Abstract
The subcritical and supercritical water gasification of residue of some agricultural biomass samples (cotton and tobacco stalks) was investigated in a batch reactor at temperature range of 300–600°C and experiments were performed by addition of 10wt.% of different natural mineral catalysts (Trona, Dolomite and Borax). The yield and composition of gaseous, aqueous products and residue were identified by different analytical techniques. Gaseous products consisted mainly of permanent gases such as hydrogen, carbon dioxide, methane, carbon monoxide and C2–C4 compounds. Aqueous products consisted mainly of carboxylic acids (hydroxyacetic acid, formic acid and acetic acid), furfurals, phenols (phenol and cresols), aldehydes (formaldehyde and acetaldehyde). The effectiveness of three different natural mineral catalysts in SCWG can be classified as being Trona [Na3(CO3)(HCO3)·2H2O]>Borax [Na2B4O7·10H2O]>Dolomite [CaMg(CO3)2]. The results showed that the addition of Trona as catalysts at reaction temperature of 600°C, hydrogen yields of tobacco and cotton stalks were increased by 42.9% and 39.9%, respectively.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
