Removal of Carbon Dioxide from Indoor Air Using Nanofluid Absorption Solution
Background and purpose: Human health is negatively affected by increase in concentration of carbon dioxide in indoor air due to the lack of proper ventilation. The aim of this study was to remove carbon dioxide from a closed space using sodium hydroxide nanofluid and determining the effect of absorb...
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| Format: | Article |
| Language: | English |
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Mazandaran University of Medical Sciences
2023-09-01
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| Series: | Journal of Mazandaran University of Medical Sciences |
| Subjects: | |
| Online Access: | http://jmums.mazums.ac.ir/article-1-19258-en.pdf |
| _version_ | 1797542625110130688 |
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| author | Ramazan Ali Dianati Tilaki Saeedeh Shabantabar Shouraki Esmaeil Babanejad Arimi Bizhan Shabankhani |
| author_facet | Ramazan Ali Dianati Tilaki Saeedeh Shabantabar Shouraki Esmaeil Babanejad Arimi Bizhan Shabankhani |
| author_sort | Ramazan Ali Dianati Tilaki |
| collection | DOAJ |
| description | Background and purpose: Human health is negatively affected by increase in concentration of carbon dioxide in indoor air due to the lack of proper ventilation. The aim of this study was to remove carbon dioxide from a closed space using sodium hydroxide nanofluid and determining the effect of absorbent concentration, carbon dioxide concentration, and titanium dioxide nanoparticles.
Materials and methods: The experiments were conducted in a closed chamber on a laboratory scale. An air suction pump was connected to the absorption reactor and the carbon dioxide measuring device was installed inside the chamber. By injecting carbon dioxide gas inside the chamber, different concentrations in the range of 500, 2000 and 5000 ppm were created. Sodium hydroxide absorbent solution at 0.1, 0.2, and 0.4% were examined. Titanium dioxide nanoparticles (0.008%) and surfactant (0.003%) were used to prepare nanofluids. The absorption fluids’ pH, electrical conductivity, and total inorganic carbon (TIC) were measured before and after carbon dioxide absorption.
Results: By using 0.4% sodium hydroxide solution containing 0.008% titanium dioxide nanoparticles, the carbon dioxide removal efficiency at 500 and 5000 ppm were 72% and 44%, respectively, that were higher than the solution without nanoparticles (20% and 10%, respectively). At 5000 ppm carbon dioxide, increasing the concentration of absorption solution from 0.1 to 0.4% doubled the removal efficiency. The average amount of total inorganic carbon (TIC) in nanofluids increased by about 20% compared to the base fluids. The average reduction of EC in nanofluid was about 25% higher than the base fluid. The average reduction in pH value was less than one unit.
Conclusion: Sodium hydroxide nanofluid containing 0.008% of titanium dioxide nanoparticles is effective in removing carbon dioxide from the air. |
| first_indexed | 2024-03-10T13:33:12Z |
| format | Article |
| id | doaj.art-b163074aaaf6486f9c5bd2eb72c18373 |
| institution | Directory Open Access Journal |
| issn | 1735-9260 1735-9279 |
| language | English |
| last_indexed | 2024-03-10T13:33:12Z |
| publishDate | 2023-09-01 |
| publisher | Mazandaran University of Medical Sciences |
| record_format | Article |
| series | Journal of Mazandaran University of Medical Sciences |
| spelling | doaj.art-b163074aaaf6486f9c5bd2eb72c183732023-11-21T07:44:41ZengMazandaran University of Medical SciencesJournal of Mazandaran University of Medical Sciences1735-92601735-92792023-09-0133224117128Removal of Carbon Dioxide from Indoor Air Using Nanofluid Absorption SolutionRamazan Ali Dianati Tilaki0Saeedeh Shabantabar Shouraki1Esmaeil Babanejad Arimi2Bizhan Shabankhani3 Associate Professor, Department of Environmental Health Engineering, Faculty of Health, Mazandaran University of Medical Sciences, Sari, Iran MSc Student in Environmental Health Engineering, Faculty of Health, Mazandaran University of Medical Sciences, Sari, Iran Assistant Professor, Department of Environmental Health Engineering, Faculty of Health, Mazandaran University of Medical Sciences, Sari, Iran Assistant Professor, Department of Epidemiology and Biostatistics, Faculty of Health, Mazandaran University of Medical Sciences, Sari, Iran Background and purpose: Human health is negatively affected by increase in concentration of carbon dioxide in indoor air due to the lack of proper ventilation. The aim of this study was to remove carbon dioxide from a closed space using sodium hydroxide nanofluid and determining the effect of absorbent concentration, carbon dioxide concentration, and titanium dioxide nanoparticles. Materials and methods: The experiments were conducted in a closed chamber on a laboratory scale. An air suction pump was connected to the absorption reactor and the carbon dioxide measuring device was installed inside the chamber. By injecting carbon dioxide gas inside the chamber, different concentrations in the range of 500, 2000 and 5000 ppm were created. Sodium hydroxide absorbent solution at 0.1, 0.2, and 0.4% were examined. Titanium dioxide nanoparticles (0.008%) and surfactant (0.003%) were used to prepare nanofluids. The absorption fluids’ pH, electrical conductivity, and total inorganic carbon (TIC) were measured before and after carbon dioxide absorption. Results: By using 0.4% sodium hydroxide solution containing 0.008% titanium dioxide nanoparticles, the carbon dioxide removal efficiency at 500 and 5000 ppm were 72% and 44%, respectively, that were higher than the solution without nanoparticles (20% and 10%, respectively). At 5000 ppm carbon dioxide, increasing the concentration of absorption solution from 0.1 to 0.4% doubled the removal efficiency. The average amount of total inorganic carbon (TIC) in nanofluids increased by about 20% compared to the base fluids. The average reduction of EC in nanofluid was about 25% higher than the base fluid. The average reduction in pH value was less than one unit. Conclusion: Sodium hydroxide nanofluid containing 0.008% of titanium dioxide nanoparticles is effective in removing carbon dioxide from the air.http://jmums.mazums.ac.ir/article-1-19258-en.pdfnanofluidsodium hydroxideindoor aircarbon dioxide |
| spellingShingle | Ramazan Ali Dianati Tilaki Saeedeh Shabantabar Shouraki Esmaeil Babanejad Arimi Bizhan Shabankhani Removal of Carbon Dioxide from Indoor Air Using Nanofluid Absorption Solution Journal of Mazandaran University of Medical Sciences nanofluid sodium hydroxide indoor air carbon dioxide |
| title | Removal of Carbon Dioxide from Indoor Air Using Nanofluid
Absorption Solution |
| title_full | Removal of Carbon Dioxide from Indoor Air Using Nanofluid
Absorption Solution |
| title_fullStr | Removal of Carbon Dioxide from Indoor Air Using Nanofluid
Absorption Solution |
| title_full_unstemmed | Removal of Carbon Dioxide from Indoor Air Using Nanofluid
Absorption Solution |
| title_short | Removal of Carbon Dioxide from Indoor Air Using Nanofluid
Absorption Solution |
| title_sort | removal of carbon dioxide from indoor air using nanofluid absorption solution |
| topic | nanofluid sodium hydroxide indoor air carbon dioxide |
| url | http://jmums.mazums.ac.ir/article-1-19258-en.pdf |
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