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Publisher: Springer
Languages: English
Types: Article
Subjects:
The depletion of fossil fuel reserves has led to\ud increasing interest in liquid bio-fuel from renewable biomass. Biomass is a complex organic material consisting of\ud different degrees of cellulose, hemicellulose, lignin,\ud extractives and minerals. Some of the mineral elements\ud tend to retard conversions, yield and selectivity during\ud pyrolysis processing. This study is focused on the extraction of mineral retardants from Napier grass using deionized water, dilute sodium hydroxide and sulfuric acid and subsequent pyrolysis in a fixed bed reactor. The raw biomass was characterized before and after each pretreatment\ud following standard procedure. Pyrolysis study was conducted\ud in a fixed bed reactor at 600 o�C, 30 �C/min and 30 mL/min N2 flow. Pyrolysis oil (bio-oil) collected was analyzed using standard analytic techniques. The bio-oil yield and characteristics from each pretreated sample were compared with oil from the non-pretreated sample. Bio-oil\ud yield from the raw sample was 32.06 wt% compared to\ud 38.71, 33.28 and 29.27 wt% oil yield recorded from the\ud sample pretreated with sulfuric acid, deionized water and\ud sodium hydroxide respectively. GC–MS analysis of the oil\ud samples revealed that the oil from all the pretreated biomass had more value added chemicals and less ketones and\ud aldehydes. Pretreatment with neutral solvent generated\ud valuable leachate, showed significant impact on the ash\ud extraction, pyrolysis oil yield, and its composition and\ud therefore can be regarded as more appropriate for thermochemical conversion of Napier grass.
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