Adsorption of Carbon Dioxide by Metal Organic Framework for Indoor Air Quality Enhancement

Abstract Air pollution has become a severe environmental issue among millions of people around the globe. However, the risk of exposure to indoor air pollution is much higher than outdoor air pollution. The most effective way to improve indoor air quality (IAQ) by reducing the indoor CO2 content is by capturing and storing. There are several types of adsorbents used to capture CO2, namely physical adsorbents and chemical adsorbents. Metal-Organic Framework (MOF) is one of the recent interests arising physical adsorbents which possesses high adsorption capability. In this study, MOFs fabricated with different metals and organic ligands were used to evaluate their performance in CO2 adsorption under an enclosed office space. Magnesium, chromium, and copper metals were used as the main element in the MOF fabrication coupled with trimesic acid as an organic ligand. The MOFs’ morphologies generally illustrated that magnesium MOF exhibited a dispersed nanorod flask crystal, chromium MOF showed agglomeration crystal, whereas fine crystal rod was observed in copper MOF. The elemental analysis from EDX and XRD confirmed that the metals were successfully embedded with the organic ligand, which is similar to the literature studies. The CO2 gas adsorption study suggested that magnesium MOF fabricated with trimesic acid possess superior CO2 adsorption capability as the recorded CO2 concentration reduced from 960 ± 73 ppm to 895 ± 57 under 2 hours continuous sampling time. The CO2 adsorption study reveals that the magnesium MOF with trimesic acid ligand yields a promising result on indoor CO2 concentration reduction. This result suggested that the MOF possesses a great potential to be applied in the indoor air quality enhancement with the integration to the existing air purification and/or filtration system.

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Metal–organic framework-based nanofiber filters for effective indoor air quality control

Journal of Materials Chemistry A ◽

10.1039/c8ta04539a ◽

2018 ◽

Vol 6 (32) ◽

pp. 15807-15814 ◽

Cited By ~ 60

Author(s):

Ye Bian ◽

Rutao Wang ◽

Shijie Wang ◽

Chenyu Yao ◽

Wei Ren ◽

...

Keyword(s):

Quality Control ◽

Air Quality ◽

Indoor Air Quality ◽

Indoor Air ◽

Metal Organic Framework ◽

Dual Role ◽

Synthetic Strategy ◽

Air Quality Control ◽

Metal Organic ◽

Organic Framework

MOF-based nanofiber filters via a scalable synthetic strategy serve a dual role in removing both PM2.5 and formaldehyde effectively.

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Evaluasi Desain Bangunan Berdasarkan Sistem Sertifikasi DGNB (Studi Kasus : The Khabele School, Austin)

Arsitektura ◽

10.20961/arst.v19i2.47150 ◽

2021 ◽

Vol 19 (2) ◽

pp. 167

Author(s):

Dady Wicaksono ◽

Sugini Sugini

Keyword(s):

Air Pollution ◽

Air Quality ◽

Indoor Air Quality ◽

Indoor Air ◽

Rapid Development ◽

Empirical Studies ◽

Design Strategies ◽

Sustainable Building ◽

Pollution Problem ◽

Zero Carbon

The air pollution problem had become a big problem for many cities in the world. In line with the rapid development of these cities, the concept of sustainability also continues to develop with various solutions to overcome existing problems. To solve the air pollution problem, the authors evaluated the selected building object, The Khabele School, to see the extent of the building's contribution to overcoming the air pollution problem. The evaluation was carried out based on the DGNB (German Sustainable Building Council) certification system, the variables measured were biotope area factor (BAF), indoor air quality, daylight factor, and zero-carbon mobility. The results reveal that indoor air quality and daylight factors could meet the desired standards, while BAF and zero-carbon mobility had not met the standard. Based on theoretical and empirical studies, this paper discussed alternative design strategies, to improve the quality of the building, so that they can contribute more to overcoming air pollution problem.

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Association between Human Health and Indoor Air Pollution in Saudi Arabia: Indoor Environmental Quality Survey

Journal of Pharmaceutical Research International ◽

10.9734/jpri/2020/v32i3430965 ◽

2020 ◽

pp. 57-66

Author(s):

Mohd Saleem ◽

Mohd Adnan Kausar ◽

Fahmida Khatoon ◽

Sadaf Anwar ◽

Syed Monowar Alam Shahid ◽

...

Keyword(s):

Air Pollution ◽

Air Quality ◽

Indoor Air Quality ◽

Human Health ◽

Indoor Air ◽

Indoor Air Pollution ◽

Negative Impact ◽

Natural Light ◽

Common Symptom ◽

Indoor Environmental Quality

In many aspects of life quality, bio-contaminants and indoor air quality have had catastrophic consequences, including a negative impact on human health with an increased prevalence of allergic respiratory reactions, asthma, and infectious diseases. We aimed to evaluate the quality of indoor air environment and find out the association between human health and indoor air pollution and also to assess the physical health status of a group of Saudi and non-Saudi populations during this pandemic. Also, we aimed to assess the most common health condition or symptoms associated with ventilation. A questionnaire was distributed online to test indoor air quality, ventilation status, common signs and symptoms of any allergy or mental status and their relationship to certain variables. A total of 362 respondents were included. Before living in the current home, flu or Influenza and chapped lips were more prevalent than allergies and chapped lips signs while living in the current home. (12.2% , 10.8% vs. 18.5% , 13.55% before and after respectively) Multiple colds were the second most common symptom (10.2%). Hoarse voice and headaches were the least common symptoms experienced; each constituted 4.4%. During the COVID-19 Pandemic, most respondents wore a facemask, approximately 76.5%; and almost one-third of respondents had bright natural light inside the current home (43.1%). The presence of natural light within the current home was significantly associated with symptoms experienced during living in the current house (p<0.05). Natural sunlight exposure could decrease allergic symptoms and minor health problems associated with poor ventilation and air quality indoors. In current living homes, the majority of respondents never used air purifiers (72.9 percent). In order to get attention from people to enhance the quality and ventilation mechanism of indoor air, special care and awareness of the effects of the use of air purifiers on human health is needed.

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Progress toward a general analytical method for predicting indoor air pollution in buildings- indoor air quality modeling phase III report

10.6028/nbs.ir.88-3814 ◽

1988 ◽

Cited By ~ 4

Author(s):

James Axley

Keyword(s):

Air Pollution ◽

Air Quality ◽

Indoor Air Quality ◽

Indoor Air ◽

Analytical Method ◽

Indoor Air Pollution ◽

Air Quality Modeling ◽

Phase Iii ◽

Quality Modeling

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Influence of Atmospheric Air Pollution on Indoor Air Quality: Comparison of Chemical Pollutants and Mutagenicity Levels in Santiago (Chile)

Indoor and Built Environment ◽

10.1159/000463361 ◽

1997 ◽

Vol 6 (6) ◽

pp. 320-330

Author(s):

Lionel Gil ◽

Dante Câceres ◽

Marta Adonis

Keyword(s):

Air Pollution ◽

Air Quality ◽

Indoor Air Quality ◽

Indoor Air ◽

Atmospheric Air ◽

Chemical Pollutants

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Indoor Air Quality Enhancement Performance of Liquid Desiccant and Evaporative Cooling-Assisted Air Conditioning Systems

Sustainability ◽

10.3390/su11041036 ◽

2019 ◽

Vol 11 (4) ◽

pp. 1036 ◽

Cited By ~ 5

Author(s):

Beom-Jun Kim ◽

Junseok Park ◽

Jae-Weon Jeong

Keyword(s):

Air Quality ◽

Indoor Air Quality ◽

Indoor Air ◽

Reference System ◽

Air Conditioning ◽

Evaporative Cooling ◽

Quality Enhancement ◽

Liquid Desiccant ◽

Air Conditioning Systems ◽

Indoor Pm2.5

The main objective of this study is to investigate the indoor air quality enhancement performance of two different liquid desiccant and evaporative cooling-assisted air conditioning systems, such as the variable air volume (VAV) system with the desiccant-enhanced evaporative (DEVap) cooler, and the liquid desiccant system with an indirect and direct evaporative cooling-assisted 100% outdoor air system (LD-IDECOAS), compared with the conventional VAV system. The transient simulations of concentration variations of carbon dioxide (CO2), coarse particles, and fine particles (PM10 and PM2.5) in a model office space served by each system were performed using validated system models that were found in the literature. Based on the hourly thermal loads of the model space predicted by the TRNSYS 18 program, each air conditioning system was operated virtually using a commercial equation solver program (EES). The results indicated that the LD-IDECOAS provided the lowest annual indoor CO2 concentration among all the systems considered in this research, while the VAV system with DEVap cooler exceeded the threshold concentration (i.e., 1000 ppm) during the cooling season (i.e., July, August, and September). For the indoor particulate contaminant concentrations, both liquid desiccant and evaporative cooling-assisted air conditioning systems indicated lower indoor PM2.5 and PM10 concentrations compared with the reference system. The LD-IDECOAS and the VAV with a DEVap cooler demonstrated 33.3% and 23.5% lower annual accumulated indoor PM10 concentrations than the reference system, respectively. Similarly, the annual accumulated indoor PM2.5 concentration was reduced by 16% using the LD-IDECOAS and 17.1% using the VAV with DEVap cooler.

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Efficiency and Eco-Costs of Air Purifiers in Terms of Improving Microbiological Indoor Air Quality in Dwellings—A Case Study

Atmosphere ◽

10.3390/atmos10120742 ◽

2019 ◽

Vol 10 (12) ◽

pp. 742 ◽

Cited By ~ 3

Author(s):

Ewa Brągoszewska ◽

Magdalena Bogacka ◽

Krzysztof Pikoń

Keyword(s):

Air Pollution ◽

Air Quality ◽

Indoor Air Quality ◽

Indoor Air ◽

Pollution Prevention ◽

Average Concentration ◽

Environmental Cost ◽

Bacterial Aerosol ◽

The Impact ◽

Ecological Cost

Air pollution, a by-product of economic growth, generates an enormous environmental cost in Poland. The issue of healthy living spaces and indoor air quality (IAQ) is a global concern because people spend approximately 90% of their time indoors. An increasingly popular method to improve IAQ is to use air purifiers (APs). Indoor air is often polluted by bioaerosols (e.g., viruses, bacteria, fungi), which are a major concern for public health. This work presents research on culturable bacterial aerosol (CBA) samples collected from dwellings with or without active APs during the 2019 summer season. The CBA samples were collected using a six-stage Andersen cascade impactor (ACI). The CBA concentrations were expressed as Colony Forming Units (CFU) per cubic metre of air. The average concentration of CBA in dwellings when the AP was active was 450–570 CFU/m3, whereas the average concentration when the AP was not active was 920–1000 CFU/m3. IAQ, when the APs were active, was on average almost 50% better than in cases where there were no procedures to decrease the concentration of air pollutants. Moreover, the obtained results of the particle size distribution (PSD) of CBA indicate that the use of APs reduced the proportion of the respirable fraction (the particles < 3.3 µm) by about 16%. Life cycle assessment (LCA) was used to assess the ecological cost of air purification. Our conceptual approach addresses the impact of indoor air pollution on human health and estimates the ecological cost of APs and air pollution prevention policies.

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