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Flammability and mechanical properties of biochars made in different pyrolysis reactors
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Byggkonstruktion och brand.ORCID-id: 0000-0002-5474-1512
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
Research and Post Graduate Department of Chemistry, St. Berchmans College, Changanacherry, Kerala, India.
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
Vise andre og tillknytning
2021 (engelsk)Inngår i: Biomass and Bioenergy, ISSN 0961-9534, E-ISSN 1873-2909, Vol. 152, artikkel-id 106197Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The effect of pyrolysis reactors on the properties of biochars (with a focus on flammability and mechanical characteristics) were investigated by keeping factors such as feedstock, carbonisation temperature, heating rate and residence time constant. The reactors employed were hydrothermal, fixed-bed batch vertical and fixed-bed batch horizontal-tube reactors. The vertical and tube reactors, at the same temperature, produced biochars having comparable elemental carbon content, surface functionalities, thermal degradation pattern and peak heat release rates. The hydrothermal reactor, although, a low-temperature process, produced biochar with high fire resistance because the formed tarry volatiles sealed water inside the pores, which hindered combustion. However, the biochar from hydrothermal reactor had the lowest nanoindentation properties whereas the tube reactor-produced biochar at 300 °C had the highest nanoindentation-hardness (290 Megapascal) and modulus (ca. 4 Gigapascal) amongst the other tested samples. Based on the inherent flammability and mechanical properties of biochars, polymeric composites’ properties can be predicted that can include them as constituents.

sted, utgiver, år, opplag, sider
Elsevier, 2021. Vol. 152, artikkel-id 106197
Emneord [en]
Biochar, Carbonisation, Flammability, Nanoindentation, Composites
HSV kategori
Forskningsprogram
Byggkonstruktion; Energiteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-86491DOI: 10.1016/j.biombioe.2021.106197ISI: 000686120900003Scopus ID: 2-s2.0-85111300252OAI: oai:DiVA.org:ltu-86491DiVA, id: diva2:1582202
Forskningsfinansiär
Bio4Energy
Merknad

Validerad;2021;Nivå 2;2021-07-29 (beamah)

Tilgjengelig fra: 2021-07-29 Laget: 2021-07-29 Sist oppdatert: 2022-10-27bibliografisk kontrollert

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Das, OisikUmeki, KentaroPhounglamcheik, AekjuthonSas, GabrielFörsth, Michael

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