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Water and solute movement in air pollution control residues measured by time domain reflectometry.

van Praagh, Martijn LU ; Persson, Magnus LU and Persson, Kenneth M LU (2007) In Journal of Environmental Engineering 133(7). p.750-757
Abstract
The mobility of pollutants from air pollution control (APC) residues is strongly influenced by its contact with water. This study aims to verify the applicability of time-domain reflectometry (TDR) to infer water and solute movement in situ in an APC residue–compost mixture in a laboratory column. The calibrated dielectric permittivity–volumetric water content relationship (K−thetav) for the material shows a distinct plateau at midrange volumetric water contents, which are underestimated by Topp's K−thetav model throughout the studied range. The coating of probes enables a clear TDR signal collection and analysis up to electrical conductivity values of 280 mS cm−1. Heterogeneities in packing and channel flow in the column are revealed by... (More)
The mobility of pollutants from air pollution control (APC) residues is strongly influenced by its contact with water. This study aims to verify the applicability of time-domain reflectometry (TDR) to infer water and solute movement in situ in an APC residue–compost mixture in a laboratory column. The calibrated dielectric permittivity–volumetric water content relationship (K−thetav) for the material shows a distinct plateau at midrange volumetric water contents, which are underestimated by Topp's K−thetav model throughout the studied range. The coating of probes enables a clear TDR signal collection and analysis up to electrical conductivity values of 280 mS cm−1. Heterogeneities in packing and channel flow in the column are revealed by TDR measurements. Water contents inferred by TDR signal analysis require careful interpretation when used in materials such as APC residues, due to the high amount of water bound in the hydration shells of ions released into the pore water. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Air pollution, Time factors, Waste management, Leaching, In situ tests, Water flow, Water pollution
in
Journal of Environmental Engineering
volume
133
issue
7
pages
750 - 757
publisher
ACSE
external identifiers
  • wos:000247384900010
  • scopus:34547634727
ISSN
0733-9372
DOI
10.1061/(ASCE)0733-9372(2007)133:7(750)
language
English
LU publication?
yes
id
301c3e37-7287-406f-8a34-fa7e9510f865 (old id 742386)
date added to LUP
2007-12-12 11:29:57
date last changed
2017-01-01 05:04:25
@article{301c3e37-7287-406f-8a34-fa7e9510f865,
  abstract     = {The mobility of pollutants from air pollution control (APC) residues is strongly influenced by its contact with water. This study aims to verify the applicability of time-domain reflectometry (TDR) to infer water and solute movement in situ in an APC residue–compost mixture in a laboratory column. The calibrated dielectric permittivity–volumetric water content relationship (K−thetav) for the material shows a distinct plateau at midrange volumetric water contents, which are underestimated by Topp's K−thetav model throughout the studied range. The coating of probes enables a clear TDR signal collection and analysis up to electrical conductivity values of 280 mS cm−1. Heterogeneities in packing and channel flow in the column are revealed by TDR measurements. Water contents inferred by TDR signal analysis require careful interpretation when used in materials such as APC residues, due to the high amount of water bound in the hydration shells of ions released into the pore water.},
  author       = {van Praagh, Martijn and Persson, Magnus and Persson, Kenneth M},
  issn         = {0733-9372},
  keyword      = {Air pollution,Time factors,Waste management,Leaching,In situ tests,Water flow,Water pollution},
  language     = {eng},
  number       = {7},
  pages        = {750--757},
  publisher    = {ACSE},
  series       = {Journal of Environmental Engineering},
  title        = {Water and solute movement in air pollution control residues measured by time domain reflectometry.},
  url          = {http://dx.doi.org/10.1061/(ASCE)0733-9372(2007)133:7(750)},
  volume       = {133},
  year         = {2007},
}