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Effects of potassium salts loading on calcium oxide on the hydrogen production from pyrolysis-gasification of biomass
Huazhong University of Science and Technology, Wuhan, China.
Huazhong University of Science and Technology, Wuhan, China.
Huazhong University of Science and Technology, Wuhan, China.
Huazhong University of Science and Technology, Wuhan, China.
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2018 (English)In: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 249, p. 744-750Article in journal (Refereed) Published
Abstract [en]

The effects of potassium (K) salts loading on CaO on the H2 production from pyrolysis-gasification of wheat straw were investigated. The loading of 0.25 wt% KCl could significantly enhance the CO2 absorption capability of CaO. The CO2 concentration in the product gas decreased sharply from 20.83 to 11.70 vol%, and the H2 concentration increased from 48.2 to 55.5 vol%. While the loading of 0.25 wt% K2CO3/K2SO4 inhibited the enhancing effect of CaO. Further increasing the loading of KCl on CaO, the CO2 absorption of CaO declined, but the catalytic effect of KCl on the gasification process was promoted. The loading of 0.25 wt% KCl on CaO significantly improved the cyclic performance of CaO during the pyrolysis-gasification process. Higher H2 concentration and more CO2 absorbed by CaO were obtained with the loading of 0.25 wt% KCl even after 5 cycles compared with those of pure CaO in the first cycle. 

Place, publisher, year, edition, pages
2018. Vol. 249, p. 744-750
Keywords [en]
Biomass pyrolysis-gasification, Calcium oxide, CO2 absorption, Hydrogen production, Potassium salts
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:miun:diva-32283DOI: 10.1016/j.biortech.2017.10.083ISI: 000425764100098PubMedID: 29100189Scopus ID: 2-s2.0-85032472534OAI: oai:DiVA.org:miun-32283DiVA, id: diva2:1163193
Available from: 2017-12-06 Created: 2017-12-06 Last updated: 2018-03-19Bibliographically approved

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Zhang, Wennan

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