Rejection of micron-sized particles using beech wood xylem

Vitas, Selin; Beckmann, Paul; Skibinski, Bertram; Goldhahn, Christian; Muff, Livius F.; Cabane, Etienne

doi:10.1039/c8ew00774h

Cited by 10 publications

(12 citation statements)

References 55 publications

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“…Moreover, the high amount of vessels leads to an easy owthrough with low pressure drop, which is benecial for owthrough applications. 34,63 Over the course of the reaction, the solution penetrates the porous wood structure, in which Au 3+ -ions are then reduced to gold particles at the surface of wood cell walls. It was shown, that the cell wall component lignin can act as a reducing agent for noble metal ions.…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, the pore-size of the wood could decrease due to swelling of the wood structure during the process. 34 This would further increase diffusion limitations. However, such a behavior is very unlikely in the case of this measurements, as they were executed with samples that were already kept in a water-saturated state for more than 24 hours.…”

Section: Resultsmentioning

confidence: 99%

“…30 Wood and wood-based functional materials have therefore recently been used for various ow-through applications. They comprise membranes for water ltration, [31][32][33][34][35] oil/water-separation, [36][37][38] and membranes with tunable ux. 63 Moreover, owthrough catalysis has been performed with a wood-based material.…”

Section: Introductionmentioning

confidence: 99%

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Enzyme immobilization inside the porous wood structure: a natural scaffold for continuous-flow biocatalysis

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Enzyme immobilization inside the porous wood structure: a natural scaffold for continuous-flow biocatalysis

et al. 2020

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“…Its anisotropic micropores ensure directed transport of liquids with high throughput and low pressure drop. 6 In general, hardwoods, such as the beech wood used in this study, mainly contain two different kinds of micropores: fiber lumina and vessel lumina. Both are tubular channels in the growth direction of the tree and essentially the vessel lumina serve as transport pathways for water in the living plant.…”

Section: Introductionmentioning

confidence: 99%

“…16,23 It is in particular a problem if hardwoods are used that exhibit an extensive vessel network, which provides unhindered flow through the structure as the pore length exceeds the thickness of the membrane. 6 Concomitantly, there is little knowledge yet about influencing the flowthrough behavior of wood-based membranes and controlling the flux of wood-based membranes has never been investigated.…”

Section: Introductionmentioning

confidence: 99%

Wood–Gelatin Bio-Composite Membranes with Tunable Flux

Goldhahn

Schubert

Lüthi

et al. 2020

ACS Sustainable Chem. Eng.

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Wood is an attractive bio-resource for the production of functional materials, as it provides a complex hierarchical structure with unique properties. It is particularly promising for membrane applications due to its aligned micropores, which enable directed flow of liquids. However, wood-based functional membranes often rely on the combination of wood with non-ecofriendly compounds or production methods. Furthermore, the performance of such membranes is pre-determined by wood's intrinsic porosity, which cannot be regulated.

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Surface Functionalization of Spruce‐Derived Cellulose Scaffold for Glycoprotein Separation

Wang

Koskela

et al. 2021

Adv Materials Inter

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as enzymes and sensing molecules for diverse applications in biosensors, bioseparation, and biocatalysis. [1] Compared to solid support materials such as synthetic polymer resins, inorganic particles, and polymer/inorganic composites, cellulose nanomaterials or nanocelluloses offer unique properties including versatile surface chemistry, biocompatibility, biodegradability, optical and mechanical performance. Nanocellulose-based materials including nanopaper and aerogel from nanofibrillated cellulose, [2] membranes/felts from electrospun cellulose nanofibers, [3] and cellulose nanocrystals (CNCs) [4] have been previously functionalized for point-of-care diagnosis, antibacterial medical textiles and filters, labeling and bioimaging applications. In addition, regenerated nanocellulose hydrogel, [5] bleached kraft wood pulp fibers, [6] filter paper, [7] and regenerated amorphous cellulose [8] have also been utilized for immobilization of functional enzymes, or for purification of cellulose-binding moduletagged protein. Furthermore, in order to obtain designed flow channels and pore structures instead of randomly packed columns for separation applications, regenerated cellulose columns have been prepared by using 3D printing and functionalized with ion exchange ligands for chromatographic purification of viral particles. [9] To avoid energyand resource-intensive production methods for the bottom-up fabrication of cellulose structures with hierarchical order over different length scales using nanocellulose or regenerated cellulose, top-down structural engineering and novel chemical modification methods are more favorable in redesigning wood for different functional applications. [10] Benefitting from the high amount of large, open-ended vessels in hardwood species (>30% of wood), enzymes have been immobilized on poplar wood by nanoparticle-mediated adsorption and used as a flow-through heterogeneous biocatalyst. [11] Hardwoods have two primary types of cells with very different geometries and functions: open-ended water-conducting vessels with a diameter of 50-800 µm, and load-bearing fibers of 1-2 mm length and 15 µm width. [12] On the other hand, tracheids with a width of ≈30 µm and a length of 2-4 mm are the predominant wood cells in softwood species. [12a] Tracheids are close-ended and joined top-to-bottom via pits to allow the conduction of water upward. Compared to hardwoods, softwoods have a rather homogenous cellular structure with uniform-sized wood cells (Figure S1, Supporting Information). Such cellular Protein immobilization on a stationary phase, such as nanocelluloses, is widely used in biodiagnostic, biocatalytic, and bioseparation applications. With the top-down approach which utilizes the native hardwood honeycomb structure, mesoporous cellulose scaffolds can be fabricated without the need for energy-consuming production and bottom-up assembly of nanocelluloses. However, this approach is difficult for preparing softwood-based cellulose scaffolds due to the disintegration of wood cells after complete ...

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Rejection of micron-sized particles using beech wood xylem

Abstract: Investigating the removal efficiency of wood tissue in a dead-end filtration of micron-sized surrogates by determining the log removal values as well as the permeability of the material to water.

Cited by 10 publications

References 55 publications

Enzyme immobilization inside the porous wood structure: a natural scaffold for continuous-flow biocatalysis

Enzyme immobilization inside the porous wood structure: a natural scaffold for continuous-flow biocatalysis

Wood–Gelatin Bio-Composite Membranes with Tunable Flux

Surface Functionalization of Spruce‐Derived Cellulose Scaffold for Glycoprotein Separation

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