Hydrodynamic cavitation as an efficient method for the formation of sub-100 nm O/W emulsions with high stability

Zhang, Zhiliang; Wang, Guangquan; Nie, Yong; Ji, Jianbing

doi:10.1016/j.cjche.2016.04.011

Cited by 31 publications

(34 citation statements)

References 29 publications

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“…Also, LPHC has been utilized to produce refined soybean oil-, heptane-, and castor oil-in-deionized water emulsions in the presence of sodium dodecyl sulfate as the emulsifier (1.25%), while generating average emulsion droplet sizes of 27 nm. With an increase in inlet pressure and surfactant concentration, the droplet size decreased [11], and the prepared emulsion was shown to be stable for up to eight months. Other than just oil in water (O/W) emulsions, HC has also been used to produce turmeric oil in skimmed milk emulsion under different types of reactor setups [12].…”

Section: Emulsificationmentioning

confidence: 99%

Controlled Hydrodynamic Cavitation: A Review of Recent Advances and Perspectives for Greener Processing

2020

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The 20th century has witnessed a remarkable enhancement in the demand for varieties of consumer products, ranging from food, pharmaceutical, cosmetics, to other industries. To enhance the quality of the product and to reduce the production cost, industries are gradually inclined towards greener processing technologies. Cavitation-based technologies are gaining interest among processing technologies due to their cost effectiveness in operation, minimization of toxic solvent usage, and ability to obtain superior processed products compared to conventional methods. Also, following the recent advancements, cavitation technology with large-scale processing applicability is only denoted to the hydrodynamic cavitation (HC)-based method. This review includes a general overview of hydrodynamic cavitation-based processing technologies and a detailed discussion regarding the process effectiveness. HC has demonstrated its usefulness in food processing, extraction of valuable products, biofuel synthesis, emulsification, and waste remediation, including broad-spectrum contaminants such as pharmaceuticals, bacteria, dyes, and organic pollutants of concern. Following the requirement of a specific process, HC has been implemented either alone or in combination with other process-intensifying steps, for example, catalyst, surfactant, ultraviolet (UV), hydrogen peroxide (H2O2), and ozone (O3), for better performance. The reactor set-up of HC includes orifice, slit venturi, rotor-stator, and sonolator type constrictions that initiate and control the formation of bubbles. Moreover, the future directions have also been pointed out with careful consideration of specific drawbacks.

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Section: Emulsificationmentioning

confidence: 99%

Controlled Hydrodynamic Cavitation: A Review of Recent Advances and Perspectives for Greener Processing

2020

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“…Cavitation, as a fast phase transition process in liquid, with internal pressure up to its saturated vapor pressure at the working temperature, millions of dissolved gases would be separated out, grow, develop, and collapse in a very short time. [1][2][3][4] Millions of such cavities form and collapse in the region where cavitation took place which created a number of small shock wave reactors locally. 5,6 The high energy released by implosion could destroy chemical bonds and promote cell fission, and the released high energy could be used for chemical and physical transformation, accompanied by transient high temperature phenomenon.…”

Section: Introductionmentioning

confidence: 99%

Study on the performance of a novel hydrodynamic cavitation device for treatment of wastewater

Lü

Zhou

et al. 2022

Asia-Pacific J Chem Eng

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A novel rotational hydrodynamic cavitation device (called WLAC, composed of rotor and stator) was designed for treatment of wastewater, as well as two other structures with different lead angle based on WLAC, namely, LLAC and HLAC. The velocity characteristics, cavitation number, cavitation bubbles distribution, and production capacity of the hydrodynamic cavitation device were analyzed. Experimental results showed that the concentration of ÁOH

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“…The former range from mild effects such as noise emissions and vibrations, to efficiency drop and even erosion of solid walls (Dular and Petkovšek 2015;Luo et al 2016;Dular et al 2019), while positive effects are numerous, stemming from the inherent energy focusing properties of cavitation bubble dynamics. These have applications from chemical (Zupanc et al 2014;Dular et al 2016;Gągol et al 2018) and biological (Šarc et al 2016;Kosel et al 2017;Zupanc et al 2019) wastewater treatment, material productions (Qiu et al 2019), cleaning (Verhaagen and Fernández Rivas 2016), process intensification (Sajjadi et al 2015;Zhang et al 2016b), to a wide field of fundamental research in physics (Azouzi et al 2013), chemistry (Grieser et al 2015;Nikitenko and Pflieger 2017;Podbevsek et al 2018;Podbevšek et al 2021), biology (Patek and Caldwell 2005;Iosilevskii and Weihs 2008;Vilagrosa et al 2012) and medicine (Stride and Coussios 2010).…”

Section: Introductionmentioning

confidence: 99%

Experimental evaluation of methodologies for single transient cavitation bubble generation in liquids

et al. 2021

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Single bubble dynamics are of fundamental importance for understanding the underlying mechanisms in liquid–vapor transition phenomenon known as cavitation. In the past years, numerous studies were published and results were extrapolated from one technique to another and further on to “real-world” cavitation. In the present paper, we highlight the issues of using various experimental approaches to study the cavitation bubble phenomenon and its effects. We scrutinize the transients bubble generation mechanisms behind tension-based and energy deposition-based techniques and overview the physics behind the bubble production. Four vapor bubble generation methods, which are most commonly used in single bubble research, are directly compared in this study: the pulsed laser technique, a high- and low-voltage spark discharge and the tube arrest method. Important modifications to the experimental techniques are implemented, demonstrating improvement of the bubble production range, control and repeatability. Results are compared to other similar techniques from the literature, and an extensive report on the topic is given in the scope of this work. Simple-to-implement techniques are presented and categorized herein, in order to help with future experimental design. Repeatability and sphericity of the produced bubbles are examined, as well as a comprehensive overview on the subject, listing the bubble production range and highlighting the attributes and limitation for the transient cavitation bubble techniques. Graphic abstract

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Hydrodynamic cavitation as an efficient method for the formation of sub-100 nm O/W emulsions with high stability

Cited by 31 publications

References 29 publications

Controlled Hydrodynamic Cavitation: A Review of Recent Advances and Perspectives for Greener Processing

Controlled Hydrodynamic Cavitation: A Review of Recent Advances and Perspectives for Greener Processing

Study on the performance of a novel hydrodynamic cavitation device for treatment of wastewater

Experimental evaluation of methodologies for single transient cavitation bubble generation in liquids

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