51cg

People

Dr Waheed Afzal

Dr Waheed Afzal
Dr Waheed Afzal
Dr Waheed Afzal

CEng, CSci, FIChemE, FHEA

Reader

51cg
Email Address
waheed@abdn.ac.uk
Telephone Number
+44 (0)1224 272526
School/Department
School of Engineering





Biography

With an extensive academic journey spanning across countries, including the US, France, Denmark, and Pakistan, I have dedicated my academic career to the fields of sustainable process engineering, environmental protection, safety, and clean energy.

My research primarily focuses on developing sustainable solutions to environmental challenges including carbon capture and utilization, waste valorisation, wastewater treatment, and biofuels. Through my research, I aim to reduce greenhouse gas emissions and combat climate change. 

Alongside my research, I take great pride in mentoring and educating the next generation of engineers. By emphasizing the practical application of engineering principles, I equip my students with the skills and knowledge necessary to tackle real-world environmental sustainability challenges.

As programme coordinator, I lead MSc in Process Safety Engineering and MSc in Advanced Chemical Engineering.

PgCert (2016): 51cg
Post-Doc (20010-13): University of California, Berkeley
PhD (2009): Mines Paris PSL
European PhD (2010): Mines Paris PSL and Technical University of Denmark
MS (2005) & BSc Engg (2004): Punjab University, Lahore

Memberships and Affiliations

Internal Memberships

The Senatus Academicus (Senate) 2022-26

The University Education Committee 2022-26

The Sustainable Development Committee 2022-26

External Memberships

Memberships 

Fellow of the Institution of Chemical Engineers (FIChemE)

Chartered Engineer (CEng)

Chartered Scientist (CSci)

Fellow of the Higher Education Academy (FHEA)

Senior Member of the International Association of Carbon Capture (SMIACC) Also, Vice Chair of the International Committee on Industrial Energy Conservation, Emission Reduction and Pollutant Treatment of IACC) 

 

External Services

Senior Assessor/ Assessor of IChemE Accreditation (2021–date)

Assessor of Cypriot Universities and Programs: Cyprus Agency of Quality Assurance and Accreditation in Higher Education (2023-date)

Chair of Task & Finish Group for Chartered Engr as CEng PPSE, IChemE (2021–22)

External Examiner, University of Manchester (2021–25); Teesside University (2018-2023)

Guest Editor, Special Issue on Recycling of Waste Plastics, Molecules (2021–22)

Member, Panel for Chartered Chemical Engineer Membership, IChemE (2020–2024)

Assessor and Panel Member, CEng and PPSE (Individual Case Procedure): IChemE (2020-2024) 

PhD Examiner, Several Universities including those of Aberdeen, Edinburgh, Strathclyde, Exeter,  Teesside, and oversease (2015-date)

 

Latest Publications

  • Engineering the microbial-electrochemical interface: synergistic of co-fe nano biochar composites for enhanced electron channelling to alter the metabolic pathway in light-driven biohydrogen production

    Tahir, N., Ramzan, H., Nadeem, F., Usman, M., Shahzaib, M., Rahman, M. U., Liu, Y., Afzal, W., Lam, S. S., Zhang, Z.
    Biochar, vol. 8, no. 1, 31
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [ONLINE]

  • Circular Management of Single-Use Polyolefins via Hydrocracking with Zeolite-Based Catalysts

    Azam, M. U., Umer, M., Biscaya Semedo Pereira da Graca, I., Afzal, W.
    Polymer Circularity in Sustainable Energy. Thomas, S., Ameduri, B., Thomas, J., Thomas, M. G. (eds.). 1 edition. Elsevier
    Chapters in Books, Reports and Conference Proceedings: Chapters

  • Availability and spatial distribution of crop and forest biomass residues for biochar production in Kenya

    Namaswa, T. W., Burslem, D., Smith, J., Afzal, W., Wardle, J., Oduor, N., Kubok, L., Muthike, G., Malei, F.
    Scientific Reports, vol. 16, 11764
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • Delignification of recycled fermentative residues to enhance biohydrogen production via hydrothermal and ethylene glycol thermal pretreatments: an approach towards zero-waste

    Shahzaib, M., Usman, M., Ramzan, H., Rahman, M. U., Yang, L., Afzal, W., Yi, W., Liu, S., Tahir, N.
    Renewable Energy, vol. 257, 124733
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [ONLINE]

  • Performance comparison and sustainability assessment of mesoporous FAU zeolites for the plastic upcycling

    Azam, M. U., Kim, N. G., Fernandes, A., Ribeiro, M. F., Afzal, W., Graça, I.
    Chemical Engineering Journal, vol. 527, 172045
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

View My Publications

Prizes and Awards

European Doctorate (2010)

Research

Research Overview

Low carbon cement and construction material; mineral Carbon capture and utilization; clean energy technologies; waste valorization; waste plastics

Current Research

Post Doactoral Scholars: 

  1. Dr Lei Zhang, Exchange academic from Northeast Electric Power University, China, under CSC.

  2. Dr Maria-Ara Carballo-Meilan (2018-19), Precipitated calcium Carbonate Products (OMYA RG 14551), 51cg

  3. Dr Mohsin A Raza (2022-23), Renewable energy integration in farming and agriculture (KT Associate) ANM Group and 51cg

Current PhDs: 

  1. Ali Falah Al-Saedi. PhD in Chemical Engineering, Lead supervisor

  2. Nanbyen George Kim. PhD in Chemical Engineering, Lead supervisor

  3. Saman Hameed. PhD in Chemical Engineering, Lead supervisor

  4. Abdullahi Muhammad Mustapha. PhD in Chemical Engineering, Supervisor 

  5. Rukayat Oyiza Salawu. PhD in Chemical Engineering, Lead supervisor

  6. Muhammad Tanweer Khan. MSc by Research in Engineering (distance learning)

Successful PhDs: 

  1. Z. Zanna Ibrahim (2026). Development of thermally stable water-based drilling fluids with enhanced filtration properties for elevated temperature wells. PhD. Lead supervisor: H. Hamidi; co-supervisor: W. Afzal.
  2. T. W. Namaswa (2026). Optimization of biochar production from crop and forest residues for use as soil amendment and bioenergy for integrated climate action. PhD. Lead supervisor: D. Burslem; co-supervisors: J. Smith and W. Afzal.
  3. B. Bhattarai (2024). Aerobic biodegradation of xenobiotic and process optimisation with open mixed microbial cultures in sequencing batch and batch reactors. PhD. Lead supervisor: W. Afzal; co-supervisor: D. Dionisi.
  4. M. U. Azam (2024). Sustainable solutions for the chemical recycling of waste plastics to liquid fuels. PhD. Lead supervisor: W. Afzal; co-supervisor: I. Graça.
  5. L. McDonald (2022). Low carbon cements with precipitated calcium carbonate as sustainable supplementary cementitious material. PhD. Lead supervisor: W. Afzal.
  6. W. Pragot (2021). Mineral carbon capture and conversion into useful products: an experimental and ecological study. PhD. Lead supervisor: W. Afzal.
  7. M. M. Yassin (2021). Feasibility study of microwave-assisted swing adsorption for post-combustion carbon capture. PhD. Lead supervisor: C. Fernandez Martin; co-supervisor: W. Afzal.
  8. M. A. Raza (2020). Thermodynamics and transport properties of biomass-based chemicals for the applications in energy and environment. PhD. Lead supervisor: W. Afzal; co-supervisor: P. Hallett.
  9. P. Sidi (2018). Investigating the suitability of Eichhornia crassipes for use in drilling fluids. PhD. Lead supervisor: W. Afzal; co-supervisor: P. Hallett.
  10. D. Munir (2018). Catalytic hydrocracking of waste plastics to liquid fuels. PhD. Lead supervisor: M. R. Usman; co-supervisor: W. Afzal.
  11. M. S. Akram (2018). Kinetic study and reactor simulation of methylcyclohexane dehydrogenation reaction for a mobile power plant. PhD. Lead supervisor: M. R. Usman; co-supervisor: W. Afzal.
  12. G. A. R. Ramos (2018). Neuro-fuzzy based screening for EOR projects and experimental investigation of identified techniques in oilfield operations. PhD. Lead supervisor: L. Akanji; co-supervisor: W. Afzal.
  13. S. Y. Khawaja (2014). Factors influencing the extraction efficiency in a pulsed sieve-plate extraction column. PhD. Lead supervisor: N. A. Akhtar; co-supervisors: M. R. Usman and W. Afzal.
  14. M. I. Elnashar (2025) MSc by Research. Safety and risk assessment of green hydrogen production using PEM water electrolysis. Master by Research. Lead supervisor: H. Tan; co-supervisor: W. Afzal.

Past Research

Fluid-phase equilibria and thermophysical properties; conversion of lignocellulosic biomass to liquid fuels; applications of ionic liquids in chemical processes; Impact of sulphur species on oil and gas systems; gas hydrates; gas processing

 

Knowledge Exchange

Aberdeen Engineering Innovations Limited (Ab Enginns Ltd)
Co-Founder (Along with Prof Dionisi)

Carbon Capture Machine Limited (CCM UK)
Team member with Dr Imbabi, Sold by 51cg in 2023. 

Collaborations

Prof. Christophe Coquelet, Director of Process Thermodynamics, Department of Energy and Processes, École des Mines de Paris (MINES ParisTech)

Prof. Georgios Kontogeorgis, Department of Chemical and Biochemical Engineering, Technical University of Denmark

Prof. Paul Hallett, School of Biological Sciences, 51cg

Funding and Grants

Current and Recent External Grants

Grant ‘Add Your Value Application’ to European Commission: Successful £47,179 (Co-I along with several other colleagues). 2019-21

Grant 'Integral Process Optimization for Sustainable Offshore-Structure Dismantling Yard Operation Application', Royal Academy of Engineering: £79,934- (Co-with three other colleagues). 2019-2021

Grant, 'Carbon utilization in high-value precipitated calcium carbonate under low solid conditions' £100,000 PI, 2018- 2019

Scottish Funding Council through the Northern Research Partnership, Sulphur species in fuel products and environment, £4000, PI, 2016-2017

Scottish Funding Council, Micro wind turbine with carbon capture module, £5000 PI, 2015-2016

Travel Grant: Santander Mobility Grant, Raman spectroscopy in carbon capture, Visit of Germany, December 2016

Travel Grant: British Council Researcher Links, Renewable energy technology: future, opportunity, and challenges for the UK and Turkey, Istanbul 4-7 April 2016

Travel Grant: UK Carbon Capture and Storage Research Centre, CCS in the UK - Moving Forward, Manchester Biannual, Manchester 13-14 April 2016

Teaching

Programmes

Courses

Teaching Responsibilities

Programme Design and Leadership

Programme Coordinator:

MSc Advanced Chemical Engineering

MSc Process Safety

 

Current Teaching

MSc: Separations & Product Purification (Coordinator and Contributor)

MSc: Safety & Risk Management (Contributor and Coordinator)

MSc: Human Factors Engineering (Contributor and Coordinator)

BEng/MEng: Biochemical Engineering (Contributor)

BEng/MEng: Chemical Engineering Design (Contributor)

MEng: Group Design Project in Chemical Engineering (Contributor)

BEng/MEng/MSc: individual Research Projects

Research Supervision 

Personal Tutor

Teaching in the Recent Past

Process Risk Identification & Management

Energy Conversion and Storage

Advanced Process Dynamics and Control-Theory

Process Dynamics and Control-Theory

Process Instrumentation and Control-Lab

Publications

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  • Engineering the microbial-electrochemical interface: synergistic of co-fe nano biochar composites for enhanced electron channelling to alter the metabolic pathway in light-driven biohydrogen production

    Tahir, N., Ramzan, H., Nadeem, F., Usman, M., Shahzaib, M., Rahman, M. U., Liu, Y., Afzal, W., Lam, S. S., Zhang, Z.
    Biochar, vol. 8, no. 1, 31
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [ONLINE]

  • Circular Management of Single-Use Polyolefins via Hydrocracking with Zeolite-Based Catalysts

    Azam, M. U., Umer, M., Biscaya Semedo Pereira da Graca, I., Afzal, W.
    Polymer Circularity in Sustainable Energy. Thomas, S., Ameduri, B., Thomas, J., Thomas, M. G. (eds.). 1 edition. Elsevier
    Chapters in Books, Reports and Conference Proceedings: Chapters

  • Availability and spatial distribution of crop and forest biomass residues for biochar production in Kenya

    Namaswa, T. W., Burslem, D., Smith, J., Afzal, W., Wardle, J., Oduor, N., Kubok, L., Muthike, G., Malei, F.
    Scientific Reports, vol. 16, 11764
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • Delignification of recycled fermentative residues to enhance biohydrogen production via hydrothermal and ethylene glycol thermal pretreatments: an approach towards zero-waste

    Shahzaib, M., Usman, M., Ramzan, H., Rahman, M. U., Yang, L., Afzal, W., Yi, W., Liu, S., Tahir, N.
    Renewable Energy, vol. 257, 124733
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [ONLINE]

  • Performance comparison and sustainability assessment of mesoporous FAU zeolites for the plastic upcycling

    Azam, M. U., Kim, N. G., Fernandes, A., Ribeiro, M. F., Afzal, W., Graça, I.
    Chemical Engineering Journal, vol. 527, 172045
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • Systematic review using a semi-supervised bibliometric methodology for application in a precipitation process

    Carballo-Meilan, A., McDonald, L., Pragot, W., Starnawski, L. M., Saleemi, A. N., Afzal, W.
    Expert Systems with Applications, vol. 284, 127944
    Contributions to Journals: Articles
    • [ONLINE] DOI:

  • Double cations modified clinoptilolite enhancing the adsorption separation of CH4 and N2

    Liu, X., Wang, P., Huang, S., Wang, D., Afzal, W., He, M.
    Gas Science and Engineering, vol. 138, 205594
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [ONLINE]

  • The role of cross-linkers in the performance of anion exchange membrane for fuel cell applications

    Qaisrani, N. A., Afzal, W., Khalid, U., Qaisrani, M. M., Azeem, S., Ahmad, A., Ma, L., Li, L., Zhang, F.
    Colloids and Surfaces A: Physicochemical and Engineering Aspects, vol. 705, no. Part 1, 135561
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [ONLINE]

  • Unlocking the Structure-Activity Relationship of Hierarchical MFI Zeolites Towards the Hydrocracking of HDPE

    Azam, M. U., Fernandes, A., Ferreira, M. J., McCue, A., Graca, I., Afzal, W.
    Fuel, vol. 379, 132990
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • Life Cycle Assessment Method Applied to a Carbon-Negative Energy Process

    Usman, M. R., Azam, M. U., Khawaja, S., Afzal, W.
    Encyclopedia of Renewable Energy Engineering. Blaabjerg, F. (ed.). 1st edition. Elsevier
    Chapters in Books, Reports and Conference Proceedings: Chapters
    • [ONLINE]

  • Synergy of the heterojunction and defects engineering in Zr-doped TbFeO3@g-C3N4 photo-nanocatalyst towards enhanced visible-light-driven antibiotics degradation and H2 production

    Rahman, M. U., Nadeem, F., Ramzan, H., Shen, F., Usman, M., Shahzaib, M., Afzal, W., Liu, S., Tao, H., Zhang, Z., Zhang, Q., Tahir, N.
    Composites Part B: Engineering, vol. 287, 111865
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [ONLINE]

  • Investigating the effects of nano-Fe₃O₄ and MWCNTs on the filtration and rheological properties of water-based muds at elevated temperature and pressure

    Zanna Ibrahim, Z., Hamidi, H., Afzal, W., Yildirim, M. H.
    Colloids and Surfaces A: Physicochemical and Engineering Aspects, vol. 701, 134912
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • Performance of a novel waste heat-powered ionic liquid-based CO2 capture and liquefaction system for large-scale shipping

    Huang, S., Wang, P., Chu, J., Afzal, W., Liu, X., Lu, Z., Long, J., He, M.
    Chemical Engineering Journal, vol. 499, 155911
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [ONLINE]

  • Pore-structure Engineering of Hierarchical Beta Zeolites for the Enhanced Hydrocracking of Waste Plastics to Liquid Fuels

    Azam, M. U., Fernandes, A., Ferreira, M. J., Afzal, W., Biscaya Semedo Pereira da Graca, I.
    ACS Catalysis, vol. 14, no. 21, pp. 16148-16165
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]
    • [ONLINE]

  • Biodegradation of glucose and paracetamol and process optimisation with open mixed microbial cultures in lab-scale sequencing batch reactors

    Bhattarai, B., Dionisi, D., Afzal, W.
    Journal of Water Process Engineering, vol. 67, 106224
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • Safety assessment of hydrogen production using alkaline water electrolysis

    Muthiah, M., Elnashar, M., Afzal, W., Tan, H.
    International Journal of Hydrogen Energy, vol. 84, pp. 803-821
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • Insights into the development of greener mild zeolite dealumination routes applied to the hydrocracking of waste plastics

    Azam, M. U., Afzal, W., Fernandes, A., Biscaya Semedo Pereira da Graca, I.
    Applied Catalysis A: General, vol. 685, 119873
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • Advancing Plastic Recycling: A Review on the Synthesis and Applications of Hierarchical Zeolites in Waste Plastic Hydrocracking

    Azam, M. U., Afzal, W., Graça, I.
    Catalysts, vol. 14, no. 7, 450
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • Investigating the quantum size effects of multi-walled carbon nanotubes (MWCNTs) in photocatalytic fermentative biohydrogen production

    Ramzan, H., Nadeem, F., Usman, M., Shahzaib, M., Ur Rahman, M., Shen, F., Zhang, Z., Singhania, R. R., Jabeen, F., Afzal, W., Tahir, N.
    Journal of Cleaner Production, vol. 449, 141738
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [ONLINE]

  • The Study of The Sealing Performance of Fibrous-Laden Drilling Fluid Over Simulated Lost Zone Under Overbalanced Pressure Conditions

    Purnomosidi, , Hallett, P. D., Afzal, W., Indriani, E.
    Scientific Contributions Oil and Gas, vol. 47, no. 1, pp. 1-6
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]
    • [ONLINE]

  • Maximizing the potential of biohydrogen production through cyclic photo fermentation: An approach towards zero waste

    Shahzaib, M., Nadeem, F., Ramzan, H., Usman, M., Ur Rahman, M., Singhania, R. R., Afzal, W., Zhang, Z., Tahir, N.
    Energy Conversion and Management, vol. 304, 118234
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [ONLINE]
    • [ONLINE]

  • Plant Biomass Seed and Root Mucilage: Extraction and Properties

    Raza, M., Hallett, P., Afzal, W.
    Plant Biomass Derived Materials: Sources, Extractions, and Applications. Sabu, T., Seiko, J., Sneha Sabu, M., Lata, S. (eds.). 1 edition. Wiley - VCH Verlag GmbH & CO. KGaA, pp. 141-158, 18 pages
    Chapters in Books, Reports and Conference Proceedings: Chapters
    • [ONLINE] DOI:
    • [ONLINE]

  • Insights into the development of greener hierarchical zeolites applied to the hydrocracking of plastic waste

    Azam, M. U., Biscaya Semedo Pereira da Graca, I., Afzal, W.
    UK Catalysis Hub Winter Conference
    Contributions to Conferences: Posters

  • Insights into the development of greener hierarchical zeolites applied to the hydrocracking of plastic waste

    Azam, M. U., Biscaya Semedo Pereira da Graca, I., Afzal, W.
    Contributions to Conferences: Oral Presentations
    • [ONLINE]
    • [ONLINE]

  • Comparison between batch aerobic biodegradation of paracetamol and glucose with open mixed microbial cultures: experimental data and kinetic modelling

    Bhattarai, B., Dionisi, D., Afzal, W.
    Journal of Water Process Engineering, vol. 55, 10477
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • Hydrocracking of surgical face masks over Y zeolites: catalyst development, process design and life cycle assessment

    Azam, M. U., Fernandes, A., Graca, I., Afzal, W.
    Fuel, vol. 349, 128704
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • Meta-Analysis of Vaterite Secondary Data Revealed the Synthesis Conditions for Polymorphic Control

    Carballo-Meilan, M., Starnawski, L. M., Mcdonald, L., Pragot, W., Saleemi, A. N., Afzal, W.
    Chemical Engineering Research & Design, vol. 188, pp. 668-680
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • Process simulation and life cycle assessment of waste plastics: a comparison of pyrolysis and hydrocracking

    Azam, M. U., Vete, A., Afzal, W.
    Molecules, vol. 27, no. 22, 8084
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • Effect of Adding Monohydrocalcite on the Microstructural Change in Cement Hydration

    Pragot, W., Carballo-Meilan, M., McDonald, L., Photong, C., Afzal, W.
    ACS Omega, vol. 7, no. 41, pp. 36318–36329
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]
    • [ONLINE]

  • Development of a Data-Driven Scientific Methodology: From Articles to Chemometric Data Products

    Carballo-Meilan, M., McDonald, L., Pragot, W., Starnawski, L. M., Saleemi, A. N., Afzal, W.
    Chemometrics and Intelligent Laboratory Systems, vol. 225, 104555
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • Modelling co-gasification of plastic waste and lignin in supercritical water using reactive molecular dynamics simulations

    Wang, T., Liu, X., Huang, S., Afzal, W., He, M.
    International Journal of Hydrogen Energy, vol. 47, no. 49, pp. 21060-21066
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • Evidence of scawtite and tilleyite formation at ambient conditions in hydrated Portland cement blended with freshly-precipitated nano-size calcium carbonate to reduce greenhouse gas emissions

    McDonald, L. J., Afzal, W., Glasser, F. P.
    Journal of Building Engineering, vol. 48, 103906
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]
    • [ONLINE]

  • Simulation of softwood lignin gasification in supercritical carbon dioxide

    Wang, T., Liu, X., Xu, J., Afzal, W., He, M.
    Journal of CO2 Utilization, vol. 59, 101959
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • The physicochemical properties of Portland cement blended with calcium carbonate with different morphologies as a supplementary cementitious material

    McDonald, L., Carballo-Meilan, M., Chacartegui, R., Afzal, W.
    Journal of Cleaner Production, vol. 338, 130309
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • A systematic analysis of the dynamics of microwave- and conventionally-assisted swing adsorption on zeolite 13X and an activated carbon under post-combustion carbon capture conditions

    Yassin, M. M., Biti, S., Afzal, W., Fernández Martín, C.
    Journal of Environmental Chemical Engineering, vol. 9, no. 6, 106835
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]
    • [ONLINE]

  • A comparative analysis of microwave-assisted regeneration against conventional regeneration for post-combustion carbon capture

    Yassin, M., Biti, S., Afzal, W., Fernandez Martin, C.
    Chapters in Books, Reports and Conference Proceedings: Conference Proceedings
    • [ONLINE] DOI:
    • [OPEN ACCESS]
    • [ONLINE]

  • A modified human reliability analysis method for the estimation of human error probability in the offloading operations at oil terminals

    Zhang, R., Tan, H., Afzal, W.
    Process Safety Progress, vol. 40, no. 3, pp. 84-92
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [ONLINE]

  • Volumetric Properties of Furan and 2‑5-Dimethylfuran in Different Industrial Solvents at Temperatures from 278 to 343 K

    Raza, M., Valtz, A., Coquelet, C., Hallett, P., Afzal, W.
    Journal of Chemical and Engineering Data, vol. 66, no. 7, pp. 2666-2680
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • Ecological study of a mineral carbon capture and conversion process

    Pragot, W., Carballo-Meilan, M., Afzal, W.
    EYEC Monograph: 9th European Young Engineers Conference, pp. 52-68, 17 pages
    Chapters in Books, Reports and Conference Proceedings: Chapters
    • [ONLINE]

  • Sodium carbonate-based post combustion carbon capture utilising trona as main sorbent feed stock

    Furcas, F., Pragot, W., Chacartegui, R., Afzal, W.
    Energy Conversion and Management, vol. 208, 112484
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]
    • [ONLINE]

  • A Novel Surfactant–Polymer/Alkaline–Surfactant–Polymer Formulation for Enhanced Oil Recovery (EOR) Processes

    Ramos, G. A. R., Akanji, L., Afzal, W.
    Energy & Fuels, vol. 34, no. 2, pp. 1230-1239
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]
    • [ONLINE]

  • Surface Tension of Aqueous Solutions of Small-Chain Amino and Organic Acids

    Raza, M., Hallett, P. D., Liu, X., He, M., Afzal, W.
    Journal of Chemical and Engineering Data, vol. 64, no. 12, pp. 5049-5056
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]
    • [ONLINE]

  • Microwave-assisted regeneration of solid adsorbents for CO2 capture in post-combustion processes

    Yassin, M. M., Anderson, J., Afzal, W., Fernandez Martin, C.
    Contributions to Conferences: Papers
    • [ONLINE]

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

    Zhu, C., Yang, F., Liu, X., Afzal, W., He, M.
    Fuel, vol. 241, pp. 218-226
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]
    • [ONLINE]

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

    Gao, S., Chen, X., Xi, X., Abro, M., Afzal, W., Abro, R., Yu, G.
    ACS Sustainable Chemistry & Engineering, vol. 7, no. 6, pp. 5660-5668
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]
    • [ONLINE]
    • [ONLINE]

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

    Afzal, W., Valtz, A., Coquelet, C.
    Journal of Natural Gas Engineering, vol. 3, no. 2, pp. 96-108
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]
    • [ONLINE]

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

    Ramos, G. A. R., Akanji, L., Afzal, W.
    Contributions to Conferences: Papers

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

    Ramos, G. A. R., Akanji, L., Afzal, W.
    Contributions to Conferences: Oral Presentations
    • [ONLINE]

  • 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.
    Renewable and Sustainable Energy Reviews, vol. 81, no. 1, pp. 1247-1258
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]
    • [ONLINE]

  • 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.
    International Journal of Industrial Chemistry, vol. 8, no. 4, pp. 397-410
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

  • 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.
    Journal of Chemical and Engineering Data, vol. 62, no. 4, pp. 1198-1203
    Contributions to Journals: Articles
    • [ONLINE] DOI:
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  • Physical data for a process to separate krypton from air by selective absorption in an ionic liquid

    Afzal, W., Liu, X., Prausnitz, J. M.
    Fluid Phase Equilibria, vol. 404, pp. 124-130
    Contributions to Journals: Articles
    • [ONLINE] DOI:

  • 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.
    Biotechnology and Bioprocess Engineering, vol. 20, no. 2, pp. 304-314
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]
    • [OPEN ACCESS]

  • Pretreatment of Miscanthus giganteus with Lime and Oxidants for Biofuels

    Yang, F., Liu, Z., Afzal, W., Bell, A. T., Prausnitz, J. M.
    Energy & Fuels, vol. 29, no. 3, pp. 1743-1750
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [OPEN ACCESS]

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

    Liu, X., Afzal, W., He, M., Prausnitz, J. M.
    AIChE Journal, vol. 60, no. 7, pp. 2607-2612
    Contributions to Journals: Articles
    • [ONLINE] DOI:

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

    Awwad, N., Liu, X., Afzal, W., Prausnitz, J. M.
    Zeitschrift für Physikalische Chemie, vol. 228, no. 8, pp. 839-850
    Contributions to Journals: Articles
    • [ONLINE] DOI:

  • 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.
    Journal of Chemical Technology & Biotechnology, vol. 89, no. 5, pp. 698-706
    Contributions to Journals: Articles
    • [ONLINE] DOI:

  • High Solubilities of Carbon Dioxide in Tetraalkyl Phosphonium-Based Ionic Liquids and the Effect of Diluents on Viscosity and Solubility

    Afzal, W., Liu, X., Prausnitz, J. M.
    Journal of Chemical and Engineering Data, vol. 59, no. 4, pp. 954-960
    Contributions to Journals: Articles
    • [ONLINE] DOI:

  • Unusual trend of viscosities and densities for four ionic liquids containing a tetraalkyl phosphonium cation and the anion bis (2, 4, 4-trimethylpentyl) phosphinate

    Liu, X., Afzal, W., Prausnitz, J. M.
    The Journal of Chemical Thermodynamics, vol. 70, pp. 122-126
    Contributions to Journals: Articles
    • [ONLINE] DOI:

  • 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.
    Energy & Fuels, vol. 28, no. 1, pp. 542-548
    Contributions to Journals: Articles
    • [ONLINE] DOI:

  • 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.
    Industrial & Engineering Chemistry Research, vol. 53, no. 1, pp. 363-368
    Contributions to Journals: Articles
    • [ONLINE] DOI:

  • 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.
    Chapters in Books, Reports and Conference Proceedings: Conference Proceedings
    • [ONLINE]

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

    Liu, X., Afzal, W., Gilbert, Y., Prausnitz, J. M.
    Chapters in Books, Reports and Conference Proceedings: Conference Proceedings
    • [ONLINE]

  • Solubilities of small hydrocarbons in tetrabutylphosphonium bis (2, 4, 4-trimethylpentyl) phosphinate and in 1-ethyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide

    Liu, X., Afzal, W., Prausnitz, J. M.
    Industrial & Engineering Chemistry Research, vol. 52, no. 42, pp. 14975-14978
    Contributions to Journals: Articles
    • [ONLINE] DOI:

  • 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.
    The Journal of Physical Chemistry B, vol. 117, no. 36, pp. 10534-10539
    Contributions to Journals: Articles
    • [ONLINE] DOI:

  • Solubilities of some gases in four immidazolium-based ionic liquids

    Afzal, W., Liu, X., Prausnitz, J. M.
    The Journal of Chemical Thermodynamics, vol. 63, pp. 88-94
    Contributions to Journals: Articles
    • [ONLINE] DOI:

  • Henry’s constants and activity coefficients of some organic solutes in 1-butyl, 3-methylimidazolium hydrogen sulfate and in 1-methyl, 3-trimethylsilylmethylimidazolium chloride

    Yoo, B., Afzal, W., Prausnitz, J. M.
    The Journal of Chemical Thermodynamics, vol. 57, pp. 178-181
    Contributions to Journals: Articles
    • [ONLINE] DOI:

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

    Khawaja, S., Usman, M., Khan, S., Afzal, W., Akhtar, N.
    Separation Science and Technology, vol. 48, no. 1, pp. 175-182
    Contributions to Journals: Articles
    • [ONLINE] DOI:

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

    Yoo, B., Afzal, W., Prausnitz, J. M.
    Zeitschrift für Physikalische Chemie, vol. 227, no. 2-3, pp. 157-166
    Contributions to Journals: Articles
    • [ONLINE]

  • Four methods for measuring the solubilities of gases and vapors in liquids and polymers

    Afzal, W., Prausnitz, J.
    ВЕСТНИК САНКТ-ПЕТЕРБУРГСКОГО УНИВЕРСИТЕТА, no. 1, pp. 16-31
    Contributions to Journals: Articles
    • [OPEN ACCESS]
    • [OPEN ACCESS]

  • Saccharification of Miscanthus $ Giganteus With Dilute Nitric Acid

    Yang, F., Afzal, W., Liu, N., Cheng, K., Bell, A. T., Prausnitz, J. M., Pauly, M.
    2013 Annual Meeting of the American Institute of Chemical Engineers (AIChE)
    Contributions to Conferences: Abstracts
    • [ONLINE]

  • Solubility parameters for nine ionic liquids

    Yoo, B., Afzal, W., Prausnitz, J. M.
    Industrial & Engineering Chemistry Research, vol. 51, no. 29, pp. 9913-9917
    Contributions to Journals: Articles
    • [ONLINE] DOI:

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

    Rosenboom, J., Afzal, W., Prausnitz, J. M.
    The Journal of Chemical Thermodynamics, vol. 47, pp. 320-327
    Contributions to Journals: Articles
    • [ONLINE] DOI:

  • 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.
    Fluid Phase Equilibria, vol. 318, pp. 40-50
    Contributions to Journals: Articles
    • [ONLINE] DOI:

  • Inert-gas stripping method for measuring solubilities of sparingly-soluble gases in liquids: Solubilities of some gases in protic ionic liquid 1-butyl, 3-hydrogen-imidazolium acetate

    Afzal, W., Yoo, B., Prausnitz, J. M.
    Industrial & Engineering Chemistry Research, vol. 51, no. 11, pp. 4433-4439
    Contributions to Journals: Articles
    • [ONLINE]

  • 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.
    Journal of Faculty of Engineering Technology, vol. 18, no. 1, pp. 1-11
    Contributions to Journals: Articles
    • [ONLINE]
    • [OPEN ACCESS]

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

    Afzal, W., Mohammadi, A. H., Richon, D., Kontogeorgis, G. M.
    Chapters in Books, Reports and Conference Proceedings: Conference Proceedings
    • [ONLINE]

  • 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.
    Industrial & Engineering Chemistry Research, vol. 48, no. 24, pp. 11202-11210
    Contributions to Journals: Articles
    • [ONLINE] DOI:

  • Drop size in a liquid pulsed sieve-plate extraction column

    Usman, M. R., Sattar, H., Hussain, S., Muhammad, H., Asghar, A., Afzal, W.
    Brazilian Journal of Chemical Engineering, vol. 26, no. 4, pp. 677-683
    Contributions to Journals: Articles
    • [ONLINE] DOI:
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  • Volumetric properties of mono-, di-, tri-, and polyethylene glycol aqueous solutions from (273.15 to 363.15) k: Experimental measurements and correlations

    Afzal, W., Mohammadi, A. H., Richon, D.
    Journal of Chemical and Engineering Data, vol. 54, no. 4, pp. 1254-1261
    Contributions to Journals: Articles
    • [ONLINE] DOI:

  • Estimation of the impact of sulfur species on glycol dehydration

    Afzal, W., Breil, M. P., Mohammadi, A. H., Kontogeorgis, G., Richon, D.
    Chapters in Books, Reports and Conference Proceedings: Conference Proceedings

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

    Afzal, W.
    MINES ParisTech. 140 pages
    Books and Reports: Other Reports
    • [ONLINE]

  • Gas hydrates of methane, ethane, propane, and carbon dioxide in the presence of single NaCl, KCl, and CaCl2 aqueous solutions: experimental measurements and predictions of dissociation conditions

    Mohammadi, A. H., Afzal, W., Richon, D.
    The Journal of Chemical Thermodynamics, vol. 40, no. 12, pp. 1693-1697
    Contributions to Journals: Articles
    • [ONLINE] DOI:

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

    Afzal, W., Mohammadi, A. H., Richon, D.
    Chapters in Books, Reports and Conference Proceedings: Conference Proceedings
    • [ONLINE]

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

    Mohammadi, A. H., Afzal, W., Richon, D.
    Industrial & Engineering Chemistry Research, vol. 47, no. 9, pp. 3225-3232
    Contributions to Journals: Articles
    • [ONLINE] DOI:

  • Experimental data and predictions of dissociation conditions for ethane and propane simple hydrates in the presence of methanol, ethylene glycol, and triethylene glycol aqueous solutions

    Mohammadi, A. H., Afzal, W., Richon, D.
    Journal of Chemical and Engineering Data, vol. 53, no. 3, pp. 683-686
    Contributions to Journals: Articles
    • [ONLINE] DOI:

  • Experimental measurements and predictions of dissociation conditions for methane, ethane, propane, and carbon dioxide simple hydrates in the presence of diethylene glycol aqueous solutions

    Afzal, W., Mohammadi, A. H., Richon, D.
    Journal of Chemical and Engineering Data, vol. 53, no. 3, pp. 663-666
    Contributions to Journals: Articles
    • [ONLINE] DOI:

  • Experimental data and predictions of dissociation conditions for ethane and propane simple hydrates in the presence of distilled water and methane, ethane, propane, and carbon dioxide simple hydrates in the presence of ethanol aqueous solutions

    Mohammadi, A. H., Afzal, W., Richon, D.
    Journal of Chemical and Engineering Data, vol. 53, no. 1, pp. 73-76
    Contributions to Journals: Articles
    • [ONLINE] DOI:

  • 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.
    Commissioned by Gas Processors Association. Tulsa, OK: Gas Processors Association, USA. 90 pages
    Books and Reports: Commissioned Reports
    • [ONLINE]

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

    Afzal, W., Valtz, A., Coquelet, C., Richon, D.
    The Journal of Chemical Thermodynamics, vol. 40, no. 1, pp. 47-53
    Contributions to Journals: Articles
    • [ONLINE] DOI:

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

    Afzal, W., Mohammadi, A. H., Richon, D.
    Contributions to Conferences: Other Contributions

  • Measuring vapor-liquid equilibria in sour gas + glycol aqueous solution using static techniques

    Afzal, W., Mohammadi, A., Richon, D.
    Chapters in Books, Reports and Conference Proceedings: Conference Proceedings
    • [ONLINE]
    • [ONLINE]

  • Useful remarks to reduce experimental information required to determine water content of gas in equilibrium with gas hydrate, ice or liquid water

    Mohammadi, A., Afzal, W., Richon, D.
    Industrial & Engineering Chemistry Research, vol. 47, no. 1, pp. 7-15
    Contributions to Journals: Articles
    • [ONLINE] DOI:
    • [ONLINE]

  • Experimental measurements and predictions of dissociation conditions for carbon dioxide and methane hydrates in the presence of triethylene glycol aqueous solutions

    Afzal, W., Mohammadi, A. H., Richon, D.
    Journal of Chemical and Engineering Data, vol. 52, no. 5, pp. 2053-2055
    Contributions to Journals: Articles
    • [ONLINE] DOI:

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