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Optimization of a co2 backpulsing method for increasing the permeate flux in cold microfiltration of skim milk: a pilot-scale study

The major challenge associated with cold microfiltration (MF) of skim milk is the decrease in permeate flux, caused by fouling. To address this, a novel CO2 backpulsing technique capable to counteract membrane fouling was developed and optimized. Five portable CO2 backpulsing ports were attached to...

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Main Authors: Tan, Teng Ju, Moraru, Carmen
Format: Conference or Workshop Item
Language:English
English
Published: 2014
Subjects:
T Technology (General)
Online Access:http://irep.iium.edu.my/40168/3/optimization_of_a_co2.pdf
http://irep.iium.edu.my/40168/4/opimization_c02.pdf
http://irep.iium.edu.my/40168/
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spelling my.iium.irep.40168 http://irep.iium.edu.my/40168/ Optimization of a co2 backpulsing method for increasing the permeate flux in cold microfiltration of skim milk: a pilot-scale study Tan, Teng Ju Moraru, Carmen T Technology (General) The major challenge associated with cold microfiltration (MF) of skim milk is the decrease in permeate flux, caused by fouling. To address this, a novel CO2 backpulsing technique capable to counteract membrane fouling was developed and optimized. Five portable CO2 backpulsing ports were attached to the membrane housing. Five different combinations of CO2 backpulsing frequencies and durations were tested. The MF experiments were performed at a temperature of 6 ± 1°C, a cross-flow velocity of 3.8 m/s and a transmembrane pressure of 83 kPa. A series of 45 min experiments were first performed. The combination of 3 ports at 120s frequency with 1s duration (120s/1s) produced the highest flux: 46.09 L/m2h at 45 min. In a series of three hour MF runs, permeate flux from the treatments with 3 ports at 120s/1s and 5 ports at 180s/1s was significantly higher than for the control. After 3 h, the flux for the control was 25.85 ± 0.99 L/m2h, while for the optimized CO2 backpulsing experiment, a flux of 30.02 ± 0.48 L/m2h was obtained. In addition, a smaller drop in flux was observed for the optimized CO2 backpulsing run (15.57% after 3 h) as compared to the control (29.83% after 3 h). Furthermore, the protein transmission into permeate was also the highest in treatment of the 3 ports at 120s/1s. Another study was conducted to evaluate the performances of optimized MF and control at a higher cross-flow velocity (6 m/s). The permeate flux after 3 h for the optimized MF was 82.32 ± 4.42 L/m2h while for control was 71.39 ± 4.21 L/m2h. The developed CO2 backpulsing technique is an efficient and affordable solution to mitigate fouling and thus increase the permeate flux in cold MF of skim milk, and could also be applied to other cold microfiltration processes, including filtration of juice, or heat sensitive fluids that require cold processing. 2014-06-11 Conference or Workshop Item NonPeerReviewed application/pdf en http://irep.iium.edu.my/40168/3/optimization_of_a_co2.pdf application/pdf en http://irep.iium.edu.my/40168/4/opimization_c02.pdf Tan, Teng Ju and Moraru, Carmen (2014) Optimization of a co2 backpulsing method for increasing the permeate flux in cold microfiltration of skim milk: a pilot-scale study. In: International Research, Invention and Innovation Exhibition 2014 (IRIIE2014), 11th -13th June 2014, Cultural Activity Center (CAC), Internatioanal Islamic University Malaysia. (Unpublished)
institution Universiti Islam Antarabangsa Malaysia
building IIUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider International Islamic University Malaysia
content_source IIUM Repository (IREP)
url_provider http://irep.iium.edu.my/
language English
English
topic T Technology (General)
spellingShingle T Technology (General)
Tan, Teng Ju
Moraru, Carmen
Optimization of a co2 backpulsing method for increasing the permeate flux in cold microfiltration of skim milk: a pilot-scale study
description The major challenge associated with cold microfiltration (MF) of skim milk is the decrease in permeate flux, caused by fouling. To address this, a novel CO2 backpulsing technique capable to counteract membrane fouling was developed and optimized. Five portable CO2 backpulsing ports were attached to the membrane housing. Five different combinations of CO2 backpulsing frequencies and durations were tested. The MF experiments were performed at a temperature of 6 ± 1°C, a cross-flow velocity of 3.8 m/s and a transmembrane pressure of 83 kPa. A series of 45 min experiments were first performed. The combination of 3 ports at 120s frequency with 1s duration (120s/1s) produced the highest flux: 46.09 L/m2h at 45 min. In a series of three hour MF runs, permeate flux from the treatments with 3 ports at 120s/1s and 5 ports at 180s/1s was significantly higher than for the control. After 3 h, the flux for the control was 25.85 ± 0.99 L/m2h, while for the optimized CO2 backpulsing experiment, a flux of 30.02 ± 0.48 L/m2h was obtained. In addition, a smaller drop in flux was observed for the optimized CO2 backpulsing run (15.57% after 3 h) as compared to the control (29.83% after 3 h). Furthermore, the protein transmission into permeate was also the highest in treatment of the 3 ports at 120s/1s. Another study was conducted to evaluate the performances of optimized MF and control at a higher cross-flow velocity (6 m/s). The permeate flux after 3 h for the optimized MF was 82.32 ± 4.42 L/m2h while for control was 71.39 ± 4.21 L/m2h. The developed CO2 backpulsing technique is an efficient and affordable solution to mitigate fouling and thus increase the permeate flux in cold MF of skim milk, and could also be applied to other cold microfiltration processes, including filtration of juice, or heat sensitive fluids that require cold processing.
format Conference or Workshop Item
author Tan, Teng Ju
Moraru, Carmen
author_facet Tan, Teng Ju
Moraru, Carmen
author_sort Tan, Teng Ju
title Optimization of a co2 backpulsing method for increasing the permeate flux in cold microfiltration of skim milk: a pilot-scale study
title_short Optimization of a co2 backpulsing method for increasing the permeate flux in cold microfiltration of skim milk: a pilot-scale study
title_full Optimization of a co2 backpulsing method for increasing the permeate flux in cold microfiltration of skim milk: a pilot-scale study
title_fullStr Optimization of a co2 backpulsing method for increasing the permeate flux in cold microfiltration of skim milk: a pilot-scale study
title_full_unstemmed Optimization of a co2 backpulsing method for increasing the permeate flux in cold microfiltration of skim milk: a pilot-scale study
title_sort optimization of a co2 backpulsing method for increasing the permeate flux in cold microfiltration of skim milk: a pilot-scale study
publishDate 2014
url http://irep.iium.edu.my/40168/3/optimization_of_a_co2.pdf
http://irep.iium.edu.my/40168/4/opimization_c02.pdf
http://irep.iium.edu.my/40168/
_version_ 1643616776803581952
score 13.211869

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