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The Use of NaOH Solutions for Fouling Control in a Membrane Bioreactor: A Feasibility Study

Nowadays, the microbial production of 1,3-propanediol (1,3-PD) is recognized as preferable to the chemical synthesis. However, finding a technological approach allowing the production of 1,3-PD in the membrane bioreactor (MBR) is a great challenge. In the present study, a ceramic ultrafiltration (UF...

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Autores principales: Tomczak, Wirginia, Grubecki, Ireneusz, Gryta, Marek
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8625605/
https://www.ncbi.nlm.nih.gov/pubmed/34832116
http://dx.doi.org/10.3390/membranes11110887
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author Tomczak, Wirginia
Grubecki, Ireneusz
Gryta, Marek
author_facet Tomczak, Wirginia
Grubecki, Ireneusz
Gryta, Marek
author_sort Tomczak, Wirginia
collection PubMed
description Nowadays, the microbial production of 1,3-propanediol (1,3-PD) is recognized as preferable to the chemical synthesis. However, finding a technological approach allowing the production of 1,3-PD in the membrane bioreactor (MBR) is a great challenge. In the present study, a ceramic ultrafiltration (UF) membrane (8 kDa) for treatment of 1,3-PD broths was used. It has been demonstrated that the membrane used provides the stable permeate flux that is necessary to ensure the stability of the fermentation process in MBR technology. It was noticed that the broth pH has a significant impact on both the final 1,3-PD concentration and permeate flux. Moreover, the feasibility of using NaOH for fouling control in the MBR was evaluated. It has been shown that 1% NaOH solution is effective in restoring the initial membrane performance. To the best of our knowledge, this study is the first to shed light onto the possibility of reducing the amount of the alkaline solutions generated during the MBR operation. Indeed, it has been found that 1% NaOH solution can be successfully used several times for both membrane cleaning and to stabilize the broth pH. Finally, based on the results obtained, the technological conceptions of the MBR technology were designed.
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spelling pubmed-86256052021-11-27 The Use of NaOH Solutions for Fouling Control in a Membrane Bioreactor: A Feasibility Study Tomczak, Wirginia Grubecki, Ireneusz Gryta, Marek Membranes (Basel) Article Nowadays, the microbial production of 1,3-propanediol (1,3-PD) is recognized as preferable to the chemical synthesis. However, finding a technological approach allowing the production of 1,3-PD in the membrane bioreactor (MBR) is a great challenge. In the present study, a ceramic ultrafiltration (UF) membrane (8 kDa) for treatment of 1,3-PD broths was used. It has been demonstrated that the membrane used provides the stable permeate flux that is necessary to ensure the stability of the fermentation process in MBR technology. It was noticed that the broth pH has a significant impact on both the final 1,3-PD concentration and permeate flux. Moreover, the feasibility of using NaOH for fouling control in the MBR was evaluated. It has been shown that 1% NaOH solution is effective in restoring the initial membrane performance. To the best of our knowledge, this study is the first to shed light onto the possibility of reducing the amount of the alkaline solutions generated during the MBR operation. Indeed, it has been found that 1% NaOH solution can be successfully used several times for both membrane cleaning and to stabilize the broth pH. Finally, based on the results obtained, the technological conceptions of the MBR technology were designed. MDPI 2021-11-18 /pmc/articles/PMC8625605/ /pubmed/34832116 http://dx.doi.org/10.3390/membranes11110887 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Tomczak, Wirginia
Grubecki, Ireneusz
Gryta, Marek
The Use of NaOH Solutions for Fouling Control in a Membrane Bioreactor: A Feasibility Study
title The Use of NaOH Solutions for Fouling Control in a Membrane Bioreactor: A Feasibility Study
title_full The Use of NaOH Solutions for Fouling Control in a Membrane Bioreactor: A Feasibility Study
title_fullStr The Use of NaOH Solutions for Fouling Control in a Membrane Bioreactor: A Feasibility Study
title_full_unstemmed The Use of NaOH Solutions for Fouling Control in a Membrane Bioreactor: A Feasibility Study
title_short The Use of NaOH Solutions for Fouling Control in a Membrane Bioreactor: A Feasibility Study
title_sort use of naoh solutions for fouling control in a membrane bioreactor: a feasibility study
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8625605/
https://www.ncbi.nlm.nih.gov/pubmed/34832116
http://dx.doi.org/10.3390/membranes11110887
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