Design and evaluation of microbubble-based cleaning process of membranes fouled by oily wastewater

As an alternative for the conventional clean-in-place (CIP) process for microfiltration membranes, a novel cleaning technology based on microbubbles has been recently available. Microbubbles are known for their ability to generate pressure waves through shrinking and subsequent self-collapsing pheno...

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Bibliographic Details
Main Author:	Velásquez D., Velásquez D.
Other Authors:	Acosta, Adela
Format:	Tesis
Language:	Inglés
Published:	Zamorano: Escuela Agrícola Panamericana, 2019. 2019
Subjects:	Clean-in-place Cross-flow filtration, Microfiltration Filtración por flujo cruzado Limpieza In situ Microfiltración
Online Access:	https://bdigital.zamorano.edu/handle/11036/6518

id	ZAMORANO6518
record_format	dspace
spelling	ZAMORANO65182023-03-24T15:04:07Z Design and evaluation of microbubble-based cleaning process of membranes fouled by oily wastewater Velásquez D., Velásquez D. Acosta, Adela Huang, Jen-Yi Valladares, Carolina Clean-in-place Cross-flow filtration, Microfiltration Filtración por flujo cruzado Limpieza In situ Microfiltración As an alternative for the conventional clean-in-place (CIP) process for microfiltration membranes, a novel cleaning technology based on microbubbles has been recently available. Microbubbles are known for their ability to generate pressure waves through shrinking and subsequent self-collapsing phenomenon which causes foulant removal. In addition, they have hydrophobic surfaces which have the potential to attract organic substances like oil. In the present study, the effectiveness of microbubbles in palm oil foulant removal from the membranes in the first two stages of the CIP cleaning process was investigated and compared with the conventional process, which uses water and sodium hydroxide (NaOH) as cleaning agents. Vinylidene Polyfluoride (PVDF) microfiltration membranes of 0.1 μm pore size were fouled with an oil-in-water emulsion (O/W) made of palm oil. The emulsion was recirculated by a laboratory scale filtration system at 7 L/min and 155 kPa of transmembrane pressure (TMP). A 75% flux recovery was observed after the application of microbubbles in the first two steps of the CIP process compared to the 22% flux recovery obtained with the control without microbubbles. The use of microbubbles for membrane cleaning purposes proved to restore the membrane flux to a better performance level. The results of this study suggest that the use of microbubbles is more efficient in foulant detachment compared to the conventional cleaning process. 2019-11-26T04:28:06Z 2019-11-26T04:28:06Z 2019 Thesis https://bdigital.zamorano.edu/handle/11036/6518 eng 54 p. Copyright Escuela Agrícola Panamericana, Zamorano, 2019 http://creativecommons.org/licenses/by-nc-nd/3.0/es openAccess application/pdf application/pdf Zamorano Zamorano: Escuela Agrícola Panamericana, 2019.
institution	Universidad Zamorano
collection	Biblioteca Digital Zamorano
language	Inglés
topic	Clean-in-place Cross-flow filtration, Microfiltration Filtración por flujo cruzado Limpieza In situ Microfiltración
spellingShingle	Clean-in-place Cross-flow filtration, Microfiltration Filtración por flujo cruzado Limpieza In situ Microfiltración Velásquez D., Velásquez D. Design and evaluation of microbubble-based cleaning process of membranes fouled by oily wastewater
description	As an alternative for the conventional clean-in-place (CIP) process for microfiltration membranes, a novel cleaning technology based on microbubbles has been recently available. Microbubbles are known for their ability to generate pressure waves through shrinking and subsequent self-collapsing phenomenon which causes foulant removal. In addition, they have hydrophobic surfaces which have the potential to attract organic substances like oil. In the present study, the effectiveness of microbubbles in palm oil foulant removal from the membranes in the first two stages of the CIP cleaning process was investigated and compared with the conventional process, which uses water and sodium hydroxide (NaOH) as cleaning agents. Vinylidene Polyfluoride (PVDF) microfiltration membranes of 0.1 μm pore size were fouled with an oil-in-water emulsion (O/W) made of palm oil. The emulsion was recirculated by a laboratory scale filtration system at 7 L/min and 155 kPa of transmembrane pressure (TMP). A 75% flux recovery was observed after the application of microbubbles in the first two steps of the CIP process compared to the 22% flux recovery obtained with the control without microbubbles. The use of microbubbles for membrane cleaning purposes proved to restore the membrane flux to a better performance level. The results of this study suggest that the use of microbubbles is more efficient in foulant detachment compared to the conventional cleaning process.
author2	Acosta, Adela
author_facet	Acosta, Adela Velásquez D., Velásquez D.
format	Tesis
author	Velásquez D., Velásquez D.
author_sort	Velásquez D., Velásquez D.
title	Design and evaluation of microbubble-based cleaning process of membranes fouled by oily wastewater
title_short	Design and evaluation of microbubble-based cleaning process of membranes fouled by oily wastewater
title_full	Design and evaluation of microbubble-based cleaning process of membranes fouled by oily wastewater
title_fullStr	Design and evaluation of microbubble-based cleaning process of membranes fouled by oily wastewater
title_full_unstemmed	Design and evaluation of microbubble-based cleaning process of membranes fouled by oily wastewater
title_sort	design and evaluation of microbubble-based cleaning process of membranes fouled by oily wastewater
publisher	Zamorano: Escuela Agrícola Panamericana, 2019.
publishDate	2019
url	https://bdigital.zamorano.edu/handle/11036/6518
work_keys_str_mv	AT velasquezdvelasquezd designandevaluationofmicrobubblebasedcleaningprocessofmembranesfouledbyoilywastewater
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Design and evaluation of microbubble-based cleaning process of membranes fouled by oily wastewater

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