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Journal articles on the topic 'Air, Purification of'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Zaleska, Adriana, Andreas Hanel, and Michal Nischk. "Photocatalytic Air Purification." Recent Patents on Engineering 4, no. 3 (November 1, 2010): 200–216. http://dx.doi.org/10.2174/187221210794578637.

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2

OGUCHI, Mitsuo. "Air Purification in Space." Journal of the Society of Mechanical Engineers 113, no. 1102 (2010): 716–17. http://dx.doi.org/10.1299/jsmemag.113.1102_716.

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3

KURIYANO, Nobuki. "Air purification using photocatalytic technology." Journal of Japan Association on Odor Environment 44, no. 3 (2013): 192–200. http://dx.doi.org/10.2171/jao.44.192.

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4

Liu, Jianqing, Tao Jiang, Xiaohui Li, and Zhong Lin Wang. "Triboelectric filtering for air purification." Nanotechnology 30, no. 29 (April 25, 2019): 292001. http://dx.doi.org/10.1088/1361-6528/ab0e34.

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5

Rodriguez Andrade, Jonathan, Ernst Kussul, and Tetyana Baydyk. "Microchannel filter for air purification." Open Physics 18, no. 1 (June 24, 2020): 241–54. http://dx.doi.org/10.1515/phys-2020-0153.

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AbstractIn this study, we propose a new design for a microchannel filter. The closed indoor environments with which we interact daily are sources of diseases for the respiratory system of human beings. Recommendations for the design of microchannel filters for indoor air purification are proposed, implementing low-cost microequipment technology (MET) for the manufacture of the elements that constitute a microfiltration system. For the microchannel filter production, we proposed to use MET, which is a miniaturization technology and can reduce manufacturing costs. The microchannel filter was 3.75 cm in radius with a thickness of 3 mm. It had a triangular profile and a helical trajectory. It was designed, manufactured, and tested for two profile dimensions. The main purpose was to reduce the pressure drop of the air flow through the filter. We described the air flow simulation for the microchannel filter using SolidWorks. A prototype microchannel filter was constructed, which underwent manufacturing tests. It is possible to clean the microchannel using water flow, which allows us to maintain the filtration quality within an optimum range of contaminant removal.

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6

Wu, Mengjie, and Kun Liu. "Air purification in confined spaces." IOP Conference Series: Earth and Environmental Science 446 (March 21, 2020): 032072. http://dx.doi.org/10.1088/1755-1315/446/3/032072.

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7

Pham, Hai Dinh, Mahider Asmare Tekalgne, Ha Huu Do, Van-Huy Nguyen, Dai-Viet N. Vo, Chin Kui Cheng, Mohammadreza Shokouhimehr, et al. "Emerging photocatalysts for air purification." Materials Letters 288 (April 2021): 129355. http://dx.doi.org/10.1016/j.matlet.2021.129355.

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8

Staszowska, Amelia. "Air Purification in Sustainable Buildings." Problemy Ekorozwoju 15, no. 2 (July 1, 2020): 245–52. http://dx.doi.org/10.35784/pe.2020.2.24.

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This paper concerns the issue of indoor air purification techniques in sustainable public buildings and the residential sector. One of the requirements of sustainable construction is to reduce the energy costs, minimize waste, improve the well-being of users and create green space. The most important certification systems for green (ecological) buildings such as LEED or BREEAM also include the assessment of the indoor environment in terms of the air quality, noise level, building acoustics and energy consumption. Traditional air treatment and purification systems require the use of numerous devices, air transport systems, which are energy-consuming. It is necessary to clean or replace the working elements periodically. The alternative is biophilic installations (green walls) based on the natural properties of plants for removing gaseous pollutants, particulate matter and even bioaerosols from the air. Plants improve humidity, regulate the carbon dioxide concentration, ionize the air and suppress noise. However, the processes of photocatalytic degradation of gaseous compounds are a very promising method of removing impurities, due to low costs, mild process conditions (temperature and pressure) and the possibility of complete mineralization of impurities.

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9

Hu, Cheng Zhen, Yan Nan Cai, Jiang Wu, Bi Chen Yan, Xue Jun Qiu, Hai Ting He, Liu Liu Zhang, and Yue Yu. "Study on Photocatalytic Technology with Photovoltaic-Thermal Integration and its Applications in Indoor Air Purification." Advanced Materials Research 864-867 (December 2013): 1360–63. http://dx.doi.org/10.4028/www.scientific.net/amr.864-867.1360.

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In terms of energy and environmental purification, application of photocatalytic purification in energy and environment is getting increasingly widespread. In the present paper, it focused on the applications of photocatalytic technology in indoor air purification. Photocatalyst and photocatalytic reaction devices are the two issues in photocatalytic air purification. Fe-La co-doped TiO2 was prepared, and integration of photovoltaic-thermal circular photocatalytic air purification reactor was designed, which showed high air purification efficiency. The experimental data and theoretical analysis gave the support to exploit new indoor air purification technologies. Further, technical and economic analysis on photocatalysis technology with photovoltaic-thermal integration applying in indoor air purification was studied and helpful results were attained.

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10

Wicaksono, Budi, Tommy Iduwin, Devita Mayasari, Pratiwi Setyaning Putri, and Tri Yuhanah. "Edukasi Alat Penjernih Air Sederhana Sebagai Upaya Pemenuhan Kebutuhan Air Bersih." TERANG 2, no. 1 (December 16, 2019): 43–52. http://dx.doi.org/10.33322/terang.v2i1.536.

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Water is source of life on earth. The largest water body is in the ocean at 97 percent and 3 percent remaining is fresh water which is used to support daily needs, so clean water is a basic human need. The limited amount of water and increasing people number caused a clean water crisis. Apart from the amount, the quality of fresh water is getting worse. The struggle to use clean water for various uses and clean water wasteful behavior had resulted in the loss of adequate access of clean water for some people. One of the ways to improve clean water quality and quantity is conducting a water purification process. Water purification can be done using simple tools with filtration techniques. Through the Community Partnership Program’s theme "Education of Simple Water Purification as an Effort to Fulfill Clean Water Needs" able to provide knowledge and understanding to teachers and students of MTs Nurul Qur'an Jakarta as activity partners.

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11

Liu, Shurong. "Research on Performance of Automotive Air Conditioning Filter." E3S Web of Conferences 248 (2021): 01057. http://dx.doi.org/10.1051/e3sconf/202124801057.

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Explains the main sources and types of air pollutants in automobiles, and introduces methods to evaluate the effect of automobile air filters on the purification of the above-mentioned automobile air pollutants, and the purification effects of existing automobile air filter products on the market Evaluate and discuss its purification level to provide a theoretical basis for the future formulation of relevant specifications.

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12

Wen, Li Mei. "Design of Automatic Air Purification Device." Applied Mechanics and Materials 644-650 (September 2014): 158–61. http://dx.doi.org/10.4028/www.scientific.net/amm.644-650.158.

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In daily life because of polluted air people have a headache, insomnia, allergic diseases, respiratory diseases, etc. Air Purifier is also called "air cleaner" or "air sober machine". It refers to an equipment which can adsorb, decompose or transform all kinds of air pollutions,and volatilize an anion to improve the indoor air quality. In order to achieve the purpose of the microcomputer digital control of system, air purifier is designed with a single chip to reduce the artificial control. The single chip microcomputer is regarded as the core circuit part of the whole control system, the function of which is control all components of the air purification. Air purifier equipment consists of dust sensors, anion generator unit, fan module components and 4x4 matrix keyboard. Software program mainly includes: the display program, keyboard program, the clock program. This design aims at starting subsequent circuit module automatically through real-time control of air quality, achieving the function of air purification.

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13

Albertini, R., P. Ciancianaini, S. Pinelli, P. Lunghi, E. Ridolo, and P. Dall'aglio. "Air purification and indoor biologic pollutants." Allergy 55, no. 8 (August 2000): 780–81. http://dx.doi.org/10.1034/j.1398-9995.2000.00648.x.

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14

Tudose, I. V., and M. Suchea. "ZnO for photocatalytic air purification applications." IOP Conference Series: Materials Science and Engineering 133 (June 2016): 012040. http://dx.doi.org/10.1088/1757-899x/133/1/012040.

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15

Vershinin, N. N., I. L. Balikhin, V. A. Bakaev, V. I. Berestenko, O. N. Efimov, E. N. Kabachkov, and E. N. Kurkin. "Nanocatalysts for photocatalytic air purification systems." Russian Chemical Bulletin 66, no. 4 (April 2017): 648–51. http://dx.doi.org/10.1007/s11172-017-1786-8.

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16

Ramos, Ventura Castillo, Wei Han, Xiangping Zhang, Suojiang Zhang, and King Lun Yeung. "Supported ionic liquids for air purification." Current Opinion in Green and Sustainable Chemistry 25 (October 2020): 100391. http://dx.doi.org/10.1016/j.cogsc.2020.100391.

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17

Lifanteva, Anna, Alsu Yusupova, and Galina Medvedeva. "Air purification from process emissions from electroplating baths." E3S Web of Conferences 274 (2021): 08011. http://dx.doi.org/10.1051/e3sconf/202127408011.

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Electroplating technology is an important technological process at production facilities of various profiles. The electroplating baths are a source of hazardous emissions of toxic vapors and aerosols. In factories with electroplating sites, the crucial task is to eliminate hazardous emissions by applying an effective exhaust ventilation and air purification system for subsequent air discharge into the atmosphere. In this article two basic schemes for cleaning process emissions from electroplating baths were developed: a scheme with purification in scrubbers; a scheme with purification in scrubbers with pre-filtration. The advantages and disadvantages of each scheme were considered. Based on the amount of hazardous emissions and their dispersed composition, the purification efficiency of each scheme was calculated using the probabilistic method. In view of the calculations, a scheme for cleaning process emissions from the electroplating line with the highest purification efficiency has been identified.

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18

Wang, Yun Han, Hao Wang, Chang Zhong Zhao, and Yi Zhang. "Research Progress of Air Purifier Principles and Material Technologies." Advanced Materials Research 1092-1093 (March 2015): 1025–28. http://dx.doi.org/10.4028/www.scientific.net/amr.1092-1093.1025.

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This article mainly refers to purification technology and material technology of air purifiers. There are several purification technologies in air purifiers such as HEPA(high efficiency particulate air filter), Mineralization technology of ultra light structure, Negative ion technology, the photocatalyst technology, electrostatic dust collection, Activated carbon adsorption technology and etc. And material technologies are classified as Photocatalyst, Activated carbon, Synthetic fiber, HEPA, Negative ion generator and etc. The paper reviews the characteristics, purification theory, research status and applications of every kind of purification technologies and material technologies. On this basis, we put forward outlook on the future development of air purifier.

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19

Chen, Xiao Song, Jing Xian Liu, De Qiang Chang, Ning Mao, and Xi Sun. "Research on Air Purification Performance of Typical Filter Media." Advanced Materials Research 894 (February 2014): 271–74. http://dx.doi.org/10.4028/www.scientific.net/amr.894.271.

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Filter media is designed for industrial dust removal, but in some industrial sites, it is mainly used for air purification. So in the paper, we study air purification performance of typical filter media, including filtration efficiency, resistance, and stage efficiency. The experimental results show that wind velocity has a little effect on filtration efficiency for particulate matter in air. Besides, this paper compares the air purification performance of different filter media.

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20

Zhuo, Yu Guo, Jun Liu, and Yu Chun Zhang. "Research on Indoor Air Pollution Controll in China." Advanced Materials Research 599 (November 2012): 525–28. http://dx.doi.org/10.4028/www.scientific.net/amr.599.525.

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According to present status in China to controll indoor air pollution should go on from six aspects that are temperature, relative humidity, ventilation, selecting material, purification technology and plant purification. The higher the temperature and relative humidity is, the easier indoor air pollutants are released. Ventilation and selecting material is an efficient way to controll indoor air pollution. Plant purification is a good way to improve the living environment.

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21

Woźniak, Arkadiusz. "Breathing Air Purification for Hyperbaric Purposes, Part II." Polish Hyperbaric Research 50, no. 1 (March 1, 2015): 20–29. http://dx.doi.org/10.1515/phr-2015-0003.

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Abstract Determining the efficiency of breathing air purification for hyperbaric purposes with the use of filtration systems is of a crucial importance. However, when the Polish Navy took samples of breathing air from their own filtration plant for quality purposes, these were found to not meet the required standard. The identification of this problem imposed the need to undertake actions aimed at the elimination of the identified disruptions in the process of breathing air production, with the objective of assuring its proper quality. This study presents the results of the initial tests on the air supply sources utilised by the Polish Navy, which were carried out for the purpose of setting a proper direction of future works and implementing corrective measures in order to optimise the breathing air production process. The obtained test results will be used in a subsequent publication devoted to the assessment of the level of efficiency of air purification with the use of a multifaceted approach consisting in the utilisation of various types of air supply sources and different configurations of purification systems.

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22

Shvartsburg, L. E., and А. S. Vikharev. "Performance Management of Local Air Purification Systems." Ecology and Industry of Russia 21, no. 1 (January 1, 2017): 4–7. http://dx.doi.org/10.18412/1816-0395-2017-1-4-7.

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23

Hay, Stephen, Timothy Obee, Zhu Luo, Ting Jiang, Yongtao Meng, Junkai He, Steven Murphy, and Steven Suib. "The Viability of Photocatalysis for Air Purification." Molecules 20, no. 1 (January 14, 2015): 1319–56. http://dx.doi.org/10.3390/molecules20011319.

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24

ZHDANOVA, Irina V., Anna A. KUZNETSOVA, and Nadezhda A. KALINKINA. "MODERN TRENDS OF AIR PURIFICATION USING SKYSCRAPERS." Urban construction and architecture 9, no. 3 (September 15, 2019): 135–42. http://dx.doi.org/10.17673/vestnik.2019.03.17.

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The article highlights the problem of air pollution in large cities. Sources of pollution and the most common pollutants have been identified. Examples of leading countries with the dirtiest air are given. The estimated indicators for the risks of disease and mortality are considered. The main factors causing air pollution have been identified. Ways to solve this problem using modern technologies are proposed. Analyzed are modern facilities in which innovative methods of combating air pollution are applied, and their implementation in real and conceptual design. The conclusion is drawn on the need for an integrated approach to this topic, uniting the efforts of all countries.

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25

Gamolich, V. Ya, A. G. Butenko, and S. Yu Smyk. "Probabilistic model for combined air purification system." Odes’kyi Politechnichnyi Universytet. Pratsi, no. 1 (June 10, 2014): 204–11. http://dx.doi.org/10.15276/opu.1.43.2014.35.

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26

Shimizu, Kazuo, Takeki Sugiyama, Manisha Nishamani L. S., and Masaki Kanamori. "Application of Micro Discharge for Air Purification." IEEJ Transactions on Power and Energy 127, no. 12 (2007): 1269–74. http://dx.doi.org/10.1541/ieejpes.127.1269.

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27

Gladij, M., V. Voloschuk, S. Smyslov, and L. Zasuha. "Purification of air on pig-rearing farms." Visnyk agrarnoi nauky 96, no. 11 (November 15, 2018): 93–99. http://dx.doi.org/10.31073/agrovisnyk201811-13.

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28

Larbot, André, Marielle Bertrand, Sonia Marre, and Eric Prouzet. "Performances of ceramic filters for air purification." Separation and Purification Technology 32, no. 1-3 (July 2003): 81–85. http://dx.doi.org/10.1016/s1383-5866(03)00062-5.

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29

Qiao, Chunzhen, Kai Ji, and Zhen Zhang. "Research progress of indoor air purification technology." IOP Conference Series: Earth and Environmental Science 474 (May 15, 2020): 052024. http://dx.doi.org/10.1088/1755-1315/474/5/052024.

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30

Rowe, Donald R., and William G. Lloyd. "The Catalytic Purification of CO-Rich Air." Journal of the Air & Waste Management Association 49, no. 3 (March 1999): 308–15. http://dx.doi.org/10.1080/10473289.1999.10463802.

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31

Birnie, M., S. Riffat, and M. Gillott. "Photocatalytic reactors: design for effective air purification." International Journal of Low-Carbon Technologies 1, no. 1 (January 1, 2006): 47–58. http://dx.doi.org/10.1093/ijlct/1.1.47.

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32

Ren, Hangjuan, Pramod Koshy, Wen-Fan Chen, Shaohua Qi, and Charles Christopher Sorrell. "Photocatalytic materials and technologies for air purification." Journal of Hazardous Materials 325 (March 2017): 340–66. http://dx.doi.org/10.1016/j.jhazmat.2016.08.072.

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33

Kim, Tae-Young, Yeong-Tae Cho, and Jae-Yong Kim. "Air Purification of Smoking Booth Using Photocatalytic Process and Air Filter." Applied Chemistry for Engineering 27, no. 4 (August 10, 2016): 433–38. http://dx.doi.org/10.14478/ace.2016.1059.

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34

Zhuo, Yu Guo, Jun Liu, Bi Qing Shi, and Yu Chun Zhang. "Development of Indoor Purification Materials in China." Applied Mechanics and Materials 274 (January 2013): 448–50. http://dx.doi.org/10.4028/www.scientific.net/amm.274.448.

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The common indoor air purification materials that are activated carbon, enzyme, and photocatalyst in China are introduced in this paper. The characteristics and present research states of typical air purification materials are reviewed. The composites will be the focus in the future.

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35

Suarez, Andres, Cesar Ruiz-Agudelo, Edisson Castro-Escobar, Gloria Y. Flórez-Yepes, and Luis A. Vargas-Marín. "On the Mismatches between the Monetary and Social Values of Air Purification in the Colombian Andean Region: A Case Study." Forests 12, no. 9 (September 17, 2021): 1274. http://dx.doi.org/10.3390/f12091274.

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There is growing interest in air quality and air purification, due to current high pollution levels, their effects on human health, and implications for urban economies. Since the improvement of air quality carries important economic value, air-related benefits have been evaluated monetarily from two perspectives: the first relates to air quality improvements, while the second values air purification as an ecosystem function. This research opted for the second perspective, given that the study area (two Colombian municipalities) does not suffer from poor air quality conditions, but stakeholders prioritized this function as highly important to them. Contingent valuation methods were applied in order to identify the population’s probability of willingness to maintain the air purification function. Although individuals (n = 245) attribute a yearly monetary value of USD 1.5 million to air purification, it was found that, despite the high level of social importance that respondents assigned to air purification (mean = 4.7/5), this had no correlation with payment values (rho = 0.0134, p = 0.8350); that is, households do not really recognize the monetary value of all the benefits they receive or the benefits they would lose if the service suffers changes. Hence, it is posed that monetary values do not necessarily reflect the social importance that individuals assign to ecosystem services, and attention is called to the need to integrate social and monetary values into decision-making processes, so as to encompass the complexity of ecosystem services and conciliate conflicting valuation language.

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36

Chen, Jun Hua, Li Tao, Ping Dao Gu, and Zi Bing Yang. "The Research of Air Purification under Complex Electric Fields." Advanced Materials Research 383-390 (November 2011): 5912–16. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.5912.

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A set of experimental device is built，to research the air purification under high voltage and high frequency complex electric fields. The results show that the half time TH will drop while the initial concentration of the aerosol particles reduces in air conditioning room, under high voltage and high frequency complex electric fields only or under the joint action of high voltage and high frequency complex electric fields and the filter. Compared with high voltage and high frequency complex electric fields only，the half time TH is observably reduced when they work together. The time of indoor air purification of air conditioning is greatly shortened. While the initial concentration of the aerosol particles is same, the diameters of aerosol particles are larger; the half time TH is less. The aerosol particles easily removed and the time of air purification is shorter.

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37

Liu, Jian Long, Hai Ping Zhang, Han Qing Wang, and Yu Hui Chu. "Numerical Simulation Analysis of Composite Air Purifying Device." Applied Mechanics and Materials 405-408 (September 2013): 2980–85. http://dx.doi.org/10.4028/www.scientific.net/amm.405-408.2980.

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To solve the technical problems existing in air purification, a multilevel air purification device was presented. And the new device is the combination of catalytic purifying technology of low-temperature plasma, nanoscaled titania and dual-band ultraviolet. For further studies on performance of the composite purification device, the device has been numerically simulated, through CFD simulation technology, by employing gas phase turbulence model, porous medium model and stochastic particle trajectory model. Contrast and analysis was made on velocity distribution, particle motion state and the pressure distribution of the internal flow field under different wind speed. The most appropriate wind speed could provide better centrifugal effect and less pressure loss. So some rules of velocity and pressure distribution in internal device were acquired.

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38

Geng, Shi Bin, and Ming Xing Xiao. "Indoor and Outdoor Air Contaminants Coupling Relationship and Measures of Improving Indoor Air Quality." Applied Mechanics and Materials 178-181 (May 2012): 711–17. http://dx.doi.org/10.4028/www.scientific.net/amm.178-181.711.

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This article use several different physical models to describe coupling relationship between indoor and outdoor air contaminants ,analysis the principle of the air filter air purification, discuss all the filters’ roles in improving IAQ.

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Y., Gerasymchuk,, Adamenko, O., Lavrishchev, A., and Novoselytskiy, Y. "Determination parameters of the precipitating electrode of the electrotechnical means for cleaning air of livestock buildings from harmful gases and bacterial contamination." Mehanization and electrification of agricultural, no. 9(108) (2019): 141–48. http://dx.doi.org/10.37204/0131-2189-2019-9-17.

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Purpose. Get dependence to determine the mass of the chemical adsorbent which is contained on the rotating precipitating electrode of the electrotechnical means, taking into account the kinetics of the process of air purification of livestock buildings from harmful gases and bacterial contamination with the complex use of electrophysical and chemical methods of decontamination and air purification. Methods. Analysis of the influence of chemical adsorbent and crown discharge field on the efficiency of air purification of livestock buildings from harmful gases and bacterial contamination. Experimental researches for determination of basic parameters of a precipitating electrode of an electrotechnical means. Results. Scheme of the electrotechnical means with the complex using of electrophysical and chemical methods of purification and disinfection of recirculation air of ventilation emissions from ammonia, carbon dioxide, hydrogen sulfide and bacterial contamination. Polynomial dependence for determining the mass of a chemical adsorbent which is contained on a rotating depositing electrode. Conclusions. Complex using of the electrotechnical means for air purification from harmful gases and bacterial contamination of the recirculation air flow and the utilization heat of ventilation emissions with the implementation anti-icing protection heat exchange surface of the recuperative heat utilizers allows to reduce the level of air exchange and significantly reduce energy costs to provide regulatory airspace of livestock buildings in the cold season. On the disks of precipitating electrodes of an electrotechnical mean for cleaning and disinfection of recirculation air of ventilation emissions, it is necessary to fix a polymer mesh with an area of cellules of 16 mm2, and the frequency rotation of the discs to support within the range from 0.25 s-1 to 1 s-1. Keywords: microclimate, heat utilizer, recuperate, air purification, corona discharge, precipitating electrode.

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40

Zagorskis, Alvydas, and Rasa Vaiškūnaitė. "An Investigation on the Efficiency of Air Purification Using a Biofilter with Activated Bed of Different Origin." Chemical and Process Engineering 35, no. 4 (December 1, 2014): 435–45. http://dx.doi.org/10.2478/cpe-2014-0033.

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Abstract Recent studies in the area of biological air treatment in filters have addressed fundamental key issues, such as a biofilter bed of different origin composed of natural zeolite granules, foam cubes and wood chips. When foam and zeolite are mixed with wood chips to remove volatile organic compounds from the air, not only biological but also adsorption air purification methods are accomplished. The use of complex purification technologies helps to improve the efficiency of a filter as well as the bed service life of the filter bed. Investigations revealed that microorganisms prevailing in biological purification, can also reproduce themselves in biofilter beds of inorganic and synthetic origin composed of natural zeolite and foam. By cultivating associations of spontaneous microorganisms in the filter bed the dependencies of the purification efficiency of filter on the origin, concentration and filtration time of injected pollutants were determined. The highest purification efficiency was obtained when air polluted with acetone vapour was supplied to the equipment at 0.1 m/s of superficial gas velocity. When cleaning air from volatile organic compounds (acetone, toluene and butanol), under the initial pollutant concentration of ~100 mg/m3, the filter efficiency reached 95 %.

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41

Zhang, Bingli, Liuyi Li, Xi Yao, Yuxiu Gong, Yu Zhang, Huai Yang, Weiguang Li, et al. "Analysis of Air Purification Methods in Operating Rooms of Chinese Hospitals." BioMed Research International 2020 (February 1, 2020): 1–7. http://dx.doi.org/10.1155/2020/8278943.

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This research demonstrates the current use of air purification methods in the operating rooms (ORs) in China. 154 hospitals from 6 provinces were included in this survey to reflect the air purification methods of ORs in 2017. Air cleaning technology (ACT) is used in 124 (80.52%) hospitals. We find that the rates of using grade I, III, or IV clean operating room (COR) in tertiary hospitals are all higher than in lower level hospitals; the rate of using ACT in the ORs is higher, too. In addition, general hospitals have higher rate in using ACT in the ORs than specialized hospitals. The highest rate of using ACT in the ORs is in the eastern region of China. The number of hospitals using ACT, ultraviolet light disinfection, and air sterilizers (such as circulating air UV sterilizer) increased yearly. All grades of CORs can be maintained as required by more than 90% hospitals except grade II COR. In this research, we found air purification methods, especially the ACT, are widely used in hospitals’ ORs. However, finding the way to select and use different air purification methods correctly is an urgent problem to be solved next.

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42

Xie, Dong Lai, and Jin Hui Luo. "A Novel Air Purifier for Trace SO₂ Removal and Simulation of the Purification Effect." Advanced Materials Research 1092-1093 (March 2015): 805–9. http://dx.doi.org/10.4028/www.scientific.net/amr.1092-1093.805.

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With the large-scale usage of coal and gasoline, China has been the most serious SO2-polluted country in the world. SO2 can cause respiratory and cardiovascular disease, which does great harm to human health. Therefore, developing an air purifier to absorb trace SO2 is very necessary. According to the mechanism of SO2 absorption with the alkaline solution, we developed an air purifier with an purification capacity of 80m3 -100m3 per hour. The purification effect with different gas flow rates, absorbing liquids and initial SO2 concentration was tested. Test results indicated that the purifier had a very good absorption of trace SO2 for indoor air. A SO2 purification model in confined space was established and the purification effect of the purifier was simulated with ANSYS FLUENT 14.0.

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Sheng, Ying, Lei Fang, and Yuexia Sun. "An experimental evaluation on air purification performance of Clean-Air Heat Pump (CAHP) air cleaner." Building and Environment 127 (January 2018): 69–76. http://dx.doi.org/10.1016/j.buildenv.2017.10.039.

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Jasuja, Himanshu, Gregory W. Peterson, Jared B. Decoste, Matthew A. Browe, and Krista S. Walton. "Evaluation of MOFs for air purification and air quality control applications: Ammonia removal from air." Chemical Engineering Science 124 (March 2015): 118–24. http://dx.doi.org/10.1016/j.ces.2014.08.050.

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O., Dovbnenko,, and Kolesnik, I. "Development of ultraviolet bactericidal recirculator for air purification of livestock buildings." Mehanization and electrification of agricultural, no. 9(108) (2019): 149–55. http://dx.doi.org/10.37204/0131-2189-2019-9-18.

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Abstract:

Purpose. Improving the efficiency of the air purification process through the use of the created design and determining the rational parameters of the luminescent ultraviolet bactericidal air recirculator for livestock buildings. Methods. Methods of analysis, mathematical modeling and engineering methods for calculating irradiation installations are used. Results. The methods of application of ultraviolet bactericidal (UVB) plants for purification and disinfection of the air environment in agricultural premises are analyzed. Impact mechanism established of UVB radiation and ozone for pathogenic microflora and harmful impurities in the air of livestock premises is substantiated. The grounded design, the method of engineering calculation and the technical parameters of the UVB air recirculator are determined. Experimental samples of UVB recirculators of air in livestock buildings were made and the results of their production tests are presented. Conclusions. UVB recycle converter with application of luminescent UVB lamps with installed capacity = 180 W and air capacity = 1800 m3/h provides bactericidal efficiency = 75%, and with = 1000 m3/h – bactericidal efficiency = 90%. Keywords: recirculator, ultraviolet, bactericidal, ozone, air purification, disinfection, microclimate of livestock buildings.

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MIYANAGA, Hisakazu. "Environmental problem of room air. On purification of the room air environment." Journal of Environmental Conservation Engineering 28, no. 3 (1999): 187–93. http://dx.doi.org/10.5956/jriet.28.187.

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Boonen, Elia, and Anne Beeldens. "Recent Photocatalytic Applications for Air Purification in Belgium." Coatings 4, no. 3 (July 31, 2014): 553–73. http://dx.doi.org/10.3390/coatings4030553.

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Uraz, Alan. "Air purification: Dual filtration approach meets formaldehyde challenge." Filtration + Separation 50, no. 1 (January 2013): 38–40. http://dx.doi.org/10.1016/s0015-1882(13)70037-5.

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Ma, Chih-Ming, Gui-Bing Hong, Sih-Yu Liou, and Chang-Tang Chang. "The Indoor Air Purification by New Photocatalytic Reactor." Advanced Science Letters 13, no. 1 (June 30, 2012): 758–61. http://dx.doi.org/10.1166/asl.2012.3776.

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Salden, Axel, and Gerhart Eigenberger. "Multifunctional adsorber/reactor concept for waste-air purification." Chemical Engineering Science 56, no. 4 (February 2001): 1605–11. http://dx.doi.org/10.1016/s0009-2509(00)00388-2.

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