Jianfeng Ye, Zhihao Zhu, Zhaofeng Song, Huiting Xu, Tianchen Xu, Hui Liu
{"title":"应用微气泡气浮收获农业废水中的微囊藻:调节和机制","authors":"Jianfeng Ye, Zhihao Zhu, Zhaofeng Song, Huiting Xu, Tianchen Xu, Hui Liu","doi":"10.1002/bit.28836","DOIUrl":null,"url":null,"abstract":"<p>The harvesting of microalgae is the main bottleneck of its large-scale biomass production, and seeking an efficient, green, and low-cost microalgae harvesting technology is one of the urgent problems to be solved. Microbubble air flotation has been proven to be an effective measure, but the mechanisms of microbubbles-algal cell attachment are still unclear. In this study, microbubble air flotation was used as a harvesting method for <i>Microcystis</i> cultured in agricultural wastewater. The process mechanism of microbubble air flotation harvesting microalgae in wastewater was fully revealed from three aspects (the design of bubble formation, the adhesion law, and the recovery rate of microalgae under different working conditions). The results show that the length of the release pipe is the main factor affecting the proportion of microbubbles with a particle size of less than 50 μm. In the process of adhesion, when the particle size of microbubbles is 0.6–1.7 times the size of <i>Microcystis</i>, the adhesion efficiency of microbubbles to <i>Microcystis</i> is the highest. Under the conditions of pressure 0.45 MPa, gas–liquid ratio 5%, and release pipe length 100 cm, the harvesting performance of <i>Microcystis</i> was the best. Microbubble air flotation has better harvesting performance (63.5%, collection rate) of <i>Microcystis</i> with higher density. By understanding the mechanism of microbubble flotation, the technical parameters of microbubble flotation for harvesting energy microalgae are optimized to provide support for the development of efficient and low-cost devices and equipment for collecting microalgae.</p>","PeriodicalId":9168,"journal":{"name":"Biotechnology and Bioengineering","volume":"121 12","pages":"3742-3753"},"PeriodicalIF":3.5000,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Application of microbubble air flotation to harvest Microcystis sp. from agriculture wastewater: The regulation and mechanisms\",\"authors\":\"Jianfeng Ye, Zhihao Zhu, Zhaofeng Song, Huiting Xu, Tianchen Xu, Hui Liu\",\"doi\":\"10.1002/bit.28836\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The harvesting of microalgae is the main bottleneck of its large-scale biomass production, and seeking an efficient, green, and low-cost microalgae harvesting technology is one of the urgent problems to be solved. Microbubble air flotation has been proven to be an effective measure, but the mechanisms of microbubbles-algal cell attachment are still unclear. In this study, microbubble air flotation was used as a harvesting method for <i>Microcystis</i> cultured in agricultural wastewater. The process mechanism of microbubble air flotation harvesting microalgae in wastewater was fully revealed from three aspects (the design of bubble formation, the adhesion law, and the recovery rate of microalgae under different working conditions). The results show that the length of the release pipe is the main factor affecting the proportion of microbubbles with a particle size of less than 50 μm. In the process of adhesion, when the particle size of microbubbles is 0.6–1.7 times the size of <i>Microcystis</i>, the adhesion efficiency of microbubbles to <i>Microcystis</i> is the highest. Under the conditions of pressure 0.45 MPa, gas–liquid ratio 5%, and release pipe length 100 cm, the harvesting performance of <i>Microcystis</i> was the best. Microbubble air flotation has better harvesting performance (63.5%, collection rate) of <i>Microcystis</i> with higher density. By understanding the mechanism of microbubble flotation, the technical parameters of microbubble flotation for harvesting energy microalgae are optimized to provide support for the development of efficient and low-cost devices and equipment for collecting microalgae.</p>\",\"PeriodicalId\":9168,\"journal\":{\"name\":\"Biotechnology and Bioengineering\",\"volume\":\"121 12\",\"pages\":\"3742-3753\"},\"PeriodicalIF\":3.5000,\"publicationDate\":\"2024-09-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Biotechnology and Bioengineering\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/bit.28836\",\"RegionNum\":2,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"BIOTECHNOLOGY & APPLIED MICROBIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biotechnology and Bioengineering","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/bit.28836","RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"BIOTECHNOLOGY & APPLIED MICROBIOLOGY","Score":null,"Total":0}
Application of microbubble air flotation to harvest Microcystis sp. from agriculture wastewater: The regulation and mechanisms
The harvesting of microalgae is the main bottleneck of its large-scale biomass production, and seeking an efficient, green, and low-cost microalgae harvesting technology is one of the urgent problems to be solved. Microbubble air flotation has been proven to be an effective measure, but the mechanisms of microbubbles-algal cell attachment are still unclear. In this study, microbubble air flotation was used as a harvesting method for Microcystis cultured in agricultural wastewater. The process mechanism of microbubble air flotation harvesting microalgae in wastewater was fully revealed from three aspects (the design of bubble formation, the adhesion law, and the recovery rate of microalgae under different working conditions). The results show that the length of the release pipe is the main factor affecting the proportion of microbubbles with a particle size of less than 50 μm. In the process of adhesion, when the particle size of microbubbles is 0.6–1.7 times the size of Microcystis, the adhesion efficiency of microbubbles to Microcystis is the highest. Under the conditions of pressure 0.45 MPa, gas–liquid ratio 5%, and release pipe length 100 cm, the harvesting performance of Microcystis was the best. Microbubble air flotation has better harvesting performance (63.5%, collection rate) of Microcystis with higher density. By understanding the mechanism of microbubble flotation, the technical parameters of microbubble flotation for harvesting energy microalgae are optimized to provide support for the development of efficient and low-cost devices and equipment for collecting microalgae.
期刊介绍:
Biotechnology & Bioengineering publishes Perspectives, Articles, Reviews, Mini-Reviews, and Communications to the Editor that embrace all aspects of biotechnology. These include:
-Enzyme systems and their applications, including enzyme reactors, purification, and applied aspects of protein engineering
-Animal-cell biotechnology, including media development
-Applied aspects of cellular physiology, metabolism, and energetics
-Biocatalysis and applied enzymology, including enzyme reactors, protein engineering, and nanobiotechnology
-Biothermodynamics
-Biofuels, including biomass and renewable resource engineering
-Biomaterials, including delivery systems and materials for tissue engineering
-Bioprocess engineering, including kinetics and modeling of biological systems, transport phenomena in bioreactors, bioreactor design, monitoring, and control
-Biosensors and instrumentation
-Computational and systems biology, including bioinformatics and genomic/proteomic studies
-Environmental biotechnology, including biofilms, algal systems, and bioremediation
-Metabolic and cellular engineering
-Plant-cell biotechnology
-Spectroscopic and other analytical techniques for biotechnological applications
-Synthetic biology
-Tissue engineering, stem-cell bioengineering, regenerative medicine, gene therapy and delivery systems
The editors will consider papers for publication based on novelty, their immediate or future impact on biotechnological processes, and their contribution to the advancement of biochemical engineering science. Submission of papers dealing with routine aspects of bioprocessing, description of established equipment, and routine applications of established methodologies (e.g., control strategies, modeling, experimental methods) is discouraged. Theoretical papers will be judged based on the novelty of the approach and their potential impact, or on their novel capability to predict and elucidate experimental observations.