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Impact of Membrane Pore Size on the Clarification Performance of Grape Marc Extract by Microfiltration

The influence of membrane pore size on the permeate flux, fouling mechanism, and rejection of soluble and suspended solids, as well as of phenolics and anthocyanins, in the clarification of grape marc extract by microfiltration (MF) was studied. MF was operated by using three monotubular ceramic mem...

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Autores principales: Mora, Francisca, Pérez, Karla, Quezada, Carolina, Herrera, Carla, Cassano, Alfredo, Ruby-Figueroa, René
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6918468/
https://www.ncbi.nlm.nih.gov/pubmed/31698840
http://dx.doi.org/10.3390/membranes9110146
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author Mora, Francisca
Pérez, Karla
Quezada, Carolina
Herrera, Carla
Cassano, Alfredo
Ruby-Figueroa, René
author_facet Mora, Francisca
Pérez, Karla
Quezada, Carolina
Herrera, Carla
Cassano, Alfredo
Ruby-Figueroa, René
author_sort Mora, Francisca
collection PubMed
description The influence of membrane pore size on the permeate flux, fouling mechanism, and rejection of soluble and suspended solids, as well as of phenolics and anthocyanins, in the clarification of grape marc extract by microfiltration (MF) was studied. MF was operated by using three monotubular ceramic membranes with a pore size of 0.14, 0.2, and 0.8 µm, respectively, according to a batch concentration configuration in selected operating conditions (2.25 bar as operating pressure, 4.93 L/min as feed flow rate, and 25 °C as operating temperature). No significant differences in the permeate flux values were appreciated despite the difference in pore size. The mathematical analyses of the flux behavior revealed that intermediate pore blocking is the predominant mechanism for 0.14 and 0.2 µm membranes, whereas complete pore blocking prevails for the 0.8 µm membrane. Differences in the fouling mechanism were associated with differences in the total phenols rejection: the highest rejection was observed for the 0.8 µm membrane followed by 0.2 and 0.14 µm membranes. All selected membranes showed low rejection of sugars, with values lower than 10%, and no retention towards anthocyanins. All the clarified extracts showed a turbidity lower than 4.87 NTU. Based on the experimental results, the 0.14 µm membrane appeared as the best option for the clarification of grape marc extract.
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spelling pubmed-69184682019-12-24 Impact of Membrane Pore Size on the Clarification Performance of Grape Marc Extract by Microfiltration Mora, Francisca Pérez, Karla Quezada, Carolina Herrera, Carla Cassano, Alfredo Ruby-Figueroa, René Membranes (Basel) Article The influence of membrane pore size on the permeate flux, fouling mechanism, and rejection of soluble and suspended solids, as well as of phenolics and anthocyanins, in the clarification of grape marc extract by microfiltration (MF) was studied. MF was operated by using three monotubular ceramic membranes with a pore size of 0.14, 0.2, and 0.8 µm, respectively, according to a batch concentration configuration in selected operating conditions (2.25 bar as operating pressure, 4.93 L/min as feed flow rate, and 25 °C as operating temperature). No significant differences in the permeate flux values were appreciated despite the difference in pore size. The mathematical analyses of the flux behavior revealed that intermediate pore blocking is the predominant mechanism for 0.14 and 0.2 µm membranes, whereas complete pore blocking prevails for the 0.8 µm membrane. Differences in the fouling mechanism were associated with differences in the total phenols rejection: the highest rejection was observed for the 0.8 µm membrane followed by 0.2 and 0.14 µm membranes. All selected membranes showed low rejection of sugars, with values lower than 10%, and no retention towards anthocyanins. All the clarified extracts showed a turbidity lower than 4.87 NTU. Based on the experimental results, the 0.14 µm membrane appeared as the best option for the clarification of grape marc extract. MDPI 2019-11-06 /pmc/articles/PMC6918468/ /pubmed/31698840 http://dx.doi.org/10.3390/membranes9110146 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Mora, Francisca
Pérez, Karla
Quezada, Carolina
Herrera, Carla
Cassano, Alfredo
Ruby-Figueroa, René
Impact of Membrane Pore Size on the Clarification Performance of Grape Marc Extract by Microfiltration
title Impact of Membrane Pore Size on the Clarification Performance of Grape Marc Extract by Microfiltration
title_full Impact of Membrane Pore Size on the Clarification Performance of Grape Marc Extract by Microfiltration
title_fullStr Impact of Membrane Pore Size on the Clarification Performance of Grape Marc Extract by Microfiltration
title_full_unstemmed Impact of Membrane Pore Size on the Clarification Performance of Grape Marc Extract by Microfiltration
title_short Impact of Membrane Pore Size on the Clarification Performance of Grape Marc Extract by Microfiltration
title_sort impact of membrane pore size on the clarification performance of grape marc extract by microfiltration
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6918468/
https://www.ncbi.nlm.nih.gov/pubmed/31698840
http://dx.doi.org/10.3390/membranes9110146
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