دورية أكاديمية
Preliminary analysis: Effect of a rotary generator of hydrodynamic cavitation on rheology and methane yield of wastewater sludge
| العنوان: | Preliminary analysis: Effect of a rotary generator of hydrodynamic cavitation on rheology and methane yield of wastewater sludge |
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| المؤلفون: | Marko Blagojevič, Benjamin Bizjan, Mojca Zupanc, Jurij Gostiša, Lidija Slemenik Perše, Urška Gradišar Centa, Blaž Stres, Uroš Novak, Blaž Likozar, Gašper Rak, Sabina Kolbl Repinc |
| المصدر: | Ultrasonics Sonochemistry, Vol 107, Iss , Pp 106943- (2024) |
| بيانات النشر: | Elsevier, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Chemistry LCC:Acoustics. Sound |
| مصطلحات موضوعية: | Waste sludge, Hydrodynamic cavitation, Pinned disc, Rheology, Surface tension, Dewaterability, Chemistry, QD1-999, Acoustics. Sound, QC221-246 |
| الوصف: | 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. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1350-4177 |
| Relation: | http://www.sciencedirect.com/science/article/pii/S1350417724001913; https://doaj.org/toc/1350-4177 |
| DOI: | 10.1016/j.ultsonch.2024.106943 |
| URL الوصول: | https://doaj.org/article/af6cdd42230e47d5a234553ccaf61338 |
| رقم الأكسشن: | edsdoj.f6cdd42230e47d5a234553ccaf61338 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 13504177 |
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| DOI: | 10.1016/j.ultsonch.2024.106943 |