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Korea Advanced Farmers Association, Inc
- 농업기술회보
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- v.42 no.5 s.499
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- pp.44-45
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- 2005
일본,목질 바이오매스 에너지 이용/ EU,유전자변형작물(GMO)에 대한 종합보고서 발표/2005년 북한 농업전망과 남북 협력/농림부,농작물재해보험 손해 평가 요령 개정
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Park, Jang Han;Kim, Jun Seok
- Korean Chemical Engineering Research
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- v.54 no.1
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- pp.1-5
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- 2016
For obtain fermentable sugar, we conducted acid hydrolysis with lignocellulosic biomass without enzyme. The lignocellulosic biomass used pinus rigida and Palm residues (EFB; empty fruit bunches). In the acid hydrolysis, we consider the hydrolysis condition to reduce a denatured sugar. So this study was conducted 2-step acid hydrolysis. First-step hydrolysis used high concentration (72 wt%) sulfuric acid at $80^{\circ}C$. At the condition, we obtained 11.49 wt%, 32 wt% glucose conversion for pinus rigida and EFB. After the step, the liquor was dilute until 9~15 wt% acid concentration and conducted second hydrolysis at $50{\sim}120^{\circ}C$. In the second hydrolysis, we obtained maximum glucose conversion (pinus rigida 86.8 wt% (39 g/L) and EFB 95.3 wt% (32.4 g/L)) at 9 wt% acid concentration and $120^{\circ}C$ for 80 min. All samples through the process are analyzed on the basis of mass balance.
https://doi.org/10.9713/kcer.2016.54.1.1 인용 PDF KSCI

Kim, Hyungjin;Lee, Seung Bum
- Applied Chemistry for Engineering
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- v.26 no.4
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- pp.511-514
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- 2015
A pretreatment process of cellulose decomposition to a monosaccharide plays an important role in the cellulosic ethanol production using the lignocellulosic biomass. In this study, a cellulosic ethanol was produced by using acidic hydrolysis and enzymatic saccharification process from the lignocellulosic biomass such as rice straw, sawdust, copying paper and newspaper. Three different pretreatment processes were compared; the acidic hydrolysis ($100^{\circ}C$, 1 h) using 10~30 wt% of sulfuric acid, the enzymatic saccharification (30 min) using celluclast ($55^{\circ}C$, pH = 5.0), AMG ($60^{\circ}C$, pH = 4.5), and spirizyme ($60^{\circ}C$, pH = 4.2) and also the hybrid process (enzymatic saccharification after acidic hydrolysis). The yield of cellulosic ethanol conversion with those pretreatment processes were obtained as the following order : hybrid process > acidic hydrolysis > enzymatic saccharification. The optimum fermentation time was proven to be two days in this work. The yield of cellulosic ethanol conversion using celluclast after the acidic hydrolysis with 20 wt% sulfuric acid were obtained as the following order : sawdust > rice straw > copying paper > newspaper when conducting enzymatic saccharification.
https://doi.org/10.14478/ace.2015.1069 인용 PDF KSCI