Skip to content

Research at St Andrews

Mixing regime simulation and cellulose particle tracing in a Stacked Frame Photocatalytic Reactor

Research output: Contribution to journalArticlepeer-review

Author(s)

Sanjay Nagarajan, Lorenzo Stella, Linda A. Lawton, John T. S. Irvine, Peter K. J. Robertson

School/Research organisations

Abstract

To sustainably meet the global energy demand, unconventional methods to produce renewable energy must emerge. Biofuels from cellulose (via fermentable sugar production) mediated via photocatalysis provides an alternative to conventional fossil fuels. In order to effectively drive photocatalytic processes an effective reactor design is required, the design of which is influenced by a number of key factors such as the catalyst to reactant ratio and residence time, catalyst illumination time, light penetration and distribution for the system, mass transfer limitations (mixing) and product recovery. In this study we use COMSOL Multiphysics® to simulate and assess one of the mentioned parameters – mixing regime of cellulose particles in a Stacked Frame Photocatalysis Reactor (SFPR). In the reactor design, we compare two mixers: a ‘plus’ shaped magnetic stirrer bar and an 8 blade Rushton impeller. The simulations reveal that the Rushton impeller offers a radial mixing pattern with a higher fluid velocity of 1.2 m/s when compared to the stirrer bar that offers a fluid velocity of 0.9 m/s. Cellulose particle tracing simulations confirm that the particle dispersion is superior in the case of the Rushton impeller as the vorticity generated during the mixing push the particles to the reactor’s walls. Since the particles are forced towards the walls, there is a probability of more particles being illuminated than in the case of no or improper mixing.
Close

Details

Original languageEnglish
Pages (from-to)301-308
Number of pages8
JournalChemical Engineering Journal
Volume313
Early online date7 Dec 2016
DOIs
Publication statusPublished - 1 Apr 2017

    Research areas

  • Photocatalysis, COMSOL, Fermentable Sugars, Mixing, Simulation

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. Non-stoichiometry, structure and properties of proton-conducting perovskite oxides

    Li, S. & Irvine, J. T. S., Mar 2021, In: Solid State Ionics. 361, 115571.

    Research output: Contribution to journalReview articlepeer-review

  2. Upscaling of co-impregnated La0.20Sr0.25Ca0.45TiO3 anodes for solid oxide fuel cells: a progress report on a decade of academic-industrial collaboration

    Price, R., Cassidy, M., Grolig, J. G., Longo, G. G., Weissen, U. G., Mai, A. G. & Irvine, J. T. S., 12 Feb 2021, In: Advanced Energy Materials. Early View, 21 p., 2003951.

    Research output: Contribution to journalReview articlepeer-review

  3. Microwave irradiation synthesis to obtain La0.7-xPrxCa0.3MnO3 perovskites: electrical and electrochemical performance

    Ferrel-Alvarez, A. C., Domínguez-Crespo, M. A., Cong, H., Torres-Huerta, A. M., Palma-Ramírez, D. & Irvine, J. T. S., 15 Jan 2021, In: Journal of Alloys and Compounds. 851, 156882.

    Research output: Contribution to journalArticlepeer-review

  4. Graphitic-C3N4 coated floating glass beads for photocatalytic destruction of synthetic and natural organic compounds in water under UV light

    Hui, J., Pestana, C. J., Caux, M., Gunaratne, H. Q. N., Edwards, C., Robertson, P. K. J., Lawton, L. A. & Irvine, J. T. S., 15 Jan 2021, In: Journal of Photochemistry and Photobiology A: Chemistry. 405, 112935.

    Research output: Contribution to journalArticlepeer-review

  5. Activation of anion redox in P3 structure cobalt-doped sodium manganese oxide via introduction of transition metal vacancies

    Kim, E. J., Mofredj, K., Pickup, D., Chadwick, A., Irvine, J. T. S. & Armstrong, R., 1 Jan 2021, In: Journal of Power Sources. 481, 229010.

    Research output: Contribution to journalArticlepeer-review

Related by journal

  1. Deactivation and regeneration of activated carbon-supported Rh and Ru catalysts in the hydrodechlorination of chloromethanes into light olefins

    Martin-Martinez, M., Rodriguez, J. J., Baker, R. T. & Gómez-Sainero, L. M., 1 Oct 2020, In: Chemical Engineering Journal. 397, 125479.

    Research output: Contribution to journalArticlepeer-review

  2. Pd and GDC Co-infiltrated LSCM cathode for high-temperature CO2 electrolysis using solid oxide electrolysis cells

    Lee, S., Woo, S. H., Shin, T. H. & Irvine, J. T. S., 13 Nov 2020, In: Chemical Engineering Journal. In press, 127706.

    Research output: Contribution to journalArticlepeer-review

  3. Boosting photocatalytic oxidation on graphitic carbon nitride for efficient photocatalysis by heterojunction with graphitic carbon units

    Abdellatif, H. R. S., Zhang, G., Wang, X., Xie, D., Irvine, J. T. S., Ni, J. & Ni, C., 29 Mar 2019, In: Chemical Engineering Journal. 370, p. 875-884 10 p.

    Research output: Contribution to journalArticlepeer-review

  4. The application of a novel fluidised photo reactor under UV-Visible and natural solar irradiation in the photocatalytic generation of hydrogen

    Skillen, N., Adams, M., McCullagh, C., Ryu, S. Y., Fina, F., Hoffman, M. R., Irvine, J. T. S. & Robertson, P. K. J., 15 Feb 2016, In: Chemical Engineering Journal. 286, p. 610-621 12 p.

    Research output: Contribution to journalArticlepeer-review

ID: 248156124

Top