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Barley seed germination/root elongation toxicity test for evaluation of sludge pre-treatment
Technical University of Denmark, Denmark.ORCID iD: 0000-0002-5472-8553
Technical University of Denmark, Denmark.
Technical University of Denmark, Denmark.
Technical University of Denmark, Denmark.
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2013 (English)In: Presented at the 1st International IWA Conference on Holistic Sludge Management, Västerås, Sweden, May 6-8, 2013, 2013, p. 1-8Conference paper, Published paper (Refereed)
Abstract [en]

Application of sludge from wastewater treatment plants (WWTPs) on agricultural land is an approach for nutrient recycling that rise challenges due to recalcitrant and harmful pollutants. In this study we assessed the feasibility of a seed germination test to evaluate sludge ecotoxicity and compared germination responses from two test parameters, root elongation and seed germination (sprouts elongation) of the barley (Hordeum vulgare). 2nd objective was to evaluate sewage sludge pre-treatments at batch-scale of sludge samples from two WWTPs using anaerobic digestion, and thermal and ozonation pre-treatments. Glyphosate and eco-labelled soil were used as references. Inhibition of germination of seeds exposed to the glyphosate and sludge was registered and thus germination was successfully applied for sludge ecotoxicity assessment, and using the root elongation as the end-point was both faster and more precise than the sprout elongation. In comparison of pre-treated raw samples and pre-treaded and subsequently digested sludge the effects of the pre-treatments were limited and hence, the anaerobic digestion in it-self gave the foremost detoxification.

Place, publisher, year, edition, pages
2013. p. 1-8
Keywords [en]
Detoxification, Growth inhibition, Ozonation, Sewage sludge, Thermal treatment, Toxic responses
National Category
Environmental Biotechnology Environmental Engineering
Identifiers
URN: urn:nbn:se:lnu:diva-87215OAI: oai:DiVA.org:lnu-87215DiVA, id: diva2:1341356
Conference
1st International IWA Conference on Holistic Sludge Management, Västerås, Sweden, May 6-8, 2013
Available from: 2019-08-08 Created: 2019-08-08 Last updated: 2019-09-02Bibliographically approved

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Eriksson, Eva

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf