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Lai Y, Zhu Y, Li X, Zhang G, Lian J, Wang S. Ultrasound-induced structural changes in partial nitrification sludge: Unravelling the mechanism for improved nitrogen removal. ENVIRONMENTAL RESEARCH 2024; 261:119637. [PMID: 39032620 DOI: 10.1016/j.envres.2024.119637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 05/11/2024] [Accepted: 07/16/2024] [Indexed: 07/23/2024]
Abstract
Low-intensity ultrasound, as a form of biological enhancement technology, holds significant importance in the field of biological nitrogen removal. This study utilized low-intensity ultrasound (200 W, 6 min) to enhance partial nitrification and investigated its impact on sludge structure, as well as the internal relationship between structure and properties. The results demonstrated that ultrasound induced a higher concentration of nitrite in the effluent (40.16 > 24.48 mg/L), accompanied by a 67.76% increase in the activity of ammonia monooxygenase (AMO) and a 41.12% increase in the activity of hydroxylamine oxidoreductase (HAO), benefiting the partial nitrification. Based on the extended Derjaguin-Landau-Verwey-Overbeek (XDLVO) theoretical analysis, ultrasonic treatment enhanced the electrostatic interaction energy (WR) between sludge flocs, raising the total interaction energy from 46.26 kT to 185.54 kT, thereby causing sludge dispersion. This structural alteration was primarily attributed to the fact that the tightly bonded extracellular polymer (TB-EPS) after ultrasound was found to increase hydrophilicity and negative charge, weakening the adsorption between sludge cells. In summary, this study elucidated that the change in sludge structure caused by ultrasonic treatment has the potential to enhance the nitrogen removal performance by partial nitrification.
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Affiliation(s)
- Yafen Lai
- Jiangxi Key Laboratory of Mining & Metallurgy Environmental Pollution Control, Jiangxi University of Science and Technology, Ganzhou, 341000, China
| | - Yichun Zhu
- Jiangxi Key Laboratory of Mining & Metallurgy Environmental Pollution Control, Jiangxi University of Science and Technology, Ganzhou, 341000, China.
| | - Xiaochao Li
- Jiangxi Provincial Key Laboratory of Water Ecological Conservation at Headwater Regions, Jiangxi University of Science and Technology, Ganzhou, 341000, China
| | - Guangming Zhang
- School of Energy & Environmental Engineering, Hebei University of Technology, Tianjin, 300401, China
| | - Junfeng Lian
- Jiangxi Provincial Key Laboratory of Water Ecological Conservation at Headwater Regions, Jiangxi University of Science and Technology, Ganzhou, 341000, China
| | - Shihao Wang
- Jiangxi Provincial Key Laboratory of Water Ecological Conservation at Headwater Regions, Jiangxi University of Science and Technology, Ganzhou, 341000, China
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2
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Sagar HJ, Lin Y, Moctar OE. Dynamics of a single cavitation bubble near an oscillating boundary. Sci Rep 2024; 14:22031. [PMID: 39322635 PMCID: PMC11424622 DOI: 10.1038/s41598-024-73540-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 09/18/2024] [Indexed: 09/27/2024] Open
Abstract
Cavitation and its effects are well investigated, especially single bubble cavitation and its collapse near rigid and elastic boundaries. In our current article, we investigated novel experiments of a single cavitation bubble near an oscillatory boundary. We generated the cavitation bubble by laser focusing in water. A flat glass plate was fixed to the shaft of the magnetostriction oscillator coil. We investigated the dynamics of bubbles at two relative wall distances (ratio of the distance between the bubble center and plate surface to the maximum radius of the bubble) of the bubble from the glass plate in combination with four modes of oscillation. Each mode has specific frequency and amplitude of oscillation. The high-speed camera captured the dynamics of the bubble using the back-illumination method with a framing rate of 120Kfps and simultaneously we used an optical CMOS sensor to measure the oscillation of the glass plate. We presented a clear comparison among the bubble dynamics near stationary and oscillating plates with parameters such as oscillating modes and direction. We correlated the dynamics of the bubble with the motion of the plate. In addition, we highlighted the differences including the characteristics of bubble shape and jetting that occurred during the collapse phase. The comparison of the time histories of the bubble's equivalent size postulated that the bubble's collapse times vary significantly in some cases compared to the bubble's dynamics near the stationary plate. In all cases, we noticed the shortening of the bubble's collapsing time, i.e. accelerated collapses. In our findings, we noticed a collapse times reduction of about 4-15%. Our finding signifies the importance of introducing the oscillation of the boundaries to obtain effective energy concentration over the time during the collapse. Our study also suggests that forced oscillation of boundaries is undesirable for destructive cavitation effects. The method we suggested for the manipulation of bubble dynamics holds potential for enhancing the efficiency of applications such as lithotripsy in biomedical devices, actuation and micro pumping in microfluidic devices, and effective semiconductor surface cleaning. Not but least, obtained results can be used as benchmark in future for validating numerical methods.
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Affiliation(s)
- Hemant J Sagar
- Institute of Ship Technology, Ocean Engineering and Transport Systems (ISMT), University of Duisburg-Essen, Bismarckstr. 69, 47057, Duisburg, Germany.
- Department of Hydro and Renewable Energy, Indian Institute of Technology (IIT), 247667, Roorkee, India.
| | - Yuxing Lin
- Institute of Ship Technology, Ocean Engineering and Transport Systems (ISMT), University of Duisburg-Essen, Bismarckstr. 69, 47057, Duisburg, Germany
| | - Ould El Moctar
- Institute of Ship Technology, Ocean Engineering and Transport Systems (ISMT), University of Duisburg-Essen, Bismarckstr. 69, 47057, Duisburg, Germany
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3
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Wang P, Chen J, Zhong R, Xia Y, Wu Z, Zhang C, Yao H. Recent advances of ultrasound-responsive nanosystems in tumor immunotherapy. Eur J Pharm Biopharm 2024; 198:114246. [PMID: 38479562 DOI: 10.1016/j.ejpb.2024.114246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 02/20/2024] [Accepted: 03/05/2024] [Indexed: 04/19/2024]
Abstract
Immunotherapy has revolutionized cancer treatment by boosting the immune system and preventing disease escape mechanisms. Despite its potential, challenges like limited response rates and adverse immune effects impede its widespread clinical adoption. Ultrasound (US), known for its safety and effectiveness in tumor diagnosis and therapy, has been shown to significantly enhance immunotherapy when used with nanosystems. High-intensity focused ultrasound (HIFU) can obliterate tumor cells and elicit immune reactions through the creation of immunogenic debris. Low-intensity focused ultrasound (LIFU) bolsters tumor immunosuppression and mitigates metastasis risk by concentrating dendritic cells. Ultrasonic cavitation (UC) produces microbubbles that can transport immune enhancers directly, thus strengthening the immune response and therapeutic impact. Sonodynamic therapy (SDT) merges nanotechnology with immunotherapy, using specialized sonosensitizers to kill cancer cells and stimulate immune responses, increasing treatment success. This review discusses the integration of ultrasound-responsive nanosystems in tumor immunotherapy, exploring future opportunities and current hurdles.
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Affiliation(s)
- Penghui Wang
- Department of Ultrasound Medicine, Rui'an people's Hospital (The Third Affiliated Hospital of Wenzhou Medical University), Rui'an 325200, China
| | - Ji Chen
- Department of Ultrasound Medicine, Rui'an people's Hospital (The Third Affiliated Hospital of Wenzhou Medical University), Rui'an 325200, China
| | - Runming Zhong
- Department of Ultrasound Medicine, Rui'an people's Hospital (The Third Affiliated Hospital of Wenzhou Medical University), Rui'an 325200, China
| | - Yuanyuan Xia
- Center For Peak of Excellence on Biological Science and Food Engineering, National University of Singapore (Suzhou) Research Institute, Suzhou 215004, China
| | - Zhina Wu
- Department of Ultrasound Medicine, Rui'an people's Hospital (The Third Affiliated Hospital of Wenzhou Medical University), Rui'an 325200, China
| | - Chunye Zhang
- Center For Peak of Excellence on Biological Science and Food Engineering, National University of Singapore (Suzhou) Research Institute, Suzhou 215004, China
| | - Hai Yao
- Center For Peak of Excellence on Biological Science and Food Engineering, National University of Singapore (Suzhou) Research Institute, Suzhou 215004, China.
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Kashyap T, Thakur R, Ngo GH, Lee D, Fekete G, Kumar R, Singh T. Silt erosion and cavitation impact on hydraulic turbines performance: An in-depth analysis and preventative strategies. Heliyon 2024; 10:e28998. [PMID: 38644884 PMCID: PMC11033088 DOI: 10.1016/j.heliyon.2024.e28998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 03/26/2024] [Accepted: 03/27/2024] [Indexed: 04/23/2024] Open
Abstract
The primary issues in the Himalayan Rivers are sediment and cavitation degradation of the hydroelectric power turbine components. During the monsoon season, heavy material is transported by streams in hilly areas like the Himalayas through regular rainfalls, glacial and sub-glacial hydrological activity, and other factors. The severe erosion of hydraulic turbines caused by silt abrasion in these areas requires hydropower facilities to be regularly shut down for maintenance, affecting the plant's overall efficiency. This article provides an in-depth examination of the challenges that can lead to cavitation, silt erosion, and a decrease in the efficiency of various hydroelectric turbines, and it demands attention on the design, manufacture, operation, and maintenance of the turbines. This study's main objective is to critically evaluate earlier theoretical, experimental, and numerical evaluation-based studies (on cavitation and silt erosion) that are provided and addressed throughout the study. As a part of this study, various strategies for mitigating the effects of these problems and elongating the time that turbine may be utilized before they must be replaced have been provided.
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Affiliation(s)
- Tanish Kashyap
- Department of Mechanical Engineering, Shoolini University, Solan, 173229, India
| | - Robin Thakur
- Department of Mechanical Engineering, Shoolini University, Solan, 173229, India
| | - Gia Huy Ngo
- Department of Mechanical Engineering, Gachon University, Seongnam, 13120, South Korea
| | - Daeho Lee
- Department of Mechanical Engineering, Gachon University, Seongnam, 13120, South Korea
| | - Gusztáv Fekete
- Vehicle Industry Research Center, Széchenyi István University, H-9026, Győr, Hungary
| | - Raj Kumar
- Department of Mechanical Engineering, Gachon University, Seongnam, 13120, South Korea
| | - Tej Singh
- Savaria Institute of Technology, Faculty of Informatics, ELTE Eötvös Loránd University, Budapest, 1117, Hungary
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Garcia-Vargas I, Louisnard O, Barthe L. Extensive investigation of geometric effects in sonoreactors: Analysis by luminol mapping and comparison with numerical predictions. ULTRASONICS SONOCHEMISTRY 2023; 99:106542. [PMID: 37572427 PMCID: PMC10448224 DOI: 10.1016/j.ultsonch.2023.106542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 07/25/2023] [Accepted: 07/28/2023] [Indexed: 08/14/2023]
Abstract
This investigation focuses on the influence of geometric factors on cavitational activity within a 20kHz sonoreactor containing water. Three vessels with different shapes were used, and the transducer immersion depth and liquid height were varied, resulting in a total of 126 experiments conducted under constant driving current. For each one, the dissipated power was quantified using calorimetry, while luminol mapping was employed to identify the shape and location of cavitation zones. The raw images of blueish light emission were transformed into false colors and corrected to compensate for refraction by the water-glass and glass-air interfaces. Additionally, all configurations were simulated using a sonoreactor model that incorporates a nonlinear propagation of acoustic waves in cavitating liquids. A systematic visual comparison between luminol maps and color-plots displaying the computed bubble collapse temperature in bubbly regions was conducted. The calorimetric power exhibited a nearly constant yield of approximately 70% across all experiments, thus validating the transducer command strategy. However, the numerical predictions consistently overestimated the electrical and calorimetric powers by a factor of roughly 2, indicating an overestimation of dissipation in the cavitating liquid model. Geometric variations revealed non-monotonic relationships between transducer immersion depth and dissipated power, emphasizing the importance of geometric effects in sonoreactor. Complex features were revealed by luminol maps, exhibiting appearance, disappearance, and merging of different luminol zones. In certain parametric regions, the luminol bright regions are reminiscent of linear eigenmodes of the water/vessel system. In the complementary parametric space, these structures either combine with, or are obliterated by typical elongated axial structures. The latter were found to coincide with an increased calorimetric power, and are conjectured to result from a strong cavitation field beneath the transducer producing acoustic streaming. Similar methods were applied to an additional set of 57 experiments conducted under constant geometry but with varying current, and suggested that the transition to elongated structures occurs above some amplitude threshold. While the model partially reproduced some experimental observations, further refinement is required to accurately account for the intricate acoustic phenomena involved.
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Affiliation(s)
- Igor Garcia-Vargas
- Centre RAPSODEE, IMT Mines-Albi, UMR CNRS 5302, Université de Toulouse, 81013 Albi CT, France; Laboratoire de Genie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France; SinapTec, 7, Avenue Pierre et Marie Curie, 59260, Lezennes, France
| | - Olivier Louisnard
- Centre RAPSODEE, IMT Mines-Albi, UMR CNRS 5302, Université de Toulouse, 81013 Albi CT, France.
| | - Laurie Barthe
- Laboratoire de Genie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
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Sun J, Ge X, Zhou Y, Liu D, Liu J, Li G, Zheng Y. Research on synergistic erosion by cavitation and sediment: A review. ULTRASONICS SONOCHEMISTRY 2023; 95:106399. [PMID: 37060709 PMCID: PMC10139983 DOI: 10.1016/j.ultsonch.2023.106399] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 03/21/2023] [Accepted: 04/03/2023] [Indexed: 06/19/2023]
Abstract
Sediment erosion frequently occurs in areas with high incidences of cavitation. The collaborative impact of abrasion and cavitation presents a host of challenges, threats, and damages to hydraulic engineering. However, little is known about the synergistic wear mechanism, and research conclusions remain inconsistent. In this work, relevant studies on synergistic erosion have been collected, classified, and analyzed. Presently, research on synergistic wear primarily operates at the macro and micro levels. The microscopic level enables the visualization and quantification of the process by which particles gain momentum from bubbles, the trajectory of particle acceleration, and the mechanism that triggers strong interactions between bubble-particle. At the macro level, erosion is understood as the summation of damage effects on the wall that is caused by the interaction between a plethora of bubbles of varying scales and numerous particles. The synergistic bubble-particle effect is reflected in the dual inhibiting or promoting mechanism. Furthermore, while numerical simulations could be realized by coupling cavitation, multiphase flow, and erosion models, their accuracy is not infallible. In the future, the dual role of particles, and particles driven by micro-jets or shock waves should be fully considered when establishing a combined erosion model. In addition, enhancing the influence of flow field and boundary parameters around bubbles and utilizing FSI would improve the predictive accuracy of erosion location and erosion rate. This work helps to elucidate the combined wear mechanism of hydraulic machinery components in sediment-laden flow environments and provides a theoretical basis for the design, manufacture, processing, and maintenance of hydraulic machinery.
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Affiliation(s)
- Jie Sun
- Hohai University, Nanjing 210098, China
| | - Xinfeng Ge
- Hohai University, Nanjing 210098, China.
| | - Ye Zhou
- Institute for Hydraulic Machinery, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
| | - Demin Liu
- Dongfang Electric Machinery, Deyang 618000, China
| | - Juan Liu
- Institute for Hydraulic Machinery, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
| | - Gaiye Li
- Hohai University, Nanjing 210098, China
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7
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Li C, Ma Y, Zhi X, Peng G. Optimization of ultrasonic assisted membrane strategy for saponins from Gynostemma Pentaphyllum with response surface methodology. Food Sci Biotechnol 2023; 32:319-328. [PMID: 36778093 PMCID: PMC9905334 DOI: 10.1007/s10068-022-01196-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 10/13/2022] [Accepted: 10/24/2022] [Indexed: 11/09/2022] Open
Abstract
Gynostemma pentaphyllum saponin has a variety of biological properties. Classic separation methods of saponin, such as resin absorption and preparative chromatography are limited by environmental pollution and high cost. In the study, ultrasonic assisted membrane separation was firstly used to purify saponin from Gynostemma pentaphyllum. Total proteins, polysaccharides, saponin, gypenoside A and rutin were selected as indexes to optimize the pretreatment and purification parameters by response surface methodology. The fitted models were significant (p < 0.05) and the optimal conditions were: (1) removing protein and polysaccharides by MWCO 10,000 Da, ultrasonic power 400 W and pH 7.8; (2) separation flavonoids from saponin by MWCO 1000 Da, ultrasonic power 300 W and pH 7.9. The difficulty in separating saponin from flavonoids was solved by releasing flavonoids from micelles with ultrasonic assisted membrane method. The saponin content in Gynostemma pentaphyllum extracts reached 82.81%, which was more than four times of that obtained with resin adsorption method. The protective effect of saponins on SH-SY5Y cells injury induced by H2O2 was better than that of Gynostemma pentaphyllum extracts. The study suggested that ultrasonic assisted membrane method would be widely applied in the preparation of food materials.
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Affiliation(s)
- Cunyu Li
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023 People’s Republic of China
- Jiangsu Collaborative Innovation Centers of Chinese Medicinal Resources Industrialization, Nanjing, 210023 People’s Republic of China
- Jiangsu Engineering Research Centers of Classical Prescription, Nanjing, 210023 People’s Republic of China
| | - Yun Ma
- The Fourth People’s Hospital of Taizhou City, Taizhou, 225300 People’s Republic of China
| | - Xinglei Zhi
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023 People’s Republic of China
- Jiangsu Collaborative Innovation Centers of Chinese Medicinal Resources Industrialization, Nanjing, 210023 People’s Republic of China
| | - Guoping Peng
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023 People’s Republic of China
- Jiangsu Collaborative Innovation Centers of Chinese Medicinal Resources Industrialization, Nanjing, 210023 People’s Republic of China
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8
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Milde R, Moucka R, Sedlacik M, Pata V. Iron-Sepiolite High-Performance Magnetorheological Polishing Fluid with Reduced Sedimentation. Int J Mol Sci 2022; 23:ijms232012187. [PMID: 36293044 PMCID: PMC9603551 DOI: 10.3390/ijms232012187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 10/07/2022] [Accepted: 10/10/2022] [Indexed: 11/18/2022] Open
Abstract
A sedimentation-stable magnetorheological (MR) polishing slurry on the basis of ferrofluid, iron particles, Al2O3, and clay nanofiller in the form of sepiolite intended for MR polishing has been designed, prepared, and its polishing efficiency verified. Added clay substantially improved sedimentation stability of the slurry, decreasing its sedimentation rate to a quarter of its original value (1.8 to 0.45 mg s−1) while otherwise maintaining its good abrasive properties. The magnetisation curve measurement proved that designed slurry is soft magnetic material with no hysteresis, and its further suitability for MR polishing was confirmed by its magnetorheology namely in the quadratically increased yield stress due to the effect of applied magnetic field (0 to 600 kA m−1). The efficiency of the MR polishing process was tested on the flat samples of injection-moulded polyamide and verified by surface roughness/3D texture measurement. The resulting new composition of the MR polishing slurry exhibits a long-term stable system with a wide application window in the MR polishing process.
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Affiliation(s)
- Radoslav Milde
- Department of Production Engineering, Faculty of Technology, Tomas Bata University in Zlín, Vavreckova 275, 760 01 Zlin, Czech Republic
| | - Robert Moucka
- Polymer Centre, Faculty of Technology, Tomas Bata University in Zlín, Vavreckova 275, 760 01 Zlin, Czech Republic
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Trida T. Bati 5678, 760 01 Zlin, Czech Republic
| | - Michal Sedlacik
- Department of Production Engineering, Faculty of Technology, Tomas Bata University in Zlín, Vavreckova 275, 760 01 Zlin, Czech Republic
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Trida T. Bati 5678, 760 01 Zlin, Czech Republic
- Correspondence:
| | - Vladimir Pata
- Department of Production Engineering, Faculty of Technology, Tomas Bata University in Zlín, Vavreckova 275, 760 01 Zlin, Czech Republic
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Li N, Dong L, Shen Y, Wang Y, Chang L, Wu H, Chang Y, Li M, Li D, Li Z, He M, Li C, Wei Y, Xie H, Wang F. Therapeutic Effect of Ultrasound Combined With Porous Lipid Clioquinol/PLGA Microbubbles on Ferroptosis in HL-1 Cardiac Cell Induced by Isoproterenol Attack. Front Pharmacol 2022; 13:918292. [PMID: 35935822 PMCID: PMC9354950 DOI: 10.3389/fphar.2022.918292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 06/01/2022] [Indexed: 11/13/2022] Open
Abstract
In recent years, studies have shown a close relationship between cardiomyocyte death and ferroptosis. Clioquinol (CQ) can inhibit ferroptosis. Porous lipid-poly (lactic-co-glycolic acid) (PLGA) microbubbles (MBs) were prepared by double emulsification (W1/O/W2) using 1,2-dioctadecanoyl-sn-glycero-3-phophocholine and PLGA as raw materials. Porous lipid-PLGA MBs were used as carriers to prepare CQ/PLGA MBs containing CQ. CQ/PLGA had the advantages of high drug loading, good biocompatibility, and sustained release. Our results showed that CQ/PLGA improved the effect of CQ and reduced its cytotoxicity. Under low-frequency ultrasound with certain parameters, CQ/PLGA showed steady-state cavitation, which increased the membrane permeability of mouse cardiomyocyte HL-1 to a certain extent and further prevented the process of ferroptosis in mouse cardiomyocyte HL-1.
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Affiliation(s)
- Nana Li
- Henan Key Laboratory of Medical Tissue Regeneration, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Lei Dong
- Henan Key Laboratory of Medical Tissue Regeneration, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Yuanyuan Shen
- National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, China
- *Correspondence: Haiqin Xie, ; Yuanyuan Shen, ; Feng Wang,
| | - Yongling Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Liansheng Chang
- Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Hongwei Wu
- Department of Chemistry, Xinxiang Medical University, Xinxiang, China
| | - Yuqiao Chang
- Henan Key Laboratory of Medical Tissue Regeneration, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Menghao Li
- Henan Key Laboratory of Medical Tissue Regeneration, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Dan Li
- Henan Key Laboratory of Medical Tissue Regeneration, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Zhaoyi Li
- Henan Key Laboratory of Medical Tissue Regeneration, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Mei He
- Henan Key Laboratory of Medical Tissue Regeneration, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Cheng Li
- Henan Key Laboratory of Medical Tissue Regeneration, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Yao Wei
- Henan Key Laboratory of Medical Tissue Regeneration, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Haiqin Xie
- Department of Ultrasound, Peking University Shenzhen Hospital, Shenzhen, China
- *Correspondence: Haiqin Xie, ; Yuanyuan Shen, ; Feng Wang,
| | - Feng Wang
- Henan Key Laboratory of Medical Tissue Regeneration, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
- *Correspondence: Haiqin Xie, ; Yuanyuan Shen, ; Feng Wang,
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10
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Wang T, Le T, Hu J, Ravindra AV, Xv H, Zhang L, Wang S, Yin S. Ultrasonic-assisted ozone degradation of organic pollutants in industrial sulfuric acid. ULTRASONICS SONOCHEMISTRY 2022; 86:106043. [PMID: 35598512 PMCID: PMC9127698 DOI: 10.1016/j.ultsonch.2022.106043] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 05/03/2022] [Accepted: 05/15/2022] [Indexed: 05/25/2023]
Abstract
In this work, a combination of ozone (O3) and ultrasound (US) has been firstly used to decolorize black concentrated sulfuric acid with high organic content. The effect of different reaction factors on the transparency, extent of decolorization, H2SO4 mass fraction, and organic pollutants removal is studied. In addition, the systematic interaction between ultrasound and ozone on the decolorization process is reviewed through comparative experiments of O3, US and US/O3. A sulfuric acid product that meets the requirements for first-class products in national standards, with an extent of decolorization of 74.07%, transparency of 70 mm, and a mass fraction of 98.04%, is obtained under the optimized conditions. Under the same conditions, it has been established that the treatment time can be saved by 25% using the US/O3 process compared to using O3. Further, the production of oxidative free radicals (•OH) in a concentrated sulfuric acid system is enhanced using the US/O3 process compared with O3. In addition, the degree of effectiveness of different oxidizing components on the decolorization process is revealed by adding different free radical shielding agents when the US/O3 process is used.
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Affiliation(s)
- Tian Wang
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, Yunnan, China; Key Laboratory of Unconventional Metallurgy, Kunming University of Science and Technology, Kunming 650093, Yunnan, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China
| | - Thiquynhxuan Le
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, Yunnan, China; Key Laboratory of Unconventional Metallurgy, Kunming University of Science and Technology, Kunming 650093, Yunnan, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China.
| | - Jue Hu
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, Yunnan, China; Key Laboratory of Unconventional Metallurgy, Kunming University of Science and Technology, Kunming 650093, Yunnan, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China
| | - Annavarapu V Ravindra
- Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Tamilnadu 603203, India
| | - Haoran Xv
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, Yunnan, China; Key Laboratory of Unconventional Metallurgy, Kunming University of Science and Technology, Kunming 650093, Yunnan, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China
| | - Libo Zhang
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, Yunnan, China; Key Laboratory of Unconventional Metallurgy, Kunming University of Science and Technology, Kunming 650093, Yunnan, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China.
| | - Shixing Wang
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, Yunnan, China; Key Laboratory of Unconventional Metallurgy, Kunming University of Science and Technology, Kunming 650093, Yunnan, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China
| | - Shaohua Yin
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, Yunnan, China; Key Laboratory of Unconventional Metallurgy, Kunming University of Science and Technology, Kunming 650093, Yunnan, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China
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Recovery of Lithium Iron Phosphate by Specific Ultrasonic Cavitation Parameters. SUSTAINABILITY 2022. [DOI: 10.3390/su14063390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
With the widespread use of lithium iron phosphate batteries in various industries, the amount of waste lithium iron phosphate batteries is also increasing year by year, and if not disposed of in a timely manner, will pollute the environment and waste a lot of metal resources. In the composition of lithium iron phosphate batteries, the cathode has an abundance of elements. The ultrasonic method is a crucial method to recover waste LiFePO4 batteries. It has the following disadvantages, such as the lack of empirical parameters and suitable research equipment. In order to overcome the inefficiency of the LiFePO4 recycling method, the airborne bubble dynamical mechanism of ultrasound in the removal of lithium phosphate cathode material was studied by a high-speed photographic observation and Fluent simulation and the disengagement process. Mainly aimed at the parameters such as action time, power, frequency, and action position in the detachment process were optimized. The recovery efficiency of lithium iron phosphate reached 77.7%, and the recovered lithium iron phosphate powder has good electrochemical properties, with the first charge–discharge ratio of up to 145 (mAh)/g. It is shown that the new disengagement process established in this study was adopted for the recovery of waste LiFePO4.
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