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Preparation of Activated Carbon: Forest residues activated with Phosphoric Acid and ZincSulfate
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Chemical Technology. (Gasification)ORCID iD: 0000-0002-1664-0278
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Chemical Technology.
niversidad de Pinar del Río, Departamento de Quimica, Pinarde de Río, Cuba,.
2011 (English)In: VII EDICIÓN DE LA CONFERENCIA CIENTÍFICA INTERNACIONAL MEDIOAMBIENTE SIGLO XXI, MAS XXI 2011, 2011Conference paper, Published paper (Refereed)
Abstract [en]

This paper describes the preparation of activated carbon by chemical activation. The selected biomass used as precursor is sawdust from both Cuban and Swedish Pine tree. Phosphoric acid and Zinc Sulphate are the chemical reagents. The objective is to study the influence of acid concentration, impregnation ratio and activation temperature on adsorption performance of the obtained activated carbon.

The experiments with phosphoric acid activation show that treatment with 40% acid concentration at 400 °C produce an activated carbon with good properties for ammonia adsorption and good iodine number. If a 30% phosphoric acid is used for activation, an activation temperature of 500 °C is recommended. With an impregnation ratio of 1, good adsorption was obtained in the activated carbon produced from Swedish pine while using Cuban pine a higher adsorption was obtained with an impregnation ratio of 2.

The experiments with Zinc Sulphate activation show that activation conditions of 20% zinc sulphate concentration, 400 °C and impregnation ratio: 1 are enough to produce an activated carbon with good properties for ammonia adsorption. The adsorption of carbon tetrachloride was lower. Activated carbons produced with 10 % zinc sulphate concentration, 0.5 impregnation ratio and 400 °C activation temperature (the mildest studied conditions) show already good iodine number and BET surface area.    

Place, publisher, year, edition, pages
2011.
National Category
Other Chemical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-73355OAI: oai:DiVA.org:kth-73355DiVA: diva2:488818
Conference
VII EDICIÓN DE LA CONFERENCIA CIENTÍFICA INTERNACIONAL MEDIOAMBIENTE SIGLO XXI, MAS XXI 2011, Santa Clara, Cuba, Noviembre 2011
Note
QC 20120206Available from: 2012-02-06 Created: 2012-02-02 Last updated: 2012-02-06Bibliographically approved

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