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 417994
Title In situ sorption of hydrophobic organic compounds to sediment amended with activated carbon
Author(s) Kupryianchyk, D.; Rakowska, M.I.; Grotenhuis, J.T.C.; Koelmans, A.A.
Source Environmental Pollution 161 (2012)2. - ISSN 0269-7491 - p. 23 - 29.
DOI http://dx.doi.org/10.1016/j.envpol.2011.09.043
Department(s) Aquatic Ecology and Water Quality Management
Sub-department of Environmental Technology
IMARES
WIMEK
Publication type Refereed Article in a scientific journal
Publication year 2012
Keyword(s) polycyclic aromatic-hydrocarbons - polychlorinated biphenyl sorption - environmental black carbon - contaminated sediments - partition-coefficients - marine-sediments - phenanthrene sorption - aqueous solubilities - accumulation factors - native pahs
Abstract Contaminated sediments can be remediated by adding carbonaceous materials (CM), e.g. activated carbons (AC). Here, we analyze published datasets from AC amendment trials to identify variation in the effectiveness of AC in reducing porewater concentrations of hydrophobic organic contaminants (HOCs). The analysis uses a model that separates the contribution of HOC sorption to AC by parameterzing the sorption contributions by amorphous organic matter and black carbon (BC). It appears that sorption to BC increased with LogKOW, whereas sorption to AC showed a relatively narrow range of affinity properties with a median Freundlich LogKF,AC value of 7.2 (µg/kgAC)/(µg/L)n (IQR = 7.0–7.5) for polychlorinated biphenyls (PCBs) and 8.6 (IQR = 8.3–8.8) for polycyclic aromatic hydrocarbons (PAHs). Estimated Freundlich exponents were nF,AC = 0.74 for PCBs and 0.82 for PAH. Sorption to AC was stronger than to BC for chemicals below LogKOW = 6.3–6.6. For HOC risk reduction this is favorable, because chemicals with low KOW show generally higher bioavailable concentrations.
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