Advanced

The importance of including the pH dependence of sulfate adsorption in a dynamic soil chemistry model

Fransson, Liisa LU and Alveteg, Mattias LU (2004) In Water, Air and Soil Pollution 154(1-4). p.349-356
Abstract
Sulfate adsorption is an important process when modeling the dynamics of recovery from acidification. In the dynamic soil chemistry model SAFE sulfate adsorption is modeled by a pH and sulfate concentration dependent isotherm. This isotherm has been parameterized by fitting it to data from batch experiments on soil samples using multiple linear regression. The soil samples were from the B-horizon from three sites, two from the Lake Gardsjon area in south-west Sweden and one from southern Poland. The pH dependency of sulfate adsorption is important. The batch experiments show that the adsorbed amount, at a specific sulfate concentration, increases considerably with decreasing pH. This implies that the adsorbed pool of anthropogenic sulfate... (More)
Sulfate adsorption is an important process when modeling the dynamics of recovery from acidification. In the dynamic soil chemistry model SAFE sulfate adsorption is modeled by a pH and sulfate concentration dependent isotherm. This isotherm has been parameterized by fitting it to data from batch experiments on soil samples using multiple linear regression. The soil samples were from the B-horizon from three sites, two from the Lake Gardsjon area in south-west Sweden and one from southern Poland. The pH dependency of sulfate adsorption is important. The batch experiments show that the adsorbed amount, at a specific sulfate concentration, increases considerably with decreasing pH. This implies that the adsorbed pool of anthropogenic sulfate in soils may remain fairly high during the recovery phase. Although a decrease of sulfate concentration is commonly seen, the modeled pH increase is often slow, and thus delays in the modeled desorption of anthropogenic sulfate can be expected. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Water, Air and Soil Pollution
volume
154
issue
1-4
pages
349 - 356
publisher
Springer
external identifiers
  • wos:000220674700024
  • scopus:4944262904
ISSN
1573-2932
DOI
10.1023/B:WATE.0000022976.01342.2c
language
English
LU publication?
yes
id
122a20fe-80e7-464a-8048-1df598cdf9c8 (old id 138881)
date added to LUP
2007-06-25 12:51:36
date last changed
2017-01-01 05:10:48
@article{122a20fe-80e7-464a-8048-1df598cdf9c8,
  abstract     = {Sulfate adsorption is an important process when modeling the dynamics of recovery from acidification. In the dynamic soil chemistry model SAFE sulfate adsorption is modeled by a pH and sulfate concentration dependent isotherm. This isotherm has been parameterized by fitting it to data from batch experiments on soil samples using multiple linear regression. The soil samples were from the B-horizon from three sites, two from the Lake Gardsjon area in south-west Sweden and one from southern Poland. The pH dependency of sulfate adsorption is important. The batch experiments show that the adsorbed amount, at a specific sulfate concentration, increases considerably with decreasing pH. This implies that the adsorbed pool of anthropogenic sulfate in soils may remain fairly high during the recovery phase. Although a decrease of sulfate concentration is commonly seen, the modeled pH increase is often slow, and thus delays in the modeled desorption of anthropogenic sulfate can be expected.},
  author       = {Fransson, Liisa and Alveteg, Mattias},
  issn         = {1573-2932},
  language     = {eng},
  number       = {1-4},
  pages        = {349--356},
  publisher    = {Springer},
  series       = {Water, Air and Soil Pollution},
  title        = {The importance of including the pH dependence of sulfate adsorption in a dynamic soil chemistry model},
  url          = {http://dx.doi.org/10.1023/B:WATE.0000022976.01342.2c},
  volume       = {154},
  year         = {2004},
}