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Ozonation and thermal pre-treatment of municipal sewage sludge-implications for toxicity and methane potential
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Kemiska institutionen.
2013 (Engelska)Ingår i: Journal of residuals science & technology, ISSN 1544-8053, Vol. 10, nr 2, s. 85-91Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The aim of this study was to determine effects on methane potential and overall sludge quality from two different sludge pre-treatment technologies (ozonation high/low dosage and thermal treatment 55/70 degrees C). In general both treatments produced increased methane potential. Thermal treatment resulted in higher chemical oxygen demand (COD)-solubilisation, while the highest volatile fatty acids (VFA) increase was obtained with ozonation. Sludges had inhibiting effects in a barley seed germination assay and a yeast oestrogen screen both before and after pre-treatment, but inhibition was reduced by ozone treatment and digestion. No statistical significant reduction in concentrations of included pharmaceuticals could be observed.

Ort, förlag, år, upplaga, sidor
2013. Vol. 10, nr 2, s. 85-91
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Kemi
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URN: urn:nbn:se:umu:diva-79282ISI: 000321541500004OAI: oai:DiVA.org:umu-79282DiVA, id: diva2:642850
Tillgänglig från: 2013-08-23 Skapad: 2013-08-13 Senast uppdaterad: 2018-06-08Bibliografiskt granskad

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