Application of hydrodynamic cavitation in ballast water treatment

Cvetković, Martina; Kompare, Boris; Klemenčić, Aleksandra Krivograd

doi:10.1007/s11356-015-4360-7

Cited by 27 publications

(4 citation statements)

References 74 publications

(114 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ballast water is a major vector of possible invaders, that is, harmful or pathogenic species (Ruiz et al 2000;Drake et al 2007;Faimali et al 2012;Wennberg et al 2013;Cvetković et al 2015). Once the ballast water is discharged, organisms can be successful if they are released in favorable environmental conditions (Smayda 2007;Hess-Erga et al 2010;Sieracki et al 2014), becoming a threat to receptor ecosystems, human activities, and human health (Pimentel et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of ultraviolet disinfection of microalgae by growth modeling: application to ballast water treatment

et al. 2016

View full text Add to dashboard Cite

Ultraviolet disinfection is a frequent option for eliminating viable organisms in ballast water to fulfill international and national regulations. The objective of this work is to evaluate the reduction of microalgae able to reproduce after UV irradiation, based on their growth features. A monoculture of microalgae Tisochrysis lutea was irradiated with different ultraviolet doses (UV-C 254 nm) by a flow-through reactor. A replicate of each treated sample was held in the dark for 5 days simulating a treatment during the ballasting; another replicate was incubated directly under the light, corresponding to the treatment application during de-ballasting. Periodic measurements of cell density were taken in order to obtain the corresponding growth curves. Irradiated samples depicted a regrowth following a logistic curve in concordance with the applied UV dose. By modeling these curves, it is possible to obtain the initial concentration of organisms able to reproduce for each applied UV dose, thus obtaining the dose-survival profiles, needed to determine the disinfection kinetics. These dose-survival profiles enable detection of a synergic effect between the ultraviolet irradiation and a subsequent dark period; in this sense, the UV dose applied during the ballasting operation and subsequent dark storage exerts a strong influence on microalgae survival. The proposed methodology, based on growth modeling, established a framework for comparing the UV disinfection by different devices and technologies on target organisms. This procedure may also assist the understanding of the evolution of treated organisms in more complex assemblages such as those that exist in natural ballast water.

show abstract

Section: Introductionmentioning

confidence: 99%

Evaluation of ultraviolet disinfection of microalgae by growth modeling: application to ballast water treatment

et al. 2016

View full text Add to dashboard Cite

show abstract

“…The propeller speed also decreased in some steam engine ships. For this phenomenon, Barnaby and Parsons first definitely put forward the 'cavitation' (Ozonek 2012;Cvetkovićet al 2015), which referred to hydrodynamic cavitation. Hydrodynamic cavitation refers to the process of cavitation bubble formation, growth, and collapse in the liquid when the local pressure of the fluid is lower than the saturated vapor pressure.…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamic cavitation as an efficient water treatment method for various sewage:- A review

Song

Hou

Zhang

et al. 2022

Water Science and Technology

View full text Add to dashboard Cite

With the development of industry and the rapid growth of population, the current water treatment technologies face much challenges. Hydrodynamic cavitation as a green and efficient means of water treatment method has attracted much attention. During the hydrodynamic cavitation, enormous energy could be released into the surrounding liquid which causes thermal effects (local hotspots with 4,600 K), mechanical effects (pressures of 1,500 bar) and chemical effects (hydroxyl radicals). These conditions can degrade bacteria and organic substance in sewage. Moreover, the combination of hydrodynamic cavitation and other water treatment methods can produce coupling effect. In this review, we summary the methods of hydrodynamic cavitation and the performance of water treatment for different types of sewage. The application of hydrodynamic cavitation reactors with different structures in water treatment have also been evaluated and discussed. The design and optimization of high-performance hydrodynamic cavitation reactor is the most crucial issues for the application of hydrodynamic cavitation in water treatment. Finally, recommendations are provided for the future progress of hydrodynamic cavitation for water treatment.

show abstract

“…Recently, hydrodynamic cavitation (HC) has indicated considerable application prospects in the field of sewage treatment [ 9 ], owing to numerous advantages, such as its small scale, high energy efficiency, and low energy consumption [ 10 , 11 , 12 , 13 ]. HC occurs when a fluid passes through a contractile-divergent structure in an orifice plate or a Venturi [ 14 , 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Rapid Degradation of Chlortetracycline Using Hydrodynamic Cavitation with Hydrogen Peroxide

Chen

Meng

Sun

et al. 2022

IJERPH

View full text Add to dashboard Cite

Chlortetracycline (CTC), which has been frequently detected in surface water, is generated primarily by the discharge of high-concentration CTC wastewater from pharmaceutical and livestock plants. The development of effective CTC degradation technology is critical. In this study, the extent of CTC degradation at 80 mg/L was investigated by combining hydrodynamic cavitation (HC) and hydrogen peroxide (H2O2). The results indicate degradation ratios of 88.7% and 93.8% at 5 and 30 min, respectively. Furthermore, the possible mechanisms of CTC degradation were determined via HPLC-MS. The CTC degradation pathways include ring openings, C–N bond cleavage, demethylation, dehydroxylation, and desaturation in the sole system of HC, and a series of additional reactions, such as glycine conjugation and the cleavage of C–C double bonds, occurs in the binary system of HC + H2O2. Nevertheless, the treated water poses ecological risks and cannot be directly discharged into the environment. Therefore, HC + H2O2 treatment may be a rapid and effective primary method for the degradation of high-concentration CTC in pharmaceutical factories.

show abstract

Application of hydrodynamic cavitation in ballast water treatment

Cited by 27 publications

References 74 publications

Evaluation of ultraviolet disinfection of microalgae by growth modeling: application to ballast water treatment

Evaluation of ultraviolet disinfection of microalgae by growth modeling: application to ballast water treatment

Hydrodynamic cavitation as an efficient water treatment method for various sewage:- A review

Rapid Degradation of Chlortetracycline Using Hydrodynamic Cavitation with Hydrogen Peroxide

Contact Info

Product

Resources

About