Alkali catalyzed liquefaction of corncob in supercritical ethanol-water

被引：33

作者：

Khampuang, Kobchok ^{[1
]}

Boreriboon, Nuttakorn ^{[1
]}

Prasassarakich, Pattarapan ^{[1
]}

机构：

[1] Chulalongkorn Univ, Fac Sci, Dept Chem Technol, Bangkok 10330, Thailand

来源：

BIOMASS & BIOENERGY | 2015年 / 83卷

关键词：

Alkali; Corncob; Impregnation; Liquefaction; Ethanol-water; FLUID EXTRACTION; BIO-OIL; LIQUID PRODUCTS; FAST PYROLYSIS; TEMPERATURE; CONVERSION; SHELL; YIELD;

D O I：

10.1016/j.biombioe.2015.10.022

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Corncob liquefaction in supercritical ethanol-water was performed with and without the addition of an alkali catalyst by direct addition or biomass impregnation in a 250-cm(3) batch reactor. The effects of temperature, solvent and alkali addition on the biomass conversion level and oil yield were investigated to find the optimum condition. For non-catalytic liquefaction using a 1:1 (v/v) ethanol: water ratio, a maximum oil yield and conversion level of 49.0% and 93.4%, respectively, were obtained at 340 degrees C. For alkali catalytic liquefaction, the oil yield with KOH addition (57.5%) was higher than that from KOH-impregnated corncob liquefaction (43.3%). The oil from liquefaction with KOH addition had higher heating value (26.7-35.3 MJ kg(-1)) than the corncob (19.1 MJ kg(-1)). The dominant components of the obtained oil were found by GC/MS analysis to be aldehyde, ester, phenol derivatives and aromatic compounds. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：460 / 466

页数：7

共 31 条

[1]

[Anonymous], 2013, ASTM D3172

[2]

ASTM, 2015, D201500 ASTM

[3] Supercritical fluid extraction of reed canary grass (Phalaris arundinacea) [J].

Aysu, Tevfik .

BIOMASS & BIOENERGY, 2012, 41 :139-144

[4] Conversion of cotton cocoon shell to liquid products by supercritical fluid extraction and low pressure pyrolysis in the presence of alkalis [J].

Çaglar, A ;

Demirbas, A .

ENERGY CONVERSION AND MANAGEMENT, 2001, 42 (09) :1095-1104

[5] Highly Efficient Liquefaction of Woody Biomass in Hot-Compressed Alcohol-Water Co-solvents [J].

Cheng, Shuna ;

D'cruz, Ian ;

Wang, Mingcun ;

Leitch, Mathew ;

Xu, Chunbao .

ENERGY & FUELS, 2010, 24 (09) :4659-4667

[6] Bio-Oil from Hydro-Liquefaction of Bagasse in Supercritical Ethanol [J].

Chumpoo, Jade ;

Prasassarakich, Pattarapan .

ENERGY & FUELS, 2010, 24 (03) :2071-2077

[7] Bio-oil production from pyrolysis of corncob (Zea mays L.) [J].

Demiral, Ilknur ;

Eryazici, Alper ;

Sensoz, Sevgi .

BIOMASS & BIOENERGY, 2012, 36 :43-49

[8] Effects of temperature and particle size on bio-char yield from pyrolysis of agricultural residues [J].

Demirbas, A .

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS, 2004, 72 (02) :243-248

[9] Mechanisms of liquefaction and pyrolysis reactions of biomass [J].

Demirbas, A .

ENERGY CONVERSION AND MANAGEMENT, 2000, 41 (06) :633-646

[10] Influences of the Chemical State of Alkaline Compounds and the Nature of Alkali Metal on Wood Pyrolysis [J].

Di Blasi, Colomba ;

Galgano, Antonio ;

Branca, Carmen .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2009, 48 (07) :3359-3369

← 1 2 3 4 →