Comprehensive Analysis of Foulants in an Ultrafiltration Membrane Used for the Treatment of Bleach Plant Effluent in a Sulfite Pulp Mill

Fouling is a major obstacle in the introduction of membrane processes in new applications in the pulping industry. Due to the complex nature of the feed solutions, complementary analysis methods are usually needed to identify the substances involved. Four different methods were used for the comprehe...

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Main Authors: Gregor Rudolph, Basel Al-Rudainy, Johan Thuvander, Ann-Sofi Jönsson
Format: Article
Language:English
Published: MDPI AG 2021-03-01
Series:Membranes
Subjects:
Online Access:https://www.mdpi.com/2077-0375/11/3/201
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author Gregor Rudolph
Basel Al-Rudainy
Johan Thuvander
Ann-Sofi Jönsson
author_facet Gregor Rudolph
Basel Al-Rudainy
Johan Thuvander
Ann-Sofi Jönsson
author_sort Gregor Rudolph
collection DOAJ
description Fouling is a major obstacle in the introduction of membrane processes in new applications in the pulping industry. Due to the complex nature of the feed solutions, complementary analysis methods are usually needed to identify the substances involved. Four different methods were used for the comprehensive analysis of a membrane removed from an ultrafiltration plant treating alkaline bleach plant effluent in a sulfite pulp mill to identify the substances causing fouling. Magnesium was detected both on the membrane surface and in the nonwoven membrane backing and a small amount of polysaccharides was detected after acid hydrolysis of the fouled membrane. This study provides information on foulants, which can be used to improve processing conditions and cleaning protocols and thus the membrane performance in pulp mill separation processes. It also provides an overview of the usefulness of various analytical methods.
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spelling doaj.art-06152200ff8e45958129bd61f3b557692023-11-21T10:17:39ZengMDPI AGMembranes2077-03752021-03-0111320110.3390/membranes11030201Comprehensive Analysis of Foulants in an Ultrafiltration Membrane Used for the Treatment of Bleach Plant Effluent in a Sulfite Pulp MillGregor Rudolph0Basel Al-Rudainy1Johan Thuvander2Ann-Sofi Jönsson3Department of Chemical Engineering, Lund University, P.O. Box 124, SE-221 00 Lund, SwedenDepartment of Chemical Engineering, Lund University, P.O. Box 124, SE-221 00 Lund, SwedenDepartment of Food Technology, Engineering and Nutrition, Lund University, P.O. Box 124, SE-221 00 Lund, SwedenDepartment of Chemical Engineering, Lund University, P.O. Box 124, SE-221 00 Lund, SwedenFouling is a major obstacle in the introduction of membrane processes in new applications in the pulping industry. Due to the complex nature of the feed solutions, complementary analysis methods are usually needed to identify the substances involved. Four different methods were used for the comprehensive analysis of a membrane removed from an ultrafiltration plant treating alkaline bleach plant effluent in a sulfite pulp mill to identify the substances causing fouling. Magnesium was detected both on the membrane surface and in the nonwoven membrane backing and a small amount of polysaccharides was detected after acid hydrolysis of the fouled membrane. This study provides information on foulants, which can be used to improve processing conditions and cleaning protocols and thus the membrane performance in pulp mill separation processes. It also provides an overview of the usefulness of various analytical methods.https://www.mdpi.com/2077-0375/11/3/201membrane foulingligninhemicellulosespolymeric membraneultrafiltrationmagnesium
spellingShingle Gregor Rudolph
Basel Al-Rudainy
Johan Thuvander
Ann-Sofi Jönsson
Comprehensive Analysis of Foulants in an Ultrafiltration Membrane Used for the Treatment of Bleach Plant Effluent in a Sulfite Pulp Mill
Membranes
membrane fouling
lignin
hemicelluloses
polymeric membrane
ultrafiltration
magnesium
title Comprehensive Analysis of Foulants in an Ultrafiltration Membrane Used for the Treatment of Bleach Plant Effluent in a Sulfite Pulp Mill
title_full Comprehensive Analysis of Foulants in an Ultrafiltration Membrane Used for the Treatment of Bleach Plant Effluent in a Sulfite Pulp Mill
title_fullStr Comprehensive Analysis of Foulants in an Ultrafiltration Membrane Used for the Treatment of Bleach Plant Effluent in a Sulfite Pulp Mill
title_full_unstemmed Comprehensive Analysis of Foulants in an Ultrafiltration Membrane Used for the Treatment of Bleach Plant Effluent in a Sulfite Pulp Mill
title_short Comprehensive Analysis of Foulants in an Ultrafiltration Membrane Used for the Treatment of Bleach Plant Effluent in a Sulfite Pulp Mill
title_sort comprehensive analysis of foulants in an ultrafiltration membrane used for the treatment of bleach plant effluent in a sulfite pulp mill
topic membrane fouling
lignin
hemicelluloses
polymeric membrane
ultrafiltration
magnesium
url https://www.mdpi.com/2077-0375/11/3/201
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