Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 423908
Title Modeling Trade-off between PAH Toxicity Reduction and Negative Effects of Sorbent Amendments to Contaminated Sediments
Author(s) Kupryianchyk, D.; Rakowska, M.I.; Grotenhuis, J.T.C.; Koelmans, A.A.
Source Environmental Science and Technology 46 (2012)9. - ISSN 0013-936X - p. 4975 - 4984.
Department(s) Aquatic Ecology and Water Quality Management
Sub-department of Environmental Technology
Publication type Refereed Article in a scientific journal
Publication year 2012
Keyword(s) soot-like materials - polycyclic aromatic-hydrocarbons - maximum adsorption capacities - polychlorinated biphenyl sorption - hydrophobic organic-compounds - activated carbon - black carbon - asellus-aquaticus - gammarus-pulex - qualitative approach
Abstract Adding activated carbon (AC) to contaminated sediment has been suggested as an effective method for sediment remediation. AC binds chemicals such as polycyclic aromatic hydrocarbons (PAHs), thus reducing the toxicity of the sediment. Negative effects of AC on benthic organisms have also been reported. Here, we present a conceptual model to quantify the trade-off, in terms of biomass changes, between the advantageous PAH toxicity reduction and the negative effects of AC on populations of benthic species. The model describes population growth, incorporates concentration-effect relationships for PAHs in the pore water and for AC, and uses an equilibrium sorption model to estimate PAH pore water concentrations as a function of AC dosage. We calibrated the model using bioassay data and analyzed it by calculating isoclines of zero population growth for two species. For the sediment evaluated here, the results show that AC may safely protect the benthic habitat against considerable sediment PAH concentrations as long as the AC dosage remains below 4%.
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