Solar photocatalytic oxidation of NO by electronspun TiO2/ZnO composite nanofiber mat for enhancing indoor air quality

2014 ◽  
Vol 89 (11) ◽  
pp. 1646-1652 ◽  
Author(s):  
Carina Chun Pei ◽  
Wallace Woon-Fong Leung
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Photocatalytic Oxidation ◽  
Composite Nanofiber ◽  
Oxidation Of No

Fabrication of Water-Based TiO2-Coated Pleated Synthetic Fiber toward Photocatalytic Oxidation of VOCs and CO for Indoor Air Quality Improvement

2019 ◽  
Vol 145 (6) ◽  
pp. 04019030
Author(s):  
Chamorn Chawengkijwanich ◽  
Chonlada Pokhum ◽  
Chutima Srisitthiratkul ◽  
Nakarin Subjalearndee ◽  
Voraluck Pongsorrarith ◽  
...  
Keyword(s):  
Quality Improvement ◽  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Photocatalytic Oxidation ◽  
Synthetic Fiber ◽  
Water Based ◽  
Air Quality Improvement

scholarly journals Innovative hydraulic lime-based finishes with unconventional aggregates and TiO2 for the improvement of indoor air quality

2020 ◽  
Vol 7 ◽  
pp. 13
Author(s):  
Chiara Giosuè ◽  
Alessandra Mobili ◽  
Barbara Citterio ◽  
Francesca Biavasco ◽  
Maria Letizia Ruello ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Air Quality ◽  
Indoor Air Quality ◽  
Silica Gel ◽  
Indoor Air ◽  
Photocatalytic Oxidation ◽  
Vapor Permeability ◽  
High Porosity ◽  
Hydraulic Lime ◽  
Inhibitory Capacity

This paper reports a study on 8 unconventional hydraulic lime-based mortars able to improve indoor air quality by acting as passive systems. Mortars have been prepared with commercial sand or highly adsorbent materials as aggregates with/without TiO2 as photocatalytic agent, to test also the decomposition of airborne pollutants. Mechanical properties, hygrometric behavior, inhibition of growth of molds and depollution properties have been tested. Despite using porous materials (zeolite and activated carbon), in mortars with unconventional aggregates, compressive strength is higher than in sand-based ones, with a more than double higher water vapor permeability. Zeolite-based mortars have the highest moisture buffering capacity followed by silica gel- and activated carbon-based mortars (1.5–2 times higher than reference, respectively, because of the high porosity of unconventional aggregates). Sand-based mortars show optimum inhibitory capacity against fungal growth. Concerning unconventional aggregates, silica gel mortars have good inhibitory capacity, whereas zeolite and activated carbon give to mortars an optimum substrate for molds. Mortars with unconventional aggregates as silica gel remove more than 80% of tracer pollutant after 2 h of test, whereas zeolite-based mortars remove the 65% of it after 120 min. TiO2 enhances depollution properties as photocatalytic oxidation agent when the mortar is close to saturation.

scholarly journals Recent Chalenges of indoor air quality

Paliva ◽  
2020 ◽  
pp. 114-135
Author(s):  
František Skácel ◽  
Viktor Tekáč
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Photocatalytic Oxidation ◽  
Indoor Air Pollution ◽  
Membrane Separation ◽  
Biological Processes ◽  
Good Opportunity ◽  
Complex Issue ◽  
Treatment Techniques

Indoor air pollution is a complex issue involving a wide diversity and variability of pollutants that threats human health. In this context, major efforts should be made to enhance indoor air quality. Thus, it is important to start by the control of indoor pollution sources. This review presents a general overview of single treatment techniques such as mechanical and electrical filtration, adsorption, ozonation, photolysis, photocatalytic oxidation, biological processes, and membrane separation. Since there is currently no technology that can be considered fully satisfactory for achieving ‘‘cleaner’’ indoor air, special attention is paid to combined purification technologies or innovative alternatives that are currently under research and have not yet been commercialized (plasma-catalytic hybrid systems, hybrid ozonation systems, biofilter-adsorption systems, etc.). These systems seem to be a good opportunity as they integrate synergetic advantages to achieve good indoor air quality. Review contains more than 150 references.

Feinstaubfiltrierung: Saubere Luft atmen

2017 ◽  
Vol 22 (07/08) ◽  
pp. 106-107
Author(s):  
Marc Lichtenthäler
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Eine Hohe

Viele Studien belegen, dass durch eine hohe Indoor Air Quality die Produktivität gesteigert, Fehlzeiten abgebaut und Herz-Kreislauf-Erkrankungen vermieden werden können. Neben Behandlungs-, OP- und Pflegebereichen eines Klinikums sollten deshalb auch Bereiche mit gut aufbereiteter Raumluft bedacht werden, in denen sich ausschließlich Mitarbeiter aufhalten.

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