EFFECT OF EXHAUST FAN TO MICROORGANISM CONCENTRATION IN THE AIR-CONDITIONED ROOM
Specific amounts of bacteria and fungi in the room can cause Sick Building Syndrome (SBS). The main reason for bacteria and fungi accumulation is a lack of air circulation in the air-conditioned room. Therefore, we study exhaust fan usage to microorganism concentration in the air-conditioned room. The objective of this study is to find the optimum exhaust fan running time for reducing microorganism concentration until below the threshold value. The quasi-experiment was using with repeated experiments and non-random methodology. The samples were consisting of four air-conditioned classrooms with six repeated measurements. The sampling instrument used a petri dish filled with NA (Nutrient Agar) and PDA (Potato Dextrose Agar) placed at five points in each room. The results showed that the variation of exhaust fan running time sig affected the concentration of bacteria (sig ~0) and fungi (sig 0.023) in the classrooms. We found that exhaust fan can reduce the bacteria concentration. Although we observed that the exhaust fan gives inconsistency effect to reduce the fungi concentration in the classrooms.
Laila Fitria, et al. Air Quality in "X" University Library Room Judging From Biology, Physical and Chemistry Kaulitas. Makara Journal, Health. December 2008; 12 (2): 76-82.
Sedyaningsih, E. R. Guidelines for air sanitation in the home space. Jakarta, 2011.
RI Ministry of Health. RI Minister of Health Regulation No. 48 of 2016 concerning Office Occupational Safety and Health Standards. RI Ministry of Health: Jakarta, 2016.
Ahearn D., Armour, S. & Banta, J. Guidelines on assessment and remediation of kapang in indoor environments. Department of Health and Mental Hygiene: New York, 2008.
Heseltine, E.& Rosen, J. WHO guidelines for indoor air quality: dampness and mold. World Health Organization: Europe, 2009.
RI Ministry of Health. RI Minister of Health Regulation No. 1407 / Menkes / SK / XI / 2002 concerning Guidelines for Controlling the Impact of Air Pollution. MOH, RI: Jakarta, 2002.
RI Ministry of Health. RI Minister of Health Regulation No. 1077 / Menkes / Per / V / 2011 concerning Guidelines for Indoor Air Sanitation. RI Ministry of Health: Jakarta, 2011.
Stryjakowska-Sekulska, M et al. Microbiological Quality of Indoor Air in University Rooms. Polish Journal of Environments Study. 2007;16: 623-632
Haitam K, Faris M, Mansur S. Bacterial and Fungal Contamination of Air conditioners filters and Carpets. International Journal of Environment, Agriculture and Biotechnology. 2016;1:399-404
G. Mallach, M. St-Jean, M. MacNeill, D. Aubin, L. Wallace, et al. Exhaust ventilation in attached garages improves residential indoor air quality. Indoor Air. 2017;27: 487–49
National Standardization Agency. A technique for Determining Air Sampling Points at Work. BSN: Jakarta, 2009.
Hayleeyesus, S. F., & Manaye, A. M. Microbiological quality of indoor air in university libraries. Asian Pac J Trop Biomed. 2014;4(1):S312-7.
Wamedo SA, Ede PN, Chuku A. Interaction between building design and indoor airborne microbial load in Nigeria. Asian J Biol Sci. 2012;5:183–191.
Graudenz GS, Oliveira CH, Tribes A, Mendes C Jr, Latorre MR, Kalil J. Association of air-conditioning with respiratory symptoms in office workers in a tropical climate. Indoor Air. 2005 Feb;15(1):62-6.
Ponce-Caballero C, Gamboa-Marrufo M, Lopez-Pacheco M, Ceron-Palma I, Quintal-Franco C, Giacoman-Vallejos G, Loria-Arcila JH. Seasonal variation of airborne fungal propagules indoor and outdoor of domestic environments in Merida, Mexico. Atmosfera. 2013;26(3):369-377.
Adams RI, Bhangar S, Pasut W, Arens EA, Taylor JW, Lindow SE, et al.Chamber bioaerosol study: outdoor air and human occupants as sources of indoor airborne microbes. PLoS One. 2015;10:e0128022.
Fox A, Harley W, Feigley C, Salzberg D, Sebastian A, Larsson L. Increased levels of bacterial markers and CO2 in occupied school rooms. Journal of Environmental Monitoring. 2003;5(2):246-252
Mahyuddin N, Awabi HB, Alshitawi M. The spatial distribution of carbon dioxide in rooms with particular application to classrooms. Indoor and Built Environment. 2014;23(3):433-448.
Meadow JF, Altrichter AE, Kembel SW, Kline J, Mhuireach G, Moriyama M, et al. Indoor airborne bacterial communities influenced by ventilation, occupancy, and out outside air source. Indoor air. 2014;24(1):41-48.
Barberan A, Dunn RR, Reich BJ, Pacifici K, Laber EB, Menninger HL, et al. The ecology of microscopic life in household dust. Proc R Soc B. 2015;282:2015;1139.
Adams RI, Miletto M, Taylor JW, Bruns TD. Dispersal in microbes: fungi in indoor air are dominated by outdoor air and show dispersal limitation at short distances. ISME J. 2013;7:1262–73.
Goh I, Obbard J, Viswanathan S, Huang Y. Airborne bacteria and fungal spores in the indoor environment. A case study in Singapore. Acta Biotechnol. 2000;20:67–73.