Abstract
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.
Original language | English |
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Journal | Journal of Residuals Science & Technology |
Volume | 10 |
Issue number | 2 |
Pages (from-to) | 85-91 |
ISSN | 1544-8053 |
Publication status | Published - 2013 |
Keywords
- Anaerobic digestion
- Ozone pretreatment
- Pharmaceuticals
- Waste
- Products
- Removal