The effect of operational parameters on the performance of a bipolar trickle tower reactor
The effect of operational parameters on the performance of a bipolar trickle tower reactor
A bipolar trickle tower reactor (BTTR) (of 7.9 cm internal diameter and 75 cm length containing 57 layers, each layer having 30 carbon Raschig rings, each of 1.25 cm outside diameter) has been studied under a range of operational conditions. The batch recycle mode of operation has been used for the removal of Cu(II) ions (at an initial concentration of 50-200 ppm) from an acid sulfate solution (typically 3000 cm3) at 295 K. Non-ideal flow and Peclet number values have been considered to establish the degree of deviation from ideal reactor flow models. Operational variables included the potential difference per layer (1.0-3.0 V), volumetric flow rate (8.3-50 cm3 s-1) and the effect of H2SO4 concentration (which increased conductivity and lowered pH) in the electrolyte. The reactor has been shown to be best suited to the treatment of a moderately high reactant concentration (eg 100-200 ppm) and low electrolyte conductivity. The final concentration can be as low as a few parts per million but the performance of the reactor (as judged by the current efficiency and the rate of concentration decay) markedly decreased as the dissolved metal ion concentration fell.
bipolar trickle tower reactor, cu(II) ion removal, current efficiency, environmental treatment, flow dispersion, mass transport and electrode area, normalised space velocity
954-960
Trinidad, Pedro
db713140-24d9-4bab-ba1d-a9231edcf919
Walsh, Frank C.
309528e7-062e-439b-af40-9309bc91efb2
Sheppard, Sally A.
d605ef13-ba07-4c4d-b657-9ed250e08b6b
Gillard, Stephen P.
c1c47958-5783-4a6c-9239-5758f4ce4b66
Campbell, Sheelagh A.
93adc979-68e2-46d8-8fad-b9e7b1f971dd
2004
Trinidad, Pedro
db713140-24d9-4bab-ba1d-a9231edcf919
Walsh, Frank C.
309528e7-062e-439b-af40-9309bc91efb2
Sheppard, Sally A.
d605ef13-ba07-4c4d-b657-9ed250e08b6b
Gillard, Stephen P.
c1c47958-5783-4a6c-9239-5758f4ce4b66
Campbell, Sheelagh A.
93adc979-68e2-46d8-8fad-b9e7b1f971dd
Trinidad, Pedro, Walsh, Frank C., Sheppard, Sally A., Gillard, Stephen P. and Campbell, Sheelagh A.
(2004)
The effect of operational parameters on the performance of a bipolar trickle tower reactor.
Journal of Chemical Technology and Biotechnology, 79 (9), .
(doi:10.1002/jctb.1066).
Abstract
A bipolar trickle tower reactor (BTTR) (of 7.9 cm internal diameter and 75 cm length containing 57 layers, each layer having 30 carbon Raschig rings, each of 1.25 cm outside diameter) has been studied under a range of operational conditions. The batch recycle mode of operation has been used for the removal of Cu(II) ions (at an initial concentration of 50-200 ppm) from an acid sulfate solution (typically 3000 cm3) at 295 K. Non-ideal flow and Peclet number values have been considered to establish the degree of deviation from ideal reactor flow models. Operational variables included the potential difference per layer (1.0-3.0 V), volumetric flow rate (8.3-50 cm3 s-1) and the effect of H2SO4 concentration (which increased conductivity and lowered pH) in the electrolyte. The reactor has been shown to be best suited to the treatment of a moderately high reactant concentration (eg 100-200 ppm) and low electrolyte conductivity. The final concentration can be as low as a few parts per million but the performance of the reactor (as judged by the current efficiency and the rate of concentration decay) markedly decreased as the dissolved metal ion concentration fell.
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Published date: 2004
Keywords:
bipolar trickle tower reactor, cu(II) ion removal, current efficiency, environmental treatment, flow dispersion, mass transport and electrode area, normalised space velocity
Identifiers
Local EPrints ID: 23118
URI: http://eprints.soton.ac.uk/id/eprint/23118
ISSN: 0268-2575
PURE UUID: 2f381798-347f-41a7-b386-03a962e4b81b
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Date deposited: 24 Mar 2006
Last modified: 15 Mar 2024 06:44
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Contributors
Author:
Pedro Trinidad
Author:
Sally A. Sheppard
Author:
Stephen P. Gillard
Author:
Sheelagh A. Campbell
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