Fungal pretreatment of unsterilized yard trimmings for enhanced methane production by solid-state anaerobic digestion

Abstract The effects of solid-state NaOH pretreatment on the efficiency of methane production from semi-dry anaerobic digestion of rose (Rosa rugosa) stalk were investigated at various NaOH loadings (0, 1, 2, and 4% (w/w)). Methane production, process stability and energy balance were analyzed. Results showed that solid-state NaOH pretreatment significantly improved biogas and methane yields of 30-day anaerobic digestion, with increases from 143.7 mL/g volatile solids (VS) added to 157.1 mL/g VS –192.1 mL/g VS added and from 81.8 mL/g VS added to 88.8 mL/g VS–117.7 mL/g VS added, respectively. Solid-state NaOH pretreatment resulted in anaerobic digestion with higher VS reduction and lower technical digestion time. The 4% NaOH-treated group had the highest methane yield of 117.7 mL/g VS added, which was 144% higher compared to the no NaOH-treated group, and the highest net energy recovery. Higher rate of lignocellulose breakage and higher process stability of anaerobic digestion facilitated methane production in the NaOH-pretreated groups.

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Solid-State Anaerobic Digestion for Methane Production from Corn Stalks with Stack-Pretreated

Materials Science Forum ◽

10.4028/www.scientific.net/msf.697-698.326 ◽

2011 ◽

Vol 697-698 ◽

pp. 326-330 ◽

Cited By ~ 1

Author(s):

S.X. Zhou ◽

Y.P. Dong ◽

Y.L. Zhang

Keyword(s):

Anaerobic Digestion ◽

Solid State ◽

Methane Production ◽

Biogas Production ◽

Cow Dung ◽

Cow Manure ◽

Pretreatment Method ◽

Biogas Yield ◽

Microbial Pretreatment ◽

Microbial Strains

Microbial pretreatment was applied to enhance biogas production from corn stover through solid-state anaerobic digestion, but the price of microbial strains is high. The objective of this study was to find the effects on biogas production by the naturally microbial pretreatment method. The highest cumulative biogas yield for 60-day solid-state anaerobic digestion was obtained in B group (the pretreated corn straws with cow dung), which was 19.6% higher than that of the untreated samples. The D group（the pretreated corn straws with the sludge）cumulative biogas yield for 60-day solid-state anaerobic digestion was obtained, which was 18.87% higher than that of the untreted samples. The biogas of D group increased to the range of 55%～60% methane content, while B group with the range of 75%～80%.The results indicated that the pretreated corn straws mixing cow manure can improve both the biogas production yield and the content of methane in CH4。

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Fungal Pretreatment of Albizia Chips for Enhanced Biogas Production by Solid-State Anaerobic Digestion

Energy & Fuels ◽

10.1021/ef501922t ◽

2014 ◽

Vol 29 (1) ◽

pp. 200-204 ◽

Cited By ~ 26

Author(s):

Xumeng Ge ◽

Tracie Matsumoto ◽

Lisa Keith ◽

Yebo Li

Keyword(s):

Anaerobic Digestion ◽

Solid State ◽

Biogas Production ◽

Fungal Pretreatment

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Study on Solid-State Anaerobic Co-Digestion with Distiller’s Grains and Food Waste for Methane Production

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.485.306 ◽

2012 ◽

Vol 485 ◽

pp. 306-309

Author(s):

Li Hong Wang ◽

Qun Hui Wang ◽

Wei Wei Cai

Keyword(s):

Anaerobic Digestion ◽

Solid State ◽

Synergistic Effect ◽

Food Waste ◽

Methane Production ◽

Waste Treatment ◽

Biogas Production ◽

Methane Yield ◽

Kitchen Waste ◽

Distiller's Grains

Solid-state anaerobic digestion (SSAD) of distiller’s grains (DG) and kitchen waste (KW) for biogas was investigated. Six DG to KW ratios of 10/1, 8/1, 6/1, 4/1, 1/0, and 0/1 was used. The results showed that in 48 digestion days the co-digestion with DG to KW ratio of 8:1 obtained the highest methane yield of 159.74mL/gTS, TS and VS reductions of 58.7% and 71.8%, hemicellulase, cellulose and lignin reductions of 46.7%, 45.4% and 4.0%. Compared to mono-digestions of DG or KW, co-digestion of DG and FW had a good synergistic effect. It indicated that SSAD of cellulosic-based waste and food waste could be one of the options for efficient biogas production and waste treatment

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Solid-state anaerobic digestion for methane production from organic waste

Renewable and Sustainable Energy Reviews ◽

10.1016/j.rser.2010.07.042 ◽

2011 ◽

Vol 15 (1) ◽

pp. 821-826 ◽

Cited By ~ 521

Author(s):

Yebo Li ◽

Stephen Y. Park ◽

Jiying Zhu

Keyword(s):

Anaerobic Digestion ◽

Solid State ◽

Methane Production ◽

Organic Waste

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Methane production from solid-state anaerobic digestion of lignocellulosic biomass

Biomass and Bioenergy ◽

10.1016/j.biombioe.2012.09.014 ◽

2012 ◽

Vol 46 ◽

pp. 125-132 ◽

Cited By ~ 140

Author(s):

Lo Niee Liew ◽

Jian Shi ◽

Yebo Li

Keyword(s):

Anaerobic Digestion ◽

Solid State ◽

Lignocellulosic Biomass ◽

Methane Production

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Influence of moisture content of solid-state NaOH pretreatment and codigestion on methane production in the semi-dry anaerobic digestion of rose stalk

BioResources ◽

10.15376/biores.14.2.4210-4223 ◽

2019 ◽

Vol 14 (2) ◽

pp. 4210-4223

Author(s):

Yongsheng Chen ◽

Zhijuan Ke ◽

Yue-gan Liang

Keyword(s):

Anaerobic Digestion ◽

Solid State ◽

Moisture Content ◽

Methane Production ◽

Biogas Production ◽

Pig Manure ◽

Naoh Pretreatment ◽

Production Kinetics ◽

Anaerobic Codigestion ◽

Dry Anaerobic Digestion

Large quantities of burned or abandoned rose stalks are leading to serious environmental pollution. In this study, the effect of the moisture content of a solid-state NaOH pretreatment on methane production was first determined by a biochemical methane potential test. Then, the effect of codigestion with pig manure on methane production was investigated under the optimal moisture via thermophilic semi-dry anaerobic digestion by leaching bed reactor. Biogas production kinetic was assessed by the first-order kinetic model and modified Gompertz model. An increase in methane yield and biogas production kinetics was shown in the solid-state NaOH pretreated biomass. There was no significant difference in methane production for the three moisture contents studied during pretreatment (54%, 70%, and 77%). The anaerobic codigestion of rose stalk and pig manure increased 41% to 52% for methane yields and improved biogas production kinetics compared with monodigestion of rose stalk. Anaerobic codigestion did not greatly change the process stability, except for NH4+-N. The optimal process for the anaerobic digestion of rose stalk was as follows. The rose stalk was initially pretreated via solid-state NaOH pretreatment with a moisture content of 70%. Then, the pretreated rose stalk was co-digested with pig manure at a total solids ratio of 1:1.

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