Hollow Fiber Membrane Modules for NOx Removal using a Mixture of NaClO3 and NaOH Solutions in the Shell Side as Absorbents
Nitrogen oxide (NOx) is one of the polluting gases harmful to humans and the environment. Nitrous oxide gas is mostly found in air, namely nitrogen monoxide (NO) and nitrogen dioxide (NO2). Nitrogen oxide gas in the air, which mostly comes from exhaust gases, needs to be reduced to minimize the...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Universitas Indonesia
2021-10-01
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| Series: | International Journal of Technology |
| Subjects: | |
| Online Access: | https://ijtech.eng.ui.ac.id/article/view/4408 |
| _version_ | 1797970990155694080 |
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| author | Eva Fathul Karamah Dwira S. Arbi Imanuel Bagas Sutrasno Kartohardjono |
| author_facet | Eva Fathul Karamah Dwira S. Arbi Imanuel Bagas Sutrasno Kartohardjono |
| author_sort | Eva Fathul Karamah |
| collection | DOAJ |
| description | Nitrogen
oxide (NOx) is one of the polluting gases harmful to humans and the environment.
Nitrous oxide gas is mostly found in air, namely nitrogen monoxide (NO) and
nitrogen dioxide (NO2). Nitrogen oxide gas in the air, which mostly
comes from exhaust gases, needs to be reduced to minimize the threats to humans
and the environment and comply with applicable regulations regarding hazards.
The absorption process with a membrane contactor is an alternative to reduce
NOx concentrations in the air. This study evaluates the hollow fiber membrane
modules' performance in the NOx absorption process using sodium chlorate (NaClO3)
and sodium hydroxide (NaOH) together as an absorbent solution. Based on the
experimental results, the NOx reduction efficiency increased from 96.3 to 99.2%
and from 99.4 to 99.7% with an increase in the concentration of NaClO3
from 0.02 to 0.05 M and the number of fibers in the membrane module from 50 to
150. However, the absorption efficiency declined from 99.7 to 99.2% by
increasing the feed gas flow rate from 100 to 200 mL/min. The highest value of
NOx reduction efficiency, the overall mass transfer coefficient, the flux, and
the NOx loading obtained in the study were 99.7%, 0.01743 cm s-1,
9.510´10-8
mmole cm-2 s-1, and 0.026 mole NOx/mole NaClO3,
respectively. |
| first_indexed | 2024-04-11T03:25:38Z |
| format | Article |
| id | doaj.art-432d4c524e7549a6acada27106a43ae9 |
| institution | Directory Open Access Journal |
| issn | 2086-9614 2087-2100 |
| language | English |
| last_indexed | 2024-04-11T03:25:38Z |
| publishDate | 2021-10-01 |
| publisher | Universitas Indonesia |
| record_format | Article |
| series | International Journal of Technology |
| spelling | doaj.art-432d4c524e7549a6acada27106a43ae92023-01-02T07:36:42ZengUniversitas IndonesiaInternational Journal of Technology2086-96142087-21002021-10-0112469069910.14716/ijtech.v12i4.44084408Hollow Fiber Membrane Modules for NOx Removal using a Mixture of NaClO3 and NaOH Solutions in the Shell Side as AbsorbentsEva Fathul Karamah0Dwira S. Arbi1Imanuel Bagas2Sutrasno Kartohardjono3Process Intensification Laboratory, Department of Chemical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok 16424, IndonesiaProcess Intensification Laboratory, Department of Chemical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok 16424, IndonesiaProcess Intensification Laboratory, Department of Chemical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok 16424, IndonesiaProcess Intensification Laboratory, Department of Chemical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok 16424, IndonesiaNitrogen oxide (NOx) is one of the polluting gases harmful to humans and the environment. Nitrous oxide gas is mostly found in air, namely nitrogen monoxide (NO) and nitrogen dioxide (NO2). Nitrogen oxide gas in the air, which mostly comes from exhaust gases, needs to be reduced to minimize the threats to humans and the environment and comply with applicable regulations regarding hazards. The absorption process with a membrane contactor is an alternative to reduce NOx concentrations in the air. This study evaluates the hollow fiber membrane modules' performance in the NOx absorption process using sodium chlorate (NaClO3) and sodium hydroxide (NaOH) together as an absorbent solution. Based on the experimental results, the NOx reduction efficiency increased from 96.3 to 99.2% and from 99.4 to 99.7% with an increase in the concentration of NaClO3 from 0.02 to 0.05 M and the number of fibers in the membrane module from 50 to 150. However, the absorption efficiency declined from 99.7 to 99.2% by increasing the feed gas flow rate from 100 to 200 mL/min. The highest value of NOx reduction efficiency, the overall mass transfer coefficient, the flux, and the NOx loading obtained in the study were 99.7%, 0.01743 cm s-1, 9.510´10-8 mmole cm-2 s-1, and 0.026 mole NOx/mole NaClO3, respectively.https://ijtech.eng.ui.ac.id/article/view/4408absorption efficiencyhollow fiber membrane modulenaclo3naohnox |
| spellingShingle | Eva Fathul Karamah Dwira S. Arbi Imanuel Bagas Sutrasno Kartohardjono Hollow Fiber Membrane Modules for NOx Removal using a Mixture of NaClO3 and NaOH Solutions in the Shell Side as Absorbents International Journal of Technology absorption efficiency hollow fiber membrane module naclo3 naoh nox |
| title | Hollow Fiber Membrane Modules for NOx Removal using a Mixture of NaClO3 and NaOH Solutions in the Shell Side as Absorbents |
| title_full | Hollow Fiber Membrane Modules for NOx Removal using a Mixture of NaClO3 and NaOH Solutions in the Shell Side as Absorbents |
| title_fullStr | Hollow Fiber Membrane Modules for NOx Removal using a Mixture of NaClO3 and NaOH Solutions in the Shell Side as Absorbents |
| title_full_unstemmed | Hollow Fiber Membrane Modules for NOx Removal using a Mixture of NaClO3 and NaOH Solutions in the Shell Side as Absorbents |
| title_short | Hollow Fiber Membrane Modules for NOx Removal using a Mixture of NaClO3 and NaOH Solutions in the Shell Side as Absorbents |
| title_sort | hollow fiber membrane modules for nox removal using a mixture of naclo3 and naoh solutions in the shell side as absorbents |
| topic | absorption efficiency hollow fiber membrane module naclo3 naoh nox |
| url | https://ijtech.eng.ui.ac.id/article/view/4408 |
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