Air Purification Study Based on the Adhesion Effect between Low-Curvature Liquid Surfaces and Air Convection Friction
Rapid urbanization and industrialization have heightened concerns about air quality worldwide. Conventional air purification methods, reliant on chemicals or energy-intensive processes, fall short in open spaces and in combating emerging pollutants. Addressing these limitations, this study presents...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-12-01
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| Series: | Atmosphere |
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| Online Access: | https://www.mdpi.com/2073-4433/14/12/1831 |
| _version_ | 1797382035883425792 |
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| author | Haotian Weng Yaozhong Zhang Xiaolu Huang Hewei Yuan Yafei Zhang |
| author_facet | Haotian Weng Yaozhong Zhang Xiaolu Huang Hewei Yuan Yafei Zhang |
| author_sort | Haotian Weng |
| collection | DOAJ |
| description | Rapid urbanization and industrialization have heightened concerns about air quality worldwide. Conventional air purification methods, reliant on chemicals or energy-intensive processes, fall short in open spaces and in combating emerging pollutants. Addressing these limitations, this study presents a novel water-film air purification prototype leveraging the adhesion between low-curvature liquid surfaces and air convection friction. Uniquely designed, this prototype effectively targets toxic gases (e.g., formaldehyde, SO<sub>2</sub>, NO<sub>2</sub>) and particulate matter (such as PM<sub>2.5</sub>) while allowing continuous airflow. This research explores the adhesion and sedimentation capabilities of a low-curvature water solution surface under convection friction, reducing the surface energy to remove airborne pollutants efficiently. The prototype was able to reduce the initial concentration in a 30 m³ chamber within 180 min by 91% for formaldehyde, 78% for nitrogen dioxide (NO<sub>2</sub>), 99% for sulfur dioxide (SO<sub>2</sub>), and 96% for PM<sub>2.5</sub>. Experimentally validated indicators—decay constants, CADR, and purification efficiency—enable a comprehensive evaluation of the purification device, demonstrating its efficacy in mitigating air pollution. This innovative design, which is cost-effective due to its use of easily accessible components and water as the primary medium, indicates strong potential for large-scale deployment. This study points to an environmentally friendly and economical approach to air purification, shedding light on a promising direction for enhancing indoor air quality. Further optimization and exploration of diverse pollutants and environmental conditions will propel the practical applications of this pioneering technology. |
| first_indexed | 2024-03-08T21:00:34Z |
| format | Article |
| id | doaj.art-628db56fc00540d1bce9d7cec7726c5e |
| institution | Directory Open Access Journal |
| issn | 2073-4433 |
| language | English |
| last_indexed | 2024-03-08T21:00:34Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atmosphere |
| spelling | doaj.art-628db56fc00540d1bce9d7cec7726c5e2023-12-22T13:53:00ZengMDPI AGAtmosphere2073-44332023-12-011412183110.3390/atmos14121831Air Purification Study Based on the Adhesion Effect between Low-Curvature Liquid Surfaces and Air Convection FrictionHaotian Weng0Yaozhong Zhang1Xiaolu Huang2Hewei Yuan3Yafei Zhang4Key Laboratory for Thin Film and Microfabrication of Ministry of Education, Research Institute of Micro/Nano Science and Technology, Shanghai Jiao Tong University, Shanghai 200240, ChinaShanghai Key Laboratory for High Temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaKey Laboratory for Thin Film and Microfabrication of Ministry of Education, Research Institute of Micro/Nano Science and Technology, Shanghai Jiao Tong University, Shanghai 200240, ChinaKey Laboratory for Thin Film and Microfabrication of Ministry of Education, Research Institute of Micro/Nano Science and Technology, Shanghai Jiao Tong University, Shanghai 200240, ChinaKey Laboratory for Thin Film and Microfabrication of Ministry of Education, Research Institute of Micro/Nano Science and Technology, Shanghai Jiao Tong University, Shanghai 200240, ChinaRapid urbanization and industrialization have heightened concerns about air quality worldwide. Conventional air purification methods, reliant on chemicals or energy-intensive processes, fall short in open spaces and in combating emerging pollutants. Addressing these limitations, this study presents a novel water-film air purification prototype leveraging the adhesion between low-curvature liquid surfaces and air convection friction. Uniquely designed, this prototype effectively targets toxic gases (e.g., formaldehyde, SO<sub>2</sub>, NO<sub>2</sub>) and particulate matter (such as PM<sub>2.5</sub>) while allowing continuous airflow. This research explores the adhesion and sedimentation capabilities of a low-curvature water solution surface under convection friction, reducing the surface energy to remove airborne pollutants efficiently. The prototype was able to reduce the initial concentration in a 30 m³ chamber within 180 min by 91% for formaldehyde, 78% for nitrogen dioxide (NO<sub>2</sub>), 99% for sulfur dioxide (SO<sub>2</sub>), and 96% for PM<sub>2.5</sub>. Experimentally validated indicators—decay constants, CADR, and purification efficiency—enable a comprehensive evaluation of the purification device, demonstrating its efficacy in mitigating air pollution. This innovative design, which is cost-effective due to its use of easily accessible components and water as the primary medium, indicates strong potential for large-scale deployment. This study points to an environmentally friendly and economical approach to air purification, shedding light on a promising direction for enhancing indoor air quality. Further optimization and exploration of diverse pollutants and environmental conditions will propel the practical applications of this pioneering technology.https://www.mdpi.com/2073-4433/14/12/1831air purificationliquid surfaceconvection frictionharmful pollutantswater film |
| spellingShingle | Haotian Weng Yaozhong Zhang Xiaolu Huang Hewei Yuan Yafei Zhang Air Purification Study Based on the Adhesion Effect between Low-Curvature Liquid Surfaces and Air Convection Friction Atmosphere air purification liquid surface convection friction harmful pollutants water film |
| title | Air Purification Study Based on the Adhesion Effect between Low-Curvature Liquid Surfaces and Air Convection Friction |
| title_full | Air Purification Study Based on the Adhesion Effect between Low-Curvature Liquid Surfaces and Air Convection Friction |
| title_fullStr | Air Purification Study Based on the Adhesion Effect between Low-Curvature Liquid Surfaces and Air Convection Friction |
| title_full_unstemmed | Air Purification Study Based on the Adhesion Effect between Low-Curvature Liquid Surfaces and Air Convection Friction |
| title_short | Air Purification Study Based on the Adhesion Effect between Low-Curvature Liquid Surfaces and Air Convection Friction |
| title_sort | air purification study based on the adhesion effect between low curvature liquid surfaces and air convection friction |
| topic | air purification liquid surface convection friction harmful pollutants water film |
| url | https://www.mdpi.com/2073-4433/14/12/1831 |
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