Sonochemical synthesis of SnS and SnS < sub > 2 < /sub > quantum dots from aqueous solutions, and their photo- and sonocatalytic activity
Ultrason Sonochem. 2024 Mar 6;105:106834. doi: 10.1016/j.ultsonch.2024.106834. Online ahead of print.ABSTRACTOur study reports the ultrasound-assisted synthesis of SnS and SnS2 in the form of nanoparticles using aqueous solutions of respective tin chloride and thioacetamide varying sonication time. The presence of both compounds is confirmed by powder X-ray diffraction, energy-dispersive X-ray spectroscopy, as well as Raman and FT-IR spectroscopic techniques. The existence of nanoparticles is proven by powder X-ray diffraction investigation and by high resolution transmission electron microscopy observations. The size of n...
Source: Ultrasonics Sonochemistry - March 24, 2024 Category: Chemistry Authors: Grzegorz Matyszczak Tomasz Plocinski Piotr Dluzewski Aleksandra Fidler Cezariusz Jastrzebski Krystyna Lawniczak-Jablonska Aleksandra Drzewiecka-Antonik Anna Wolska Krzysztof Krawczyk Source Type: research
Effects of high-pressure homogenization and ultrasound on the composition, structure, and physicochemical properties of proteins extracted from Nannochloropsis Oceania
This study examined the effects of high-pressure homogenization (HPH) and ultrasonication pre-treatment on the structural and physicochemical properties of proteins extracted from defatted Nannochloropsis Oceania biomass (DNOB). HPH treatment was found to enhance the solubility of protein extracted from DNOB compared to ultrasound, where samples pretreated with three passes (3P) of HPH exhibited lower solubility than two passes (2P). The morphology of extracted samples was visualized by scanning electron microscopy, which HPH pre-treatment, especially with more passes, were able to breakdown DNOB into fragments. Alternativ...
Source: Ultrasonics Sonochemistry - March 23, 2024 Category: Chemistry Authors: Wee Jian Cedric Sow Juan Du Source Type: research
Acoustic cavitation for agri-food applications: Mechanism of action, design of new systems, challenges and strategies for scale-up
Ultrason Sonochem. 2024 Mar 16;105:106850. doi: 10.1016/j.ultsonch.2024.106850. Online ahead of print.ABSTRACTAcoustic cavitation, an intriguing phenomenon resulting from the interaction of sound waves with a liquid medium, has emerged as a promising avenue in agri-food processing, offering opportunities to enhance established processes improving primary production of ingredients and further food processing. This comprehensive review provides an in-depth analysis of the mechanisms, design considerations, challenges and scale-up strategies associated with acoustic cavitation for agri-food applications. The paper starts by e...
Source: Ultrasonics Sonochemistry - March 23, 2024 Category: Chemistry Authors: Xianglu Zhu Rahel Suchintita Das Mysore Lokesh Bhavya Marco Garcia-Vaquero Brijesh K Tiwari Source Type: research
Effects of high-pressure homogenization and ultrasound on the composition, structure, and physicochemical properties of proteins extracted from Nannochloropsis Oceania
This study examined the effects of high-pressure homogenization (HPH) and ultrasonication pre-treatment on the structural and physicochemical properties of proteins extracted from defatted Nannochloropsis Oceania biomass (DNOB). HPH treatment was found to enhance the solubility of protein extracted from DNOB compared to ultrasound, where samples pretreated with three passes (3P) of HPH exhibited lower solubility than two passes (2P). The morphology of extracted samples was visualized by scanning electron microscopy, which HPH pre-treatment, especially with more passes, were able to breakdown DNOB into fragments. Alternativ...
Source: Ultrasonics Sonochemistry - March 23, 2024 Category: Chemistry Authors: Wee Jian Cedric Sow Juan Du Source Type: research
Acoustic cavitation for agri-food applications: Mechanism of action, design of new systems, challenges and strategies for scale-up
Ultrason Sonochem. 2024 Mar 16;105:106850. doi: 10.1016/j.ultsonch.2024.106850. Online ahead of print.ABSTRACTAcoustic cavitation, an intriguing phenomenon resulting from the interaction of sound waves with a liquid medium, has emerged as a promising avenue in agri-food processing, offering opportunities to enhance established processes improving primary production of ingredients and further food processing. This comprehensive review provides an in-depth analysis of the mechanisms, design considerations, challenges and scale-up strategies associated with acoustic cavitation for agri-food applications. The paper starts by e...
Source: Ultrasonics Sonochemistry - March 23, 2024 Category: Chemistry Authors: Xianglu Zhu Rahel Suchintita Das Mysore Lokesh Bhavya Marco Garcia-Vaquero Brijesh K Tiwari Source Type: research
Ultrasonic-assisted extraction to enhance the recovery of bioactive phenolic compounds from Commiphora gileadensis leaves
Ultrason Sonochem. 2024 Mar 18;105:106852. doi: 10.1016/j.ultsonch.2024.106852. Online ahead of print.ABSTRACTThe "ultrasonic-assisted extraction (UAE)" method was utilized in this work to assess how different process parameters affected the yield and recovery of phenolic compounds from the leaf of Commiphora gileadensis, which is one of the medicinal plants with a variety of biological functions. Its leaf is used for a various of therapeutic applications, such as the treatment of bacterial infections, inflammation, and wound healing. The "One-Factor-At-a-Time (OFAT)" approach was employed to examine the impacts of various...
Source: Ultrasonics Sonochemistry - March 22, 2024 Category: Chemistry Authors: Aiman A Bin Mokaizh Abdurahman Hamid Nour Kaouther Kerboua Source Type: research
Numerical simulation of cavitation-vortex interaction mechanism in an advanced rotational hydrodynamic cavitation reactor
This study investigated the interaction mechanism between cavitation and vortex in a representative interaction-type ARHCR for the first time using the "simplified flow field strategy" and the Q-criterion. The findings reveal that the flow instability caused by CGUs leads to intricate helical and vortex flows, subsequently giving rise to both sheet and vortex cavitation. Subsequently, utilizing the Q-criterion, the vortex structures are identified to be concentrated inside and at CGU edges with evolution process of mergence and separation. These vortex structures directly influence the shape and dimensions of cavities, est...
Source: Ultrasonics Sonochemistry - March 21, 2024 Category: Chemistry Authors: Gaoju Xia Weibin You Sivakumar Manickam Joon Yong Yoon Xiaoxu Xuan Xun Sun Source Type: research
Numerical simulation of cavitation-vortex interaction mechanism in an advanced rotational hydrodynamic cavitation reactor
This study investigated the interaction mechanism between cavitation and vortex in a representative interaction-type ARHCR for the first time using the "simplified flow field strategy" and the Q-criterion. The findings reveal that the flow instability caused by CGUs leads to intricate helical and vortex flows, subsequently giving rise to both sheet and vortex cavitation. Subsequently, utilizing the Q-criterion, the vortex structures are identified to be concentrated inside and at CGU edges with evolution process of mergence and separation. These vortex structures directly influence the shape and dimensions of cavities, est...
Source: Ultrasonics Sonochemistry - March 21, 2024 Category: Chemistry Authors: Gaoju Xia Weibin You Sivakumar Manickam Joon Yong Yoon Xiaoxu Xuan Xun Sun Source Type: research
Ultrasound viscous reduction effects on the proteolysis of soy protein isolate at a limited degree of hydrolysis: Changes in the functional characteristics and protein structure
Ultrason Sonochem. 2024 Mar 11;104:106847. doi: 10.1016/j.ultsonch.2024.106847. Online ahead of print.ABSTRACTHigh-concentration soy protein isolate was subjected to ultrasonication for viscosity reduction to assist the process of limited enzymatic hydrolysis. Ultrasonication (20 kHz, 10 min, 160 W/L) effectively reduced the viscosity of soy protein isolate at a comparatively high concentration of 14 % (w/v) and promoted the limited enzymatic hydrolysis (controlled degree of hydrolysis of 12 %) with a higher peptide yield than that of the conventional method. The correlations between substrate viscosity and peptide yield, ...
Source: Ultrasonics Sonochemistry - March 19, 2024 Category: Chemistry Authors: None Yolandani Haile Ma Dandan Liu Yu Cheng Fredy Agil Raynaldo Mokhtar Dabbour Jiapin Chao Asad Ali Susu Yang Source Type: research
Ultrasound viscous reduction effects on the proteolysis of soy protein isolate at a limited degree of hydrolysis: Changes in the functional characteristics and protein structure
Ultrason Sonochem. 2024 Mar 11;104:106847. doi: 10.1016/j.ultsonch.2024.106847. Online ahead of print.ABSTRACTHigh-concentration soy protein isolate was subjected to ultrasonication for viscosity reduction to assist the process of limited enzymatic hydrolysis. Ultrasonication (20 kHz, 10 min, 160 W/L) effectively reduced the viscosity of soy protein isolate at a comparatively high concentration of 14 % (w/v) and promoted the limited enzymatic hydrolysis (controlled degree of hydrolysis of 12 %) with a higher peptide yield than that of the conventional method. The correlations between substrate viscosity and peptide yield, ...
Source: Ultrasonics Sonochemistry - March 19, 2024 Category: Chemistry Authors: None Yolandani Haile Ma Dandan Liu Yu Cheng Fredy Agil Raynaldo Mokhtar Dabbour Jiapin Chao Asad Ali Susu Yang Source Type: research
Experimental investigation on the characteristics of the shock wave emitted by the cavitation bubble near the air bubble
This study explores the mitigation of cavitation damage in hydraulic engineering through air entrainment. The primary aim is to experimentally analyze the shock wave characteristics emitted by cavitation bubbles adjacent to air bubbles affixed to a tube nozzle. The schlieren optical system is utilized to visualize the shock wave, while a hydrophone measures its pressure. Experiments are conducted on cavitation bubbles induced by the spark-generated method in the vicinity of air bubbles, varying the dimensionless distances and sizes of the air bubbles. The results indicate that (1) The introduction of an air bubble noticeab...
Source: Ultrasonics Sonochemistry - March 16, 2024 Category: Chemistry Authors: Jin Zhu Mindi Zhang Zhenkun Tan Lei Han Biao Huang Source Type: research
Experimental investigation on the characteristics of the shock wave emitted by the cavitation bubble near the air bubble
This study explores the mitigation of cavitation damage in hydraulic engineering through air entrainment. The primary aim is to experimentally analyze the shock wave characteristics emitted by cavitation bubbles adjacent to air bubbles affixed to a tube nozzle. The schlieren optical system is utilized to visualize the shock wave, while a hydrophone measures its pressure. Experiments are conducted on cavitation bubbles induced by the spark-generated method in the vicinity of air bubbles, varying the dimensionless distances and sizes of the air bubbles. The results indicate that (1) The introduction of an air bubble noticeab...
Source: Ultrasonics Sonochemistry - March 16, 2024 Category: Chemistry Authors: Jin Zhu Mindi Zhang Zhenkun Tan Lei Han Biao Huang Source Type: research
Experimental investigation on the characteristics of the shock wave emitted by the cavitation bubble near the air bubble
This study explores the mitigation of cavitation damage in hydraulic engineering through air entrainment. The primary aim is to experimentally analyze the shock wave characteristics emitted by cavitation bubbles adjacent to air bubbles affixed to a tube nozzle. The schlieren optical system is utilized to visualize the shock wave, while a hydrophone measures its pressure. Experiments are conducted on cavitation bubbles induced by the spark-generated method in the vicinity of air bubbles, varying the dimensionless distances and sizes of the air bubbles. The results indicate that (1) The introduction of an air bubble noticeab...
Source: Ultrasonics Sonochemistry - March 16, 2024 Category: Chemistry Authors: Jin Zhu Mindi Zhang Zhenkun Tan Lei Han Biao Huang Source Type: research
Experimental investigation on the characteristics of the shock wave emitted by the cavitation bubble near the air bubble
This study explores the mitigation of cavitation damage in hydraulic engineering through air entrainment. The primary aim is to experimentally analyze the shock wave characteristics emitted by cavitation bubbles adjacent to air bubbles affixed to a tube nozzle. The schlieren optical system is utilized to visualize the shock wave, while a hydrophone measures its pressure. Experiments are conducted on cavitation bubbles induced by the spark-generated method in the vicinity of air bubbles, varying the dimensionless distances and sizes of the air bubbles. The results indicate that (1) The introduction of an air bubble noticeab...
Source: Ultrasonics Sonochemistry - March 16, 2024 Category: Chemistry Authors: Jin Zhu Mindi Zhang Zhenkun Tan Lei Han Biao Huang Source Type: research
The violent collapse of vapor bubbles in cryogenic liquids
Ultrason Sonochem. 2024 Mar 8;104:106845. doi: 10.1016/j.ultsonch.2024.106845. Online ahead of print.ABSTRACTVapor bubbles in cryogenic fluids may collapse violently under subcooled and pressurized conditions. Despite important implications for engineering applications such as cavitation erosion in liquid propellant rocket engines, these intense phenomena are still largely unexplored. In this paper, we systematically investigate the ambient conditions leading to the occurrence of violent collapses in liquid nitrogen and analyze their thermodynamic characteristics. Using Brenner's time ratio χ, the regime of violent collap...
Source: Ultrasonics Sonochemistry - March 15, 2024 Category: Chemistry Authors: Kewen Peng Shouceng Tian Yiqun Zhang Jingbin Li Wanjun Qu Chao Li Source Type: research
