from lab-scale to pilot-scale
Ana Kovačič (Author), David Škufca (Author), Mojca Zupanc (Author), Jurij Gostiša (Author), Benjamin Bizjan (Author), Nina Krištofelc (Author), Marija Sollner Dolenc (Author), Ester Heath (Author)

Abstract

The rapid growth in the variety and quantity of contaminants of emerging concern (CEC) in wastewater indicates the necessity for developing efficient and environmentally friendly methods for their removal. This study investigates the removal efficiency of 46 CEC, including 12 bisphenols, from wastewater using a lab and pilot-scale hydrodynamic cavitation generator alone and in combination with UV illumination (pilot-scale). During lab-scale cavitation, the highest removal efficiencies of bisphenols (15-63%) for this specific design of cavitator were obtained at a rotational frequency (vcav)=9500 rpm and time (tcav)=10-min. Temperature and the physicochemical properties (e.g. Kow) of the studied compounds also had a significant effect on removal efficiency. At the pilot-scale, 11 CECs were quantifiable in the wastewater influent, and the generator operated at cav=2290 and 2700rpm. The highest removal efficiencies (15-90%) were obtained at a lower cav=2290 rpm while neither an increase in cav, tcav or the presence of UV-C light increased the removal efficiency. A lower cav also reduced the hydrodynamic power of the cavitator from 477W to 377W, resulting in reduced energy consumption. Overall, the results show the potential of hydrodynamic cavitation for a large-scale application as a pre-treatment technology and pave the way for future improvements in the design of cavitation reactors.

Keywords

contaminants of emerging concern;bisphenol;hydrodynamic cavitation;UV Lab-scale;pilot-scale;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FS - Faculty of Mechanical Engineering
UDC: 547:615
COBISS: 21591299 Link will open in a new window
ISSN: 0048-9697
Views: 1253
Downloads: 290
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Other data

Secondary language: Slovenian
Secondary keywords: Organske spojine;
Type (COBISS): Article
Embargo end date (OpenAIRE): 2022-11-15
Pages: str. 140724-1-140724-7
Volume: ǂVol. ǂ743
Issue: ǂVol. ǂ743
Chronology: 2020
DOI: 10.1016/j.scitotenv.2020.140724
ID: 12852170