Distribution and dispersal of metals in contaminated fibrous sediments of industrial origin

Apler, Anna; Snowball, Ian; Frogner-Kockum, Paul; Josefsson, Sarah

doi:10.1016/j.chemosphere.2018.10.010

Cited by 30 publications

(26 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The fiberbank is located at 15 m water depth and is situated close to a sulfate pulp mill that was established in 1914 (still in production). The factory discarded its cellulose-rich waste water into the river until 1969 when a sedimentation basin was built as an extra clean up step for the waste water (Apler et al 2014(Apler et al , 2019. The fiberbank in Väja has been reported to be anoxic whereas the fiber-rich sediment, covering 800,000 m 2 , is hypoxic (Apler et al 2014(Apler et al , 2019.…”

Section: Fiberbank Areasmentioning

confidence: 99%

“…Fiberbank sediments have been shown to be highly contaminated with heavy metals and POPs, such as polychlorinated biphenyls (PCBs), hexachlorobenzene (HCB), dichlorodiphenyltrichloroethane (DDT), and its transformation products, e.g., dichlorodiphenyldichloroethene (DDE) and dichlorodiphenyldichloroethane (DDD) (Apler et al 2014(Apler et al , 2019. PCBs were widely deployed in various industrial applications since the late 1920s, including as dielectric fluids in capacitors and transformers, as hydraulic fluids and as lubricants (Erickson and Kaley 2011).…”

Section: Introductionmentioning

confidence: 99%

“…They are a unique type of sediment due to their high content of organic matter, considerably larger than for naturally formed sediments. We have recently investigated the role they play in the fate of metals in the aquatic environment (Apler et al 2019). However, until now, no other studies have addressed their characteristics as sorbents and their (potential) role as secondary sources for pollution of bioaccumulative and toxic organic compounds to the surrounding aquatic ecosystem.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Persistent organic pollutants in wood fiber–contaminated sediments from the Baltic Sea

et al. 2020

Self Cite

View full text Add to dashboard Cite

Purpose Many coastal areas in the Baltic Sea are contaminated with wood fiber and pollutants from pulp and paper industries. These anthropogenic, organic-rich, sediments (fiberbanks) have not been characterized and knowledge about their role as secondary sources for dispersal of persistent organic pollutants (POPs) is limited. Hence, the aim of this study was to elucidate the fate of POPs and the relationships between sorption (K D and K TOC), sediment type, and compound hydrophobicity (K OW) in fiber-contaminated sediments. Materials and methods Paired sediment and pore water samples (n = 24 sites) from three fiber-contaminated areas, located in the Ångermanälven river estuary in northern Sweden, were analyzed for POPs (viz. PCBs, DDT, and HCB) in sediment types representing different fiber content (i.e., fiberbanks, fiber-rich sediments, and natural less fiber impacted sediments). The freely dissolved concentration in sediment pore water was determined by sediment-polyoxymethylene (POM) partitioning. Instrumental analysis was performed using gas chromatography coupled to a triple quadrupole mass spectrometer (GC-MS/MS). Results and discussion Higher levels of total organic carbon (TOC) were found in the fiberbank sediment (range 8.6-37%) than in fiber-rich sediment (range 2.0-6.5%) and more natural sediment (range 2.0-2.9%). The sediment concentrations of POPs (dry weight basis) were also found to be significantly (p < 0.05) elevated in fiberbanks compared to the other sediment types. The fraction of DDD (48-66% of Σ 6 DDX) was larger in fiberbanks than in the other sediment types, likely due to anoxic conditions favoring reductive dechlorination of DDT. When sediment levels were normalized to TOC, HCB displayed similar levels across sediment type, suggesting a more diffuse source pattern than for PCB and DDT. Although significantly higher sorption (K D) of POPs was observed in fiberbanks, pore water levels were still elevated due to high bulk concentrations. Conclusions This study shows that fiberbanks are coastal hot spots for POPs in the Baltic Sea and that the levels are of ecotoxicological concern. Although the POPs are more strongly sorbed (K D) to this type of organic rich sediment, the high pore water concentrations in fiberbanks compared to the other sediment types investigated show that the risk of contaminant dispersal via pore water is elevated for fiberbanks.

show abstract

Section: Fiberbank Areasmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Persistent organic pollutants in wood fiber–contaminated sediments from the Baltic Sea

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…Contracted by Regional County Administrative Boards, SGU surveyed selected potentially contaminated seafloor areas in the vicinity of known (past and present) pulp and paper factories (including sawmills). The deposited solid waste was identified to consist of relatively thick accumulations of cellulose-rich sediment, so-called "fiberbanks", which show high amounts of persistent organic pollutants (POPs) such as PCBs, HCB and DDT, and metals such as Hg, Pb, Cd, Cr, Cu, Ni, Zn and As (Apler, Nyberg et al 2014, Apler 2018, Apler, Snowball et al 2019. The concentration of each pollutant varies widely from one factory to another, due to the various industrial processes used for different types of product (pulp, paper, board).…”

Section: Swedenmentioning

confidence: 99%

“…Concentrations in various sites have been found to range from Very high to Low according to the Swedish Environmental Criteria (Naturvårdsverket 1999, Josefsson 2017. The amounts of PCB in fiberbanks can reach a critical level corresponding to potential chronic effects on aquatic or sediment dwelling organisms (Apler 2018, Apler, Snowball et al 2019. The high biological oxygen demand characteristic of the organic-rich fiberbanks causes anoxia within the sediment mass, which results in the production of methane, carbon dioxide and hydrogen sulphide.…”

Section: Swedenmentioning

confidence: 99%

Contaminated Sediments

Olsen¹,

Petersen²,

Lehoux³

et al. 2019

TemaNord

Self Cite

View full text Add to dashboard Cite

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

View full text Add to dashboard Cite

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.

show abstract

Distribution and dispersal of metals in contaminated fibrous sediments of industrial origin

Cited by 30 publications

References 21 publications

Persistent organic pollutants in wood fiber–contaminated sediments from the Baltic Sea

Persistent organic pollutants in wood fiber–contaminated sediments from the Baltic Sea

Contaminated Sediments

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

Contact Info

Product

Resources

About