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Effects of Microbubbles on Removal of Viscous Oil Adhering to Channel Wall. Chem Eng Res Des 2023. [DOI: 10.1016/j.cherd.2023.03.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
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Soares FA, Martins Dos Santos B, Rosa SL, Loiola SHN, Suzuki CTN, Sabadini E, Bresciani KDS, Falcão AX, Gomes JF. Dissolved air flotation as potential new mechanism for intestinal parasite diagnosis in feces. Acta Trop 2021; 224:106137. [PMID: 34562419 DOI: 10.1016/j.actatropica.2021.106137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 08/17/2021] [Accepted: 09/15/2021] [Indexed: 01/08/2023]
Abstract
The parasitological examination of feces is recommended for the laboratory diagnosis of intestinal parasites due to its practicality, low-cost, and moderate diagnostic sensitivity. Dissolved Air Flotation (DAF) is an efficient technical principle used in other areas to separate dispersed solids. This study sought the preliminary evaluation of a proof-of-concept prototype as a tool for detecting species of parasites by adjusting DAF. Two DAF prototype units were developed to evaluate microbubbles' generation amidst fecal suspension and parasites' capture. For this evaluation, samples were screened and processed by the TF-Test technique (Control) and simultaneously by DAF device. The dimensional and attachment characteristics in the formation of the microbubbles were evaluated, and the percentage of parasitic recovery in floated and not-floated regions compared by Student's t-test. The second prototype unit proved to be more efficient in forming microbubbles with diameters between 34 and 170µm. The flotation tests showed a recovery of 73.27%, 58.12%, 37.85%, and 91.89% for Ascaris lumbricoides, Hymenolepis diminuta, Giardia duodenalis, and Strongyloides stercoralis, respectively. This study confirmed the selective interaction between microbubbles and parasite eggs and larvae during the flotation process using the DAF principle for the first time through imaging.
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Affiliation(s)
- Felipe Augusto Soares
- School of Medical Sciences, University of Campinas, Campinas, São Paulo 13083-889, Brazil; Laboratory of Image Data Science (LIDS), Institute of Computing (IC), University of Campinas, Campinas, São Paulo, Brazil.
| | - Bianca Martins Dos Santos
- School of Medical Sciences, University of Campinas, Campinas, São Paulo 13083-889, Brazil; Laboratory of Image Data Science (LIDS), Institute of Computing (IC), University of Campinas, Campinas, São Paulo, Brazil
| | - Stefany Laryssa Rosa
- School of Medical Sciences, University of Campinas, Campinas, São Paulo 13083-889, Brazil; Laboratory of Image Data Science (LIDS), Institute of Computing (IC), University of Campinas, Campinas, São Paulo, Brazil
| | - Saulo Hudson Nery Loiola
- School of Medical Sciences, University of Campinas, Campinas, São Paulo 13083-889, Brazil; Laboratory of Image Data Science (LIDS), Institute of Computing (IC), University of Campinas, Campinas, São Paulo, Brazil
| | - Celso Tetsuo Nagase Suzuki
- Laboratory of Image Data Science (LIDS), Institute of Computing (IC), University of Campinas, Campinas, São Paulo, Brazil; ImmunoCamp Science and Technology, Vinhedo, São Paulo, Brazil
| | - Edvaldo Sabadini
- Department of Physical-Chemistry, Institute of Chemistry, University of Campinas, Campinas, São Paulo, Brazil
| | | | - Alexandre Xavier Falcão
- Laboratory of Image Data Science (LIDS), Institute of Computing (IC), University of Campinas, Campinas, São Paulo, Brazil
| | - Jancarlo Ferreira Gomes
- School of Medical Sciences, University of Campinas, Campinas, São Paulo 13083-889, Brazil; Laboratory of Image Data Science (LIDS), Institute of Computing (IC), University of Campinas, Campinas, São Paulo, Brazil
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Azimi-Boulali J, Madadelahi M, Madou MJ, Martinez-Chapa SO. Droplet and Particle Generation on Centrifugal Microfluidic Platforms: A Review. MICROMACHINES 2020; 11:mi11060603. [PMID: 32580516 PMCID: PMC7344714 DOI: 10.3390/mi11060603] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 06/17/2020] [Accepted: 06/18/2020] [Indexed: 01/09/2023]
Abstract
The use of multiphase flows in microfluidics to carry dispersed phase material (droplets, particles, bubbles, or fibers) has many applications. In this review paper, we focus on such flows on centrifugal microfluidic platforms and present different methods of dispersed phase material generation. These methods are classified into three specific categories, i.e., step emulsification, crossflow, and dispenser nozzle. Previous works on these topics are discussed and related parameters and specifications, including the size, material, production rate, and rotational speed are explicitly mentioned. In addition, the associated theories and important dimensionless numbers are presented. Finally, we discuss the commercialization of these devices and show a comparison to unveil the pros and cons of the different methods so that researchers can select the centrifugal droplet/particle generation method which better suits their needs.
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Affiliation(s)
- Javid Azimi-Boulali
- School of Engineering and Sciences, Tecnológico de Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey 64849, NL, Mexico;
| | - Masoud Madadelahi
- School of Engineering and Sciences, Tecnológico de Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey 64849, NL, Mexico;
- Correspondence: (M.M.); (S.O.M.-C.)
| | - Marc J. Madou
- Department of Mechanical and Aerospace Engineering, University of California Irvine, Irvine, CA 92697, USA;
| | - Sergio O. Martinez-Chapa
- School of Engineering and Sciences, Tecnológico de Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey 64849, NL, Mexico;
- Correspondence: (M.M.); (S.O.M.-C.)
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Suwartha N, Syamzida D, Priadi CR, Moersidik SS, Ali F. Effect of size variation on microbubble mass transfer coefficient in flotation and aeration processes. Heliyon 2020; 6:e03748. [PMID: 32280808 PMCID: PMC7138913 DOI: 10.1016/j.heliyon.2020.e03748] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 03/31/2020] [Accepted: 04/01/2020] [Indexed: 11/19/2022] Open
Abstract
Microbubble technology dramatically raises the efficiency of the flotation and aeration processes of water treatment plants (WTPs), which see extensive use in developed countries. A local institution, Indonesia Water Institute, has tried to investigate microbubble technology intended for lab-scale WTP. However, the current reactor system does not yet meet the microbubble criteria, especially as it has had few investigations of its abilities in flotation and aeration. This study aims to analyze the effect of size variations that affect the rising velocity and mass transfer coefficient (kLa) of aeration contact time. Three local spargers were used to produce microbubbles. Bubble diameters were measured optically and analyzed using ImageJ software. The dissolved oxygen (DO) concentration was measured every minute using an automated sensor so that the kLa could be determined. Of the three spargers, the smallest bubble size was produced by the vortex type with an average bubble diameter of 89 μm and the slowest rising velocity of 17.67 m/h. It also yielded the highest kLa of 0.297/min, which gave an aeration contact time of 3.64 minutes. The experimental uses of three local spargers revealed that the smaller the microbubble diameter, the higher the mass transfer coefficient in flotation and aeration processes. This research can be the basis for developing microbubble technology for WTP in Indonesia.
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Affiliation(s)
- Nyoman Suwartha
- Environmental Engineering Study Program, Department of Civil Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok, 16424, Indonesia
| | - Destrianti Syamzida
- Environmental Engineering Study Program, Department of Civil Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok, 16424, Indonesia
| | - Cindy Rianti Priadi
- Environmental Engineering Study Program, Department of Civil Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok, 16424, Indonesia
| | - Setyo Sarwanto Moersidik
- Environmental Engineering Study Program, Department of Civil Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok, 16424, Indonesia
| | - Firdaus Ali
- Indonesia Water Institute, Tanjung Barat, DKI Jakarta, 12530, Indonesia
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Zhang H, Liu C, Ou Y, Chen T, Yang L, Hu Z. Development of a helical coagulation reactor for harvesting microalgae. J Biosci Bioeng 2019; 127:447-450. [DOI: 10.1016/j.jbiosc.2018.09.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 08/28/2018] [Accepted: 09/19/2018] [Indexed: 10/28/2022]
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Donneys-Victoria D, Bermúdez-Rubio D, Torralba-Ramírez B, Marriaga-Cabrales N, Machuca-Martínez F. Removal of indigo carmine dye by electrocoagulation using magnesium anodes with polarity change. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:7164-7176. [PMID: 30649696 DOI: 10.1007/s11356-019-04160-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Accepted: 01/03/2019] [Indexed: 06/09/2023]
Abstract
The aim of this study was to evaluate the performance of high purity magnesium and the magnesium-aluminum-zinc alloy AZ31 as sacrificial anodes in an electrocoagulation process with polarity change for the treatment of synthetic indigo carmine solution. It was studied the effect of the main parameters such as temperature, anodic material, current density, initial dye concentration, and agitation speed on the diminishing of indigo carmine concentration and non-purgeable organic carbon. Also, image analysis was used in conjunction with zeta potential measurements to understand the mechanism of flocs formation. The best results were 80% and 96% removal for non-purgeable organic carbon and dye content respectively at room temperature, by using turbulent regime, initial dye concentration of 100 mg L-1 and 50 A m-2 as current density with AZ31 alloy as electrodes. Particularly, high purity magnesium reached 75% in non-purgeable organic carbon removal and 86% in dye removal at the conditions described above. Finally, an additional improvement of 43% in the diminishing of the organic carbon content was observed when polarity change was used, a phenomenon that was attributed to the distribution of the oxidation reaction between electrodes, avoiding the saturation of the surface with oxide and hydroxide layers. Major areas and major fractal dimension were obtained by using a polarity change.
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Affiliation(s)
- Dayana Donneys-Victoria
- Grupo de Investigación en Procesos Avanzados para Tratamientos Químicos y Biológicos (GAOX) - Escuela de Ingeniería Química, Facultad de Ingeniería, Universidad del Valle, Cali, Colombia.
| | - David Bermúdez-Rubio
- Grupo de Investigación en Procesos Avanzados para Tratamientos Químicos y Biológicos (GAOX) - Escuela de Ingeniería Química, Facultad de Ingeniería, Universidad del Valle, Cali, Colombia
| | - Brian Torralba-Ramírez
- Grupo de Investigación en Procesos Avanzados para Tratamientos Químicos y Biológicos (GAOX) - Escuela de Ingeniería Química, Facultad de Ingeniería, Universidad del Valle, Cali, Colombia
| | - Nilson Marriaga-Cabrales
- Grupo de Investigación en Procesos Avanzados para Tratamientos Químicos y Biológicos (GAOX) - Escuela de Ingeniería Química, Facultad de Ingeniería, Universidad del Valle, Cali, Colombia
| | - Fiderman Machuca-Martínez
- Grupo de Investigación en Procesos Avanzados para Tratamientos Químicos y Biológicos (GAOX) - Escuela de Ingeniería Química, Facultad de Ingeniería, Universidad del Valle, Cali, Colombia
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Xu X, Ge X, Qian Y, Zhang B, Wang H, Yang Q. Effect of nozzle diameter on bubble generation with gas self-suction through swirling flow. Chem Eng Res Des 2018. [DOI: 10.1016/j.cherd.2018.04.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Zhang H, Ou Y, Chen T, Yang L, Hu Z. Harvesting Chlorella vulgaris via rapid sedimentation induced by combined coagulants and tapered shear. Biotechnol Lett 2018; 40:697-702. [DOI: 10.1007/s10529-018-2519-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Accepted: 01/19/2018] [Indexed: 10/18/2022]
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Zhang H, Lin Z, Tan D, Liu C, Kuang Y, Li Z. A novel method to harvest Chlorella sp. by co-flocculation/air flotation. Biotechnol Lett 2016; 39:79-84. [DOI: 10.1007/s10529-016-2219-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Accepted: 09/13/2016] [Indexed: 11/30/2022]
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Bai SJ, Wen SM, Liu DW, Zhang WB. Separation of Phosphorus and Magnetic Mineral Fines from Siderite Reductive Ore by Applying Magnetic Flocculation. SEP SCI TECHNOL 2014. [DOI: 10.1080/01496395.2013.877036] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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