TY - JOUR
T1 - The effect of the number of fibers in hollow fiber membrane modules for NOx absorption
AU - Kartohardjono, Sutrasno
AU - Rizky, Mohamad Sofwan
AU - Karamah, Eva Fathul
AU - Lau, Woei Jye
N1 - Funding Information:
The authors wish to acknowledge that they received financial support for this study from the PDUPT Project via Directorate of Research and Services Universitas Indonesia through Contract No. NKB-1665/UN2.R3.1/HKP.05.00/ 2019.
Funding Information:
The authors wish to acknowledge that they received financial support for this study from the PDUPT Project via Directorate of Research and Services Universitas Indonesia through Contract No. NKB-1665/UN2. R3.1/HKP.05.00/ 2019.
Publisher Copyright:
© 2020 Faculty of Engineering, Universitas Indonesia.
PY - 2020/1/1
Y1 - 2020/1/1
N2 - As a type of gas that contributes to air pollution, nitrogen oxide (NOx) has harmful effects on humans and the environment. Among several types of NOx, nitric oxide (NO) and nitrogen dioxide (NO2) are most commonly found in air. The utilization of membranes as reactors is a system that combines chemical reactions with the separation process through membranes to increase the conversion of the reaction. This study investigated the absorption process by utilizing a hollow fiber membrane module (polysulfone) as a bubble reactor with H2O2 (0.5 wt. %) and HNO3 (0.5M) as the absorbent. NOx feed gas was flown into the tube side of the membrane; the shell side was filled with static H2O2 and HNO3 and the shell input and the tube output flow were closed to create gas bubbles. The experimental results showed that the absorption efficiency increased, but the mass transfer coefficient and flux decreased as the number of fibers in the membrane module increased at the same feed gas flow rate. The NOx loading is relatively constant as the amount of fiber in the membrane module increased at the same feed gas flow rate. The experimental results also showed that the mass transfer coefficient, flux, and NOx loading increased with increasing feed gas flow rate, but the absorption efficiency decreased when using the same number of fibers in the membrane module. The maximum NOx absorption efficiency achieved in this study was 94.6% at the feed gas flow rate of 0.1 L/min, using a membrane module with 48 fibers.
AB - As a type of gas that contributes to air pollution, nitrogen oxide (NOx) has harmful effects on humans and the environment. Among several types of NOx, nitric oxide (NO) and nitrogen dioxide (NO2) are most commonly found in air. The utilization of membranes as reactors is a system that combines chemical reactions with the separation process through membranes to increase the conversion of the reaction. This study investigated the absorption process by utilizing a hollow fiber membrane module (polysulfone) as a bubble reactor with H2O2 (0.5 wt. %) and HNO3 (0.5M) as the absorbent. NOx feed gas was flown into the tube side of the membrane; the shell side was filled with static H2O2 and HNO3 and the shell input and the tube output flow were closed to create gas bubbles. The experimental results showed that the absorption efficiency increased, but the mass transfer coefficient and flux decreased as the number of fibers in the membrane module increased at the same feed gas flow rate. The NOx loading is relatively constant as the amount of fiber in the membrane module increased at the same feed gas flow rate. The experimental results also showed that the mass transfer coefficient, flux, and NOx loading increased with increasing feed gas flow rate, but the absorption efficiency decreased when using the same number of fibers in the membrane module. The maximum NOx absorption efficiency achieved in this study was 94.6% at the feed gas flow rate of 0.1 L/min, using a membrane module with 48 fibers.
KW - Absorption efficiency
KW - Hollow fiber
KW - Mass transfer coefficient
KW - NO loading
UR - http://www.scopus.com/inward/record.url?scp=85085175694&partnerID=8YFLogxK
U2 - 10.14716/ijtech.v11i2.3616
DO - 10.14716/ijtech.v11i2.3616
M3 - Article
AN - SCOPUS:85085175694
VL - 11
SP - 269
EP - 277
JO - International Journal of Technology
JF - International Journal of Technology
SN - 2086-9614
IS - 2
M1 - 3616
ER -