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    Impacts of Size Distribution and Storm Intensity on the Behavior of Suspended Particles and Their Associated Metals in a Bioswale Stormwater Control Measure

    Source: Journal of Sustainable Water in the Built Environment:;2022:;Volume ( 008 ):;issue: 003::page 04022006
    Author:
    Ali Behbahani
    ,
    Erica R. McKenzie
    ,
    Robert J. Ryan
    DOI: 10.1061/JSWBAY.0000984
    Publisher: ASCE
    Abstract: Suspended solids in runoff were evaluated along the gradient of a bioswale stormwater control measure (SCM), considering storms of varying intensities. Total and size-fractionated suspended solids and their associated metals were used to investigate resuspension or deposition patterns and metal adsorption. Total suspended solids and their associated metal concentrations increased along the gradient of the SCM when average storm intensity was higher than 4.5  mm/h, suggesting resuspension was occurring. However, solids and their associated metals for fine size classes (D<10  μm) revealed that resuspension or ineffective deposition occurred along the SCM regardless of storm intensity, but the degree of resuspension was not related to average storm intensity. Adsorption coefficients derived from analysis of fine sizes were higher compared to coarser sizes by orders of magnitude (10 to 1,000 times), indicating a higher affinity for fine solids. Freundlich isotherm had the best goodness of fit in modeling metal adsorption onto fine solids. The observed resuspension and fine particle–associated metal transport highlight the importance of proper SCM design (e.g., employing forebays and weirs) and maintenance (e.g., vegetative cover and mulching) to address their corresponding challenges.
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      Impacts of Size Distribution and Storm Intensity on the Behavior of Suspended Particles and Their Associated Metals in a Bioswale Stormwater Control Measure

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4282832
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    contributor authorAli Behbahani
    contributor authorErica R. McKenzie
    contributor authorRobert J. Ryan
    date accessioned2022-05-07T20:44:34Z
    date available2022-05-07T20:44:34Z
    date issued2022-03-24
    identifier otherJSWBAY.0000984.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4282832
    description abstractSuspended solids in runoff were evaluated along the gradient of a bioswale stormwater control measure (SCM), considering storms of varying intensities. Total and size-fractionated suspended solids and their associated metals were used to investigate resuspension or deposition patterns and metal adsorption. Total suspended solids and their associated metal concentrations increased along the gradient of the SCM when average storm intensity was higher than 4.5  mm/h, suggesting resuspension was occurring. However, solids and their associated metals for fine size classes (D<10  μm) revealed that resuspension or ineffective deposition occurred along the SCM regardless of storm intensity, but the degree of resuspension was not related to average storm intensity. Adsorption coefficients derived from analysis of fine sizes were higher compared to coarser sizes by orders of magnitude (10 to 1,000 times), indicating a higher affinity for fine solids. Freundlich isotherm had the best goodness of fit in modeling metal adsorption onto fine solids. The observed resuspension and fine particle–associated metal transport highlight the importance of proper SCM design (e.g., employing forebays and weirs) and maintenance (e.g., vegetative cover and mulching) to address their corresponding challenges.
    publisherASCE
    titleImpacts of Size Distribution and Storm Intensity on the Behavior of Suspended Particles and Their Associated Metals in a Bioswale Stormwater Control Measure
    typeJournal Paper
    journal volume8
    journal issue3
    journal titleJournal of Sustainable Water in the Built Environment
    identifier doi10.1061/JSWBAY.0000984
    journal fristpage04022006
    journal lastpage04022006-14
    page14
    treeJournal of Sustainable Water in the Built Environment:;2022:;Volume ( 008 ):;issue: 003
    contenttypeFulltext
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