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Adsorption of Naphthalene on Activated Wood Charcoal Derived from Biomass Gasification
Author(s) -
Gradel Andy,
Wünning Joachim Alfred,
Plessing Tobias,
Jess Andreas
Publication year - 2021
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201900632
Subject(s) - adsorption , tar (computing) , naphthalene , pyrolysis , charcoal , biomass (ecology) , syngas , chemistry , pulp and paper industry , activated charcoal , producer gas , chemical engineering , waste management , organic chemistry , fuel gas , catalysis , oceanography , computer science , engineering , programming language , combustion , geology
During gasification and/or pyrolysis of wooden biomass, charcoal is formed as a solid intermediate or product. In CO 2 ‐ and H 2 O‐rich atmospheres at high temperatures, a high specific surface area of several 100 m 2 per gram of charcoal may be reached. Common biomass gasifiers aim at a charcoal conversion of 100 %. Up to now, the option of a subsequent usage of the charcoal for adsorption of tar compounds has rarely been considered but is an interesting option to produce a clean syngas in a downstream adsorption unit. Experimental studies show an adsorption capacity of up to 0.4 g of tar per gram of charcoal using naphthalene as a model substance for tar. Respective adsorption isotherms, breakthrough curves in a fixed‐bed adsorber, and a kinetic breakthrough model are presented.