title: Comparison of pyrolytic products produced from inorganic-rich and demineralized rice straw (Oryza sativa L.) by fluidized bed pyrolyzer for future biorefinery approach.
abstract: The objectives of this study were to investigate the effects of inorganic constituents on the fast pyrolysis of the biomass and to determine the yields as well as physicochemical properties of pyrolytic products. The pyrolytic products were obtained from raw and demineralized rice straw using a fluidized bed type pyrolyzer at different temperatures. As pyrolysis temperature increased, total biooil yield gradually decreased from 46.6 to 29.6 wt.% for the raw-straw, and from 55.4 to 35.3 wt.% for the demineralized rice straw. For demineralized rice straw, higher pyrolysis temperatures promoted gasification reactions but reduced char formations. However, char yield for the raw-straw was relatively unaffected by temperature due to an increase in carbonization reactions that were catalyzed by some inorganics. Certain inorganic constituents in the biomass were distinctively distributed in the biooil, and ICP-ES and GC/MS analysis indicated that some inorganics may be chemically bound to cell wall components.
authors.affiliation: Department of Forest Sciences and Research Institute for Agriculture and Life Science, Seoul National University, Gwanak-ro, Gwanak-gu, Seoul 151-921, Republic of Korea.
authors.forename: In-Yong
authors.initials: IY
authors.lastname: Eom
authors.forename: Jae-Young
authors.initials: JY
authors.lastname: Kim
authors.forename: Soo-Min
authors.initials: SM
authors.lastname: Lee
authors.forename: Tae-Su
authors.initials: TS
authors.lastname: Cho
authors.forename: Hwanmyeong
authors.initials: H
authors.lastname: Yeo
authors.forename: Joon-Weon
authors.initials: JW
authors.lastname: Choi
mesh_terms: D002606:Charcoal / Q000737:chemistry*; D017745:Incineration / Q000379:methods*; D007287:Inorganic Chemicals / Q000737:chemistry*; D008903:Minerals / Q000302:isolation & purification*; D012275:Oryza / Q000737:chemistry*; D035261:Plant Components, Aerial / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry*; D012212:Rheology / Q000295:instrumentation; D013696:Temperature
chemical_list: D007287:Inorganic Chemicals; D008903:Minerals; D010936:Plant Extracts; D002606:Charcoal