CO2 in indoor environments: From environmental and health risk to potential renewable carbon source

López, Laura; Dessì, P.; Cabrera-Codony, Alba; Rocha-Melogno, Lucas; Kraakman, B.; Naddeo, Vincenzo; Balaguer, M. Dolors; Puig, Salvador Martí i

doi:10.1016/j.scitotenv.2022.159088

Cited by 51 publications

(25 citation statements)

References 312 publications

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“…The combination of CO 2 and NH 3 alters the pH of water films in indoor aerosols and on indoor surfaces and thus has meaningful impacts on the persistence of airborne viruses , and indoor surface chemistry . Although in typical offices and residences, the CO 2 and NH 3 concentrations are insufficient to trigger acute health effects, , elevated levels can still lead to discomfort and affect the performance of occupants. , …”

Section: Introductionmentioning

confidence: 99%

Physiology or Psychology: What Drives Human Emissions of Carbon Dioxide and Ammonia?

Yang,

Bekö,

Wargocki

et al. 2024

Environ. Sci. Technol.

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Humans are the primary sources of CO 2 and NH 3 indoors. Their emission rates may be influenced by human physiological and psychological status. This study investigated the impact of physiological and psychological engagements on the human emissions of CO 2 and NH 3 . In a climate chamber, we measured CO 2 and NH 3 emissions from participants performing physical activities (walking and running at metabolic rates of 2.5 and 5 met, respectively) and psychological stimuli (meditation and cognitive tasks). Participants' physiological responses were recorded, including the skin temperature, electrodermal activity (EDA), and heart rate, and then analyzed for their relationship with CO 2 and NH 3 emissions. The results showed that physiological engagement considerably elevated per-person CO 2 emission rates from 19.6 (seated) to 46.9 (2.5 met) and 115.4 L/h (5 met) and NH 3 emission rates from 2.7 to 5.1 and 8.3 mg/h, respectively. CO 2 emissions reduced when participants stopped running, whereas NH 3 emissions continued to increase owing to their distinct emission mechanisms. Psychological engagement did not significantly alter participants' emissions of CO 2 and NH 3 . Regression analysis revealed that CO 2 emissions were predominantly correlated with heart rate, whereas NH 3 emissions were mainly associated with skin temperature and EDA. These findings contribute to a deeper understanding of human metabolic emissions of CO 2 and NH 3 .

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Section: Introductionmentioning

confidence: 99%

Physiology or Psychology: What Drives Human Emissions of Carbon Dioxide and Ammonia?

Yang,

Bekö,

Wargocki

et al. 2024

Environ. Sci. Technol.

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“…The most critical parameter based on the current regulations are particulate matter (PM10, PM2.5) and carbon monoxide CO, [11]. The carbon dioxide level (CO2) is also an important parameter that is affecting air quality in the office environments and that has strong impact on the human metabolism, [12]. Moreover, the impact of the volatile organic compounds (VOC) and formaldehyde is also present in the office environments and can also affect human health on certain extent, [13], since for instance level of VOC in indoor environments can be several times higher when compared to the outdoor air.…”

Section: Introductionmentioning

confidence: 99%

Importance of air quality indicators for office environments: An overview

Čulić

Nižetić

Šolić

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Air quality in office buildings has got an impact on working productivity as well as on the working satisfaction in office environments. Moreover, final effect can be linked with thermal comfort conditions since they have significant impact on energy consumption in offices. In this study various factors have been investigated and analysed in order to understand their impact on air quality and occupants’ satisfaction with the environmental conditions. The second perspective of the overview was focused on analysis of the air quality interconnection with thermal comfort conditions, since they are linked. The current issues as well as challenges in the field were also discussed within this investigation. The results of conducted research would be directly useful for more advanced consideration of personal air quality and thermal comfort conditions as vital aspect of smart and high-performance buildings.

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“…Epidemiological evidence shows that there is a relationship between indoor pollutants and health risks, 14 and indoor pollutants of concern include particulate matter (PM), biological organisms (fungal spores, bacteria, and viruses), allergens, over 400 different chemical compounds, mainly volatile organic compounds (VOCs) such as benzene, toluene, methanol, ethylbenzene and xylene, inorganic compounds (ICs) such as carbon monoxide (CO), carbon dioxide (CO 2 ), nitrogen oxides (NO x ) and ozone (O 3 ), among others. 15,16…”

Section: Introductionmentioning

confidence: 99%

“…The complex indoor environment contains many factors that affect indoor microbial concentration, including particles of different particle sizes, carbon dioxide (CO 2 ), temperature, humidity, ventilation rate, season, height, etc. [4][5][6][7][8][9][10][11][12][13] Epidemiological evidence shows that there is a relationship between indoor pollutants and health risks, 14 and indoor pollutants of concern include particulate matter (PM), biological organisms (fungal spores, bacteria, and viruses), allergens, over 400 different chemical compounds, mainly volatile organic compounds (VOCs) such as benzene, toluene, methanol, ethylbenzene and xylene, inorganic compounds (ICs) such as carbon monoxide (CO), carbon dioxide (CO 2 ), nitrogen oxides (NO x ) and ozone (O 3 ), among others. 15,16 Given that 5%-34% of particulate matter (PM) in indoor air is in the form of bioaerosols (i.e., bacteria), 17 these bioaerosols are accompanied by many harmful microorganisms and viruses, such as SARS-CoV-2 and other viruses, which are spread through bioaerosols.…”

Section: Introductionmentioning

confidence: 99%

Prediction models of bioaerosols inside office buildings: A field study investigation

Jiang

Gong

et al. 2023

Building Services Engineering Research and Technology

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Bioaerosols formed by microorganisms in the air directly affect people’s health. The air quality in an office building in Shenzhen, China, is investigated and pollutant levels measured on 36 occasions; six times for each of six indoor spaces. A relationship between indoor bioaerosols and environmental factors was determined using both linear regression analysis and Poisson regression analysis. Our results and analysis indicate that linear regression is a poor predictor for the concentration of bioaerosols based on a single indicator. In contrast, Poisson regression can better predict the concentration of bioaerosols, and PM10 may be the indicator with the greatest impact on bioaerosols. As a result, a simple, fast, and low-cost online monitoring method for monitoring indoor bioaerosols is developed and reported. Our paper provides first-hand basic data to predict the indoor bioaerosol concentration and helps to formulate appropriate monitoring guidelines. The proposed method offers more practical values compared to existing studies as our prediction model facilitates estimation of the concentration of bioaerosols at low cost. Additionally, due to the current maturity and low cost of indoor environmental sensors, the proposed method is suitable for large-scale deployment for most buildings. Practical application Based on measurement data from a real office building, our investigation explores the relationship between indoor microorganisms and building environmental indicators through a combination of probability analysis and actual measurement. We establish a novel indoor microbial prediction model using the Poisson regression model. Our work presents an effective, low-cost, method for estimating the concentration of bioaerosols and discusses the possibility for large-scale deployment of microbial monitoring equipment inside buildings which may then support real-time monitoring of indoor microbial concentration to provide healthy indoor environments for personnel.

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CO2 in indoor environments: From environmental and health risk to potential renewable carbon source

Cited by 51 publications

References 312 publications

Physiology or Psychology: What Drives Human Emissions of Carbon Dioxide and Ammonia?

Physiology or Psychology: What Drives Human Emissions of Carbon Dioxide and Ammonia?

Importance of air quality indicators for office environments: An overview

Prediction models of bioaerosols inside office buildings: A field study investigation

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