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Scaling-up the acid-enhanced electrokinetic remediation of a real contaminated soil

Villen-Guzman, Maria; Paz Garcia, Juan Manuel LU ; Rodriguez-Maroto, Jose M.; Garcia-Herruzo, Francisco; Amaya-Santos, Gema; Gomez-Lahoz, Cesar and Vereda-Alonso, Carlos (2015) In Electrochimica Acta 181. p.139-145
Abstract
Although there is a lot of experimental work published about the use of Electrokinetic Remediation for the removal of toxic metals from soils, very few have reported results for different scales. Scaling- up is a difficult task, since the behavior of each metal is different and is also site-specific. In this paper we present a convenient parameter for the comparison of the energy requirements at different scales. This parameter consists on the definition of a specific-energy for each metal, based on the amount mobilized and the maximum removal expected as determined from the BCR fractionation analysis. The tests, which were carried out with soil columns holding soil samples of 16 g and with soil samples of 2000 g, are giving similar values... (More)
Although there is a lot of experimental work published about the use of Electrokinetic Remediation for the removal of toxic metals from soils, very few have reported results for different scales. Scaling- up is a difficult task, since the behavior of each metal is different and is also site-specific. In this paper we present a convenient parameter for the comparison of the energy requirements at different scales. This parameter consists on the definition of a specific-energy for each metal, based on the amount mobilized and the maximum removal expected as determined from the BCR fractionation analysis. The tests, which were carried out with soil columns holding soil samples of 16 g and with soil samples of 2000 g, are giving similar values of this parameter. Our results indicate that this specific-energy depends on the target metal to be recovered, but for each metal is quite similar for the experimental conditions of the two scales essayed. These conditions included that the initial electrical resistivity times the column length were equal for the two scales. A simple mathematical model predicts these results, and that for equal resistivity the specific energy requirement will be proportional to the distance between electrodes. (C) 2015 Elsevier Ltd. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Lead contamination, energy consumption, heavy metals, BCR fractionation, Sequential Extraction Procedure
in
Electrochimica Acta
volume
181
pages
139 - 145
publisher
Pergamon
external identifiers
  • wos:000363474500018
  • scopus:84945478542
ISSN
0013-4686
DOI
10.1016/j.electacta.2015.02.067
language
English
LU publication?
yes
id
f0cfed3a-d4b2-4b55-ad9b-ea6fbcd401d1 (old id 8195237)
date added to LUP
2015-11-26 10:28:09
date last changed
2017-09-17 03:44:10
@article{f0cfed3a-d4b2-4b55-ad9b-ea6fbcd401d1,
  abstract     = {Although there is a lot of experimental work published about the use of Electrokinetic Remediation for the removal of toxic metals from soils, very few have reported results for different scales. Scaling- up is a difficult task, since the behavior of each metal is different and is also site-specific. In this paper we present a convenient parameter for the comparison of the energy requirements at different scales. This parameter consists on the definition of a specific-energy for each metal, based on the amount mobilized and the maximum removal expected as determined from the BCR fractionation analysis. The tests, which were carried out with soil columns holding soil samples of 16 g and with soil samples of 2000 g, are giving similar values of this parameter. Our results indicate that this specific-energy depends on the target metal to be recovered, but for each metal is quite similar for the experimental conditions of the two scales essayed. These conditions included that the initial electrical resistivity times the column length were equal for the two scales. A simple mathematical model predicts these results, and that for equal resistivity the specific energy requirement will be proportional to the distance between electrodes. (C) 2015 Elsevier Ltd. All rights reserved.},
  author       = {Villen-Guzman, Maria and Paz Garcia, Juan Manuel and Rodriguez-Maroto, Jose M. and Garcia-Herruzo, Francisco and Amaya-Santos, Gema and Gomez-Lahoz, Cesar and Vereda-Alonso, Carlos},
  issn         = {0013-4686},
  keyword      = {Lead contamination,energy consumption,heavy metals,BCR fractionation,Sequential Extraction Procedure},
  language     = {eng},
  pages        = {139--145},
  publisher    = {Pergamon},
  series       = {Electrochimica Acta},
  title        = {Scaling-up the acid-enhanced electrokinetic remediation of a real contaminated soil},
  url          = {http://dx.doi.org/10.1016/j.electacta.2015.02.067},
  volume       = {181},
  year         = {2015},
}