Transversal Submerged Membrane Contactor for Simultaneous Absorption and Desorption of CO2 during Natural Gas Sweetening Process

U. W.R. Siagian, Y. Rahmawati, K. Khoiruddin, A. N. Hakim, I. G. Wenten*

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

Abstract

In this work, a unique transversal submerged membrane contactor is used for CO2 removal. The developed configuration is aimed to provide the possibility to perform simultaneous absorption and desorption of carbon dioxide in a single module. In addition, this configuration is expected to reduce the solvent circulation which is the major obstacle encountered in separated absorption-desorption unit. The module contains a number of polypropylene hollow fiber membranes arranged perpendicularly to the longitudinal axis in which the fibers are submerged into a solvent. Pure water which is placed in the shell of the module is used as the solvent. The effects of operating parameters such as gas flow rate (40-80 ml/min) and operating time on membrane performance are investigated. In addition, the simultaneous absorption-desorption process is compared to the separated ones. Results revealed that CO2 removal is significantly affected by the gas flow rate. The optimum gas flow rate is 60 ml/min (vacuum pressure of 60.5 kPa) with >80% CO2 absorption and desorption efficiencies. During a long-term operation, the separation efficiencies are decreased after 200 minutes of operation which may be associated with membrane wetting phenomenon. The simultaneous absorption-desorption process shows a higher separation efficiency rather than the separated process.

Original languageEnglish
Article number012013
JournalIOP Conference Series: Materials Science and Engineering
Volume395
Issue number1
DOIs
Publication statusPublished - 2018
Event7th Nanoscience and Nanotechnology Symposium, NNS 2017 - Bandung, Indonesia
Duration: 22 Oct 201724 Oct 2017

Fingerprint

Dive into the research topics of 'Transversal Submerged Membrane Contactor for Simultaneous Absorption and Desorption of CO2 during Natural Gas Sweetening Process'. Together they form a unique fingerprint.

Cite this