1
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Chen M, Xing Y, Kong J, Wang D, Lu Y. Bubble manipulates the release of viral aerosols in aeration. JOURNAL OF HAZARDOUS MATERIALS 2024; 461:132534. [PMID: 37741211 DOI: 10.1016/j.jhazmat.2023.132534] [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: 03/17/2023] [Revised: 07/19/2023] [Accepted: 09/10/2023] [Indexed: 09/25/2023]
Abstract
Bubble bursting is a common phenomenon in many industrial and natural processes, plays an important role in mediating mass transfer across the water-air interface. But the interplay between bubbles and pathogens remains unclear and the mechanisms of virus aerosolization by the bubble properties have not been well studied. The main objective of this study was to evaluate the water-to-air transfer of viruses by bubbles of different sizes. Unlike the dominant view of smaller bubbles less bioaerosols, it was found that the smaller bubbles could generate significantly more viral aerosols regardless of the virus species (Phi6, MS2, PhiX174, and T7), when the Sauter mean bubble diameters were between 0.56 and 1.65 mm under constant aeration flow rate. The mechanism studies denied the possibilities of more aerosols or better dispersion of viruses in the aerosols generated by the smaller bubbles. However, deeper bubbling could transfer more viruses to the air for MS2, PhiX174, and T7. Their concentrations in aerosols were linearly related to the bubbling depth for these non-enveloped viruses, which demonstrates the bubble-scavenging effect as a main mechanism except for the enveloped virus Phi6. Whereas, unlike these three non-enveloped viruses, Phi6 could survive relatively better in the aerosols generated from the smaller bubbles, though the enhancement of aerosolization by the smaller bubbles was much larger than the improvement of survival. Other mechanisms still remain unknown for this enveloped virus. This study suggests that the attempt of decreasing the bubble size in aeration tank of the wastewater treatment plant might significantly increase the solubility of oxygen as well as the risk of viral aerosols.
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Affiliation(s)
- Menghao Chen
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, State Environment Protection Key Laboratory of Microorganism Application and Risk Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Yingying Xing
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, State Environment Protection Key Laboratory of Microorganism Application and Risk Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Jiayang Kong
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, State Environment Protection Key Laboratory of Microorganism Application and Risk Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Dongbin Wang
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, State Environment Protection Key Laboratory of Microorganism Application and Risk Control, School of Environment, Tsinghua University, Beijing 100084, China.
| | - Yun Lu
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, State Environment Protection Key Laboratory of Microorganism Application and Risk Control, School of Environment, Tsinghua University, Beijing 100084, China.
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2
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Ozkan A, Esmeli K. Use of ultrasonic treatment as a pre-phase in the shear flocculation process. ULTRASONICS 2023; 134:107052. [PMID: 37295220 DOI: 10.1016/j.ultras.2023.107052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 03/04/2023] [Accepted: 05/23/2023] [Indexed: 06/12/2023]
Abstract
The use of ultrasonic energy has mostly been investigated for the flotation process in mineral processing, but its application to flocculation with collectors is extremely limited. Therefore, in this study, the effect of ultrasound in the shear flocculation technique, was intended to be revealed by using a celestite sample. The initial studies carried out for this purpose showed that in the absence of any reagent, the ultrasonication decreased the surface charge of the mineral, which caused the coagulation of the celestite suspension. In this scope, the short application of ultrasound at high power (i.e., 2 min batch regime and 150 W) provided a more positive effect. In the flocculation process carried out with collectors, the use of ultrasonic energy as a pre-phase for the suspension enhanced the aggregation of celestite particles. This result also fits well with the rise in the contact angle and the decrease in the zeta potential of the mineral due to the ultrasound. However, when the ultrasound was applied directly to the flocculation phase (ultrasound-induced flocculation only), the aggregation of celestite particles was affected adversely. Consequently, it can be said that in the shear flocculation process, the ultrasonic treatment should be used as a pre-phase for mineral suspensions. In this case, the flocculation of fine mineral particles in suspensions with surfactants can be improved by ultrasonic processing.
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Affiliation(s)
- Alper Ozkan
- Department of Mining Engineering, Konya Technical University, Konya, Turkey
| | - Kiraz Esmeli
- Department of Mining Engineering, Konya Technical University, Konya, Turkey.
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3
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Turysbekov D, Tussupbayev N, Narbekova S, Kaldybayeva Z. Combined microflotation effects in polymetallic ores beneficiation. SN APPLIED SCIENCES 2023. [DOI: 10.1007/s42452-023-05347-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
Abstract
AbstractProducing of heterogeneous concentrates with good recovery in the processing of polymetallic ores is a challenge. Many factors must be taken into account including ore grinding, reagent mode, water composition, pulp density and the volume of supplied bubbles when producing high-quality selective concentrates. Microbubbles smaller than 50 μm in size were produced based on the frother oxal T-92 at different concentrations using a generator. The most optimal number of microbubbles smaller than 50 µm was produced at a T-92 concentration of 0.5 g/dm3. Polymetallic ore of Kazakhstan deposit was used for flotation studies. The studies were conducted in the copper-lead rough concentrate producing cycle. Flotation active minerals chalcopyrite and galena pass into the foam product, while sphalerite and pyrite remain in the chamber product in this cycle. In this paper, the density of pulp (20, 30 and 50%) as one of the main factors that effects the selectivity of flotation is studied. The kinetics of ore flotation in the base mode and with the use of a microbubble generator has been studied at these densities. Test experiments have been performed at the optimum density. The use of a water–air microemulsion generator makes it possible to maintain the quality of the copper-lead concentrate and increase the extraction of copper into the rough concentrate by 7.41%, lead by 5.98%.
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4
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Reis AS, Mendes TF, Petri Júnior I, Barrozo MAS. Influence of bubble size on performance of apatite flotation of different particle sizes. PARTICULATE SCIENCE AND TECHNOLOGY 2023. [DOI: 10.1080/02726351.2023.2170840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Angelica S. Reis
- School of Chemical Engineering, Federal University of Uberlândia, Uberlândia, Brazil
| | - Thessa F. Mendes
- School of Chemical Engineering, Federal University of Uberlândia, Uberlândia, Brazil
| | | | - Marcos A. S. Barrozo
- School of Chemical Engineering, Federal University of Uberlândia, Uberlândia, Brazil
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5
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Zhou K, Sontti SG, Zhou J, Esmaeili P, Zhang X. Microbubble-Enhanced Bitumen Separation from Tailing Slurries with High Solid Contents. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c03271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Kaiyu Zhou
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AlbertaT6G 1H9, Canada
| | - Somasekhara Goud Sontti
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AlbertaT6G 1H9, Canada
| | - Joe Zhou
- Disruptive Separation Technology Ltd. (DSTL), Edmonton, AlbertaT6X 1M5, Canada
| | | | - Xuehua Zhang
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AlbertaT6G 1H9, Canada
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6
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Wang C, Lü Y, Song C, Zhang D, Rong F, He L. Separation of emulsified crude oil from produced water by gas flotation: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 845:157304. [PMID: 35839883 DOI: 10.1016/j.scitotenv.2022.157304] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 07/01/2022] [Accepted: 07/08/2022] [Indexed: 06/15/2023]
Abstract
The development and production of oil and gas fields would eventually result in a considerable amount of oily generated water, posing serious risks to humans and the environment. Nowadays, the oil concentration in the drainage stream of the produced water is strictly regulated, and many countries have established strict emission standards. As an indispensable oily wastewater treatment technology, flotation technology has attracted much attention because of its maturity, economy, practicality, and relative efficiency. Firstly, this paper summarizes and compares flotation techniques, such as dissolved gas flotation, induced gas flotation, electroflotation, and compact flotation units widely used in produced water treatment offshore in recent years. Considering the complexity of the mechanism of oil removal by air flotation, the mechanism of the oil droplet-bubble interaction is further discussed. The effects of flocculant, PH, and salinity on the oil droplet-bubble interaction in the flotation process were summarized from the perspective of the microscopic colloidal interface, which has a specific guiding role in improving the oil removal efficiency in the gas flotation process. Finally, the research status of produced water treatment by air flotation is summarized, and the feasible research direction is put forward.
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Affiliation(s)
- Ce Wang
- College of Pipeline and Civil Engineering, China University of Petroleum (East China), Shandong, Qingdao 266580, China
| | - Yuling Lü
- College of Pipeline and Civil Engineering, China University of Petroleum (East China), Shandong, Qingdao 266580, China.
| | - Chao Song
- College of Pipeline and Civil Engineering, China University of Petroleum (East China), Shandong, Qingdao 266580, China
| | - Dechong Zhang
- Xianhe Oil Production Plant, Shengli Oilfield Company, Sinopec, Shandong, Dongying 257000, China
| | - Feng Rong
- College of Pipeline and Civil Engineering, China University of Petroleum (East China), Shandong, Qingdao 266580, China
| | - Limin He
- College of Pipeline and Civil Engineering, China University of Petroleum (East China), Shandong, Qingdao 266580, China
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7
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Shadman M, Hosseini MR, Zinjenab ZT, Azimi E. Significant reduction in collector consumption by implementing ultrafine bubbles in lead and zinc rougher flotation. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.118096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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8
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Fahad MK, Prakash R, Majumder SK, Ghosh P. Investigation of the induction time and recovery in a flotation column: A kinetic analysis. SEP SCI TECHNOL 2022. [DOI: 10.1080/01496395.2022.2084629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Musliyar Kurungattil Fahad
- Applied Multiphase Process Research Lab, Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, India
| | - Ritesh Prakash
- Applied Multiphase Process Research Lab, Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, India
- Institute of Quantum Biophysics, Sungkyunkwan University, Suwon, Republic of Korea
| | - Subrata Kumar Majumder
- Applied Multiphase Process Research Lab, Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, India
- Centre for the Environment, Indian Institute of Technology Guwahati, Guwahati, India
| | - Pallab Ghosh
- Applied Multiphase Process Research Lab, Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, India
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9
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Enhancement of selective fine particle flotation by microbubbles generated through hydrodynamic cavitation. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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10
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Recent Developments in Generation, Detection and Application of Nanobubbles in Flotation. MINERALS 2022. [DOI: 10.3390/min12040462] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This paper reviews recent developments in the fundamental understating of ultrafine (nano) bubbles (NBs) and presents technological advances and reagent types used for their generation in flotation. The generation of NBs using various approaches including ultrasonication, solvent exchange, temperature change, hydrodynamic cavitation, and electrolysis was assessed. Most importantly, restrictions and opportunities with respect to the detection of NBs were comprehensively reviewed, focusing on various characterization techniques such as the laser particle size analyzer (LPSA), nanoparticle tracking (NTA), dynamic light scattering (DLS), zeta-phase light scattering (ZPALS), and zeta sizer. As a key feature, types and possible mechanisms of surfactants applied to stabilize NBs were also explored. Furthermore, flotation-assisted nano-bubbles was reported as an efficient method for recovering minerals, with a special focus on flotation kinetics. It was found that most researchers reported the existence and formation of NBs by different techniques, but there is not enough information on an accurate measurement of their size distribution and their commonly used reagents. It was also recognized that a suitable method for generating NBs, at a high rate and with a low cost, remains a technical challenge in flotation. The application of hydrodynamic cavitation based on a venturi tube and using the LPSA and NTA in laboratory scales were identified as the most predominant approaches for the generation and detection of NBs, respectively. In this regard, neither pilot- nor industrial-scale case studies were found in the literature; they were only highlighted as future works. Although the NB-stabilizing effects of electrolytes have been well-explored, the mechanisms related to surfactants remain the issue of further investigation. The effectiveness of the NB-assisted flotation processes has been mostly addressed for single minerals, and only a few works have been reported for bulk materials. Finally, we believe that the current review paves the way for an appropriate selection of generating and detecting ultrafine bubbles and shines the light on a profound understanding of its effectiveness.
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11
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Liu M, Yu H, Zhang H, Wang K, Tan X, Liu Q. Roles of the hydrophobic and hydrophilic groups of collectors in the flotation of different-sized mineral particles. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128262] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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12
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Li C, Zhang H. Surface nanobubbles and their roles in flotation of fine particles – A review. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2021.11.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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13
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Numerical investigation of air-injected deoiling hydrocyclones using population balance model. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2021.117103] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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14
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Tran HT, Lin C, Hoang HG, Bui XT, Le VG, Vu CT. Soil washing for the remediation of dioxin-contaminated soil: A review. JOURNAL OF HAZARDOUS MATERIALS 2022; 421:126767. [PMID: 34396961 DOI: 10.1016/j.jhazmat.2021.126767] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 07/14/2021] [Accepted: 07/26/2021] [Indexed: 06/13/2023]
Abstract
Dioxin-contaminated soil has attracted worldwide attention due to its potential negative impacts on human health and the ecosystem. Thus, technological development aiming at high treatment efficiency and low cost for dioxin-contaminated soil is largely needed. In this review, approximately 200 documents were involved to summarize up-to-date scientific achievements of soil washing technology for the remediation of dioxin-contaminated soil. The mechanisms, advantages, and limitations of physical separation techniques (e.g. mechanical stirring, mechanical shaking, ultrasonication, and froth flotation) and washing solutions (e.g. organic solvents, edible oils, and surfactants) used for chemical extraction were comprehensively reviewed. Froth flotation is very promising for field-scale soil washing, whereas organic solvents show high removal efficiencies (up to 99%) of dioxins from contaminated soil. Further, the combination of physical separation and chemical extraction can help enhance dioxin removal efficiency (from 1.5 to 2 times), reducing energy consumption and cost (about 2 times). Among available remediation technologies for dioxin-contaminated soil, soil washing is truly promising since it has shown high removal efficiency (66-99% different remediation scales) with reasonable cost (46 - 250 USD per metric ton). However, the washed solution and volatile organic compounds generated during the process remain a concern and should be addressed in future research.
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Affiliation(s)
- Huu Tuan Tran
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan, ROC
| | - Chitsan Lin
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan, ROC.
| | - Hong Giang Hoang
- Faculty of Health Sciences and Finance - Accounting, Dong Nai Technology University, Bien Hoa, Dong Nai 76100, Viet Nam
| | - Xuan Thanh Bui
- Key Laboratory of Advanced Waste Treatment Technology, Vietnam National University Ho Chi Minh (VNU-HCM), Linh Trung Ward, Thu Duc City, Ho Chi Minh City 700000, Viet Nam; Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City 700000, Viet Nam
| | - Van Giang Le
- Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan, ROC
| | - Chi Thanh Vu
- Civil and Environmental Engineering Department, University of Alabama in Huntsville, Huntsville, AL 35899, United States
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15
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Ni C, Zhang Q, Jin M, Xie G, Peng Y, Yu H, Bu X. Effect of high-speed shear flocculation on the flotation kinetics of ultrafine microcrystalline graphite. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2021.10.041] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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16
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Hydrodynamic collisions involving bubbles and mineral particles. CAN J CHEM ENG 2021. [DOI: 10.1002/cjce.24347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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17
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Kargupta W, Browne C, Verdugo L, Hunt I, Stack K, Batchelor W, Tanner J. Flotation as a separation technology for recovering pulp fines and sustainable nanocellulose production. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118810] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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18
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Wu J, Zhang K, Cen C, Wu X, Mao R, Zheng Y. Role of bulk nanobubbles in removing organic pollutants in wastewater treatment. AMB Express 2021; 11:96. [PMID: 34184137 PMCID: PMC8239109 DOI: 10.1186/s13568-021-01254-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 06/15/2021] [Indexed: 02/06/2023] Open
Abstract
The occurrence of a variety of organic pollutants has complicated wastewater treatment; thus, the search for sustainable and effective treatment technology has drawn significant attention. In recent years, bulk nanobubbles, which have extraordinary properties differing from those of microbubbles, including high stability and long residence times in water, large specific surface areas, high gas transfer efficiency and interface potential, and the capability to generate free radicals, have shown attractive technological advantages and promising application prospects for wastewater treatment. In this review, the basic characteristics of bulk nanobubbles are summarized in detail, and recent findings related to their implementation pathways and mechanisms in organic wastewater treatment are systematically discussed, which includes improving the air flotation process, increasing water aeration to promote aerobic biological technologies including biological activated carbon, activated sludge, and membrane bioreactors, and generating active free radicals that oxidise organic compounds. Finally, the current technological difficulties of bulk nanobubbles are analysed, and future focus areas for research on bulk nanobubble technology are also proposed.
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Affiliation(s)
- Jiajia Wu
- College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, 310058 China
| | - Kejia Zhang
- College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, 310058 China
| | - Cheng Cen
- College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, 310058 China
| | - Xiaogang Wu
- College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, 310058 China
| | - Ruyin Mao
- College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, 310058 China
| | - Yingying Zheng
- College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, 310058 China
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19
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Du M, Liu L, Ren J, Fan J, Li G, Cai Y. Study on the classification and floc-flotation process of Huangling coal slime. SEP SCI TECHNOL 2021. [DOI: 10.1080/01496395.2021.1920979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Meili Du
- College of Chemistry and Chemical Engineering, Xi’an University of Science & Technology, Xi’an, People’ S Republic of China
| | - Lei Liu
- College of Chemistry and Chemical Engineering, Xi’an University of Science & Technology, Xi’an, People’ S Republic of China
| | - Jie Ren
- College of Chemistry and Chemical Engineering, Xi’an University of Science & Technology, Xi’an, People’ S Republic of China
- Halagou Coal Preparation Plant, Shendong Washing Center of National Energy Corporation, Yulin, People' s Republic of China
| | - Jinwen Fan
- College of Chemistry and Chemical Engineering, Xi’an University of Science & Technology, Xi’an, People’ S Republic of China
| | - Gang Li
- College of Chemistry and Chemical Engineering, Xi’an University of Science & Technology, Xi’an, People’ S Republic of China
| | - Yuchu Cai
- College of Chemistry and Chemical Engineering, Xi’an University of Science & Technology, Xi’an, People’ S Republic of China
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20
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Semenova SA, Patrakov YF. Influence of Reagent Emulsification on Coal Flotation in the Presence of Gas Microbubbles. COKE AND CHEMISTRY 2021. [DOI: 10.3103/s1068364x21010051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Li D, Zhong H, Li Z, Yin W, Kou J, Sun C. Effect of siderite dissolution on mineral particles interaction in aqueous suspension. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2020.12.067] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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22
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Wang Y, Jin X, Yang S, Wang G, Xu L, Jin P, Shi X, Shi Y. Interactions between flocs and bubbles in the separation zone of dissolved air flotation system. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 761:143222. [PMID: 33203555 DOI: 10.1016/j.scitotenv.2020.143222] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 10/21/2020] [Accepted: 10/21/2020] [Indexed: 06/11/2023]
Abstract
The interaction between flocs and bubbles is crucial to achieve separation efficiency in the separation zone of the dissolved air flotation process. In this study, a micro-scale observation system was established to investigate the interaction between flocs and bubbles in the separation zone of the system. Four periodic interactions were observed-collision, adhesion, coalescence, and desorption (CACD). Small flocs achieved higher unit buoyancy (buoyancy per surface area) than that of large flocs. High collision probability can be obtained between bubbles and small flocs according to Stokes' law and Reynolds experiments. Simulation using Fluent indicated that low-pressure drag acting on small flocs resulted in a high probability of collision. Therefore, small flocs can capture bubbles and accumulate high enough buoyancy in a short time due to the high collision probability and low buoyancy required for small flocs to float. Moreover, the small flocs have a limited number of bubbles on the surface within such a short time, leading to a low probability of desorption and coalescence. The practical verification also show that small flocs are favorable for the high separation efficiency of the flotation process.
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Affiliation(s)
- Yong Wang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Yanta Road, No. 13, Xi'an, Shaanxi Province 710055, China
| | - Xin Jin
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Yanta Road, No. 13, Xi'an, Shaanxi Province 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Yanta Road, No. 13, Xi'an, Shaanxi Province 710055, China.
| | - Shengjiong Yang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Yanta Road, No. 13, Xi'an, Shaanxi Province 710055, China
| | - Gen Wang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Yanta Road, No. 13, Xi'an, Shaanxi Province 710055, China
| | - Lu Xu
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Yanta Road, No. 13, Xi'an, Shaanxi Province 710055, China
| | - Pengkang Jin
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Yanta Road, No. 13, Xi'an, Shaanxi Province 710055, China; Key Laboratory of Northwest Water Resources, Environment and Ecology, Ministry of Education, Xi'an University of Architecture and Technology, Yanta Road, No. 13, Xi'an, Shaanxi Province 710055, China.
| | - Xuan Shi
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Yanta Road, No. 13, Xi'an, Shaanxi Province 710055, China
| | - Yong Shi
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Yanta Road, No. 13, Xi'an, Shaanxi Province 710055, China
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23
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Investigation of nanobubble enhanced reverse anionic flotation of hematite and associated mechanisms. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2020.10.040] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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Wang J, Li X, Ma G, Sui H, He L, Liu R. Removal of residual solvent from solvent-extracted unconventional oil ores gangue by gas bubbling. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117551] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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25
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The role of the pulp-froth interface on particle detachment and selectivity. Adv Colloid Interface Sci 2021; 287:102296. [PMID: 33321332 DOI: 10.1016/j.cis.2020.102296] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 10/07/2020] [Accepted: 10/17/2020] [Indexed: 11/22/2022]
Abstract
The region between the pulp and the froth also known as pulp/froth interface in mineral flotation processes separates the pulp from the froth. Various researchers suggest particle detachment occurs around this region significantly affecting mineral recovery and grade. One of the causes pointed out is sudden deceleration of bubble-particle aggregate upon collision with the interface while another theory suggests detachment to be caused by bubble coalescence. A possible cause of divergence in views may be in the different methods of investigation employed. Though, more than several researchers indicate that detachment occurs, it is not conclusive whether kinetic energy changes or bubble coalesce or a combination of the two is responsible for detachment if any. Thus, this review examines and presents work that has been done on the role of the pulp-froth interface on particle detachment and selectivity. The review also considers the behaviour of a bubble with various interface as found in literature with a view of inferring the dominant cause of detachment at the interface.
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26
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Frank YA, Vorobiev DS, Merzlyakov OE, Sataev FR, Trifonov AA, Kopylov EO, Stryuk KV, Kalinovskaya EA, Gronskiy SV, Chibrikov OV, Perminova VV, Branevskiy YV, Kulizhskiy SP, Hunter TS. Cleaning of oil-polluted bottom sediments of the boreal lake, Samotlor oil field, North Russia: case report. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2020; 82:3062-3073. [PMID: 33341793 DOI: 10.2166/wst.2020.555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Small lakes in areas of intensive crude oil production may be susceptible to oil pollution arising from accidental spills and leaks, eventually leading to the pollution of bottom sediments. Effective cleaning of aquatic bottom sediments remains a challenge. Flotation is a potentially simple and reliable approach for the cleanup of bottom sediments without their excavation from the water body. Full-scale testing of flotation-based technology using the specially designed airlift plant allowed the cleaning of bottom sediments of an unnamed boreal lake ('the lake') within the Samotlor oil field, North Russia, heavily polluted with crude oil several decades ago. The lake bottom sediments are dominated by peat and unevenly polluted with oil. The average oil content in the lake bottom sediments was 111 g kg-1. During the 1.5 months' field test in July-August 2018, the average total oil concentration in the bottom sediments of the lake was reduced to 1.99 g kg-1. Secondary water contamination was minimal; the content of oil hydrocarbons in the water after completion of work did not exceed 0.09 ± 0.04 mg L-1. This study demonstrates that flotation-based technology can be applied for in situ cleaning of oil-contaminated lake bottom sediments including those in boreal climates.
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Affiliation(s)
- Yulia A Frank
- National Research Tomsk State University, Lenina Ave., 36, Tomsk, 634050, Russia E-mail: ; Tomsk Oil and Gas Research and Design Institute (TomskNIPIneft JSC), Mira Ave., 72, Tomsk, 634027, Russia
| | - Danil S Vorobiev
- National Research Tomsk State University, Lenina Ave., 36, Tomsk, 634050, Russia E-mail: ; Tomsk Oil and Gas Research and Design Institute (TomskNIPIneft JSC), Mira Ave., 72, Tomsk, 634027, Russia
| | - Oleg E Merzlyakov
- National Research Tomsk State University, Lenina Ave., 36, Tomsk, 634050, Russia E-mail:
| | - Farid R Sataev
- National Research Tomsk State University, Lenina Ave., 36, Tomsk, 634050, Russia E-mail:
| | - Andrey A Trifonov
- National Research Tomsk State University, Lenina Ave., 36, Tomsk, 634050, Russia E-mail:
| | - Evgeny O Kopylov
- Samotlorneftegaz JSC, Rosneft, Lenina St., 4, the Tyumen Region, Khanty-Mansiysk Autonomous District, Nizhnevartovsk, 628606, Russia
| | - Konstantin V Stryuk
- National Research Tomsk State University, Lenina Ave., 36, Tomsk, 634050, Russia E-mail: ; Samotlorneftegaz JSC, Rosneft, Lenina St., 4, the Tyumen Region, Khanty-Mansiysk Autonomous District, Nizhnevartovsk, 628606, Russia
| | - Ekaterina A Kalinovskaya
- Samotlorneftegaz JSC, Rosneft, Lenina St., 4, the Tyumen Region, Khanty-Mansiysk Autonomous District, Nizhnevartovsk, 628606, Russia
| | - Sergey V Gronskiy
- Samotlorneftegaz JSC, Rosneft, Lenina St., 4, the Tyumen Region, Khanty-Mansiysk Autonomous District, Nizhnevartovsk, 628606, Russia
| | - Oleg V Chibrikov
- Samotlorneftegaz JSC, Rosneft, Lenina St., 4, the Tyumen Region, Khanty-Mansiysk Autonomous District, Nizhnevartovsk, 628606, Russia
| | - Vladislava V Perminova
- National Research Tomsk State University, Lenina Ave., 36, Tomsk, 634050, Russia E-mail:
| | - Yaroslav V Branevskiy
- National Research Tomsk State University, Lenina Ave., 36, Tomsk, 634050, Russia E-mail:
| | - Sergey P Kulizhskiy
- National Research Tomsk State University, Lenina Ave., 36, Tomsk, 634050, Russia E-mail:
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Nuorivaara T, Serna-Guerrero R. Amphiphilic cellulose and surfactant mixtures as green frothers in mineral flotation. 1. Characterization of interfacial and foam stabilization properties. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125297] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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28
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Li L, Hao H, Yuan Z, Liu Z, Li C. Regulating effects of citric acid and pregelatinized starch on selective flocculation flotation of micro-fine siderite. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113726] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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29
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Thomas B, Ohde D, Matthes S, Engelmann C, Bubenheim P, Terasaka K, Schlüter M, Liese A. Comparative investigation of fine bubble and macrobubble aeration on gas utility and biotransformation productivity. Biotechnol Bioeng 2020; 118:130-141. [PMID: 32886350 DOI: 10.1002/bit.27556] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 08/06/2020] [Accepted: 08/30/2020] [Indexed: 01/02/2023]
Abstract
The sufficient provision of oxygen is mandatory for enzymatic oxidations in aqueous solution, however, in process optimization this still is a bottleneck that cannot be overcome with the established methods of macrobubble aeration. Providing higher mass transfer performance through microbubble aerators, inefficient aeration can be overcome or improved. Investigating the mass transport performance in a model protein solution, the microbubble aeration results in higher kL a values related to the applied airstream in comparison with macrobubble aeration. Comparing the aerators at identical kL a of 160 and 60 1/h, the microbubble aeration is resulting in 25 and 44 times enhanced gas utility compared with aeration with macrobubbles. To prove the feasibility of microbubbles in biocatalysis, the productivity of a glucose oxidase catalyzed biotransformation is compared with macrobubble aeration as well as the gas-saving potential. In contrast to the expectation that the same productivities are achieved at identically applied kL a, microbubble aeration increased the gluconic acid productivity by 32% and resulted in 41.6 times higher oxygen utilization. The observed advantages of microbubble aeration are based on the large volume-specific interfacial area combined with a prolonged residence time, which results in a high mass transfer performance, less enzyme deactivation by foam formation, and reduced gas consumption. This makes microbubble aerators favorable for application in biocatalysis.
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Affiliation(s)
- Benjamin Thomas
- Hamburg University of Technology, Institute of Technical Biocatalysis, Hamburg, Germany
| | - Daniel Ohde
- Hamburg University of Technology, Institute of Technical Biocatalysis, Hamburg, Germany
| | - Simon Matthes
- Hamburg University of Technology, Institute of Multiphase Flows, Hamburg, Germany
| | - Claudia Engelmann
- Hamburg University of Technology, Institute of Technical Biocatalysis, Hamburg, Germany
| | - Paul Bubenheim
- Hamburg University of Technology, Institute of Technical Biocatalysis, Hamburg, Germany
| | - Koichi Terasaka
- Department of Applied Chemistry, Keio University, Yokohama, Japan
| | - Michael Schlüter
- Hamburg University of Technology, Institute of Multiphase Flows, Hamburg, Germany
| | - Andreas Liese
- Hamburg University of Technology, Institute of Technical Biocatalysis, Hamburg, Germany
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30
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Wang X, Zhou S, Bu X, Ni C, Xie G, Peng Y. Investigation on interaction behavior between coarse and fine particles in the coal flotation using focused beam reflectance measurement (FBRM) and particle video microscope (PVM). SEP SCI TECHNOL 2020. [DOI: 10.1080/01496395.2020.1777428] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Xuexia Wang
- Key Laboratory of Coal Processing and Efficient Utilization of Ministry of Education, School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, Jiangsu, China
| | - Shaoqi Zhou
- Key Laboratory of Coal Processing and Efficient Utilization of Ministry of Education, School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, Jiangsu, China
| | - Xiangning Bu
- Key Laboratory of Coal Processing and Efficient Utilization of Ministry of Education, School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, Jiangsu, China
| | - Chao Ni
- Key Laboratory of Coal Processing and Efficient Utilization of Ministry of Education, School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, Jiangsu, China
| | - Guangyuan Xie
- Key Laboratory of Coal Processing and Efficient Utilization of Ministry of Education, School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, Jiangsu, China
| | - Yaoli Peng
- Key Laboratory of Coal Processing and Efficient Utilization of Ministry of Education, School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, Jiangsu, China
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31
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Patrakov YF, Semenova SA, Papina TA. Influence of Gas Microbubbles on the Wettability of Coal Surfaces. COKE AND CHEMISTRY 2020. [DOI: 10.3103/s1068364x20020076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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32
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Ostadrahimi M, Farrokhpay S, Gharibi K, Dehghani A. A new empirical model to calculate bubble size in froth flotation columns. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124672] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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33
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Shi H, Li M, Liu Q, Nikrityuk P. Experimental and numerical study of cavitating particulate flows in a Venturi tube. Chem Eng Sci 2020. [DOI: 10.1016/j.ces.2020.115598] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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34
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Braga FYA, Luz José AM, Milhomem FO. Size-dependent kinetics of iron ore reverse flotation. PARTICULATE SCIENCE AND TECHNOLOGY 2020. [DOI: 10.1080/02726351.2018.1558319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Frederic Y. A. Braga
- Department of Mining Engineer, Federal University of Ouro Preto, Ouro Preto, Brazil
- Mosaic Fertilizantes do Brasil Ltda, São Paulo, Brazil
| | - A. M. Luz José
- Department of Mining Engineer, Federal University of Ouro Preto, Ouro Preto, Brazil
| | - Felipe O. Milhomem
- Department of Mining Engineer, Federal University of Ouro Preto, Ouro Preto, Brazil
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35
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Ding S, Xing Y, Zheng X, Zhang Y, Cao Y, Gui X. New Insights into the Role of Surface Nanobubbles in Bubble-Particle Detachment. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:4339-4346. [PMID: 32237714 DOI: 10.1021/acs.langmuir.0c00359] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
It is well recognized that an improved flotation recovery can be achieved by introducing nanobubbles to common flotation practice due to the increased capture efficiency between bubbles and particles. However, the specific role of nanobubbles in bubble-particle interactions (collision, attachment, and detachment) is not well understood. In the present study, we explore the role of surface nanobubbles in bubble-particle detachment. Surface nanobubbles were introduced via ethanol-water exchange and their presence was confirmed using laser scanning confocal microscopy (LSCM). The effect of surface nanobubbles on bubble-particle detachment behavior was then investigated using an oscillating bubble apparatus. Bubble-particle aggregate stability was evaluated using critical detachment amplitude. Further, bubble-particle detachment forces in the absence and presence of nanobubbles were measured directly using a micro-nano mechanical testing system. Using LSCM, numerous surface nanobubbles were observed on a glass surface after ethanol-water exchange, regardless of wettability. The number and lateral dimensions of generated nanobubbles on the hydrophilic surface were significantly smaller than that on the hydrophobic surface. Surface nanobubbles increased the stability of bubble-particle aggregates. Macroscopic air bubbles coalesce with the nanobubbles on the particle surface, increasing the pinning effect of the three-phase contact line and advancing contact angle. As a result, the capillary force between bubbles and particles increased in the presence of surface nanobubbles.
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Affiliation(s)
- Shihao Ding
- Chinese National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China
- School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China
| | - Yaowen Xing
- Chinese National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China
| | - Xi Zheng
- Chinese National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China
- School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China
| | - Youfei Zhang
- Chinese National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China
- School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China
| | - Yijun Cao
- Chinese National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China
- Henan Province Industrial Technology Research Institute of Resources and Materials, Zhengzhou University, Zhengzhou 450001, China
| | - Xiahui Gui
- Chinese National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China
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36
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Patrakov YF, Semenova SA, Kharlampenkova YA. Microbubble Modification of Coal Surfaces before Flotation. COKE AND CHEMISTRY 2020. [DOI: 10.3103/s1068364x20010056] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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37
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A lattice Boltzmann study of the collisions in a particle-bubble system under turbulent flows. POWDER TECHNOL 2020. [DOI: 10.1016/j.powtec.2019.11.045] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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38
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Mao Y, Xia W, Xie G, Peng Y. Effects of pre-wetting time on surface topography and floatability of lignite particles. POWDER TECHNOL 2020. [DOI: 10.1016/j.powtec.2019.10.049] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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39
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Eskanlou A, Chegeni MH, Khalesi MR, Abdollahy M, Huang Q. Modeling the bubble loading based on force balance on the particles attached to the bubble. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.123892] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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40
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Zhu SJ, Liu RZ, Wang T, Niu YJ, Lu HF, Chen XL. Impact Behavior of Hydrophilic Micron Particles on a Planar Gas-Liquid Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:15017-15028. [PMID: 31638399 DOI: 10.1021/acs.langmuir.9b02657] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The behavior of hydrophilic micron particles impacting on the gas-liquid interface has been further experimentally studied using a high-speed camera at different surface tensions and dynamic viscosities of liquids. The results show that the impact behavior exhibits suspension and submergence modes, whose boundary cannot be clearly identified because the overlap between the impact velocity ranges occurs because of the unstable pinning of the three-phase contact line on the surface of hydrophilic particles. The liquid properties have little effect on the wettability of hydrophilic particles but greatly influence the hydrodynamic and capillary force exerted on the particles, leading to the expansion of the suspension mode range. In addition, the penetration probability changes little with the decrease in surface tension, while it significantly reduces with the increase in dynamic viscosity. A penetration probability model is predicted as an exponential function of the inertial and supporting forces, and the experimental values agree well with the predicted values. The outcomes of this research will be helpful for understanding the mechanism of particle-interface interaction and providing guidance for enhancing the separation of hydrophilic fine ash via a bubble scrubbing system.
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Affiliation(s)
- Shi-Jie Zhu
- Shanghai Engineering Research Center of Coal Gasification , East China University of Science and Technology , Shanghai 200237 , China
| | - Run-Zhe Liu
- Shanghai Engineering Research Center of Coal Gasification , East China University of Science and Technology , Shanghai 200237 , China
| | - Tian Wang
- Shanghai Engineering Research Center of Coal Gasification , East China University of Science and Technology , Shanghai 200237 , China
| | - Yong-Jian Niu
- Shanghai Engineering Research Center of Coal Gasification , East China University of Science and Technology , Shanghai 200237 , China
| | - Hai-Feng Lu
- Shanghai Engineering Research Center of Coal Gasification , East China University of Science and Technology , Shanghai 200237 , China
| | - Xue-Li Chen
- Shanghai Engineering Research Center of Coal Gasification , East China University of Science and Technology , Shanghai 200237 , China
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41
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Shi H, Li M, Nikrityuk P, Liu Q. Experimental and numerical study of cavitation flows in venturi tubes: From CFD to an empirical model. Chem Eng Sci 2019. [DOI: 10.1016/j.ces.2019.07.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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42
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Role of mineral flotation technology in improving bitumen extraction from mined Athabasca oil sands—II. Flotation hydrodynamics of water‐based oil sand extraction. CAN J CHEM ENG 2019. [DOI: 10.1002/cjce.23598] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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43
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Agi A, Junin R, Alqatta AYM, Gbadamosi A, Yahya A, Abbas A. Ultrasonic assisted ultrafiltration process for emulsification of oil field produced water treatment. ULTRASONICS SONOCHEMISTRY 2019; 51:214-222. [PMID: 30401623 DOI: 10.1016/j.ultsonch.2018.10.023] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 10/13/2018] [Accepted: 10/15/2018] [Indexed: 05/27/2023]
Abstract
Ultrafiltration has been proven to be very effective in the treatment of oil-in-water emulsions, since no chemical additives are required. However, ultrafiltration has its limitations, the main limits are concentration polarization resulting to permeate flux decline with time. Adsorption, accumulation of oil and particles on the membrane surface which causes fouling of the membrane. Studies have shown that the ultrasonic is effective in cleaning of fouled membrane and enhancing membrane filtration performance. But the effectiveness also, depends on the selection of appropriate membrane material, membrane geometry, ultrasonic module design, operational and processing condition. In this study, a hollow and flat-sheet polyurethane (PU) membranes synthesized with different additives and solvent were used and their performance evaluated with oil-in-water emulsion. The steady-state permeate flux and the rejection of oil in percentage (%) at two different modes were determined. A dry/wet spinning technique was used to fabricate the flat-sheet and hollow fibre membrane (HFMs) using Polyethersulfone (PES) polymer base, Polyvinylpyrrolidone (PVP) additive and N, N-Dimethylacetamide (DMAc) solvent. Ultrasonic assisted cross-flow ultrafiltration module was built to avoid loss of ultrasonic to the surrounding. The polyurethane (PU) was synthesized by polymerization and sulphonation to have an anionic group (-OH; -COOH; and -SO3H) on the membrane surface. Changes in morphological properties of the membrane had a significant effect on the permeate flow rate and oil removal. Generation of cavitation and Brownian motion by the ultrasonic were the dominant mechanisms responsible for ultrafiltration by cracking the cake layers and reducing concentration polarization at the membrane surface. The percentage of oil after ultrafiltration process with ultrasonic is about 90% compared to 49% without ultrasonic. Ultrasonic is effective in enhancing the membrane permeate flux and controlling membrane fouling.
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Affiliation(s)
- Augustine Agi
- Department of Petroleum Engineering, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia
| | - Radzuan Junin
- Department of Petroleum Engineering, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia; Institute for Oil and Gas, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia.
| | - Amr Yahya Mohd Alqatta
- Department of Petroleum Engineering, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia
| | - Afeez Gbadamosi
- Department of Petroleum Engineering, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia
| | - Asma Yahya
- Department of Petroleum Engineering, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia
| | - Azza Abbas
- Department of Petroleum Engineering, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia
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44
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Ran JC, Qiu XY, Hu Z, Liu QJ, Song BX, Yao YQ. Effects of particle size on flotation performance in the separation of copper, gold and lead. POWDER TECHNOL 2019. [DOI: 10.1016/j.powtec.2018.12.045] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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45
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Özün S, Ergen G. Determination of Optimum Parameters for Flotation of Galena: Effect of Chain Length and Chain Structure of Xanthates on Flotation Recovery. ACS OMEGA 2019; 4:1516-1524. [PMID: 31459415 PMCID: PMC6648057 DOI: 10.1021/acsomega.8b02841] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 01/02/2019] [Indexed: 05/26/2023]
Abstract
The structure of the xanthates' hydrocarbon (C-H) chain is one of the major factors which affect flotation recovery. The effectiveness and the collecting power of xanthates increase with increasing chain length and vary depending on the chain structure: branched and straight chains. In this regard, the influences of length (2-5 carbon) and structure (straight: normal and branched: iso) of xanthate's hydrocarbon chain on flotation recovery of galena were investigated under different experimental conditions: xanthate concentration, conditioning time, air flow rate (AFR), and air bubble size. Because of the steric effects of the chain structure, the branched chain xanthates gave lower flotation recoveries with shorter conditioning times compared to those with straight chain xanthates. Over-conditioning with straight chain xanthates resulted in hydrophobic aggregation of galena particles which resulted in the detachment of galena particles from air bubbles due to increasing weight, leading to lower flotation recoveries. In the case of flotation with different AFRs, the flotation recoveries increased with increasing AFR to 7 lph and further increase in AFR (10 lph) negatively affected the flotation recoveries when particles had insufficient hydrophobic surfaces. The maximum flotation recoveries were obtained with the addition of MIBC (methyl isobutyl carbinol) as a frother; the size of the air bubbles deceased with increasing MIBC concentration which increased higher encounter/collision probability of air bubbles with galena particles, resulting in higher flotation recoveries.
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Affiliation(s)
- Savaş Özün
- Department
of Metallurgical Engineering, The University
of Utah, Salt Lake City, Utah 84112-0114, United States
- Department
of Mining Engineering, Süleyman Demirel
University, Isparta 32260, Turkey
| | - Gülşah Ergen
- Department
of Mining Engineering, Süleyman Demirel
University, Isparta 32260, Turkey
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46
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Michailidi ED, Bomis G, Varoutoglou A, Efthimiadou EK, Mitropoulos AC, Favvas EP. Fundamentals and applications of nanobubbles. ADVANCED LOW-COST SEPARATION TECHNIQUES IN INTERFACE SCIENCE 2019. [DOI: 10.1016/b978-0-12-814178-6.00004-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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47
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Eskanlou A, Khalesi MR, Mirmogaddam M, Hemmati Chegeni M, Vaziri Hassas B. Investigation of trajectory and rise velocity of loaded and bare single bubbles in flotation process using video processing technique. SEP SCI TECHNOL 2018. [DOI: 10.1080/01496395.2018.1539104] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Amir Eskanlou
- Department of Mining Engineering, Tarbiat Modares University, Tehran, Iran
| | | | | | | | - Behzad Vaziri Hassas
- Department of Energy and Mineral Engineering, College of Earth and Mineral Sciences, Pennsylvania State University, University Park, PA, USA
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Liu F, Liu HQ, Wei GX, Zhang R, Liu GS, Zhou JH, Zeng TT. Detoxification of medical waste incinerator fly ash through successive flotation. SEP SCI TECHNOL 2018. [DOI: 10.1080/01496395.2018.1481091] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Fang Liu
- School of Energy and Safety Engineering, Tianjin Chengjian University, Tianjin, China
| | - Han-Qiao Liu
- School of Energy and Safety Engineering, Tianjin Chengjian University, Tianjin, China
| | - Guo-Xia Wei
- School of Science, Tianjin Chengjian University, Tianjin, China
| | - Rui Zhang
- School of Energy and Safety Engineering, Tianjin Chengjian University, Tianjin, China
| | - Gui-Sheng Liu
- School of Energy and Safety Engineering, Tianjin Chengjian University, Tianjin, China
| | - Jian-Hua Zhou
- School of Energy and Safety Engineering, Tianjin Chengjian University, Tianjin, China
| | - Tong-Tong Zeng
- School of Energy and Safety Engineering, Tianjin Chengjian University, Tianjin, China
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Li W, Zhang J, Xue Z, Wang J, Jiang L. Spontaneous and Directional Bubble Transport on Porous Copper Wires with Complex Shapes in Aqueous Media. ACS APPLIED MATERIALS & INTERFACES 2018; 10:3076-3081. [PMID: 29294280 DOI: 10.1021/acsami.7b15681] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Manipulation of gas bubble behaviors is crucial for gas bubble-related applications. Generally, the manipulation of gas bubble behaviors generally takes advantage of their buoyancy force. It is very difficult to control the transportation of gas bubbles in a specific direction. Several approaches have been developed to collect and transport bubbles in aqueous media; however, most reliable and effective manipulation of gas bubbles in aqueous media occurs on the interfaces with simple shapes (i.e., cylinder and cone shapes). Reliable strategies for spontaneous and directional transport of gas bubbles on interfaces with complex shapes remain enormously challenging. Herein, a type of 3D gradient porous network was constructed on copper wire interfaces, with rectangle, wave, and helix shapes. The superhydrophobic copper wires were immersed in water, and continuous and stable gas films then formed on the interfaces. With the assistance of the Laplace pressure gradient between two bubbles, gas bubbles (including microscopic gas bubbles) in the aqueous media were subsequently transported, continuously and directionally, on the copper wires with complex shapes. The small gas bubbles always moved to the larger ones.
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Affiliation(s)
- Wenjing Li
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University , Beijing 100191, P. R. China
| | - Jingjing Zhang
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University , Beijing 100191, P. R. China
| | - Zhongxin Xue
- School of Chemistry and Materials Science, Ludong University , Yantai 264025, P. R. China
| | - Jingming Wang
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University , Beijing 100191, P. R. China
| | - Lei Jiang
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University , Beijing 100191, P. R. China
- Laboratory of Bio-inspired Smart Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Science , Beijing 100190, P. R. China
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