Abstract:
:The overall valorization of rice husk char obtained by flash pyrolysis in a conical spouted bed reactor (CSBR) has been studied in a two-step process. Thus, silica has been recovered in a first step and the remaining carbon material has been subjected to steam activation. The char samples used in this study have been obtained by continuous flash pyrolysis in a conical spouted bed reactor at 500°C. Extraction with Na2CO3 allows recovering 88% of the silica contained in the rice husk char. Activation of the silica-free rice husk char has been carried out in a fixed bed reactor at 800°C using steam as activating agent. The porous structure of the activated carbons produced includes a combination of micropores and mesopores, with a BET surface area of up to 1365m(2)g(-1) at the end of 15min.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Alvarez J,Lopez G,Amutio M,Bilbao J,Olazar Mdoi
10.1016/j.biortech.2014.07.073subject
Has Abstractpub_date
2014-10-01 00:00:00pages
132-137eissn
0960-8524issn
1873-2976pii
S0960-8524(14)01062-1journal_volume
170pub_type
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