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Responses of Lumbriculus variegatus to Activated Carbon Amendments in Uncontaminated Sediments

Lookup NU author(s): Professor David Werner

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Abstract

Activated carbon (AC) amendment is a recently developed sediment remediation method. The strong hydrophobic organic contaminant sorption efficiency of AC has been shown in several studies, but effects on benthic organisms require more investigation. The AC induced effects on egestion rate, growth and reproduction of Lumbriculus variegatus were studied by applying bituminous coal based AC in three different particle size fractions, namely <63 mu m (90%, AC(p)), 63-200 mu m (AC(p)) and 1000 mu m (AC(g)), to natural uncontaminated (HS) and artificial sediment (AS). Egestion rate, growth and reproduction decreased with increasing AC concentration and finer AC particle fractions, effects being stronger on HS than on AS sediment. Lipid content in AS was reduced already at the lowest AC doses applied (AC(p) and AC(m) 0.05%, AC(g) 0.25%). In addition, hormesis-like response was observed in growth (AS) and reproduction (AS, HS) indicating that AC may disturb organisms even at very low doses. Potential ecological effects need to be further evaluated in an amendment- and site-specific manner.


Publication metadata

Author(s): Nybom I, Werner D, Leppanen MT, Siavalas G, Christanis K, Karapanagioti HK, Kukkonen JVK, Akkanen J

Publication type: Article

Publication status: Published

Journal: Environmental Science & Technology

Year: 2012

Volume: 46

Issue: 23

Pages: 12895-12903

Print publication date: 07/11/2012

ISSN (print): 0013-936X

ISSN (electronic): 1520-5851

Publisher: American Chemical Society

URL: http://dx.doi.org/10.1021/es303430j

DOI: 10.1021/es303430j


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