Gasification efficiencies of cellulose,hemicellulose and lignin fractions of biomass in aqueous media by using Pt on activated carbon catalyst |
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| Affiliation: | 1. School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore;2. Residues and Resource Reclamation Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, CleanTechOne, Singapore 637141, Singapore;1. LNEG, Estrada do Paço do Lumiar, 22, 1649-038 Lisboa, Portugal;2. DONG Energy, Kraftværksvej 53, DK-7000 Frederica, Denmark;1. School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp & Paper Engineering, South China University of Technology, Guangzhou 510640, China;2. Wolfson Catalysis, Inorganic Chemistry Laboratory, University of Oxford, Oxford OX1 3QR, UK;3. Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;4. Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;1. Department of Chemical Engineering, Lund University, P. O. Box 124, Lund SE-221 00, Sweden;2. Biotechnology Institute, University of Caxias do Sul, Caxias do Sul 95070-560, Brazil |
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| Abstract: | The diversity in the chemical composition of lignocellulosic feedstocks can affect the conversion technologies employed for biofuel production. Aqueous-phase reforming (APR) activities of cellulose, hemicellulose and lignin components of lignocellulosic biomass materials were evaluated for production of hydrogen content gas mixture using platinum catalyst on activated carbon support. Wheat straw, an abundant by-product from wheat production and kenaf (Hibiscus cannabinus L.), an annual herbaceous plant growing very fast with low lodging susceptibility were used as lignocellulosics in the present study. The hydrolysates of cellulose fractions of biomass materials showed the best performance for gasification. The results indicated that hemicellulose isolated from kenaf was more sensitive to degradation and therefore, produced more gaseous products than that of wheat straw. The hemicellulose isolated from kenaf biomass left the lowest amount of ungasified solid residue in APR among other cellulose and hemicellulose materials studied. Lignin fractions of both biomass materials were not reactive in APR to produce hydrogen rich gas mixture.Gasification efficiencies of kenaf and wheat straw's hemicelluloses were also compared with xylans from beechwood and oat spelts which were commercially available as hemicellulosic fractions.Oat spelts xylan showed better reforming activity over the beechwood xylan. |
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