Influence of Ceramic Membrane Surface Characteristics on the Flux Behavior of a Complex Fermentation Broth
The valorization of agro-industrial residues using yeasts as biocatalysts requires efficient methods for biomass separation. Filtration with ceramic membranes is suitable for this task, however, the challenge of flux decline and the unavoidable cleaning must be taken into account. We investigated th...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-05-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/11/6/402 |
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| author | Nicolas A. P. Maguire Mehrdad Ebrahimi Rong Fan Sabine Gießelmann Frank Ehlen Steffen Schütz Peter Czermak |
| author_facet | Nicolas A. P. Maguire Mehrdad Ebrahimi Rong Fan Sabine Gießelmann Frank Ehlen Steffen Schütz Peter Czermak |
| author_sort | Nicolas A. P. Maguire |
| collection | DOAJ |
| description | The valorization of agro-industrial residues using yeasts as biocatalysts requires efficient methods for biomass separation. Filtration with ceramic membranes is suitable for this task, however, the challenge of flux decline and the unavoidable cleaning must be taken into account. We investigated the filtration of fermentation broth and its components using tubular microfiltration and ultrafiltration membranes, and hollow-fiber ultrafiltration membranes, with cut-offs of 30 and 200 nm. The steady-state flux was limited by fouling under comparable wall shear stress conditions but increased when the wall shear stress was higher. Single-component filtration with two 30 nm tubular ultrafiltration membranes, whose average surface roughness ranged from 1.0 to 3.9 µm, showed that smoother surfaces experience less biomass fouling under more intense hydrodynamic conditions. Furthermore, we showed experimentally and by scanning electron microscopy in filtration with 30 nm tubular membranes that the thickness of the first separation layer is responsible for the degree of irreversible resistance caused by the deposition of organic material in the membrane pores. The thickness of this layer should therefore be minimized without compromising mechanical stability. |
| first_indexed | 2024-03-10T10:56:59Z |
| format | Article |
| id | doaj.art-d725c9b7799944068861634887e1c799 |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-10T10:56:59Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-d725c9b7799944068861634887e1c7992023-11-21T21:49:41ZengMDPI AGMembranes2077-03752021-05-0111640210.3390/membranes11060402Influence of Ceramic Membrane Surface Characteristics on the Flux Behavior of a Complex Fermentation BrothNicolas A. P. Maguire0Mehrdad Ebrahimi1Rong Fan2Sabine Gießelmann3Frank Ehlen4Steffen Schütz5Peter Czermak6Institute of Bioprocess Engineering and Pharmaceutical Technology, University of Applied Sciences Mittelhessen, 35390 Giessen, GermanyInstitute of Bioprocess Engineering and Pharmaceutical Technology, University of Applied Sciences Mittelhessen, 35390 Giessen, GermanyInstitute of Bioprocess Engineering and Pharmaceutical Technology, University of Applied Sciences Mittelhessen, 35390 Giessen, GermanyMANN+HUMMEL GmbH, 71636 Ludwigsburg, GermanyMANN+HUMMEL GmbH, 71636 Ludwigsburg, GermanyMANN+HUMMEL GmbH, 71636 Ludwigsburg, GermanyInstitute of Bioprocess Engineering and Pharmaceutical Technology, University of Applied Sciences Mittelhessen, 35390 Giessen, GermanyThe valorization of agro-industrial residues using yeasts as biocatalysts requires efficient methods for biomass separation. Filtration with ceramic membranes is suitable for this task, however, the challenge of flux decline and the unavoidable cleaning must be taken into account. We investigated the filtration of fermentation broth and its components using tubular microfiltration and ultrafiltration membranes, and hollow-fiber ultrafiltration membranes, with cut-offs of 30 and 200 nm. The steady-state flux was limited by fouling under comparable wall shear stress conditions but increased when the wall shear stress was higher. Single-component filtration with two 30 nm tubular ultrafiltration membranes, whose average surface roughness ranged from 1.0 to 3.9 µm, showed that smoother surfaces experience less biomass fouling under more intense hydrodynamic conditions. Furthermore, we showed experimentally and by scanning electron microscopy in filtration with 30 nm tubular membranes that the thickness of the first separation layer is responsible for the degree of irreversible resistance caused by the deposition of organic material in the membrane pores. The thickness of this layer should therefore be minimized without compromising mechanical stability.https://www.mdpi.com/2077-0375/11/6/402ceramic membranebiomass separationagro-industrial residue<i>Kluyveromyces lactis</i>surface roughnesscomposition separating layer |
| spellingShingle | Nicolas A. P. Maguire Mehrdad Ebrahimi Rong Fan Sabine Gießelmann Frank Ehlen Steffen Schütz Peter Czermak Influence of Ceramic Membrane Surface Characteristics on the Flux Behavior of a Complex Fermentation Broth Membranes ceramic membrane biomass separation agro-industrial residue <i>Kluyveromyces lactis</i> surface roughness composition separating layer |
| title | Influence of Ceramic Membrane Surface Characteristics on the Flux Behavior of a Complex Fermentation Broth |
| title_full | Influence of Ceramic Membrane Surface Characteristics on the Flux Behavior of a Complex Fermentation Broth |
| title_fullStr | Influence of Ceramic Membrane Surface Characteristics on the Flux Behavior of a Complex Fermentation Broth |
| title_full_unstemmed | Influence of Ceramic Membrane Surface Characteristics on the Flux Behavior of a Complex Fermentation Broth |
| title_short | Influence of Ceramic Membrane Surface Characteristics on the Flux Behavior of a Complex Fermentation Broth |
| title_sort | influence of ceramic membrane surface characteristics on the flux behavior of a complex fermentation broth |
| topic | ceramic membrane biomass separation agro-industrial residue <i>Kluyveromyces lactis</i> surface roughness composition separating layer |
| url | https://www.mdpi.com/2077-0375/11/6/402 |
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