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Modification of biochar properties using CO2

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dc.contributor.author Kim, K
dc.contributor.author Oh, J
dc.contributor.author Vithanage, M
dc.contributor.author Park, Y.K
dc.date.accessioned 2020-08-27T07:02:13Z
dc.date.available 2020-08-27T07:02:13Z
dc.date.issued 2019
dc.identifier.citation Kim, K, et al.(2019)."Modification of biochar properties using CO2", Chemical Engineering Journal 372 (2019) 383–389 en_US
dc.identifier.uri http://dr.lib.sjp.ac.lk/handle/123456789/9067
dc.description.abstract Biochar is widely used for various environmental remediation strategies such as soil amendment because of its intrinsic carbon negativity and porosity. Biochar is a charcoal-like material produced via pyrolysis of biomass. To determine an effective method for modification of the porosity and morphology of biochar and establishment of a more sustainable pyrolysis platform for biomass valorization, this study used CO2 as a reactive gas medium in the biomass pyrolysis process. This study placed emphasis on elucidating the role of CO2 in the production of biochar from different types of biomass, such as cellulose, xylan, lignin, grass, and oak wood. The surface area and porosity of biochar were strongly related to the type of biomass. Under comparable pyrolysis conditions, the surface area of biochar decreased in the following order: cellulose > xylan > lignin∼oak wood > grass. The use of CO2 as the gas medium in biomass pyrolysis affected the surface area and porosity of biochar samples derived from biomass feedstock. For instance, the surface area and total pore volume of the oak-wood-derived biochar produced in the CO2 environment were twice those produced in the N2 environment. Given that the increases in the biochar surface area and porosity were attributed to the enhanced release of volatile organic compounds (VOCs) from biomass, CO2 may have enhanced VOC release (removal) during pyrolysis. Therefore, the use of CO2 in a pyrolysis platform is expected to be a strategic approach for biomass valorization. en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.subject Pyrolysis Biofuel Biomass valorization Biochar Engineered biochar en_US
dc.title Modification of biochar properties using CO2 en_US
dc.type Article en_US
dc.identifier.doi 10.1016/j.cej.2019.04.170 en_US


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