Optimizing the thermophilic hydrolysis of grass silage in a two-phase anaerobic digestion system

被引：32

作者：

Orozco, A. M. ^{[1
]}

Nizami, A. S. ^{[2
]}

Murphy, J. D. ^{[2
]}

Groom, E. ^{[1
]}

机构：

[1] Queens Univ Belfast, Sch Chem & Chem Engn, Questor Ctr, Belfast BT9 5AG, Antrim, North Ireland

[2] Natl Univ Ireland Univ Coll Cork, Dept Civil & Environm Engn, Bioenergy & Biofuels Res Grp, Environm Res Inst, Cork, Ireland

来源：

BIORESOURCE TECHNOLOGY | 2013年 / 143卷

关键词：

Grass silage; Anaerobic digestion; Biogas; Two-phase anaerobic digestion; Thermophilic hydrolysis; METHANE PRODUCTION; BIOGAS PRODUCTION; SUBSTRATE RATIO; MONO-DIGESTION; BED REACTORS; PH CONTROL; BATCH; ACIDIFICATION; PRETREATMENT; BIOMETHANE;

D O I：

10.1016/j.biortech.2013.05.118

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Thermophilic hydrolysis of grass silage (GS) at 55 degrees C with organic loading rates (OLRs) of 6.5, 5, 2.5 and 1.0 kg VS m(-3) days(-1) and hydraulic retention times (HRT) of 10, 6, 4 and 2 days were evaluated in 12 glass bioreactors side by side. The hydrolytic process was measured by variation in pH, volatile solids (VS), VS destruction, soluble chemical oxygen demand (sCOD), hydrolysis and acidification yields. Biological methane potential (BMP) assays were carried out to measure the upper limit for methane production of grass silage with different hydrolytic pretreatments at mesophilic temperature (37 degrees C). The optimum methane yield of 368 L-N CH4 kg(-1) VS was obtained at an OLR of 1 kg VS m(-3) days(-1) and a HRT of 4 days, showing an increase of 30% in the methane potential in comparison to non-hydrolysed GS. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：117 / 125

页数：9

共 31 条

[1] Batch and continuous biogas production from grass silage liquor [J].

Abu-Dahrieh, Jehad ;

Orozco, Angela ;

Groom, Elaine ;

Rooney, David .

BIORESOURCE TECHNOLOGY, 2011, 102 (23) :10922-10928

[2] Anaerobic acidification of sugar-beet processing wastes: Effect of operational parameters [J].

Alkaya, Emrah ;

Demirer, Goksel N. .

BIOMASS & BIOENERGY, 2011, 35 (01) :32-39

[3] Methane production through anaerobic digestion of various energy crops grown in sustainable crop rotations [J].

Amon, Thomas ;

Amon, Barbara ;

Kryvoruchko, Vitally ;

Machmueller, Andrea ;

Hopfner-Sixt, Katharina ;

Bodiroza, Vitomir ;

Hrbek, Regina ;

Friedel, Juergen ;

Poetsch, Erich ;

Wagentristl, Helmut ;

Schreiner, Matthias ;

Zollitsch, Werner .

BIORESOURCE TECHNOLOGY, 2007, 98 (17) :3204-3212

[4]

[Anonymous], 2006, STANDARD METHODS EXA, DOI DOI 10.5860/CHOICE.37-2792

[5]

[Anonymous], VDI RICHTL

[6]

Cropgen, 2006, D7 KIN DAT MOD BMP T

[7] The effect of pH control and 'hydraulic flush' on hydrolysis and Volatile Fatty Acids (VFA) production and profile in anaerobic leach bed reactors digesting a high solids content substrate [J].

Cysneiros, Denise ;

Banks, Charles J. ;

Heaven, Sonia ;

Karatzas, Kimon-Andreas G. .

BIORESOURCE TECHNOLOGY, 2012, 123 :263-271

[8] Evaluation of the hydrolytic-acidogenic step of a two-stage mesophilic anaerobic digestion process of sunflower oil cake [J].

De La Rubia, M. A. ;

Raposo, F. ;

Rincon, B. ;

Borja, R. .

BIORESOURCE TECHNOLOGY, 2009, 100 (18) :4133-4138

[9] Anaerobic acidogenesis of dairy wastewater: the effects of variations in hydraulic retention time with no pH control [J].

Demirel, B ;

Yenigun, O .

JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY, 2004, 79 (07) :755-760

[10] Application of simplified models for anaerobic biodegradability tests. Evaluation of pre-treatment processes [J].

Donoso-Bravo, A. ;

Perez-Elvira, S. I. ;

Fdz-Polanco, F. .

CHEMICAL ENGINEERING JOURNAL, 2010, 160 (02) :607-614

← 1 2 3 4 →