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Animal manure separation technologies diminish the environmental burden of steroid hormones
Faculty of Health and Medical Sciences, University of Copenhagen.
Faculty of Health and Medical Sciences, University of Copenhagen.
Faculty of Science, University of Copenhagen.
Faculty of Science, University of Copenhagen.
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2015 (English)In: Environmental Science and Technology Letters, E-ISSN 2328-8930, Vol. 2, no 4, p. 133-137Article in journal (Refereed) Published
Abstract [en]

Newly developed treatment technologies are capable of separating livestock manure into a liquid fraction and a solid fraction using sedimentation, mechanical, and/or chemical methods. These technologies offer a potential means of distributing nutrients to agricultural lands without the unwanted environmental risks associated with the release of steroid hormones to adjacent waterways. To assess the potential benefit of these technologies in reducing the level of release of steroid hormones to adjacent waterways, distribution profiles of nine steroid hormones (pregnenolone, progesterone, dehydroepiandrosterone, androstenedione, testosterone, dihydrotestosterone, estrone, 17α-estradiol, and 17β-estradiol) were determined in raw swine manure, and in solid and liquid fractions separated from ten full-scale manure separation systems. Steroid hormone concentrations, normalized for nitrogen content, were significantly higher in separated solids than in liquids. If separated liquids are applied instead of raw manure, steroid hormone loading can be reduced by a factor of 2 at a constant nitrogen fertilization level.

Place, publisher, year, edition, pages
2015. Vol. 2, no 4, p. 133-137
National Category
Analytical Chemistry
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URN: urn:nbn:se:hkr:diva-14449DOI: 10.1021/acs.estlett.5b00059OAI: oai:DiVA.org:hkr-14449DiVA, id: diva2:845959
Available from: 2015-08-13 Created: 2015-08-13 Last updated: 2018-05-18Bibliographically approved

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Björklund, Erland

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