Mass transport and flow dispersion in the compartments of a modular 10 cell filter-press stack
Ponce de León, Carlos, Whyte, Ian, Reade, Gavin W., Male, Stewart E. and Walsh, Frank C. (2008) Mass transport and flow dispersion in the compartments of a modular 10 cell filter-press stack. Australian Journal of Chemistry, 61, (10), 797-804. (doi:10.1071/CH07161).
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Description/Abstract
Flow dispersion, pressure drop, and averaged mass transport measurements have been made to characterize the reaction environment in an industrial scale electrochemical reactor. The 10 cell filter-press stack was operated with a relatively low mean linear velocity in the range 0.6 to 6.2 cm s–1. Flow dispersion was studied by a perturbation–response technique by electrolyte conductivity measurements at the reactor outlet. Mass transport coefficients were evaluated from the first order reaction decay of dissolved bromine (Br3–) which was anodically generated from 1 mol dm–3 NaBr (aq). Each cell consisted of two 0.72 m2 projected area electrodes separated by a cationic membrane, and each electrolyte compartment contained a high-density polyolefin turbulence promoter. The electrodes consisted of a carbon/polyethylene core with a layer of an activated carbon–poly(vinylidene difluoride) composite on each side. Comparison is made with the mass transport characteristics of a similar system that contains five bipolar cells.
| Item Type: | Article |
|---|---|
| ISSNs: | 0004-9425 (print) |
| Related URLs: | |
| Keywords: | activated carbon electrode, bromide ion, bromine, energy storage, filter-press cells, flow dispersion, mass transport, pressure drop, redox flow battery, reaction environment, tribromide ion |
| Subjects: | T Technology > TP Chemical technology Q Science > QD Chemistry |
| Divisions: | University Structure - Pre August 2011 > School of Engineering Sciences > Engineering Materials & Surface Engineering |
| Item ID: | 63401 |
| Date Deposited: | 07 Oct 2008 |
| Last Modified: | 02 Mar 2012 12:13 |
| Contributors: | Ponce de León, Carlos (Author) Whyte, Ian (Author) Reade, Gavin W. (Author) Male, Stewart E. (Author) Walsh, Frank C. (Author) |
| Date: | 6 October 2008 |
| Status: | Published |
| Contact Email Address: | capla@soton.ac.uk |
| URI: | http://eprints.soton.ac.uk/id/eprint/63401 |
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