Measurement of gas holdup and mass transfer in a bubble column by using electrical resistance tomography (ERT)

Gas dispersion performance and gas hold-up in a bubble column was investigated by using electrical resistance tomography (ERT). Experiments were carried out to visualize flow pattern and gas hold-up at different gas velocity, type of impeller and speed of impeller. In this study, cylindrical bubble-...

Full description

Bibliographic Details
Main Authors:	Nur Tantiyani Ali Othman, Nur Syamimi Wahid
Format:	Article
Language:	English
Published:	Penerbit Universiti Kebangsaan Malaysia 2017
Online Access:	http://journalarticle.ukm.my/11663/ http://journalarticle.ukm.my/11663/ http://journalarticle.ukm.my/11663/1/7.pdf

id	ukm-11663
recordtype	eprints
spelling	ukm-116632018-05-18T00:48:09Z http://journalarticle.ukm.my/11663/ Measurement of gas holdup and mass transfer in a bubble column by using electrical resistance tomography (ERT) Nur Tantiyani Ali Othman, Nur Syamimi Wahid, Gas dispersion performance and gas hold-up in a bubble column was investigated by using electrical resistance tomography (ERT). Experiments were carried out to visualize flow pattern and gas hold-up at different gas velocity, type of impeller and speed of impeller. In this study, cylindrical bubble-column with a diameter of 13.5 cm and a height of 97.5 cm, made of glass that was mounted with four planes of 16 stainless steel electrodes are connected to an ITS P2000 ERT system. The column was equipped with perforated plate consisting of five holes and each has internal diameter of 3.0 mm. The effect of four parameters; gas flowrate, speed of impeller, 2 types of impeller; Rushton and Lightnin impeller, and three types of gas; oxygen, hydrogen and nitrogen gas on the gas dispersion performance in the bubble column were investigated. It was observed that the gas dispersion rate is increased with increasing gas density where the oxygen gas has the highest of dispersion gas rate as compared to the others gas. The gas hold-up was determined from the correlation method to estimate the transition velocity and dispersion of gas in a bubble column. The results showed that with increasing of the superficial gas velocity, the total gas hold-up increases. Besides, the gas hold-up increased due to decreasing of gas density. It can be concluding that the optimum mixing condition was obtained by using Lightnin A320 impeller with the speed rate at 250 rpm. Penerbit Universiti Kebangsaan Malaysia 2017 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/11663/1/7.pdf Nur Tantiyani Ali Othman, and Nur Syamimi Wahid, (2017) Measurement of gas holdup and mass transfer in a bubble column by using electrical resistance tomography (ERT). Jurnal Kejuruteraan, 29 (2). pp. 113-119. ISSN 0128-0198 http://www.ukm.my/jkukm/in-press-volume-292-2017/
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	Gas dispersion performance and gas hold-up in a bubble column was investigated by using electrical resistance tomography (ERT). Experiments were carried out to visualize flow pattern and gas hold-up at different gas velocity, type of impeller and speed of impeller. In this study, cylindrical bubble-column with a diameter of 13.5 cm and a height of 97.5 cm, made of glass that was mounted with four planes of 16 stainless steel electrodes are connected to an ITS P2000 ERT system. The column was equipped with perforated plate consisting of five holes and each has internal diameter of 3.0 mm. The effect of four parameters; gas flowrate, speed of impeller, 2 types of impeller; Rushton and Lightnin impeller, and three types of gas; oxygen, hydrogen and nitrogen gas on the gas dispersion performance in the bubble column were investigated. It was observed that the gas dispersion rate is increased with increasing gas density where the oxygen gas has the highest of dispersion gas rate as compared to the others gas. The gas hold-up was determined from the correlation method to estimate the transition velocity and dispersion of gas in a bubble column. The results showed that with increasing of the superficial gas velocity, the total gas hold-up increases. Besides, the gas hold-up increased due to decreasing of gas density. It can be concluding that the optimum mixing condition was obtained by using Lightnin A320 impeller with the speed rate at 250 rpm.
format	Article
author	Nur Tantiyani Ali Othman, Nur Syamimi Wahid,
spellingShingle	Nur Tantiyani Ali Othman, Nur Syamimi Wahid, Measurement of gas holdup and mass transfer in a bubble column by using electrical resistance tomography (ERT)
author_facet	Nur Tantiyani Ali Othman, Nur Syamimi Wahid,
author_sort	Nur Tantiyani Ali Othman,
title	Measurement of gas holdup and mass transfer in a bubble column by using electrical resistance tomography (ERT)
title_short	Measurement of gas holdup and mass transfer in a bubble column by using electrical resistance tomography (ERT)
title_full	Measurement of gas holdup and mass transfer in a bubble column by using electrical resistance tomography (ERT)
title_fullStr	Measurement of gas holdup and mass transfer in a bubble column by using electrical resistance tomography (ERT)
title_full_unstemmed	Measurement of gas holdup and mass transfer in a bubble column by using electrical resistance tomography (ERT)
title_sort	measurement of gas holdup and mass transfer in a bubble column by using electrical resistance tomography (ert)
publisher	Penerbit Universiti Kebangsaan Malaysia
publishDate	2017
url	http://journalarticle.ukm.my/11663/ http://journalarticle.ukm.my/11663/ http://journalarticle.ukm.my/11663/1/7.pdf
first_indexed	2023-09-18T20:00:51Z
last_indexed	2023-09-18T20:00:51Z
_version_	1777406838505996288

Measurement of gas holdup and mass transfer in a bubble column by using electrical resistance tomography (ERT)

Similar Items