The effect of the number of fibers in hollow fiber membrane modules for NOx absorption

Sutrasno Kartohardjono, Mohamad Sofwan Rizky, Eva Fathul Karamah, Woei Jye Lau

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Article number3616
Pages (from-to)269-277
Number of pages9
JournalInternational Journal of Technology
Volume11
Issue number2
DOIs
Publication statusPublished - 1 Jan 2020

Keywords

  • Absorption efficiency
  • Hollow fiber
  • Mass transfer coefficient
  • NO loading

Fingerprint Dive into the research topics of 'The effect of the number of fibers in hollow fiber membrane modules for NOx absorption'. Together they form a unique fingerprint.

  • Cite this