Influence of particle size and chemical composition on the performance and kinetics of anaerobic digestion process of sunflower oil cake in batch mode

被引：61

作者：

De la Rubia, M. A. ^{[1
]}

Fernandez-Cegri, V. ^{[1
]}

Raposo, F. ^{[1
]}

Borja, R. ^{[1
]}

机构：

[1] CSIC, Inst Grasa, Seville 41012, Spain

来源：

BIOCHEMICAL ENGINEERING JOURNAL | 2011年 / 58-59卷

关键词：

Batch assay; Biochemical methane potential (BMP); Kinetics; Lignocellulose; Particle size; Sunflower oil cake (SuOC); SUBSTRATE RATIO; INOCULUM; GENERATION; NITROGEN; FIBER;

D O I：

10.1016/j.bej.2011.09.010

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Biochemical methane potential (BMP) assays of sunflower oil cake (SuOC) were carried out to research the effect of different particle sizes and their chemical composition on methane yields and kinetics. Particle size ranges of (1) 0.355-0.55 mm, (2) 0.710-1.0 mm and (3) 1.4-2.0 mm in diameter were evaluated. The highest methane yield 213 +/- 8 mL CH4 g(-1) VSadded was obtained for the largest particle size analyzed (3), against 186 +/- 6 mL CH4 g(-1) VSadded obtained for particles 1 and 2. This may be attributed to the different lignocellulose compositions of the various particle size ranges studied and to organic matter removals (47.2% for 3, against similar to 41.5% for 1 and 2). The evolution of propionic acid concentration was found to be fundamental for explaining the lowest rate of biogas production for the smallest (1) particle size studied, with a specific rate constant k of 0.45 +/- 0.02 d(-1), while values of 0.61 +/- 0.02 d(-1) and 0.50 +/- 0.01 d(-1) were obtained for particles 2 and 3, respectively. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：162 / 167

页数：6

共 30 条

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