W., Breil, M. P., Mohammadi, A. H., Kontogeorgis, G. & Richon, D., 2009, VIII Iberoamerican Conference on Phase Equilibria and Fluid Properties for Process Design 2009: VIII-EQUIFASE 2009.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Phase equilibria of glycol-natural gas systems (PhD Dissertation)

Afzal, W., 2009, MINES ParisTech. 140 p.

Research output: Book/ReportOther Report

natural gas
phase equilibrium
thermodynamics
corrosion
aqueous solution
15 Citations (Scopus)

Phase equilibria of mixtures containing glycol and n-alkane: experimental study of infinite dilution activity coefficients and modeling using the cubic-plus-association equation of state

Afzal, W., Breil, M. P., Théveneau, P., Mohammadi, A. H., Kontogeorgis, G. M. & Richon, D., 16 Dec 2009, In : Industrial & Engineering Chemistry Research. 48, 24, p. 11202-11210 9 p.

Research output: Contribution to journalArticle

Glycols
Alkanes
Activity coefficients
Equations of state
Phase equilibria
40 Citations (Scopus)
Glycols
Density (specific gravity)
Polyethylene glycols
Ethylene Glycol
Atmospheric pressure
2008
21 Citations (Scopus)

Determination of critical properties and acentric factors of petroleum fractions using artificial neural networks

Mohammadi, A. H., Afzal, W. & Richon, D., 7 May 2008, In : Industrial & Engineering Chemistry Research. 47, 9, p. 3225-3232 8 p.

Research output: Contribution to journalArticle

Petroleum distillates
Neural networks
Boiling point
Feedforward neural networks
Hydrocarbons
61 Citations (Scopus)
Propane
Ethane
Ethylene Glycol
Glycols
Ethylene glycol
24 Citations (Scopus)
Propane
Ethane
Methane
Glycols
Hydrates
95 Citations (Scopus)
Propane
Gas hydrates
Ethane
Methane
Hydrates

Measuring solubility on natural gases containing sulfur species in glycol aqueous solutions using a static analytic technique

Afzal, W., Mohammadi, A. H. & Richon, D., 2008, 23th European Symposium on Applied Thermodynamics : ESAT 2008.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Measuring vapor liquid equilibria of sour gases and glycol aqueous solutions using a combined static technique

Afzal, W., Mohammadi, A. H. & Richon, D., 20 Nov 2008, 2008 Annual Meeting of American Institute of Chemical Engineers : AIChE 2008. 645i

Research output: Chapter in Book/Report/Conference proceedingConference contribution

aqueous solution
dehydration
natural gas
liquid
ethylene

Solubility study of certain sulfur species in glycol aqueous solutions (GPA 992-3): experimental vapor-liquid equilibrium data for (COS/ H2S/ MEG/ H2O) and (COS/ H2S/ TEG/ H2O) systems

Afzal, W., Mohammadi, A. H. & Richon, D., Jan 2008, Tulsa, OK: Gas Processors Association, USA. 90 p. (GPA 992-Impact of Sulfur Species on Glycol Dehydration)

Research output: Book/ReportCommissioned Report

Glycols
Sulfur
Phase equilibria
Solubility
Gases
13 Citations (Scopus)

Volumetric properties of (piperidine + water) binary system: measurements and modeling

Afzal, W., Valtz, A., Coquelet, C. & Richon, D., Jan 2008, In : The Journal of Chemical Thermodynamics. 40, 1, p. 47-53 7 p.

Research output: Contribution to journalArticle

piperidine
Density (specific gravity)
Water
water
densimeters