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Dissertations / Theses on the topic 'Sonochemichal'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Sydorchuk, V., S. Khalameida, J. Skubiszewska-Zięba, et al. "Synthesis and Photocatalytic Properties of Silver Niobate." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35270.

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The interaction between silver nitrate and niobium pentoxide has been studied under conventional thermal treatment (TT) as well as mechanochemical and sonochemical treatment (MChT and UST, respec-tively). The products of reaction have been investigated using XRD, DTA-TG, Raman spectroscopy, adsorp-tion of nitrogen. MChT and UST promote lowering the temperature of silver niobate (SN) formation. The formed SN possesses higher specific surface area and photocatalytic activity. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35270

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2

Khalameida, S., V. Sydorchuk, J. Skubiszewska-Zieba, R. Leboda, and V. Zazhigalov. "Mechanochemical, Sonochemical and Hydrothermal Activation of Niobium Pentoxide and its Catalytic Properties." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35157.

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Modification of niobium pentoxide with different dispersity via mechanochemical, ultrasound, hydrothermal and microwave treatments (MChT, UST, HTT, and MWT, respectively) has been studied. All types of treatment do not change of phase composition but leads to improvement (at HTT and MWT) or, on contrary, breaking of crystal structure (at MChT and UST) and variation of crystallite size and specific surface area. UV-Vis measurements display increase of absorption in visible region. As a result, modified samples show higher photocatalytic activity at degradation of rhodamine B under visible

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3

Supeno. "Sonochemical fixation of nitrogen." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0016/MQ57783.pdf.

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4

Supeno, Carleton University Dissertation Chemistry. "Sonochemical fixation of nitrogen." Ottawa, 2000.

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5

Duriyabunleng, Hathaichanok. "Design of a sonochemical reactor." Thesis, Imperial College London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309169.

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6

Koblov, Alexander. "Sonochemical reduction of carbon dioxide." Thesis, Curtin University, 2011. http://hdl.handle.net/20.500.11937/2169.

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Emissions from the combustion of fossil fuels and cement production are responsible for approximately 75% of the increase of carbon dioxide (CO2) concentration in the atmosphere. 80% of the generated world energy is produced by burning fossil fuels (IPCC 2007) and such tendency is likely to remain unchanged in the nearest future. These number look more intimidating if consider the fact that in 2030, global energy demand was estimated to increase by 57% in comparison to 2004 (from 14.9 terrawatts (TW) in 2004 to 23.4 TW in 2030; International Energy Outlook 2007). Moreover, only 45% of CO2, rel

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7

Drees, Clayton William. "Sonochemical degradation of Perfluorooctane Sulfonate (PFOS)." The Ohio State University, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=osu1413292793.

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8

Gong, Cuiling 1964. "Ultrasound induced cavitation and sonochemical effects." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/9443.

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Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1999.<br>Includes bibliographical references (p. 132-137).<br>The introduction of a strong acoustic field to an aqueous solution results in the generation of cavitation microbubbles. The non-linear motion of these microbubbles focuses energy from the macro-scale acoustic waves to the micro-scale vapor inside the bubbles. As a result, extremely high localized pressures on the order of hundreds of atmospheres and temperatures on the order of thousands of degrees Kelvin are generated. Under such extreme condit

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9

He, Ziqi. "Sonochemical remediation of Mercury from contaminated sediments." The Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=osu1155666284.

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10

Entezari, Mohammad H. (Mohammad Hassan) Carleton University Dissertation Chemistry. "The effect of frequency on sonochemical reactions." Ottawa, 1994.

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11

Xiao, Ruiyang. "Sonochemical Degradation of Pharmaceuticals and Personal Care Products." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1338345410.

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12

Clifton, Andrew. "Sonochemical modification of polyethylene and poly(vinyl chloride) surfaces." Thesis, University of Bath, 1993. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.760647.

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13

Skinner, Emily K. "Sonochemical production of hollow polymer microspheres for responsive delivery." Thesis, University of Bath, 2013. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.577749.

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Ultrasound irradiation of a protein or polymer solution at the air:water interface can be used to form hollow microspheres containing an air bubble. By introducing a layer of oil and sonicating the oil:water interface, microspheres containing an oil droplet are formed. The microspheres are stabilised by disulfide crosslinking, have diameters of between 1-20 mm and have a number of applications; gas filled protein microspheres are used as ultrasound contrast agents and oil filled microspheres are being developed for delivery of lipophilic drugs. This project extends the scope of sonochemically

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14

King, David. "Sonochemical analysis of the output of ultrasonic dental descalers." Thesis, University of Bath, 2010. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.538276.

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Ultrasonic descalers are used in dentistry to remove calculus and other contaminants from teeth. One mechanism which may assist in the cleaning is cavitation generated in cooling water around the descaler. The spatial distribution of cavitation around three designs of descaler tips and under three load conditions has been observed using sonochemiluminescence from a luminol solution and compared with the vibratory motion of the tips in a water bath, characterised by scanning laser vibrometry. The type of cavitation was confirmed by acoustic emission analysed by a ‘Cavimeter’ supplied by NPL. Su

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15

Tiong, Timm Joyce. "Sonochemical and ultrasonic output analyses on dental endosonic instruments." Thesis, University of Bath, 2012. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.558866.

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Ultrasonic instruments are used with the aid of an irrigant such as NaOCl in endodontic treatments to remove dentin debris and calculus from infected root canals. This cleaning process may be assisted by various factors, such as acoustic streaming, and the production of radicals and microjets from the collapse of transient cavitation bubbles. The aim of this project is to understand the principal factors affecting the performance of a number of different endosonic files in order to correlate to their cleaning efficiencies. Characterisation includes detecting transient cavitation activity, mapp

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16

Dean, Drew W. Kane Robert R. "Meniscal tissue bonding and exploration of sonochemical tissue modification." Waco, Tex. : Baylor University, 2008. http://hdl.handle.net/2104/5291.

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17

Gray, Kevin M. "Sonochemical Defluorination of Perfluorinated Compounds by Activated Persulfate Ions." Digital WPI, 2018. https://digitalcommons.wpi.edu/etd-theses/1265.

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Polyfluorinated compounds (PFCs) are a class of anthropogenic chemicals that have been found in groundwater and wastewater around the world. Perfluoroctane sulfonate (PFOS) and perfluoroctanoic acid (PFOA) are primarily used for industrial surfactants, and aqueous film forming foams (AFFFs). These PFCs and many of their constituents have been found to be carcinogenic to humans and other animals. A simple method for defluorination of these compounds is needed. Advanced oxidation of PFOS, PFHxS, and PFBS-k was carried out using activated sodium persulfate through ultrasonic irradiation with the

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18

McNamara, Nicholas D. "Sonochemical Synthesis and Characterization of Metal Nanoparticle-Decorated Carbon Supports." University of Dayton / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1311690542.

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19

Pee, Gim-Yang. "Sonochemical Remediation Of Freshwater Sediments Contaminated With Polycyclic Aromatic Hydrocarbons." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1204595333.

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20

Vabbina, Phani Kiran. "Sonochemical Synthesis of Zinc Oxide Nanostructures for Sensing and Energy Harvesting." FIU Digital Commons, 2016. http://digitalcommons.fiu.edu/etd/2534.

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Semiconductor nanostructures have attracted considerable research interest due to their unique physical and chemical properties at nanoscale which open new frontiers for applications in electronics and sensing. Zinc oxide nanostructures with a wide range of applications, especially in optoelectronic devices and bio sensing, have been the focus of research over the past few decades. However ZnO nanostructures have failed to penetrate the market as they were expected to, a few years ago. The two main reasons widely recognized as bottleneck for ZnO nanostructures are (1) Synthesis technique which

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21

林正乾 and Ching-kin Lam. "Oxidation reaction of unsaturated long chain fatty esters: a sonochemical approach." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1995. http://hub.hku.hk/bib/B31212384.

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22

Lam, Ching-kin. "Oxidation reaction of unsaturated long chain fatty esters : a sonochemical approach /." [Hong Kong] : University of Hong Kong, 1995. http://sunzi.lib.hku.hk/hkuto/record.jsp?B14777460.

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23

VandenBurg, Daniel Martin. "The sonochemical remediation of phthalate esters : an investigation into products and kinetics." Thesis, University of Bath, 2012. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.558851.

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Phthalate esters or phthalates have become ubiquitous water pollutants. They are used as plasticisers in several plastics. Due to them not being bound to the plastic material they leach out over time. Thus phthalate esters have entered the planet’s aquasphere. Phthalates are stable in the environment and also recalcitrant to most standard water processing methods. Due to their being linked to endocrine disruption and cancer they have been classed as a pollutant of concern by the EU and the American EPA. Previous work had shown that ultrasound of frequency between 20 kHz and 500 kHz can be used

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24

Beyers, Analene. "Process optimization for partial oxidation of bacterial sludge in a sonochemical reactor." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86289.

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Thesis (MEng)--Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: It was found that bacterial sludge from anaerobic water treatment systems is produced internationally at a rate of 60 grams per person per day and the accumulation of the potentially hazardous by-product has become of increasing concern. The produced bacterial sludge is frequently pumped into dams, dried out and used as agricultural fertilizer. This bacterial sludge is expected to have a relatively high heating value and as such, has the potential to produce energy from the biomass. It is, therefore, advisable to utilize this e

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25

Balachandran, Rajesh. "Understanding the Role of Sonochemical and Sono-electrochemical Parameters in Semiconductor Cleaning." Diss., The University of Arizona, 2015. http://hdl.handle.net/10150/560617.

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Over the years, megasonic energy has been widely used in the semiconductor industry for effective particle removal from surfaces after chemical mechanical planarization (CMP) processes. As a sound wave propagates through a liquid medium, it generates two effects, namely, acoustic streaming and acoustic cavitation. Acoustic streaming refers to time independent motion of liquid due to viscous attenuation, while cavitation arises from the bubble activity generated due to the difference in the pressure field of the propagating wave. Cavitation can be classified into two categories, (1) stable and

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26

Dogan, Hakan. "Modelling of acoustic pressure waves in bubbly liquids with application to sonochemical reactors." Thesis, Wessex Institute of Technology, 2013. https://eprints.soton.ac.uk/376891/.

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This thesis investigates the acoustic wave propagation in bubbly liquids as part of the SONO project supported by the FP7 European Commission programme, which is aimed at developing a pilot sonochemical plant in order to produce antibacterial medical textile fabrics by coating of the textile with ZnO or CuO nanoparticles. The findings of this research are anticipated to aid the design procedures and also to provide better understanding of the micro scale physical and chemical events. Propagation of acoustic pressure waves in a bubbly liquid is modelled by using Helmholtz equation in this thesi

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27

Arruda, Larisa Baldo de [UNESP]. "Materiais óxidos magnéticos nanoestruturados." Universidade Estadual Paulista (UNESP), 2011. http://hdl.handle.net/11449/99696.

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Made available in DSpace on 2014-06-11T19:30:19Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-05-05Bitstream added on 2014-06-13T18:40:20Z : No. of bitstreams: 1 arruda_lb_me_bauru.pdf: 4132261 bytes, checksum: ec76a96792be6b1907a354c279109181 (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>Há cerca de 20 anos foi descoberto o efeito magnetoresitivo em multicamadas magnéticas. Desde então, a spintrônica evoluiu de um fenômeno científico complexo para tornar-se uma tecnologia multibilionária. Dentre os parâmetros necessários para o desenvolvimento da spint

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28

Brundavanam, Ravi. "Sonochemical synthesis, characterisation and biological evaluation of nano hydroxyapatite for potential hard tissue engineering applications." Thesis, Brundavanam, Ravi (2013) Sonochemical synthesis, characterisation and biological evaluation of nano hydroxyapatite for potential hard tissue engineering applications. PhD thesis, Murdoch University, 2013. https://researchrepository.murdoch.edu.au/id/eprint/29172/.

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Today, there is a great demand for advanced biosynthetic bone like materials for the development of biomedical devices and implants for use in a number of tissue engineering applications. During the first part of this thesis research project, the development of a new chemical route using calcium nitrate [Ca (NO3)2 .4H2O] and potassium dihydrogen phosphate [KH2PO4] as the main reactants was initiated. The synthesis process was carried out under the influence of low powered ultrasound irradiation, while the Ca:P ratio was maintained at 1.67 and the pH was maintained at 9. The resultant white pre

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29

Venkatesan, K. "Novel organic transformations for the thermal/sonochemical synthesis of important intermediates and biologically active molecules." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2008. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/2646.

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30

Zheng, Weixi. "Mechanistic study of pollutant degradation." ScholarWorks@UNO, 2004. http://louisdl.louislibraries.org/u?/NOD,190.

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Thesis (Ph. D.)--University of New Orleans, 2004.<br>Title from electronic submission form. "A dissertation ... in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the Department of Chemistry."--Dissertation t.p. Vita. Includes bibliographical references.

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31

Silva, Ana Carolina da. "Materiais híbridos de biovidros e raloxifeno para reparo alveolar." Universidade Estadual Paulista (UNESP), 2018. http://hdl.handle.net/11449/154429.

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Submitted by Ana Carolina da Silva (aninha_010@hotmail.com) on 2018-07-03T00:00:59Z No. of bitstreams: 1 Dissertação_AnaCarolinaSilva.pdf: 2472051 bytes, checksum: 6b85b8c0d79a2746f5c893ab3a192b5e (MD5)<br>Approved for entry into archive by Lucilene Cordeiro da Silva Messias null (lubiblio@bauru.unesp.br) on 2018-07-03T12:37:12Z (GMT) No. of bitstreams: 1 silva_ac_me_bauru.pdf: 2472051 bytes, checksum: 6b85b8c0d79a2746f5c893ab3a192b5e (MD5)<br>Made available in DSpace on 2018-07-03T12:37:12Z (GMT). No. of bitstreams: 1 silva_ac_me_bauru.pdf: 2472051 bytes, checksum: 6b85b8c0d79a2746f5c893a

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Mesquita, Paulo Roberto Ribeiro de. "Síntese via rota sonoquímica e caracterização de nanopartículas de sulfeto de bismuto." reponame:Repositório Institucional da UFBA, 2013. http://www.repositorio.ufba.br/ri/handle/ri/13088.

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55 f.<br>Submitted by Ana Hilda Fonseca (anahilda@ufba.br) on 2013-10-02T13:52:06Z No. of bitstreams: 1 Dissertação_Impressão FINAL.pdf: 23959288 bytes, checksum: 4ba5e564089149b8fafe9a4c74558367 (MD5)<br>Approved for entry into archive by Ana Hilda Fonseca(anahilda@ufba.br) on 2013-10-02T14:12:03Z (GMT) No. of bitstreams: 1 Dissertação_Impressão FINAL.pdf: 23959288 bytes, checksum: 4ba5e564089149b8fafe9a4c74558367 (MD5)<br>Made available in DSpace on 2013-10-02T14:12:03Z (GMT). No. of bitstreams: 1 Dissertação_Impressão FINAL.pdf: 23959288 bytes, checksum: 4ba5e564089149b8fafe9a4c74558367 (MD

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Arruda, Larisa Baldo de. "Materiais óxidos magnéticos nanoestruturados /." Bauru : [s.n.], 2011. http://hdl.handle.net/11449/99696.

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Orientador: Paulo Noronha Lisboa Filho<br>Banca: Paulo Sergio Pizani<br>Banca: Americo Sheitiro Tabata<br>O programa de Pós graduação em Ciência e Tecnologia de Materiais, POSMAT, tem carater institucional e integra as atividades de pesquisa em materiais de diversos campi da UNESP<br>Resumo: Há cerca de 20 anos foi descoberto o efeito magnetoresitivo em multicamadas magnéticas. Desde então, a spintrônica evoluiu de um fenômeno científico complexo para tornar-se uma tecnologia multibilionária. Dentre os parâmetros necessários para o desenvolvimento da spintrônica - a nova eletrônica que se base

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34

Cádiz, Bedini Andrew Paolo [Verfasser], Uwe [Akademischer Betreuer] Rau, and Bernhard [Akademischer Betreuer] Hidding. "Sonochemical synthesis of silicon hydride polymers and silicon nanoparticles from liquid silanes / Andrew Paolo Cádiz Bedini ; Uwe Rau, Bernhard Hidding." Aachen : Universitätsbibliothek der RWTH Aachen, 2017. http://d-nb.info/1186069163/34.

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35

Cádiz, Bedini Andrew Paolo Verfasser], Uwe [Akademischer Betreuer] [Rau, and Bernhard [Akademischer Betreuer] Hidding. "Sonochemical synthesis of silicon hydride polymers and silicon nanoparticles from liquid silanes / Andrew Paolo Cádiz Bedini ; Uwe Rau, Bernhard Hidding." Aachen : Universitätsbibliothek der RWTH Aachen, 2017. http://d-nb.info/1186069163/34.

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36

Al, Ammar Tarek Ahmed [Verfasser], Anja-Verena [Gutachter] Mudring, and Anjana [Gutachter] Devi. "Sonochemical synthesis and characterization of metal oxides nanoparticles in ionic liquids / Tarek Ahmed Al Ammar ; Gutachter: Anja-Verena Mudring, Anjana Devi." Bochum : Ruhr-Universität Bochum, 2012. http://d-nb.info/1131354524/34.

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37

Baldo, Hurtado Bianca. "Compuestos metal-orgánicos con propiedades multifuncionales." Thesis, Rennes 1, 2018. http://www.theses.fr/2018REN1S012/document.

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Le fait qu'un composé métal-organique contienne à la fois une partie organique et une partie inorganique, rend ces systèmes hautement modulables, de la dimensionnalité de leur structure aux propriétés obtenues. Ainsi, la chimie de coordination a été axée sur la synthèse de nouveaux matériaux à base de cations 3d et 4f, liés par des ligands organiques avec des groupes fonctionnels de nature chimique différente, ce qui permet de trouver à ces matériaux intéressants des propriétés telles que la luminescence, l'optique non linéaire et le magnétisme. En outre, la synthèse de composés métal-organiqu

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38

Lisco, Fabiana. "High rate deposition processes for thin film CdTe solar cells." Thesis, Loughborough University, 2015. https://dspace.lboro.ac.uk/2134/17965.

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This thesis describes the development of a fast rate method for the deposition of high quality CdS and CdTe thin films. The technique uses Pulsed DC Magnetron Sputtering (PDCMS). Surprisingly, the technique produces highly stable process conditions. CREST is the first laboratory worldwide to show that pulsed DC power may be used to deposit CdS and CdTe thin films. This is a very promising process technology with potential for eventual industrial deployment. The major advantage is that the process produces high deposition rates suitable for use in solar module manufacturing. These rates are ove

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39

Al-Hussaini, Louay. "Utilisation de moyens d’activation non-conventionnels pour le clivage oxydant de la lignine par le dioxygène." Electronic Thesis or Diss., Sorbonne université, 2019. http://www.theses.fr/2019SORUS448.

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Du fait de l'épuisement des ressources fossiles, l'intérêt de la lignine en tant qu'alternative durable est grandissant. Ainsi, le but principal de cette thèse était de mettre au point un procédé de clivage oxydant de la lignine par le dioxygène qui implique des voies non conventionnelles (sonochimie, ball-milling). Les catalyseurs utilisés sont des molybdovanadophosphates de KEGGIN. D'abord, nous avons optimisé les conditions opératoires (solvant, charge catalytique et taux de vanadium) pour le clivage, à pression atmosphérique de deux modèles, i. e. 2-phénoxyacétophénone (K1HH) et le 2-phéno

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40

Зінь, Ольга Іванівна. "Засади енергоощадної кавітаційної технології очищення стічних вод від ароматичних сполук". Thesis, КПІ ім. Ігоря Сікорського, 2020. https://ela.kpi.ua/handle/123456789/32167.

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Робота виконана на кафедрі хімії і технології неорганічних речовин Національного університету “Львівська політехніка” Міністерства освіти і науки України<br>У дисертації наведено результати досліджень з очищення водних середовищ від ароматичних сполук, зокрема бензену і толуену. Встановлено вплив температури, тривалості кавітаційного оброблення та кисню на їх деструкцію. Виявлено ефект кавітаційного ініціювання розкладу ароматичних сполук, зокрема внаслідок змішування кавітаційно обробленої та вихідної стічної вод. Ефективність розкладу бензену підтверджено дослідженнями з використанням гідрод

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41

Abed, Nedam. "The sonochemical leaching of Chalcopyrite." Thesis, 2002. http://hdl.handle.net/2429/12786.

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A fundamental study of the sonochemical leaching of chalcopyrite in ferric ion media has been performed to understand and quantify the effects of sonication and other parameters on leaching reactions. The study covers sulfate and chloride media. The main leaching reaction: CuFeS₂ (s) + 4Fe₃ + (aq) -> Cu₂ + (aq) + 5Fe₂ + (aq) + 2S (s) was found to be dependent on temperature and initial particle size, but less dependent on ferric ion concentration. Leaching kinetics were not affected by ferrous ion concentration or the amount of chalcopyrite added. Leaching was performed under a varie

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42

TRAN, VIET BAO KHUYEN. "QUANTIFICATION AND INTENSIFICATION OF SONOCHEMICAL EFFECTS." Thesis, 2014. http://hdl.handle.net/2237/20307.

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43

Ganesh, N. "Studies On Batch And Continuous Sonochemical Reactors." Thesis, 1999. https://etd.iisc.ac.in/handle/2005/1667.

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Ganesh, N. "Studies On Batch And Continuous Sonochemical Reactors." Thesis, 1999. http://etd.iisc.ernet.in/handle/2005/1667.

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45

Shieh, Yuh-Chern, and 謝玉宸. "Modal Analysis and Experiment of Sonochemical Cell." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/59726823660402875680.

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碩士<br>國立成功大學<br>機械工程學系碩博士班<br>96<br>Now, there are many methods which can produce nano-powder. Using high intensity ultrasound is one way of those methods. The ultrasound is generated using a piezoelectric transducer and is amplified thru a horn emersed in liquid. Enormous cavitation bubbles are then produced around the horn tip and cause the effects of materials refined and sonochemistry. But this method will make the horn tip be quickly eroded by cavitation bubbles. The erosion not only shortens the life time of the horn, but also pollutes the sample in sonochemical cell. In this study, we d

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Yao, Ming-Tzung, and 姚明宗. "Analysis and Experiment of Resonant Sonochemical Cell." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/91179120472182142247.

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碩士<br>國立成功大學<br>機械工程學系碩博士班<br>97<br>Sonochemical effects of high intensity ultrasound come mainly from acoustic cavitation. Cavitation bubble collapse in liquid is so violent that very high local pressure and temperature, combined with extraordinarily cooling, provide a unique environment for driving chemical reactions under extreme conditions. In general, high power ultrasonic sonochemical systems utilize a metal horn to amplify the intensity of the ultrasound generated from a piezoelectric transducer. As a result, cavitation bubbles form near the horn tip, causing severe erosion of the horn,

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Wu, Tao. "Sonochemical and Hydrophobic Modification of Chitin and Chitosan." 2007. http://trace.tennessee.edu/utk_graddiss/286.

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Chitin and chitosan are linear polysaccharides consisting of acetyl-glucosamine and glucosamine units with many potential applications in biomedicine, agriculture and food industry. In the food industry, chitosan can be used as antimicrobial agent and to create active packaging to improve food quality and extend shelf life. Commercial applications of chitosan are closely associated with its functional properties and biological activity, which are primarily governed by two structural properties: degree of acetylation (DA) and molecular weight (MW). The overall goal of this study was to develop

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Wu, Tao. "Sonochemical and hydrophobical modification of chitin and chitosan." 2007. http://etd.utk.edu/2007/WuTao.pdf.

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Li-YenFeng and 馮笠晏. "Development of a High-efficiency Sonochemical Flow Cell." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/96741994313348543468.

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Chin-Chi-Chen and 陳慶錡. "Microbubble-Assisted Sonochemical Degradation of Ibuprofen in Water." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/51252107488347717416.

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碩士<br>東海大學<br>環境科學與工程學系<br>103<br>In this study, ultrasound is employed to initiate chemical reactions in the abatement of organic contaminants in water. Factors affecting the sonochemical efficiency such as the reactor type, ultrasonic frequency, acoustic power, pH, and microbubbles were examined. The main objective of this study is to understand the effects of microbubbles in the enhancement of sonochemical degradation efficiency. The target compound selected for this study is Ibuprofen, an emerging contaminant frequently found in Taiwan's wastewater effluents. In experiments, three differen

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