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Preliminary analysis - effect of a rotary generator of hydrodynamic cavitation on rheology and methane yield of wastewater sludgeBlagojevič, Marko, vodarstvo in geotehnika, 1996- ...Slightly acidic (pH 5.1) waste sludge with 4.7 % Total Solids (TS) was treated on a laboratory scale pined disc rotary generator of hydrodynamic cavitation (PD RGHC). Influence of four rotor discs ... with different number of cavitation generation units (CGUs) was investigated: 8-pins, 12-pins, 16-pins and 8-prism elements. The effect of hydrodynamic cavitation (HC) was investigated by analyzing rheological properties, surface tension, dewaterability, and particle size distribution. After subjecting the sludge to 30 cavitation passes, the dewatering ability of the sludge significantly decreased, resulting in a more than two-fold increase in Capillary Suction Time (CST). All regimes were successful in disintegrating particles to smaller sizes. A slight increase of sludge surface tension was measured post cavitation. Cavitated samples displayed a zero-shear viscosity, in contrast to the untreated sample, where viscosity noticeably increased as shear stress decreased. HC did not improve methane yield. Statistically significant correlations between physio-chemical properties and apparent viscosity at low shear stress were identified. Although there were no discernible statistical differences in sludge characteristics, some trends are visible among investigated CGU designs and warrant further research.Vir: Ultrasonics Sonochemistry. - ISSN 1350-4177 (Vol. 107, jul. 2024, str. 1-12)Vrsta gradiva - članek, sestavni delLeto - 2024Jezik - angleškiCOBISS.SI-ID - 198974723
Avtor
Blagojevič, Marko, vodarstvo in geotehnika, 1996- |
Bizjan, Benjamin |
Zupanc, Mojca, 1980- |
Gostiša, Jurij |
Slemenik Perše, Lidija |
Gradišar Centa, Urška |
Stres, Blaž |
Novak, Uroš, 1985- |
Likozar, Blaž |
Rak, Gašper |
Kolbl Repinc, Sabina, sanitarno inženirstvo, 1982-
Teme
waste sludge |
hydrodynamic cavitation |
pinned disc |
rheology |
surface tension |
dewaterability |
methane
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Baze podatkov, v katerih je revija indeksirana
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Blagojevič, Marko, vodarstvo in geotehnika, 1996- | 55917 |
Bizjan, Benjamin | 35646 |
Zupanc, Mojca, 1980- | 33926 |
Gostiša, Jurij | 39528 |
Slemenik Perše, Lidija | 22701 |
Gradišar Centa, Urška | 36365 |
Stres, Blaž | 19104 |
Novak, Uroš, 1985- | 33161 |
Likozar, Blaž | 25446 |
Rak, Gašper | 29190 |
Kolbl Repinc, Sabina, sanitarno inženirstvo, 1982- | 34230 |
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