A Kinetic Model of Short-Term Dissolved Contaminant Release during Dredge-Generated Bed Sediment Resuspension

Birdwell, Justin E.; Thibodeaux, Louis J.

doi:10.1089/ees.2007.0017

Cited by 9 publications

(7 citation statements)

References 16 publications

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“…Another potential disadvantage of dredging is the risk of contaminant losses through resuspension and through volatilization, which occurs if the sediment is not in equilibrium with ambient water or air (Bridges et al ; Van Noort and Koelmans ). Resuspension of sediment from dredging may result in the release of both dissolved and particle‐associated contaminants to the water column where they may be more available for uptake by biota (Birdwell and Thibodeaux ). Resuspended particulate material may be redeposited at the dredging site or transported downstream.…”

Section: Evaluation Of Alternatives For the Remediation Of Contaminatmentioning

confidence: 99%

Positioning activated carbon amendment technologies in a novel framework for sediment management

Kupryianchyk¹,

Rakowska²,

Reible³

et al. 2015

Integr Envir Assess & Manag

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Contaminated sediments can pose serious threats to human health and the environment by acting as a source of toxic chemicals. The amendment of contaminated sediments with strong sorbents like activated C (AC) is a rapidly developing strategy to manage contaminated sediments. To date, a great deal of attention has been paid to the technical and ecological features and implications of sediment remediation with AC, although science in this field still is rapidly evolving. This article aims to provide an update on the recent literature on these features, and provides a comparison of sediment remediation with AC to other sediment management options, emphasizing their full-scale application. First, a qualitative overview of advantages of current alternatives to remediate contaminated sediments is presented. Subsequently, AC treatment technology is critically reviewed, including current understanding of the effectiveness and ecological safety for the use of AC in natural systems. Finally, this information is used to provide a novel framework for supporting decisions concerning sediment remediation and beneficial reuse.

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Section: Evaluation Of Alternatives For the Remediation Of Contaminatmentioning

confidence: 99%

Positioning activated carbon amendment technologies in a novel framework for sediment management

Kupryianchyk¹,

Rakowska²,

Reible³

et al. 2015

Integr Envir Assess & Manag

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show abstract

“…In natural aquatic environments, the decay of settled macrophytes might cause the accumulation of excess cellulose in sediments [22], which was problematic because it could leads to the re-suspension of sediments during warm climates. Therefore, cellulose was directly added to the sediment to simulate the phenomenon of increased amount of cellulose in sediments.…”

Section: Discussionmentioning

confidence: 99%

Construction and operation of freshwater sediment microbial fuel cell for electricity generation

Song

Yan

Zhao

et al. 2011

Bioprocess Biosyst Eng

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In this work, sediment microbial fuel cell (SMFC) with granule activated carbon (GAC) cathode and stainless steel anode was constructed in laboratory tests and various factors on SMFC power output were investigated. The maximum power densities for the SMFC with GAC cathode was 3.5 mW m(-2), it was much higher than SMFC with round stainless steel cathode. Addition of cellulose reduced the output power from SMFC at the beginning of experiments, while the output power was found to increase after adding cellulose to sediments on day 90 of operation. On 160 day, maximum power density from the SMFC with adding 0.2% cellulose reached to 11.2 mW m(-2). In addition, the surface morphology of stainless steel anode on day 90 was analyzed by scanning electron microscope. It was found that the protection layer of the stainless steel as electrode in SMFCs was destroyed to some extent.

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“…The suitability of thin‐layer capping depends on the capping materials, ongoing emission of contaminants and deposition of contaminated sediment, site conditions such as water currents and bathymetry, and erosional forces such as sediment resuspension (Abel & Akkanen, 2018 ; Cornelissen et al, 2012 ; Graham et al, 2013 ; Lampert et al, 2011 ). Resuspension may lead to dispersal of contaminated particles and facilitates contaminant desorption into the overlying water (Birdwell & Thibodeaux, 2007 ; Kalnejais et al, 2010 ; Latimer et al, 1999 ). Because activated carbon particles have near‐neutral buoyancy, they may be transported from a site of application by storms, currents, and propeller wash, leading to erosion of the thin‐layer cap over time.…”

Section: Introductionmentioning

confidence: 99%

Sediment Remediation Using Activated Carbon: Effects of Sorbent Particle Size and Resuspension on Sequestration of Metals and Organic Contaminants

Rämö

Bonaglia

Nybom

et al. 2022

Environmental Toxicology and Chemistry

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Thin‐layer capping using activated carbon has been described as a cost‐effective in situ sediment remediation method for organic contaminants. We compared the capping efficiency of powdered activated carbon (PAC) against granular activated carbon (GAC) using contaminated sediment from Oskarshamn harbor, Sweden. The effects of resuspension on contaminant retention and cap integrity were also studied. Intact sediment cores were collected from the outer harbor and brought to the laboratory. Three thin‐layer caps, consisting of PAC or GAC mixed with clay or clay only, were added to the sediment surface. Resuspension was created using a motor‐driven paddle to simulate propeller wash from ship traffic. Passive samplers were placed in the sediment and in the water column to measure the sediment‐to‐water release of polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and metals. Our results show that a thin‐layer cap with PAC reduced sediment‐to‐water fluxes of PCBs by 57% under static conditions and 91% under resuspension. Thin‐layer capping with GAC was less effective than PAC but reduced fluxes of high–molecular weight PAHs. Thin‐layer capping with activated carbon was less effective at retaining metals, except for Cd, the release of which was significantly reduced by PAC. Resuspension generally decreased water concentrations of dissolved cationic metals, perhaps because of sorption to suspended sediment particles. Sediment resuspension in treatments without capping increased fluxes of PCBs with log octanol–water partitioning coefficient (KOW) > 7 and PAHs with log KOW of 5–6, but resuspension reduced PCB and PAH fluxes through the PAC thin‐layer cap. Overall, PAC performed better than GAC, but adverse effects on the benthic community and transport of PAC to nontarget areas are drawbacks that favor the use of GAC. Environ Toxicol Chem 2022;41:1096–1110. © 2022 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.

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A Kinetic Model of Short-Term Dissolved Contaminant Release during Dredge-Generated Bed Sediment Resuspension

Cited by 9 publications

References 16 publications

Positioning activated carbon amendment technologies in a novel framework for sediment management

Positioning activated carbon amendment technologies in a novel framework for sediment management

Construction and operation of freshwater sediment microbial fuel cell for electricity generation

Sediment Remediation Using Activated Carbon: Effects of Sorbent Particle Size and Resuspension on Sequestration of Metals and Organic Contaminants

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