Title
Design of experiments as a tool to guide the preparation of tailor-made activated carbons
Author
Jana B. Schaubeder
Institute of Bioproducts and Paper Technology (BPTI), Graz University of Technology
Author
Chamseddine Guizani
Department of Bioproducts and Biosystems, Aalto University
Author
Julian Selinger
Institute of Bioproducts and Paper Technology (BPTI), Graz University of Technology
... show all
Abstract
Activated carbon produced from biomass exhibits a high specific surface area due to the natural hierarchical porous structure of the precursor material. To reduce production costs of activated carbon, bio-waste materials receive more and more attention, which has led to a steep increase in the number of publications over the past decade. However, the characteristics of activated carbon are highly dependent on the properties of the precursor material used, making it difficult to draw assumptions about activation conditions for new precursor materials based on published work. Here, we introduce a Design of Experiment methodology with a Central Composite Design to better predict the properties of activated carbons from biomass. As a model precursor, we employ well-defined regenerated cellulose-based fibers which contain 25 wt.% chitosan as intrinsic dehydration catalyst and nitrogen donor. The use of the DoE methodology opens up the possibility to better identify the crucial dependencies between activation temperature and impregnation ratio on the yield, surface morphology, porosity and chemical composition of the activated carbon, independent of the used biomass. The use of DoE yields contour plots, which allows for more facile analysis on correlations between activation conditions and activated carbon properties, thus enabling its tailor-made manufacturing.
Keywords
Chemical engineeringEnergy science and technologyEngineering
Object type
Language
English [eng]
Persistent identifier
https://phaidra.univie.ac.at/o:2063480
Appeared in
Title
Scientific Reports
Volume
13
ISSN
2045-2322
Issued
2023
Publisher
Springer Science and Business Media LLC
Date issued
2023
Access rights
Rights statement
© The Author(s) 2023
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