Impact of incubation conditions and post-treatment on the properties of bacterial cellulose membranes for pressure-driven filtration

Janika Lehtonen, Xiao Chen, Marco Beaumont, Jukka Hassinen, Hannes Orelma, Ludovic F. Dumée (Corresponding Author), Blaise L. Tardy (Corresponding Author), Orlando J. Rojas (Corresponding Author)

Research output: Contribution to journalArticleScientificpeer-review

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 languageEnglish
Article number117073
JournalCarbohydrate Polymers
Volume251
Early online date16 Sep 2020
DOIs
Publication statusE-pub ahead of print - 16 Sep 2020
MoE publication typeA1 Journal article-refereed

Keywords

  • bacterial cellulose
  • compression
  • filter
  • nanocellulose
  • pure water flux
  • separation

Fingerprint Dive into the research topics of 'Impact of incubation conditions and post-treatment on the properties of bacterial cellulose membranes for pressure-driven filtration'. Together they form a unique fingerprint.

Cite this