Geochemical and ecotoxicological assessment of iron- and steel-making slags for potential use in environmental applications

Wendling, Laura A., Binet, Monique T., Yuan, Zheng, Gissi, Francesca, Koppel, Darren J. and Adams, Merrin S. (2013) Geochemical and ecotoxicological assessment of iron- and steel-making slags for potential use in environmental applications. Environmental Toxicology and Chemistry, 32 11: 2602-2610. doi:10.1002/etc.2342


Author Wendling, Laura A.
Binet, Monique T.
Yuan, Zheng
Gissi, Francesca
Koppel, Darren J.
Adams, Merrin S.
Title Geochemical and ecotoxicological assessment of iron- and steel-making slags for potential use in environmental applications
Journal name Environmental Toxicology and Chemistry   Check publisher's open access policy
ISSN 0730-7268
1552-8618
Publication date 2013-11-01
Sub-type Article (original research)
DOI 10.1002/etc.2342
Open Access Status
Volume 32
Issue 11
Start page 2602
End page 2610
Total pages 9
Place of publication Hoboken, NJ, United States
Publisher John Wiley & Sons
Language eng
Formatted abstract
Prior to the productive use of iron- and steel-making slags as environmental amendments, a risk assessment supported by material characterization concomitant with leaching and ecotoxicological testing is necessary. Five iron- and steel-making slags were characterized geochemically, and the leachability of their elemental constituents was assessed. The toxicity of slag leachate to microalgae (Chlorella sp.), cladocerans (Ceriodaphnia dubia), and bacteria (Vibrio fischeri) was related to elemental composition. Slag leachates with the highest concentrations of dissolved elements were the most toxic (10% effective concentration [EC10] ~1%), whereas those with the lowest concentrations of elements were the least toxic (EC10 63–85%). It was not possible to determine which elements caused the observed toxicity; however, comparisons with contaminant guidelines and published toxicity data identified several elements of potential environmental concern. Low to moderate activities were measured for radionuclides in the U and Th decay chains in slags. Based on these data, some of the slags examined herein are potentially suitable for use as environmental amendments following ≥10 times dilution to ameliorate potential toxic effects because of leachate pH.
Keyword Aquatic toxicity
Leachate
Radioactivity
By-product
Metal
Byproduct
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Non HERDC
School of Agriculture and Food Sciences
 
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Created: Sat, 01 Feb 2014, 01:38:32 EST by Laura Wendling on behalf of School of Agriculture and Food Sciences