Production of crude bio-oil via direct liquefaction of spent K-Cups

被引：23

作者：

Yang, Linxi ^{[1
]}

Mahmood, Nubla ^{[2
]}

Corscadden, Kenneth ^{[1
]}

Xu, Chunbao ^{[2
]}

He, Quan ^{[1
]}

机构：

[1] Dalhousie Univ, Fac Agr, Dept Engn, Truro, NS B2N 5E3, Canada

[2] Western Univ, Fac Engn, ICFAR, London, ON N6A 5B9, Canada

来源：

BIOMASS & BIOENERGY | 2016年 / 95卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Spent K-Cup; Liquefaction; Water-ethanol mixture; Bio-oil; Response surface methodology (RSM); HOT-COMPRESSED WATER; HYDROTHERMAL LIQUEFACTION; THERMOCHEMICAL LIQUEFACTION; LIGNOCELLULOSIC BIOMASS; COAL-LIQUEFACTION; ETHANOL-WATER; SEWAGE-SLUDGE; RICE HUSK; SOLVENTS; MICROALGAE;

D O I：

10.1016/j.biombioe.2016.07.006

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Spent K-Cups were liquefied into crude bio-oil in a water-ethanol co-solvent mixture and reaction conditions were optimized using response surface methodology (RSM) with a central composite design (CCD). The effects of three independent variables on the yield of crude bio-oil were examined, including the reaction temperature (varied from 255 degrees C to 350 degrees C), reaction time (varied from 0 min to 25 min) and solvent/feedstock mass ratio (varied from 2:1 to 12:1). The optimum reaction conditions identified were 276 degrees C, 3 min, and solvent/feedstock mass ratio of 11:1, giving a mass fraction yield of crude bio-oil of 60.0%. The overall carbon recovery at the optimum conditions was 93% in mass fraction. The effects of catalyst addition (NaOH and H2SO4) on the yield of crude bio-oil were also investigated under the optimized reaction conditions. The results revealed that the presence of NaOH promoted the decomposition of feedstock and significantly enhanced the bio-oil production and liquefaction efficiency, whereas the addition of H2SO4 resulted in a negative impact on the liquefaction process, decreasing the yield of crude bio-oil. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：354 / 363

页数：10

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