Solid-state anaerobic co-digestion of spent mushroom substrate with yard trimmings and wheat straw for biogas production.

Spent mushroom substrate (SMS) is a biomass waste generated from mushroom production. About 5 kg of SMS is generated for every kg of mushroom produced. In this study, solid state anaerobic digestion (SS-AD) of SMS, wheat straw, yard trimmings, and their mixtures was investigated at different feedstock to effluent ratios. SMS was found to be highly degradable, which resulted in inhibition of SS-AD due to volatile fatty acid (VFA) accumulation and a decrease in pH. This issue was addressed by co-digestion of SMS with either yard trimmings or wheat straw. SS-AD of SMS/yard trimmings achieved a cumulative methane yield of 194 L/kg VS, which was 16 and 2 times higher than that from SMS and yard trimmings, respectively. SS-AD of SMS/wheat straw obtained a cumulative methane yield of 269 L/kg VS, which was 23 times as high as that from SMS and comparable to that from wheat straw.

[1]  R. Mowery,et al.  Compositional analysis of water-soluble materials in corn stover. , 2007, Journal of agricultural and food chemistry.

[2]  B C Williams,et al.  An initial assessment of spent mushroom compost as a potential energy feedstock. , 2001, Bioresource technology.

[3]  J Mata-Alvarez,et al.  Anaerobic co-digestion of pig manure and crude glycerol at mesophilic conditions: biogas and digestate. , 2012, Bioresource technology.

[4]  Yebo Li,et al.  Solid-state anaerobic digestion for methane production from organic waste , 2011 .

[5]  Yebo Li,et al.  Solid state anaerobic co-digestion of yard waste and food waste for biogas production. , 2013, Bioresource technology.

[6]  A. E. Greenberg,et al.  Standard methods for the examination of water and wastewater : supplement to the sixteenth edition , 1988 .

[7]  Yi Zheng,et al.  Fungal pretreatment of yard trimmings for enhancement of methane yield from solid-state anaerobic digestion. , 2014, Bioresource technology.

[8]  R. Guo,et al.  Modeling of the methane production and pH value during the anaerobic co-digestion of dairy manure and spent mushroom substrate , 2014 .

[9]  Yebo Li,et al.  Fungal pretreatment of unsterilized yard trimmings for enhanced methane production by solid-state anaerobic digestion. , 2014, Bioresource technology.

[10]  Amie D. Sluiter,et al.  Determination of Structural Carbohydrates and Lignin in Biomass , 2004 .

[11]  Jian Shi,et al.  Enhancing the solid-state anaerobic digestion of fallen leaves through simultaneous alkaline treatment. , 2011, Bioresource technology.

[12]  M. Taherzadeh,et al.  Anaerobic co-digestion of solid slaughterhouse wastes with agro-residues : Synergistic and antagonistic interactions determined in batch digestion assays , 2014 .

[13]  Jian Shi,et al.  Solid-state anaerobic digestion of spent wheat straw from horse stall. , 2011, Bioresource technology.

[14]  Finola E. Cliffe,et al.  Enzymatic Saccharification of Lignocellulosic Biomass , 2013 .

[15]  Jane M. F. Johnson,et al.  Estimating Source Carbon from Crop Residues, Roots and Rhizodeposits Using the National Grain-Yield Database , 2006 .

[16]  Floyd L. Schanbacher,et al.  Production of Methane Biogas as Fuel Through Anaerobic Digestion , 2010 .

[17]  I. Üzün,et al.  Use of spent mushroom compost in sustainable fruit production , 2004 .

[18]  P. Vasudevan,et al.  Biomethane production from fermented substrates , 1989 .

[19]  Yebo Li,et al.  Solid-state co-digestion of expired dog food and corn stover for methane production. , 2012, Bioresource technology.

[20]  K. S. Creamer,et al.  Inhibition of anaerobic digestion process: a review. , 2008, Bioresource technology.

[21]  R Girault,et al.  Anaerobic co-digestion of waste activated sludge and greasy sludge from flotation process: batch versus CSTR experiments to investigate optimal design. , 2012, Bioresource technology.

[22]  A. Ragauskas,et al.  Recent advances in understanding the role of cellulose accessibility in enzymatic hydrolysis of lignocellulosic substrates. , 2014, Current opinion in biotechnology.

[23]  P. Vasudevan,et al.  Utilization of spent agro-residues from mushroom cultivation for biogas production , 1990, Applied Microbiology and Biotechnology.