title: Comparative study on two-step concentrated acid hydrolysis for the extraction of sugars from lignocellulosic biomass.
abstract: Among all the feasible thermochemical conversion processes, concentrated acid hydrolysis has been applied to break the crystalline structure of cellulose efficiently and scale up for mass production as lignocellulosic biomass fractionation process. Process conditions are optimized by investigating the effect of decrystallization sulfuric acid concentration (65-80 wt%), hydrolysis temperature (80°C and 100°C), hydrolysis reaction time (during two hours), and biomass species (oak wood, pine wood, and empty fruit bunch (EFB) of palm oil) toward sugar recovery. At the optimum process condition, 78-96% sugars out of theoretically extractable sugars have been fractionated by concentrated sulfuric acid hydrolysis of the three different biomass species with 87-90 g/L sugar concentration in the hydrolyzate and highest recalcitrance of pine (softwood) was determined by the correlation of crystallinity index and sugar yield considering reaction severity.
authors.affiliation: Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea; Department of Clean Energy and Chemical Engineering, Korea University of Science and Technology, Daejeon 305-350, Republic of Korea.
authors.forename: Yanuar Philip
authors.initials: YP
authors.lastname: Wijaya
authors.affiliation: Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea; Department of Clean Energy and Chemical Engineering, Korea University of Science and Technology, Daejeon 305-350, Republic of Korea.
authors.forename: Robertus Dhimas Dhewangga
authors.initials: RD
authors.lastname: Putra
authors.affiliation: Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea; Department of Clean Energy and Chemical Engineering, Korea University of Science and Technology, Daejeon 305-350, Republic of Korea.
authors.forename: Vania Tanda
authors.initials: VT
authors.lastname: Widyaya
authors.affiliation: Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea; Department of Clean Energy and Chemical Engineering, Korea University of Science and Technology, Daejeon 305-350, Republic of Korea.
authors.forename: Jeong-Myeong
authors.initials: JM
authors.lastname: Ha
authors.affiliation: Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea; Department of Clean Energy and Chemical Engineering, Korea University of Science and Technology, Daejeon 305-350, Republic of Korea.
authors.forename: Dong Jin
authors.initials: DJ
authors.lastname: Suh
authors.affiliation: Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea; Department of Clean Energy and Chemical Engineering, Korea University of Science and Technology, Daejeon 305-350, Republic of Korea. Electronic address: mizzou333@kist.re.kr.
authors.forename: Chang Soo
authors.initials: CS
authors.lastname: Kim
mesh_terms: D018533:Biomass; D001709:Biotechnology / Q000379:methods*; D002241:Carbohydrates / Q000302:isolation & purification*; D002482:Cellulose / Q000737:chemistry; D003460:Crystallization; D005638:Fruit / Q000737:chemistry; D005947:Glucose / Q000032:analysis; D006868:Hydrolysis / Q000187:drug effects; D008031:Lignin / Q000737:chemistry*; D000073878:Palm Oil; D028223:Pinus / Q000737:chemistry; D010938:Plant Oils / Q000737:chemistry; D029963:Quercus / Q000737:chemistry; D013464:Sulfuric Acids / Q000494:pharmacology*; D013696:Temperature; D013997:Time Factors; D014934:Wood; D014994:Xylose / Q000032:analysis
chemical_list: D002241:Carbohydrates; D010938:Plant Oils; D013464:Sulfuric Acids; C036909:lignocellulose; D000073878:Palm Oil; D002482:Cellulose; D008031:Lignin; D014994:Xylose; D005947:Glucose; C033158:sulfuric acid
keywords: Concentrated acid hydrolysis; Crystallinity; EFB; Oak wood; Pine wood