Studies of the Kinetic Characteristics of HSA Adsorption by Different Types of Activated Carbon Fibres

Eretsky, Eugene

doi:10.1260/0263617001493558

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…First, L. variegatus may be affected by CM‐enriched sediment because of the chemistry of CM (taste, smell, composition) 51, 82, because it has been shown that even 1% carbon amendment can affect the feeding activity of L. variegatus 93. Another explanation may relate to the surface reactivity of CM, with its high affinity for lipids, carbohydrates, and proteins 94, 95. Possibly CM sorb nutrients that serve as a food source for worms or impair digestion processes 52, 82, but no statistically or biologically relevant effect of AC has been found on enzyme activity or digestive fluid surfactance in AC‐amended sediment 52.…”

Section: Effects Of CM On Benthic Species and Communitiesmentioning

confidence: 99%

In situ remediation of contaminated sediments using carbonaceous materials

Rakowska

Kupryianchyk

Harmsen

et al. 2012

Enviro Toxic and Chemistry

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Abstract-Carbonaceous materials (CM), such as activated carbons or biochars, have been shown to significantly reduce porewater concentrations and risks by binding hydrophobic organic compounds (HOCs) present in aquatic sediments. In the present study, the authors review the current state-of-the-art use of CM as an extensive method for sediment remediation, covering both technical and ecological angles. The review addresses how factors such as CM type, particle size and dosage, sediment characteristics, and properties of contaminants affect the effectiveness of CM amendment to immobilize HOCs in aquatic sediments. The authors also review the extent to which CM may reduce bioaccumulation and toxicity of HOCs and whether CM itself has negative effects on benthic species and communities. The review is based on literature and datasets from laboratory as well as field trials with CM amendments. The presence of phases such as natural black carbon, oil, or organic matter in the sediment reduces the effectiveness of CM amendments. Carbonaceous material additions appear to improve the habitat quality for benthic organisms by reducing bioavailable HOC concentrations and toxicity in sediment. The negative effects of CM itself on benthic species, if any, have been shown to be mild. The beneficial effects of reducing toxicity at low CM concentrations most probably outweigh the mild negative effects observed at higher CM concentrations. Environ.

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Section: Effects Of CM On Benthic Species and Communitiesmentioning

confidence: 99%

In situ remediation of contaminated sediments using carbonaceous materials

Rakowska

Kupryianchyk

Harmsen

et al. 2012

Enviro Toxic and Chemistry

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“…During our sediment exposure trials, we observed ingestion of activated carbon particles by N. arenaceodentata, but not L. plumulosus, and it is conceivable that ingested activated carbon affects N. arenaceodentata indirectly because of its sorbent properties. Given its affinity for lipids, carbohydrates (38), and proteins (39), activated carbon could sorb nutrients dissolved in both the aqueous phase and digestive fluid, potentially impairing nutrient uptake. In addition, since the species was observed to ingest activated carbon particles, it is possible that activated carbon might impair digestion through the sorption of enzymes in digestive fluid.…”

Section: Bsaf )mentioning

confidence: 99%

Addition of Activated Carbon to Sediments to Reduce PCB Bioaccumulation by a Polychaete (Neanthes arenaceodentata) and an Amphipod (Leptocheirus plumulosus)

Millward

Bridges

Ghosh

et al. 2005

Environ. Sci. Technol.

180

210

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This work examines the effects of adding coke or activated carbon on the bioavailability of polychlorinated biphenyls (PCBs) in contaminated sedimentfrom South Basin at Hunters Point, San Francisco Bay. We show with 28-day sediment exposure tests that PCB bioaccumulation in a polychaete (Neanthes arenaceodentata) is reduced by 82% following 1-month contact of sediment with activated carbon and by 87% following 6-months contact of sediment with activated carbon. PCB bioaccumulation in an amphipod (Leptocheirus plumulosus) is reduced by 70% following 1-month contact of sediment with activated carbon and by 75% after 6-months contact of sediment with activated carbon. Adding coke had a negligible effect on reducing PCB bioaccumulation, probably because of the low specific surface area and the slow kinetics of PCB diffusion intothe solid coke particles. Reductions in congener bioaccumulation with activated carbon were inversely related to congener Kow, suggesting that the efficacy of activated carbon is controlled by the mass-transfer rate of PCBs from sediment and into activated carbon. We find that reductions in aqueous PCB concentrations in equilibrium with the sediment were similar to reductions in PCB bioaccumulation. While no lethality was observed following activated carbon addition, growth rates were reduced by activated carbon for the polychaete, but not for the amphipod, suggesting the need for further study of the potential impacts of activated carbon on exposed communities. The study suggests that treatment of the biologically active layer of contaminated sediments with activated carbon may be a promising in-situ technique for reducing the bioavailability of sediment-associated PCBs and other hydrophobic organic compounds.

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“…The presence of black carbon also had effects on the biomass and lipid content of L. variegatus (Supplemental Data, Figures S3 and S4). It has been reported that strong sorbents, such as activated carbon, can sequester lipids, carbohydrates, and proteins, which represent essential nutrients for organisms (Eretsky ). Hence, the lower biomass and lipid content in L. variegatus in the black carbon–amended sediments were likely attributable to the sequestration of nutrients by the black carbon amendments.…”

Section: Discussionmentioning

confidence: 99%

Effects of type and quantity of organic carbon on the bioaccessibility of polychlorinated biphenyls in contaminated sediments

Sinche

Nutile

Hartz

et al. 2018

Enviro Toxic and Chemistry

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Organic carbon principally controls sorption and desorption of hydrophobic organic compounds in sediments. We investigated the effects of organic carbon type and quantity on compound bioaccessibility. The desorption of 21 polychlorinated biphenyl (PCB) congeners was determined in spiked sediments amended with black carbon, humic acid, and sawdust at either 3 or 6% organic carbon. Desorption parameters were determined using Tenax sequential extractions and then modeled as operationally defined rapid, slow, and very slow fractions and rate constants. The effects of the amendments on PCB bioaccumulation were also evaluated using Lumbriculus variegatus. The lowest and highest PCB bioaccessibilities were observed in the black carbon and sawdust amendments, respectively. The total amount of PCBs desorbed ranged from 3 to 27% for the black carbon amendments, 12 to 55% for humic acid amendments, 16 to 80% for sawdust amendments, and 35 to 89% for controls. The results also showed that desorption of PCBs was slower in 6% amendments than 3% amendments, and this finding was most evident in humic acid and black carbon amendments. Overall, the trend in PCB bioaccumulation was similar to what was found for compound desorption in that the highest PCB bioaccumulation was observed in controls and sawdust amendments, whereas humic acid and black carbon amendments showed lower bioaccumulation. Finally, the 24-h single-point Tenax and bioaccumulation data were fit to a Tenax regression model. The PCB bioaccumulation was effectively predicted by the model, with 80% of the data falling within the 95% confidence intervals. Environ Toxicol Chem 2018;37:1280-1290. © 2018 SETAC.

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Studies of the Kinetic Characteristics of HSA Adsorption by Different Types of Activated Carbon Fibres

Cited by 3 publications

References 4 publications

In situ remediation of contaminated sediments using carbonaceous materials

In situ remediation of contaminated sediments using carbonaceous materials

Addition of Activated Carbon to Sediments to Reduce PCB Bioaccumulation by a Polychaete (Neanthes arenaceodentata) and an Amphipod (Leptocheirus plumulosus)

Effects of type and quantity of organic carbon on the bioaccessibility of polychlorinated biphenyls in contaminated sediments

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