Please use this identifier to cite or link to this item:
http://hdl.handle.net/1942/37701
Title: | Overcoming mass and photon transfer limitations in a scalable reactor: Oxidation in an aerosol photoreactor | Authors: | KAYAHAN, Emine Urbani, D Dambruoso, P Massi, A BRAEKEN, Leen Van Gerven , T Leblebici, ME |
Issue Date: | 2021 | Publisher: | ELSEVIER SCIENCE SA | Source: | Chemical engineering journal (1996. Print), 408 (Art N° 127357) | Abstract: | The use of microflow reactors enabled dramatic improvements in the apparent rates of photochemical reactions. However, scaling-up of photomicroreactors remains a challenge due to the difficulties of distributing light and flow to all units of photomicroreactors. In this work, the mass and photon transfer limitations of an easily scalable micro-structured reactor, an aerosol photoreactor, was studied. In this reactor concept, each droplet works as a microreactor. The nature of aerosol light interaction enables good light distribution to all the droplets. A singlet oxygen mediated photosulfoxidation reaction was utilized as a model reaction to assess the reactor performance. The light transfer limitations were proven to be overcome in the aerosol photoreactor. The reaction rate constant was calculated as 0.12 s(-1). A simple solution of the convection-diffusion equation for a droplet was presented to check for the mass transfer limitations in aerosol reactors. The Sauter mean diameters of the droplets at different pressures varied between 7 and 8 mu m. The aerosol photoreactor was proven to overcome the mass transfer limitations at these droplet diameters. In addition, the highest volumetric mass transfer coefficient (k(L)a) was calculated as 1.2 s(-1), which was at the same order of magnitude compared to other intensified photoreactors such as Corning Advanced Flow Reactors (TM) or a gas-liquid microreactor. A discussion on increasing the throughput of aerosol photoreactors further is presented. This work paves the way for efficient and scalable photoreactors for industrial use. | Keywords: | Singlet oxygen;Photoreactor;Flow photochemistry;Aerosol reactor;Mass transfer;Scale up | Document URI: | http://hdl.handle.net/1942/37701 | ISSN: | 1385-8947 | e-ISSN: | 1873-3212 | DOI: | 10.1016/j.cej.2020.127357 | ISI #: | 000613347200002 | Rights: | 2020 Elsevier B.V. All rights reserved. | Category: | A1 | Type: | Journal Contribution |
Appears in Collections: | Research publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Overcoming mass and photon transfer limitations in a scalable reactor_ Oxidation in an aerosol photoreactor.pdf Restricted Access | Published version | 9.39 MB | Adobe PDF | View/Open Request a copy |
Overcoming.pdf | Peer-reviewed author version | 1.34 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.