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Experimental and numerical study on nitrate transport process through volcanic ash soil

Nakagawa, K. LU orcid ; Momii, K. and Berndtsson, R. LU orcid (2008) Groundwater Quality 2007 Conference - Securing Groundwater Quality in Urban and Industrial Environments, GQ'07 p.71-78
Abstract

Column experiments using two Japanese volcanic ash soils (Akahoya and Kuroboku soils) were carried out to improve understanding of solute transport characteristics through volcanic ash soil. As the contaminant source, a mixed solution of KNO3 and K2SO4 was applied from the top of the column. Temporal changes of cations and anions in the effluent were measured at prescribed time intervals. Breakthrough curves (BTC) of anions for Akahoya soil show apparent retardation compared to BTC of anions for Kuroboku soil. Akahoya soil has a higher adsorption capacity of anions than Kuroboku soil. BTC of cations for Akahoya soil show apparent retardation compared to BTC of Kuroboku soil cations. Cations discharged... (More)

Column experiments using two Japanese volcanic ash soils (Akahoya and Kuroboku soils) were carried out to improve understanding of solute transport characteristics through volcanic ash soil. As the contaminant source, a mixed solution of KNO3 and K2SO4 was applied from the top of the column. Temporal changes of cations and anions in the effluent were measured at prescribed time intervals. Breakthrough curves (BTC) of anions for Akahoya soil show apparent retardation compared to BTC of anions for Kuroboku soil. Akahoya soil has a higher adsorption capacity of anions than Kuroboku soil. BTC of cations for Akahoya soil show apparent retardation compared to BTC of Kuroboku soil cations. Cations discharged together with anions are relatively strongly adsorbed in Akahoya soil. Cation exchange reactions were observed in both volcanic ash soils. Finally, transport processes of the above column experiment are examined by reactive transport simulations. The numerical results show that solute transport in volcanic ash soil can be reliably simulated with conventional cation exchange and anion retardation.

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Please use this url to cite or link to this publication:
author
; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Cation exchange, Reactive transport modelling, Soil column experiment
host publication
Groundwater Quality 2007 Conference : Securing Groundwater Quality in Urban and Industrial Environments, GQ'07 - Securing Groundwater Quality in Urban and Industrial Environments, GQ'07
edition
324
pages
8 pages
publisher
IAHS
conference name
Groundwater Quality 2007 Conference - Securing Groundwater Quality in Urban and Industrial Environments, GQ'07
conference location
Fremantle, WA, Australia
conference dates
2008-12-02 - 2008-12-07
external identifiers
  • scopus:62949178743
ISBN
9781901502794
language
English
LU publication?
yes
id
1fe6d902-a27e-4fc4-9dcd-5918de76ac66
date added to LUP
2019-01-02 01:34:14
date last changed
2022-10-16 02:10:52
@inproceedings{1fe6d902-a27e-4fc4-9dcd-5918de76ac66,
  abstract     = {{<p>Column experiments using two Japanese volcanic ash soils (Akahoya and Kuroboku soils) were carried out to improve understanding of solute transport characteristics through volcanic ash soil. As the contaminant source, a mixed solution of KNO<sub>3</sub> and K<sub>2</sub>SO<sub>4</sub> was applied from the top of the column. Temporal changes of cations and anions in the effluent were measured at prescribed time intervals. Breakthrough curves (BTC) of anions for Akahoya soil show apparent retardation compared to BTC of anions for Kuroboku soil. Akahoya soil has a higher adsorption capacity of anions than Kuroboku soil. BTC of cations for Akahoya soil show apparent retardation compared to BTC of Kuroboku soil cations. Cations discharged together with anions are relatively strongly adsorbed in Akahoya soil. Cation exchange reactions were observed in both volcanic ash soils. Finally, transport processes of the above column experiment are examined by reactive transport simulations. The numerical results show that solute transport in volcanic ash soil can be reliably simulated with conventional cation exchange and anion retardation.</p>}},
  author       = {{Nakagawa, K. and Momii, K. and Berndtsson, R.}},
  booktitle    = {{Groundwater Quality 2007 Conference : Securing Groundwater Quality in Urban and Industrial Environments, GQ'07}},
  isbn         = {{9781901502794}},
  keywords     = {{Cation exchange; Reactive transport modelling; Soil column experiment}},
  language     = {{eng}},
  month        = {{12}},
  pages        = {{71--78}},
  publisher    = {{IAHS}},
  title        = {{Experimental and numerical study on nitrate transport process through volcanic ash soil}},
  year         = {{2008}},
}