Effects of Superabsorbent Polymers on the Hydraulic Parameters and Water Retention Properties of Soil
Joint Authors
Liao, Renkuan
Ren, Shumei
Yang, Peiling
Wu, Wenyong
Source
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-07-03
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Superabsorbent polymers (SAPs) are widely applied in dryland agriculture.
However, their functional property of repeated absorption and release of soil water exerts periodic effects on the hydraulic parameters and water-retention properties of soil, and as this property gradually diminishes with time, its effects tend to be unstable.
During the 120-day continuous soil cultivation experiment described in this paper, horizontal soil column infiltration and high-speed centrifugation tests were conducted on SAP-treated soil to measure unsaturated diffusivity D and soil water characteristic curves.
The experimental results suggest that the SAP increased the water retaining capacity of soil sections where the suction pressure was between 0 and 3,000 cm.
The SAP significantly obstructed water diffusion in the soil in the early days of the experiment, but the effect gradually decreased in the later period.
The average decrease in water diffusivity in the treatment groups fell from 76.6% at 0 days to 1.2% at 120 days.
This research also provided parameters of time-varying functions that describe the unsaturated diffusivity D and unsaturated hydraulic conductivity K of soils under the effects of SAPs; in future research, these functions can be used to construct water movement models applicable to SAP-treated soil.
American Psychological Association (APA)
Liao, Renkuan& Wu, Wenyong& Ren, Shumei& Yang, Peiling. 2016. Effects of Superabsorbent Polymers on the Hydraulic Parameters and Water Retention Properties of Soil. Journal of Nanomaterials،Vol. 2016, no. 2016, pp.1-11.
https://search.emarefa.net/detail/BIM-1109237
Modern Language Association (MLA)
Liao, Renkuan…[et al.]. Effects of Superabsorbent Polymers on the Hydraulic Parameters and Water Retention Properties of Soil. Journal of Nanomaterials No. 2016 (2016), pp.1-11.
https://search.emarefa.net/detail/BIM-1109237
American Medical Association (AMA)
Liao, Renkuan& Wu, Wenyong& Ren, Shumei& Yang, Peiling. Effects of Superabsorbent Polymers on the Hydraulic Parameters and Water Retention Properties of Soil. Journal of Nanomaterials. 2016. Vol. 2016, no. 2016, pp.1-11.
https://search.emarefa.net/detail/BIM-1109237
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1109237