Evaluating the Efficacy of the MedicAir Air Purifier in Reducing Ambient Air Pollution in Classrooms

In light of the novel coronavirus and transmission in schools, increased scrutiny has been placed on airborne viral and particulate contamination, and efforts to mitigate this have been suggested, including the use of air purification. The importance of this is increased given the relationship between increased airborne particulates and increased coronavirus transmission, as well as the significance of removing particulates in the size range of bacteria and viruses from the air. Ambient levels of pm2.5 and pm1 in the absence of purification were recorded in two classrooms of similar size using medical grade data loggers, which then measured the change in these levels with use MedicAir air purifiers. It was found that baseline levels at times doubled the WHO limits for safe IAQ- MedicAir units were able to rapidly reduce levels of particulates to significantly below guidelines. We propose that the use of these units is an effective and rapid solution for the mitigation of coronavirus transmission, as well as the improvement of IAQ in schools.

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

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.

Pembuatan Air Purifier Dengan Air Sebagai Filter Untuk Kontrol Kesehatan Lingkungan

Pencemaran udara diartikan dengan turunnya kualitas udara sehingga udara mengalami penurunan mutu dalam penggunaannya dan akhirnya tidak dapat dipergunakan lagi sebagai mana mestinya sesuai dengan fungsinya. Untuk mengetahui tingkat pencemaran udara diperlukan suatu alat sebagai pemantau kualitas udara. Perkembangan pesat dalam alat dan cara kerja air purifier dalam ruang lingkup yang meluas sehingga air purifier yang seharusnya bermanfaat bagi lingkungan namun dalam kenyataannya merusak lingkungan. Kebutuhan manusia yang besar dalam hal alat dan peralatan namun tidak mengetahui dasar dari alat air purifier yang dapat diterapkan dan dikembangkan dengan bahan dan cara yang sederhana.

Pembuatan Air Purifier dengan Air Sebagai Filter Untuk Kontrol Kesehatan Lingkungan

Pencemaran udara diartikan dengan turunnya kualitas udara sehingga udara mengalami penurunan mutu dalam penggunaannya dan akhirnya tidak dapat dipergunakan lagi sebagai mana mestinya sesuai dengan fungsinya. Untuk mengetahui tingkat pencemaran udara diperlukan suatu alat sebagai pemantau kualitas udara. Perkembangan pesat dalam alat dan cara kerja air purifier dalam ruang lingkup yang meluas sehingga air purifier yang seharusnya bermanfaat bagi lingkungan namun dalam kenyataannya merusak lingkungan. Kebutuhan manusia yang besar dalam hal alat dan peralatan namun tidak mengetahui dasar dari alat air purifier yang dapat diterapkan dan dikembangkan dengan bahan dan cara yang sederhana.

Improving the Indoor Air Quality in Nursery Buildings in United Arab Emirates

Children inhale indoor air at 400 mL/min∙kg per body weight, 2.76 times more than adults. They have weaker immunity than adults and are more exposed to asthma, allergies, and atopic diseases. The objective of this paper is to suggest effective management and improvement measures for indoor air quality for nurseries. As a methodology, 16 nurseries (total of 35 classrooms) were selected to measure the indoor air quality compared with WHO IAQ Standard, and identify the daily concentration change of the pollutants. Based on the measurements, IAQ improvements for selected facilities are carried out to compare the results before and after improvement. The result has shown that the concentration of Carbon Dioxide (CO2), Total Volatile Organic Compounds (TVOC), Total Suspended Particles (TSP) and formaldehyde (CH2O) exceeds WHO IAQ standards. The concentration of CO2 and TSP is changed mainly by physical activity of children and that of CH2O and TVOC is changed mainly by ventilation after school start. TVOC decreased by 46.4% and the TSP decreased by 21.7% after air purifier, but CH2O and TVOC increased 1.8–3.8 times after interior renovation with low-emission finishing materials. After new ventilation installation, the CH2O and TVOC reduced half and the TSP reduced one third. It is proven that the most effective way to reduce the concentration of air pollutants in nurseries is the installation of a new ventilation system, followed by an air purifier. The renovation with low-emission finishing materials cannot improve IAQ in a short period of time.