Results 51 to 60 of about 669 (145)

Optimization of a hydrodynamic cavitation reactor using salicylic acid dosimetry [PDF]

Chemical Engineering Journal, 2010
In the present work, optimization of a hydrodynamic cavitation reactor, for maximizing the extent of hydroxyl radical generation, has been investigated using salicylic acid as a dosimeter. The effect of different operating parameters such as inlet pressure into the reactor, shape of the orifice, and concentration of salicylic acid employed was ...
Lekhraj P. Amin, Parag R. Gogate, Arthur E. Burgess, David H. Bremner   +3 more
openaire   +1 more source

Influence of Hole Geometry on Performance of a Rotational Hydrodynamic Cavitation Reactor

Frontiers in Energy Research, 2022
Cavitation is a common phenomenon in hydraulic power industry, ship propulsion, pump station and other industrial fields. In the present work, a high-speed camera is used to visualize the flow field in a rotational hydrodynamic cavitation reactor (RHCR ...
Wei Zhang, Chao Xie, Honggang Fan, Bing Liu   +3 more
doaj   +1 more source

Numerical optimization design of vortex diode hydrodynamic cavitation reactor

Journal of Physics: Conference Series, 2019
Abstract Vortex diode is a novel hydrodynamic cavitation reactor, whose cavitation energy yield can be about 3∼8 times higher than the conventional ones. In this study, the numerical orthogonal experiment of the structure(Diameter of the chamber(D), Ratio of the diameter of the chamber to the diameter of axial tube(D/dc), and Ratio of ...
Jian Wang, Wei Chen
openaire   +1 more source

Using CFD simulations to investigate the shear stress in hydrodynamic cavitation reactors coupled with experimental validation using colony count measurements

Scientific Reports, 2022
The current work investigates the shear stress distribution in hydrodynamic cavitation reactors with two different geometries using CFD simulations.
Máté Polgár, Charu Agarwal, Parag Gogate, Gábor Németh, Levente Csóka   +4 more
doaj   +1 more source

Modeling of Hydrodynamic Cavitation Reactors: Reflections on Present Status and Path Forward

ACS Engineering Au, 2022
Hydrodynamic cavitation (HC) is finding ever increasing applications in water, energy, chemicals, and materials sectors. HC generates intense shear, localized hot spots, and hydroxyl radicals, which are harnessed for realizing desired physicochemical transformations.
openaire   +2 more sources

Sonochemical and hydrodynamic cavitation reactors for laccase/hydrogen peroxide cotton bleaching

Ultrasonics Sonochemistry, 2014
The main goal of this work is to develop a novel and environmental-friendly technology for cotton bleaching with reduced processing costs. This work exploits a combined laccase-hydrogen peroxide process assisted by ultrasound. For this purpose, specific reactors were studied, namely ultrasonic power generator type K8 (850 kHz) and ultrasonic bath ...
Gonçalves, Idalina, Martins, Madalena A., Loureiro, Ana, Gomes, Andreia C, Paulo, Artur Cavaco, Silva, Carla Manuela Pereira Marinho da   +5 more
openaire   +3 more sources

Numerical simulation on unsteady cavitating flows in a rotational hydrodynamic cavitation reactor

Journal of Physics: Conference Series
Abstract The RNG k-ε turbulence model and mass transport cavitation model Zwart-Gerber-Belamri are used to simulate unsteady cavitating flows in a rotational hydrodynamic cavitation reactor (RHCR). The RHCR is mainly composed of rotor and stator.
G Q Q G Meng, W J Zhou, Y F Jia
openaire   +1 more source

A hydrodynamic cavitation prototype reactor evaluation for decreasing cephalexin concentration in aqueous solution

Results in Engineering
A prototype of a hydrodynamic cavitation reactor was evaluated to determine the effectiveness of this system on the percentage decrease of cephalexin concentration present in an aqueous solution prepared with ultrapure water.
John Steven Devia-Orjuela, Isabel C. Agudelo-Carrascal, Lizeth N. Gamba-Martínez, Laura Sierra Garzón, Rafael N. Agudelo-Valencia, Fiderman Machuca-Martínez   +5 more
doaj   +1 more source

Hydrodynamic Cavitation in Shockwave-Power-Reactor-Assisted Biodiesel Production in Continuous from Soybean and Waste Cooking Oil

Energies
The transesterification process for biodiesel production is constrained by high thermal input, prolonged residence time, and intensive mechanical agitation.
James R. Vera-Rozo, Edison A. Caicedo-Peñaranda, José M. Riesco-Avila   +2 more
doaj   +1 more source

Cavitation Technology—The Future of Greener Extraction Method: A Review on the Extraction of Natural Products and Process Intensification Mechanism and Perspectives

Applied Sciences, 2019
With growing consumer demand for natural products, greener extraction techniques are found to be potential alternatives especially for pharmaceutical, nutraceutical, and cosmetic manufacturing industries.
Debabrata Panda, Sivakumar Manickam
doaj   +1 more source