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  • A comparative investigation of the effectiveness of polyacrylamide (PAM) for erosion control in urban areas.

    Author(s) : Masters, A.Flahive, K. A.Mostaghimi, S.Vaughan, D. H.Mendez, A.Peterie, M.Radke, S.Davisson, A.Hunter, M.Kaplan, D.

    Author Affiliation : Biological Systems Engineering Department, Virginia Polytechnic Institute and State University, Blacksburg, USA.

    Bulletin article; Conference paper : 2000 ASAE Annual International Meeting, Milwaukee, Wisconsin, USA, 9-12 July 2000 2000 pp.1-22 ref.18

    Conference Title : 2000 ASAE Annual International Meeting, Milwaukee, Wisconsin, USA, 9-12 July 2000.

    Abstract : Erosion from construction sites significantly affects water quality in receiving streams. A rainfall simulator was used to evaluate the effectiveness of different methods for controlling erosion from construction sites. Erosion controlerosion controlSubject Category: Miscellaneous
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    methods investigated included dry and liquid applications of polyacrylamidepolyacrylamideSubject Category: Commodities and Products
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    polyacrylamideSubject Category: Chemicals and Chemical Groups
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    (PAM), hydroseed, and straw mulch. Fertilizer was also applied to each plot to examine the effectiveness of the methods in reducing nutrient losses in runoffrunoffSubject Category: Miscellaneous
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    . Runoff samples were analysed for total suspended solids, nitrate, total Kjeldahl nitrogen, ammonium, total phosphorus, and orthophosphate. A sequence of three simulated rainfall events were applied to 21 (three replications of each treatment), experimental field plots. The first sequence of rainfall events was applied shortly after application of treatments to evaluate short-term impact of treatment methods. The same sequence of rainfall events was applied a month later to evaluate long-term effectiveness of the treatments. Among all treatments investigated, straw mulch was the most effective treatment for controlling sediment and nutrients losses during both the short-term and long-term simulations. The low liquid PAM (half the recommended PAM) treatment resulted in the highest reduction in runoff, sediment-bound nitrogen, and total nitrogen concentrations and loadings. Among the PAM treatments investigated, dry PAM produced the highest reduction of sediment and sediment-bound P concentrations and yields and total phosphorous concentrations. The recommended PAM resulted in the highest reduction of total P loadings. Straw mulch and low PAM treatments were consistent in reducing sediment losses and runoff, respectively, for both short-term and long-term simulations. Dry PAM's effectiveness in reducing sediment and sediment-bound phosphorous declined for the long-term simulations. Similarly, the low PAM's effectiveness for reducing total nitrogen losses decreased substantially during the one month period between the two sets of the simulations. The study results indicate that high application rate (twice the recommended rate) of PAM could actually increase runoff and sediment losses. The low rate of liquid PAM and the dry PAM were both effective in reducing sediment and nutrient losses in runoff, however application of liquid form of PAM to construction sites is more practical and perhaps more economical than applying the PAM in the dry form.

    Record Number : 20003020085

    Publisher : American Society of Agricultural Engineers

    Location of publication : St Joseph

    Country of publication : USA

    Language of text : English

    Indexing terms for this abstract:

    Descriptor(s) : conferencesconferencesSubject Category: Miscellaneous
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    , erosion controlerosion controlSubject Category: Miscellaneous
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    , mulchesmulchesSubject Category: Miscellaneous
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    , polyacrylamidepolyacrylamideSubject Category: Chemicals and Chemical Groups
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    , runoffrunoffSubject Category: Miscellaneous
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    Identifier(s) : mulching materials