Co-digestion of cattle manure and grass harvested with different technologies. Effect on methane yield, digestate composition and energy balance

Moset, V.; Fontaine, Doline; Møller, Henrik Bjarne

doi:10.1016/j.energy.2017.08.068

Cited by 28 publications

(15 citation statements)

References 28 publications

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“…Total N in CM was in the same range as reported in previous studies (Sørensen and Eriksen 2009;Webb et al 2013;Moset et al 2017). Total N was fully recovered in the digestates, which was also found in other studies (Möller and Müller 2012;Wahid et al 2018).…”

Section: N and S Transformations During Adsupporting

confidence: 88%

Nitrogen and Sulfur Availability in Digestates from Anaerobic Co-digestion of Cover Crops, Straw and Cattle Manure

Fontaine

Feng

Labouriau

et al. 2019

J Soil Sci Plant Nutr

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Anaerobic digestion (AD) has the potential to enhance the availability of nitrogen (N) from green manures; however, part of the sulfur (S) is lost with the biogas. In this study, the N and S availabilities from untreated and digested cover crop (CC) and straw mixtures were measured after application to soil in the laboratory. In addition, a microplot experiment was carried out to assess the N availability in a spring barley crop. A CC consisting of red clover (Trifolium pratense L.) and chicory (Cichorium intybus L.) was harvested and ensiled with barley straw (Hordeum vulgare L.) at different ratios (1:0, 10:1 and 3:1). The silages were either digested alone or co-digested with cattle manure (CM) in continuously fed anaerobic reactors. Six months after soil application, the net inorganic N release was − 7%, 15% and 25% of total N for untreated CC:straw ratios of 3:1, 10:1 and 1:0, respectively. AD significantly increased the net inorganic N release of these plant materials to 5%, 26% and 38% (mono-digestion) and 40%, 41% and 43% (co-digestion with CM). Results from the laboratory experiment corroborated the field experiment in which AD significantly increased the nitrogen fertiliser replacement value (NFRV) of the CC:straw from 19 to 41% of total N applied. Gaseous loss of S up to 30% was observed during AD while the total N content remained unchanged. Sulfate from untreated CC:straw and digestates was immobilised soon after application to soil, resulting in low availability of inorganic S. Digestion of CC and straw significantly reduced N immobilisation but clearly did not contribute to inorganic S supply.

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Section: N and S Transformations During Adsupporting

confidence: 88%

Nitrogen and Sulfur Availability in Digestates from Anaerobic Co-digestion of Cover Crops, Straw and Cattle Manure

Fontaine

Feng

Labouriau

et al. 2019

J Soil Sci Plant Nutr

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“…Mönch-Tegeder et al [21] pointed out a small effect on degradation kinetics with a cross-flow grinder device application at full-scale. These results agreed with Moset et al [41], who found similar k values between excoriating and chopping grass pretreatment, unfortunately untreated samples were not evaluated. For their part, Herrmann et al [25] described an enhancement of approximately 18% on the methane production rate with a chopping pretreatment of lignocellulosic feedstocks at farm-scale.…”

Section: Effect Of Mechanical Pretreatments On Biochemical Characterisupporting

confidence: 92%

Methods for the Evaluation of Industrial Mechanical Pretreatments before Anaerobic Digesters

Fernandez¹,

Ramirez²,

Franco³

et al. 2020

Molecules

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Different methods were tested to evaluate the performance of a pretreatment before anaerobic digestion. Besides conventional biochemical parameters, such as the biochemical methane potential (BMP), the methane production rate, or the extent of solubilization of organic compounds, methods for physical characterization were also developed in the present work. Criteria, such as the particle size distribution, the water retention capacity, and the rheological properties, were thus measured. These methods were tested on samples taken in two full-scale digesters operating with cattle manure as a substrate and using hammer mills. The comparison of samples taken before and after the pretreatment unit showed no significant improvement in the methane potential. However, the methane production rate increased by 15% and 26% for the two hammer mills, respectively. A relevant improvement of the rheological properties was also observed. This feature is likely correlated with the average reduction in particle size during the pretreatment operation, but these results needs confirmation in a wider range of systems.

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“…So, especial pretreatments are necessary to use such wastes in lower HRT in the anaerobic digestion [67]. In the ACoD procedure, co-substrates addition maintains the C:N ratio in anaerobic digestion reactors [68]. The optimum C:N proportion of each substance obtained from various anaerobic digestion procedure is different.…”

Section: Characteristics Of Substratesmentioning

confidence: 99%

Biomethane Production from Anaerobic Codigestion of Palm Oil Mill Effluent with Cattle Manure: A Review

et al. 2019

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Biogas is conventionally utilized in a gas engine to convert the chemical energy into electricity and into thermal energy for heating purposes and is also pumped into the natural gas grid line after impurities are removed. Biogas production from palm oil mill effluent is one of the best options for economic expansion and this would reduce environmental impacts in developing countries like Malaysia. This study aims to perform an analysis of the economic and environmental prospects of biogas production from the anaerobic codigestion method from palm oil mill effluent mixed with cow manure. Anaerobic codigestion technology is considered a practical process by which to overcome the complications of substance properties and system optimization in particular substance digestion operations. Comparisons among various treatment technologies of palm oil mill effluent and their applications have been studied thoroughly. The factors that affect biogas production, along with strategies for their improvement, were studied in present report. The economic feasibility of biogas plant where palm oil mill effluent and cattle manure are main substrates and anaerobic codigestion is the method, has been successfully predicted. Results revealed this might be more feasible if this technology is used on a large scale. Construction of the proposed biomethanization plant is economically feasible because it is projected that about a four-year return-on-investment will be achieved. In conclusion, the present work demonstrates a comprehensive feasibility framework by which to integrate the different features needed to enhance biomethane generation.

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Co-digestion of cattle manure and grass harvested with different technologies. Effect on methane yield, digestate composition and energy balance

Cited by 28 publications

References 28 publications

Nitrogen and Sulfur Availability in Digestates from Anaerobic Co-digestion of Cover Crops, Straw and Cattle Manure

Nitrogen and Sulfur Availability in Digestates from Anaerobic Co-digestion of Cover Crops, Straw and Cattle Manure

Methods for the Evaluation of Industrial Mechanical Pretreatments before Anaerobic Digesters

Biomethane Production from Anaerobic Codigestion of Palm Oil Mill Effluent with Cattle Manure: A Review

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