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 Effects of organic acids on rice straw on supercritical hydrolysis

 超临界下有机酸对稻秆水解糖化的影响



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ChineseJournalofBioprocessEngineering
Vol.10No.2
Mar.2012
doi:10.3969/j.issn.1672-3678.2012.02.003
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:2011-08-04
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:1672-3678(2012)02-0011-04
Effectsoforganicacidsonricestrawonsupercriticalhydrolysis
LIXingwei,GONGGuifen,LIXiaodong
(ColegeofMaterialsScienceandEngineering,HarbinUniversityofScienceandTechnology,Harbin150040,China)
Abstract:Withtheorganicacids(formicacid,aceticacid,andpropionicacid)asthecatalyst,hydrolysis
saccharificationofricestrawinthebatchreactorwasinvestigatedundertheconditionofthesuperandsub
criticalwater.Thereactiontemperature,reactiontimeandsolidtoliquidratioforreductionsugaryield
werestudied.Resultsshowedthatorganicacidwashelpfultothehydrolysissaccharificationofstraw.Re
ducingsugaryieldcouldincreasewhenaddingorganicacid.Thistrendwasmostevidentwhenaddingfor
micacid.Withtheextensionofreactiontime,reducingsugaryieldcouldgradualydecreased.Intheap
propriaterange,reducingsugarproductionwasmuchhigherwiththeincreasingofthesolidliquidratio.
Thebestconditionsonstrawhydrolysissaccharificationinsupercriticalwaterfromtheexperimentwereas
folows:formicacidconcentration3%,solidtoliquidratio4∶60,temperature410℃,andthereaction
time5min.Undertheconditions,thereducingsugarproductionreachedthehighest,665g/L.
Keywords:supercritical;hydrolysis;organicacids;reducingsugar
  
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