Details
| Original language | English |
|---|---|
| Pages (from-to) | SBH111-SBH1114 |
| Journal | Water resources research |
| Volume | 39 |
| Issue number | 12 |
| Publication status | Published - Dec 2003 |
Abstract
Because most methods for assessing the wettability of porous materials are restricted in their applicability, we developed two new methods for measuring contact angles and particle surface energy. The proposed methods (the Wilhelmy plate method (WPM) and the modified capillary rise method (MCRM)) were tested on 24 soils. For comparison, the water drop penetration time test (WDPTT) and the sessile drop method (SDM) were also applied. It was found that advancing contact angles, measured either with WPM or MCRM, agreed well in the range of 0° to 142°. Sessile drop contact angles were within the domain enclosed by the range of advancing and receding contact angles as determined with WPM. WDPTT, however, was only sensitive in the narrow range of 85° to 115°. We conclude that both WPM and MCRM are reliable methods for determining contact angles and particle surface energy over a wide range of porous material wettabilities.
Keywords
- Capillary rise, Contact angle, Soil wettability, Wilhelmy plate method
ASJC Scopus subject areas
- Environmental Science(all)
- Water Science and Technology
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In: Water resources research, Vol. 39, No. 12, 12.2003, p. SBH111-SBH1114.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Extended methodology for determining wetting properties of porous media
AU - Bachmann, J.
AU - Woche, S. K.
AU - Goebel, M. O.
AU - Kirkham, M. B.
AU - Horton, R.
N1 - Copyright: Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2003/12
Y1 - 2003/12
N2 - Because most methods for assessing the wettability of porous materials are restricted in their applicability, we developed two new methods for measuring contact angles and particle surface energy. The proposed methods (the Wilhelmy plate method (WPM) and the modified capillary rise method (MCRM)) were tested on 24 soils. For comparison, the water drop penetration time test (WDPTT) and the sessile drop method (SDM) were also applied. It was found that advancing contact angles, measured either with WPM or MCRM, agreed well in the range of 0° to 142°. Sessile drop contact angles were within the domain enclosed by the range of advancing and receding contact angles as determined with WPM. WDPTT, however, was only sensitive in the narrow range of 85° to 115°. We conclude that both WPM and MCRM are reliable methods for determining contact angles and particle surface energy over a wide range of porous material wettabilities.
AB - Because most methods for assessing the wettability of porous materials are restricted in their applicability, we developed two new methods for measuring contact angles and particle surface energy. The proposed methods (the Wilhelmy plate method (WPM) and the modified capillary rise method (MCRM)) were tested on 24 soils. For comparison, the water drop penetration time test (WDPTT) and the sessile drop method (SDM) were also applied. It was found that advancing contact angles, measured either with WPM or MCRM, agreed well in the range of 0° to 142°. Sessile drop contact angles were within the domain enclosed by the range of advancing and receding contact angles as determined with WPM. WDPTT, however, was only sensitive in the narrow range of 85° to 115°. We conclude that both WPM and MCRM are reliable methods for determining contact angles and particle surface energy over a wide range of porous material wettabilities.
KW - Capillary rise
KW - Contact angle
KW - Soil wettability
KW - Wilhelmy plate method
UR - http://www.scopus.com/inward/record.url?scp=1242299692&partnerID=8YFLogxK
U2 - 10.1029/2003WR002143
DO - 10.1029/2003WR002143
M3 - Article
AN - SCOPUS:1242299692
VL - 39
SP - SBH111-SBH1114
JO - Water resources research
JF - Water resources research
SN - 0043-1397
IS - 12
ER -