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Abstract
Bacterial cellulose (BC) has shown potential as a separation material. Herein, the performance of BC in pressure-driven separation is investigated as a function of incubation conditions and post-culture treatment. The pure water flux of never-dried BC (NDBC), was found to be 9 to 16 times higher than that for dried BC (DBC), in a pressure range of 0.25 to 2.5 bar. The difference in pressure response of NDBC and DBC was observed both in cross-flow filtration and capillary flow porometry experiments. DBC and NDBC were permeable to polymers with a hydrodynamic radius of ∼60 nm while protein retention was possible by introducing anionic surface charges on BC. The results of this work are expected to expand the development of BC-based filtration membranes, for instance towards the processing of biological fluids.
Original language | English |
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Article number | 117073 |
Number of pages | 9 |
Journal | Carbohydrate Polymers |
Volume | 251 |
Early online date | 16 Sep 2020 |
DOIs | |
Publication status | Published - 1 Jan 2021 |
MoE publication type | A1 Journal article-refereed |
Keywords
- bacterial cellulose
- nanocellulose
- filter
- pure water flux
- separation
- compression
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BioELCell: Bioproducts Engineered from Lignocelluloses: from plants and upcycling to next generation materials
Rojas Gaona, O., Abidnejad, R., Ajdary, R., Bhattarai, M., Garcia Greca, L., Klockars, K., Dufau Mattos, B., Majoinen, J., Ressouche, E., Robertson, D., Reyes Torres, G., Johansson, L., Kämäräinen, T., Zhu, Y., Zhao, B. & Tardy, B.
30/07/2018 → 31/07/2023
Project: EU: ERC grants
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CERES: Competence Center for the materials Bioeconomy: A Flagship for our Sustainable Future
01/05/2018 → 31/12/2022
Project: Academy of Finland: Other research funding