Development of an Indoor Air Purification System to Improve Ventilation and Air Quality

2021 ◽  
Author(s):  
G. S. N. V. K. S. N. SWAMY UNDI
Keyword(s):  
Air Quality ◽  
Indoor Air ◽  
Air Purification ◽  
Purification System ◽  
Indoor Air Purification

Highly Efficient Ru/CeO2 Catalyst for Formaldehyde Oxidation at Low Temperature and Mechanistic Study

2021 ◽  
Author(s):  
Xiaoxiao Qin ◽  
Xueyan Chen ◽  
Min Chen ◽  
Jiangho Zhang ◽  
Hong He ◽  
...  
Keyword(s):  
Low Temperature ◽  
Indoor Air ◽  
Air Purification ◽  
Mechanistic Study ◽  
Highly Efficient ◽  
Formaldehyde Oxidation ◽  
Indoor Air Purification

Formaldehyde (HCHO) elimination at low temperature is of great interest for indoor air purification. In this work, 1 wt. % Ru supported on CeO2 and Al2O3 catalysts were prepared by...

scholarly journals Effect of Air Purifier Use in the Classrooms on Indoor Air Quality—Case Study

Atmosphere ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1606
Author(s):  
Małgorzata Basińska ◽  
Michał Michałkiewicz ◽  
Katarzyna Ratajczak
Keyword(s):  
Particulate Matter ◽  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Air Purification ◽  
Portable Devices ◽  
Microscopic Fungi ◽  
Before And After ◽  
Air Purifier ◽  
High Level

Dissatisfaction with indoor air quality is common even in relatively new or renovated Polish school buildings. To improve air quality in educational buildings, portable devices have seen increased use, for which manufacturers guarantee a high level of indoor air purification. However, their optimized operation largely depends on their correct use. The aim of this article was to determine the effectiveness of air purification in a primary school using an air purification device with an analysis of the classroom indoor air quality (IAQ). Two criteria were used, microbiological and particulate matter concentration. Measurements were made before device installation and during its continuous operation, and before and after lessons on chosen days. Measurements related to IAQ did not detect clear differences in the analyzed measurement periods. For microbiological contamination, in the morning before lessons, the total count for all bacteria and microscopic fungi was definitely lower than after lessons. Comparing the periods before and after device installation, no clear tendency for reducing the bacteria count or microscopic fungi occurred during air purifier operation, nor was there any noticeable trend in the reduction of particulate matter. There was no improvement in air quality in the classrooms during the operation of the purification devices.

scholarly journals House-plant placement for indoor air purification and health benefits on asthmatics

2014 ◽  
Vol 29 ◽  
pp. e2014014 ◽  
Author(s):  
Ho-Hyun Kim ◽  
Ji-Yeon Yang ◽  
Jae-Young Lee ◽  
Jung-Won Park ◽  
Kwang-Jin Kim ◽  
...  
Keyword(s):  
Indoor Air ◽  
Health Benefits ◽  
Air Purification ◽  
Indoor Air Purification
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