Biorefinery of Lignocellulosic Biomass from an Elm Clone: Production of Fermentable Sugars and Lignin-Derived Biochar for Energy and Environmental Applications

被引:27
|
作者
Martin-Sampedro, Raquel [1 ]
Eugenio, Maria E. [1 ]
Fillat, Ursula [1 ]
Antonio Martin, Juan [2 ]
Aranda, Pilar [3 ]
Ruiz-Hitzky, Eduardo [3 ]
Ibarra, David [1 ]
Wicklein, Bernd [3 ]
机构
[1] INIA CIFOR, Ctra La Coruna,Km 7-5, Madrid 28040, Spain
[2] Univ Politecn Madrid, Sch Forest Engineers, E-28040 Madrid, Spain
[3] CSIC, ICMM, Sor Juana Ines Cruz 3, Madrid 28049, Spain
关键词
Energy; Elm clone biomass; Environment; Fermentable sugars; Lignin-derived biochar; HIERARCHICAL POROUS CARBON; ACTIVATED CARBON; ETHANOL-PRODUCTION; ORGANOSOLV FRACTIONATION; BIOETHANOL PRODUCTION; ENZYMATIC-HYDROLYSIS; PRETREATMENT; ADSORPTION; CELLULOSE; SURFACE;
D O I
10.1002/ente.201800685
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Valorization of lignocellulosic feedstock from a Dutch elm disease tolerant Ulmus minor clone was studied as a new biomass resource. Herein, fermentable sugars and activated carbons from the side-stream lignins were produced. For the sugar extraction organosolv and acid hydrolysis pretreatments prior to enzymatic hydrolysis were compared for the first time for this clone prior to enzymatic hydrolysis; organosolv was more efficient for delignification (49 %), while acid hydrolysis was more efficient at eliminating hemicelluloses (95 %). A high final glucose concentration of 22-23.5 g L-1 was obtained after enzymatic hydrolysis suggesting that this clone can be considered a potential source for glucose-based biofuel production. The side-stream lignins were converted to microporous biochars of high surface area (1220 m(2) g(-1)) and micropore volume (0.42 cm(3) g(-1)). These biochars exhibited excellent properties as electrodes in supercapacitors with a specific capacitance of 118 F g(-1) and a high energy density of 14 Wh kg(-1) at 7000 W kg(-1), while they were also efficient adsorbents in water remediation of model contaminants.
引用
收藏
页码:277 / 287
页数:11
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