Effect of biological pretreatments in enhancing corn straw biogas production

Zhong, Weizhang; Zhang, Zhongzhi; Luo, Yijing; Sun, Shanshan; Qiao, Wei; Meng, Xianghai

doi:10.1016/j.biortech.2011.09.077

Cited by 250 publications

(106 citation statements)

References 30 publications

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“…The flattened beginning of the graph of the cumulative biogas yield indicated significant inhibition and delay of the hydrolysis process ( DIN 38414-8, 1985) and, consequently, the whole process of methane fermentation. Monlau et al (2012) and Zhong et al (2011) proved that this inhibition may have been caused by a high content of lignin. After reaching the maximum ie after days 8 and 12 of the process, the rate of biogas production began to decrease systematically and slowly faded to a stop.…”

Section: Resultsmentioning

confidence: 97%

Development of optimum substrate compositions in the methane fermentation process

Lalak¹,

Kasprzycka²,

Paprota³

et al. 2015

International Agrophysics

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The aim of the study was to assess the potential of organic wastes from the agriculture and food industry as co-substrate for biogas production, on the basis of physical and chemical parameters analysis and biogas yield in the process of methane fermentation. The experimental material consisted of carrot pomace, kale by-products and maize silage. Methane fermentation was conducted in bioreactors equipped with an automatic control and measurement system. The study indicated correct physicochemical properties in terms of high content of dry organic matter and also correct C/N ratio. That was reflected in high biogas yields which amounted to, respectively, 558 N dm3kg−1VS−1for carrot pomace and kale by-products, and 526 N dm3kg−1VS−1for maize silage. The study showed that the intensity of biogas production was varied and depended on the composition of fermented mixtures. Methane fermentation of organic waste mixtures significantly increased the amount of biogas efficiency compared to the fermentation of individual substrates. The successful run of the experiment indicates that a mixture composed of carrot pomace and kale by-products is a good substrate for the production of biogas.

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Section: Resultsmentioning

confidence: 97%

Development of optimum substrate compositions in the methane fermentation process

Lalak¹,

Kasprzycka²,

Paprota³

et al. 2015

International Agrophysics

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“…Biogas yield was monitored on a daily basis using the water displacement method, as described in the literature [47]. The composition of the biogas was analyzed using a portable gas analyzer GA-21 plus (Madur Electronics, Vienna, Austria), equipped with electrochemical sensors to measure the following gases: O 2 , CO 2 , CH 4 , H 2 , H 2 S.…”

Section: Methane and Hydrogen Potentialmentioning

confidence: 99%

Integrated Bioethanol Fermentation/Anaerobic Digestion for Valorization of Sugar Beet Pulp

et al. 2017

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Large amounts of waste biomass are generated in sugar factories from the processing of sugar beets. After diffusion with hot water to draw the sugar from the beet pieces, a wet material remains called pulp. In this study, waste sugar beet pulp biomass was enzymatically depolymerized, and the obtained hydrolyzates were subjected to fermentation processes. Bioethanol, biomethane, and biohydrogen were produced directly from the substrate or in combined mode. Stillage, a distillery by-product, was used as a feedstock for anaerobic digestion. During biosynthesis of ethanol, most of the carbohydrates released from the sugar beet pulp were utilized by a co-culture of Saccharomyces cerevisiae Ethanol Red, and Scheffersomyces stipitis LOCK0047 giving 12.6 g/L of ethanol. Stillage containing unfermented sugars (mainly arabinose, galactose and raffinose) was found to be a good substrate for methane production (444 dm 3 CH 4 /kg volatile solids (VS)). Better results were achieved with this medium than with enzymatic saccharified biomass. Thermal pre-treatment and adjusting the pH of the inoculum resulted in higher hydrogen production. The largest (p < 0.05) hydrogen yield (252 dm 3 H 2 /kg VS) was achieved with sugar beet stillage (SBS). In contrast, without pre-treatment the same medium yielded 35 dm 3 H 2 /kg VS. However, dark fermentation of biohydrogen was more efficient when sugar beet pulp hydrolyzate was used.

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“…Corn straw contains ca. 41.16% cellulose and 28.13% hemicelluloses (Zhong et al 2011), which were mainly decomposed. …”

Section: Sem Morphology Of Corn Straw and Hydrocharmentioning

confidence: 99%

Fuel Properties and Combustion Kinetics of Hydrochar Prepared by Hydrothermal Carbonization of Corn Straw

Xiao¹,

Fan²,

Shi³

et al. 2016

BioResources

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The potential of using hydrothermal carbonization (HTC) on corn straw (CS) was studied for the production of solid fuel. The effects of hydrothermal conditioning on the mass yield, energy yield, higher heating value (HHV), H/C and O/C atomic ratios, the morphology, and equilibrium moisture content (EMC) of hydrochars were examined by varying the reaction temperature (170 °C, 200 °C, 230 °C, and 260 °C) and the residence time (15 min and 30 min). The results demonstrated that the solid fuel properties of hydrochar produced at 230 °C for 30 min had an appropriate HHV of 20.51 MJ/kg, a mass yield of 64.80%, and an energy yield of 77.41%. The physical structure changed because of hydrothermal carbonization and the hydrophobicity of hydrochar increased in comparison to raw corn straw after hydrothermal carbonization. The combustion characteristics and kinetic parameters of raw corn straw and hydrochar were calculated based on the thermogravimetric curves according to Arrhenius equation. The activation energies of hydrochars were larger than that of raw corn straw. The comprehensive combustibility index (S) of raw corn straw was greater than that of hydrochar when the reaction temperature and residence time were 230 °C and 30 min, respectively.

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Effect of biological pretreatments in enhancing corn straw biogas production

Cited by 250 publications

References 30 publications

Development of optimum substrate compositions in the methane fermentation process

Development of optimum substrate compositions in the methane fermentation process

Integrated Bioethanol Fermentation/Anaerobic Digestion for Valorization of Sugar Beet Pulp

Fuel Properties and Combustion Kinetics of Hydrochar Prepared by Hydrothermal Carbonization of Corn Straw

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