The effect of polyacrylamide additions on the infiltration and erosion of disturbed lands

Vacher, Cameron A. and Loch, Rob and Raine, Steven R. (2003) The effect of polyacrylamide additions on the infiltration and erosion of disturbed lands. Soil Research, 41 (8). pp. 1509-1520. ISSN 0004-9573

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Abstract

The removal of vegetation and disturbance of the soil surface due to a range of human activities results in the potential for soil structure degradation and sediment movement. Polyacrylamides have been used to improve infiltration and reduce erosion on agricultural lands. However, they are not commonly used as part of management and rehabilitation programs on land disturbed by construction or mining activities in Australia. A study was undertaken to investigate the potential for polyacrylamides to improve infiltration and reduce erosion of soil material from 3 Australian mine sites. The polyacrylamides were found to significantly (P < 0.05) increase total infiltration under rainfall, reduce surface hardness, and reduce sediment entrainment and erosion by both rainfall and overland flows. The effectiveness of the polyacrylamide was found to be related to clay content of the soil as well as the molecular weight and charge density of the polyacrylamide. The implications of these results for the management and rehabilitation of disturbed lands are discussed.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to published version due to publisher copyright policy. Note variation in title of journal (also known as Australian Journal of Soil Research).
Depositing User: Assoc Prof Steven Raine
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited: 11 Oct 2007 01:21
Last Modified: 02 Jul 2013 22:50
Uncontrolled Keywords: sediment, rehabilitation, stabilisation
Fields of Research (FOR2008): 05 Environmental Sciences > 0503 Soil Sciences > 050305 Soil Physics
07 Agricultural and Veterinary Sciences > 0799 Other Agricultural and Veterinary Sciences > 079901 Agricultural Hydrology (Drainage, Flooding, Irrigation, Quality, etc.)
Identification Number or DOI: doi: 10.1071/SR02114
URI: http://eprints.usq.edu.au/id/eprint/3158

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