Dynamics of cavitation bubbles in viscous liquids in a tube during a transient process
Ultrason Sonochem. 2024 Mar 5;104:106840. doi: 10.1016/j.ultsonch.2024.106840. Online ahead of print.ABSTRACTWe experimentally, numerically, and theoretically investigate the dynamics of cavitation bubbles in viscous liquids in a tube during a transient process. In experiments, cavitation bubbles are generated by a modified tube-arrest setup, and the bubble evolution is captured with high-speed imaging. Numerical simulations using OpenFOAM are employed to validate our quasi-one-dimensional theoretical model, which effectively characterizes the bubble dynamics. We find that cavitation onset is minimally affected by the liqu...
Source: Ultrasonics Sonochemistry - March 8, 2024 Category: Chemistry Authors: Zhichao Wang Peng Xu Zibo Ren Liufang Yu Zhigang Zuo Shuhong Liu Source Type: research
Selective (sono)photocatalytic cleavage of lignin-inspired β-O-4 linkages to phenolics by ultrasound derived 1-D titania nanomaterials
Ultrason Sonochem. 2024 Mar 2;104:106829. doi: 10.1016/j.ultsonch.2024.106829. Online ahead of print.ABSTRACTCatalytic conversion of lignin to value-added aromatic compounds is still an open challenge, since the selective cleavage of the linkages interconnecting the aromatic molecules, especially the β-O-4 ones, is not efficiently achieved yet. Herein, novel titania-based nanostructured materials were synthesized using low-power-low-frequency ultrasound that demonstrated high efficiency for the selective cleavage of Cα-Cβ bond of β-O-4 linkages of lignin-inspired model compounds. Going a step ahead, experiments of sono...
Source: Ultrasonics Sonochemistry - March 8, 2024 Category: Chemistry Authors: Abdul Qayyum Dimitrios A Giannakoudakis Dariusz Łomot Ram ón Fernando Colmenares-Quintero Kostiantyn Nikiforow Alec P LaGrow Juan Carlos Colmenares Source Type: research
Fabrication of high-preformance emulsifier from conjugating maltodextrin onto myofibrillar protein peptide with microwave- ultrasound synergy
In this study, we systematically investigated the emulsifying capabilities of myofibrillar protein (MP)- and MP peptide (MPP)-based conjugates synthesized through intensification techniques: water bath (WB), microwave, ultrasound, and the combined ultrasound-microwave (UM) methods. Compared with WB, microwave, and ultrasound treatments, the combined UM treatment greatly promoted the glycation reaction because ultrasound and microwave mutually reinforced modification effects. The resultant conjugate structure tended to unfold with more flexible conformation and homogeneous morphology. Moreover, the emulsifying properties of...
Source: Ultrasonics Sonochemistry - March 7, 2024 Category: Chemistry Authors: Zhiyu Li Xiaomei Zhong Cuirong Luan Nanhua Wen Chuanyang Shi Xiaoyu Lin Chao Zhao Yang Zhang Lianyu Luo Liang Zhang Yijing Wu Jie Yang Source Type: research
Continuous ultrasonic ozone coupling technology-assisted control of ceramic membrane fouling coupled enhanced multiphase mixing to treat dye wastewater and CFD flow field simulation
In this study, ozone catalysts (hydrogenation-modified red mud, HM-RM) successfully prepared by hydrogenation-modification of industrial hazardous solid waste red mud (RM) as a raw material in accordance with the viewpoint of treating waste with waste and using waste. Meanwhile, as for the common phenomenon of membrane fouling, uneven distribution of multiphase solid catalysts and ozone in liquids, the addition of ultrasound can not only disperse materials, but also play a role in online cleaning of ceramic membranes and catalysts. The optimum treatment conditions for Rhodamine B (RhB) solution with volume of 2 L and conce...
Source: Ultrasonics Sonochemistry - March 7, 2024 Category: Chemistry Authors: Jinshan Tang Zhiliang Cheng Xuan Zhang Jinyu Sun Zhaoqiang Liu Hao Zhang Shengmei Tan Facheng Qiu Source Type: research
On efficient modelling of radical production in cavitation assisted reactors
Ultrason Sonochem. 2024 Mar 2;104:106833. doi: 10.1016/j.ultsonch.2024.106833. Online ahead of print.ABSTRACTProcess intensification by cavitation is gaining widespread attention due to the benefits that the intense bubble collapse conditions can provide, yet, several knowledge gaps exist in the modelling of such systems. This work studies the numerical prediction of single bubble dynamics and the various approaches that can be employed to estimate the changes in the chemical composition of cavitating bubbles. Specific emphasis is placed on the prediction of the radical production rates during bubble collapse and the compu...
Source: Ultrasonics Sonochemistry - March 7, 2024 Category: Chemistry Authors: Suat Canberk Ozan Pascal Jan Muller Jan Hendrik Cloete Source Type: research
Fabrication of high-preformance emulsifier from conjugating maltodextrin onto myofibrillar protein peptide with microwave- ultrasound synergy
In this study, we systematically investigated the emulsifying capabilities of myofibrillar protein (MP)- and MP peptide (MPP)-based conjugates synthesized through intensification techniques: water bath (WB), microwave, ultrasound, and the combined ultrasound-microwave (UM) methods. Compared with WB, microwave, and ultrasound treatments, the combined UM treatment greatly promoted the glycation reaction because ultrasound and microwave mutually reinforced modification effects. The resultant conjugate structure tended to unfold with more flexible conformation and homogeneous morphology. Moreover, the emulsifying properties of...
Source: Ultrasonics Sonochemistry - March 7, 2024 Category: Chemistry Authors: Zhiyu Li Xiaomei Zhong Cuirong Luan Nanhua Wen Chuanyang Shi Xiaoyu Lin Chao Zhao Yang Zhang Lianyu Luo Liang Zhang Yijing Wu Jie Yang Source Type: research
Continuous ultrasonic ozone coupling technology-assisted control of ceramic membrane fouling coupled enhanced multiphase mixing to treat dye wastewater and CFD flow field simulation
In this study, ozone catalysts (hydrogenation-modified red mud, HM-RM) successfully prepared by hydrogenation-modification of industrial hazardous solid waste red mud (RM) as a raw material in accordance with the viewpoint of treating waste with waste and using waste. Meanwhile, as for the common phenomenon of membrane fouling, uneven distribution of multiphase solid catalysts and ozone in liquids, the addition of ultrasound can not only disperse materials, but also play a role in online cleaning of ceramic membranes and catalysts. The optimum treatment conditions for Rhodamine B (RhB) solution with volume of 2 L and conce...
Source: Ultrasonics Sonochemistry - March 7, 2024 Category: Chemistry Authors: Jinshan Tang Zhiliang Cheng Xuan Zhang Jinyu Sun Zhaoqiang Liu Hao Zhang Shengmei Tan Facheng Qiu Source Type: research
On efficient modelling of radical production in cavitation assisted reactors
Ultrason Sonochem. 2024 Mar 2;104:106833. doi: 10.1016/j.ultsonch.2024.106833. Online ahead of print.ABSTRACTProcess intensification by cavitation is gaining widespread attention due to the benefits that the intense bubble collapse conditions can provide, yet, several knowledge gaps exist in the modelling of such systems. This work studies the numerical prediction of single bubble dynamics and the various approaches that can be employed to estimate the changes in the chemical composition of cavitating bubbles. Specific emphasis is placed on the prediction of the radical production rates during bubble collapse and the compu...
Source: Ultrasonics Sonochemistry - March 7, 2024 Category: Chemistry Authors: Suat Canberk Ozan Pascal Jan Muller Jan Hendrik Cloete Source Type: research
Combined effects of high-intensity ultrasound treatment and hydrogen peroxide addition on the thermal stabilities of myofibrillar protein emulsions at low ionic strengths
In conclusion, the combination of HIU and H2O2 treatment is a promising approach to suppress heat-induced MP aggregation and improve the thermal stability of corresponding emulsions.PMID:38442572 | DOI:10.1016/j.ultsonch.2024.106841 (Source: Ultrasonics Sonochemistry)
Source: Ultrasonics Sonochemistry - March 5, 2024 Category: Chemistry Authors: Siqi Zhao Yubo Zhao Haotian Liu Qian Chen Hongbo Sun Baohua Kong Source Type: research
Combined effects of high-intensity ultrasound treatment and hydrogen peroxide addition on the thermal stabilities of myofibrillar protein emulsions at low ionic strengths
In conclusion, the combination of HIU and H2O2 treatment is a promising approach to suppress heat-induced MP aggregation and improve the thermal stability of corresponding emulsions.PMID:38442572 | DOI:10.1016/j.ultsonch.2024.106841 (Source: Ultrasonics Sonochemistry)
Source: Ultrasonics Sonochemistry - March 5, 2024 Category: Chemistry Authors: Siqi Zhao Yubo Zhao Haotian Liu Qian Chen Hongbo Sun Baohua Kong Source Type: research
Special issue on "Ultrasound meets photocatalysis: recent trends in photocatalyst synthesis, hybrid processes, and piezo-enhanced strategies"
Ultrason Sonochem. 2024 Feb 21:106825. doi: 10.1016/j.ultsonch.2024.106825. Online ahead of print.NO ABSTRACTPMID:38438289 | DOI:10.1016/j.ultsonch.2024.106825 (Source: Ultrasonics Sonochemistry)
Source: Ultrasonics Sonochemistry - March 4, 2024 Category: Chemistry Authors: Daniela Meroni Ermelinda Falletta Claudia L Bianchi Source Type: research
Special issue on "Ultrasound meets photocatalysis: recent trends in photocatalyst synthesis, hybrid processes, and piezo-enhanced strategies"
Ultrason Sonochem. 2024 Feb 21:106825. doi: 10.1016/j.ultsonch.2024.106825. Online ahead of print.NO ABSTRACTPMID:38438289 | DOI:10.1016/j.ultsonch.2024.106825 (Source: Ultrasonics Sonochemistry)
Source: Ultrasonics Sonochemistry - March 4, 2024 Category: Chemistry Authors: Daniela Meroni Ermelinda Falletta Claudia L Bianchi Source Type: research
An implementation of class D inverter for ultrasonic transducer mixed powder mixture
Ultrason Sonochem. 2024 Feb 29;104:106838. doi: 10.1016/j.ultsonch.2024.106838. Online ahead of print.ABSTRACTUltrasonic transducers (UTs) are the main components for generating sonic waves. These types of transducers are nonlinear loads, and they are adversely affected by changes in mechanical load or temperature. UTs are operated in the region close to the resonant frequency. An ultrasonic transducer needs to be driven by a high-frequency inverter. In this paper, a Class D resonant inverter circuit is implemented for ultrasonic mixer application. The proposed circuit operates at 34306 Hz at 140 V and has low cost and siz...
Source: Ultrasonics Sonochemistry - March 3, 2024 Category: Chemistry Authors: Mehmet Ta şlıyol Selim Öncü Muhammet E Turan Source Type: research
Sensitivity improvement of subharmonic-based pressure measurement using phospholipid-coated monodisperse microbubbles
Ultrason Sonochem. 2024 Feb 23;104:106830. doi: 10.1016/j.ultsonch.2024.106830. Online ahead of print.ABSTRACTThe use of the subharmonic signal from microbubbles exposed to ultrasound is a promising safe and cost-effective approach for the non-invasive measurement of blood pressure. Achieving a high sensitivity of the subharmonic amplitude to the ambient overpressure is crucial for clinical applications. However, currently used microbubbles have a wide size distribution and diverse shell properties. This causes uncertainty in the response of the subharmonic amplitude to changes in ambient pressure, which limits the sensiti...
Source: Ultrasonics Sonochemistry - March 3, 2024 Category: Chemistry Authors: Pengcheng Wang Chunjie Tan Xiang Ji Jingfeng Bai Alfred C H Yu Peng Qin Source Type: research
Bubble oscillations at low frequency ultrasound for biological applications
Ultrason Sonochem. 2024 Feb 23:106816. doi: 10.1016/j.ultsonch.2024.106816. Online ahead of print.ABSTRACTBubbles oscillating in the presence of ultrasound is commonly employed in biomedical applications for drug delivery, ultrasound enhanced thrombolysis, and the transport and manipulation of cells. This is possible because bubbles tend to interact with the ultrasound to undergo periodic shape changes known as shape-mode oscillation, concomitant with the generation of liquid agitation or streaming. This phenomenon is examined both experimentally and theoretically on a single bubble at a frequency of (45 ± 1) kHz. Effects...
Source: Ultrasonics Sonochemistry - March 3, 2024 Category: Chemistry Authors: Joydip Mondal Yue Wu Arpit Mishra Farzan Akbaridoust Ivan Marusic Parthasarathi Ghosh Muthupandian Ashokkumar Source Type: research
