izpis_h1_title_alt

Integral analysis of hydrodynamic cavitation effects on waste activated sludge characteristics, potentially toxic metals, microorganisms and identification of microplastics
ID Kolbl Repinc, Sabina (Avtor), ID Bizjan, Benjamin (Avtor), ID Budhiraja, Vaibhav (Avtor), ID Dular, Matevž (Avtor), ID Gostiša, Jurij (Avtor), ID Brajer Humar, Barbara (Avtor), ID Kaurin, Anela (Avtor), ID Kržan, Andrej (Avtor), ID Levstek, Marjetka (Avtor), ID Morales Arteaga, Juan Francisco (Avtor), ID Petkovšek, Martin (Avtor), ID Rak, Gašper (Avtor), ID Stres, Blaž (Avtor), ID Širok, Brane (Avtor), ID Žagar, Ema (Avtor), ID Zupanc, Mojca (Avtor)

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URLURL - Izvorni URL, za dostop obiščite https://www.sciencedirect.com/science/article/pii/S0048969721064925 Povezava se odpre v novem oknu

Izvleček
Wastewater treatment plants, the last barrier between ever-increasing human activities and the environment, produce huge amounts, of unwanted semi-solid by-product - waste activated sludge. Anaerobic digestion can be used to reduce the amount of sludge. However, the process needs extensive modernisation and refinement to realize its full potential. This can be achieved by using efficient pre-treatment processes that result in high sludge disintegration and solubilization. To this end, we investigated the efficiency of a novel pinned disc rotational generator of hydrodynamic cavitation. The results of physical and chemical evaluation showed a reduction in mean particle size up to 88%, an increase in specific surface area up to 300% and an increase in soluble COD, NH$_4$-N, NO$_3$-N, PO$_4$-P up to 155.8, 126.3, 250 and 29.7%, respectively. Microscopic images confirmed flocs disruption and damage to yeast cells and Epistilys species due to mechanical effects of cavitation such as microjets and shear forces. The observed cell ruptures and cracks were sufficient for the release of small soluble biologically relevant dissolved organic molecules into the bulk liquid, but not for the release of microbial DNA. Cavitation treatment also decreased total Pb concentrations by 70%, which was attributed to the reactions triggered by the chemical effects of cavitation. Additionally, the study confirmed the presence of microplastic particles and fibers of polyethylene, polyethylene terephthalate, polypropylene, and nylon 6 in the waste activated sludge.

Jezik:Angleški jezik
Ključne besede:hydrodynamic cavitation, waste activated sludge, sludge characteristics, microbial damage, potentially toxic metals, microplastics
Vrsta gradiva:Članek v reviji
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FGG - Fakulteta za gradbeništvo in geodezijo
FS - Fakulteta za strojništvo
BF - Biotehniška fakulteta
Status publikacije:Objavljeno
Različica publikacije:Objavljena publikacija
Leto izida:2022
Št. strani:14 str.
Številčenje:Vol. 806, pt. 4, art. 151414
PID:20.500.12556/RUL-133321 Povezava se odpre v novem oknu
UDK:532.528:628.355
ISSN pri članku:0048-9697
DOI:10.1016/j.scitotenv.2021.151414 Povezava se odpre v novem oknu
COBISS.SI-ID:83741955 Povezava se odpre v novem oknu
Datum objave v RUL:22.11.2021
Število ogledov:1212
Število prenosov:202
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Gradivo je del revije

Naslov:Science of the total environment
Skrajšan naslov:Sci. total environ.
Založnik:Elsevier
ISSN:0048-9697
COBISS.SI-ID:26369024 Povezava se odpre v novem oknu

Licence

Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:hidrodinamska kavitacija, odpadno blato, lastnosti blata, poškodbe mikroorganizmov, potencialno nevarne kovine, mikroplastika

Projekti

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:P2-0401
Naslov:Energetsko strojništvo

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:P2-0180
Naslov:Vodarstvo in geotehnika: orodja in metode za analize in simulacije procesov ter razvoj tehnologij

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:J7-2601
Naslov:Metoda dekontaminacije aktivnih blat in njihovih produktov za njihovo trajnostno uporabo kot fosfatna gnojila

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:J7-1814
Naslov:Kavitacija - rešitev za problematiko mikroplastike?

Financer:EC - European Commission
Program financ.:H2020
Številka projekta:860720
Naslov:Microplastics in Europe's freshwater ecosystems: from sources to solutions
Akronim:LimnoPlast

Financer:Drugi - Drug financer ali več financerjev
Program financ.:COST
Številka projekta:CA16215
Naslov:European Network for the Promotion of Portable, Affordable, and Simple Analytical Platforms

Financer:EC - European Commission
Program financ.:H2020
Številka projekta:771567
Naslov:An investigation of the mechanisms at the interaction between cavitation bubbles and contaminants
Akronim:CABUM

Financer:Drugi - Drug financer ali več financerjev
Program financ.:University of Ljubljana, UL Innovation Fund

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