Prospective application of farm cattle manure for bioenergy production in Portugal

Monteiro, Eliseu; Mantha, V.; Rouboa, Abel

doi:10.1016/j.renene.2010.08.035

Cited by 57 publications

(27 citation statements)

References 14 publications

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“…[15][16][17]). In Germany, decentralized agricultural biogas production for combined generation of heat and power (CHP) has become a major bioenergy source.…”

Section: Biogas Systemsmentioning

confidence: 99%

Integrated Bioenergy and Food Production—A German Survey on Structure and Developments of Anaerobic Digestion in Organic Farming Systems

et al. 2015

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Rising global energy needs and limited fossil fuel reserves have led to increased use of renewable energies. In Germany, this has entailed massive exploitation of agricultural biomass for biogas generation, associated with unsustainable farming practices. Organic agriculture not only reduces negative environmental impacts, organic farmers were also prime movers in anaerobic digestion (AD) in Germany. This study's aim was to identify the structure, development, and characteristics of biogas production associated with organic farming systems in order to estimate further development, as well as energetic and associated agronomic potentials. Surveys were conducted among organic farms with AD technology. 144 biogas plants could be included in the analysis. Total installed electrical capacity was 30.8 MWel, accounting for only 0.8% of the total installed electrical capacity in the German biogas sector. Recently, larger plant types (>250 kWel) with increased use of (also purchased) energy crops have emerged. Farmers noticed increases in yields (22% on average) and quality of cash crops in arable farming through integrated biogas production. In conclusion, although the share of AD in organic farming is relatively small it can provide various complementary socio-ecological benefits such as the enhancement of food output through digestate fertilization without additional need for land, while simultaneously reducing greenhouse gas emissions from livestock manures and soils. However, to achieve this OPEN ACCESSSustainability 2015, 7 10710 eco-functional intensification, AD systems and their management have to be well adapted to farm size and production focus and based primarily on residue biomass.

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“…[15][16][17]). In Germany, decentralized agricultural biogas production for combined generation of heat and power (CHP) has become a major bioenergy source.…”

Section: Biogas Systemsmentioning

confidence: 99%

Integrated Bioenergy and Food Production—A German Survey on Structure and Developments of Anaerobic Digestion in Organic Farming Systems

et al. 2015

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“…However, the fermentation of manure alone results in lower methane generation due to moderate anaerobic biodegradability of about 45-50 % (Rico et al 2007). Moreover, the biogas production from cattle manure is lower than that obtained from other farm animals, since cattle manure contains leftover lignin complexes from fodder that are very resistant to AD (Monteiro et al 2011). However, the high water content (70-90 %) and buffer capacity of manure have a positive effect on AD stability.…”

Section: Introductionmentioning

confidence: 99%

Effects of co-substrate on biogas production from cattle manure: a review

Tufaner

Avşar

2016

Int. J. Environ. Sci. Technol.

106

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This literature review surveys the previous and current researches on the co-digestion of anaerobic processes and examines the synergies effect of co-digestion with cattle manure. Furthermore, this review also pays attention to different operational conditions like operating temperature, organic loading rate (OLR), hydraulic retention time (HRT), chemical oxygen demand (COD) and volatile solid (VS) removal efficiency and biogas or methane production. This review shows that anaerobic mono-digestion of cattle manure usually causing poor performance and stability. Anaerobic studies were generally performed under mesophilic conditions maintained between 35 and 37°C. Organic waste loading rate generally ranges from 1 to 6 g VS-COD L -1 day -1 stable condition in anaerobic digester. Generally, studies show that HRT for co-digestion of fruit-vegetables waste and industrial organic waste appears to exceed 20 days. However, the anaerobic co-digestion process is generally operated at HRT of between 10 and 20 days. VS and COD removal efficiency usually reaches up to 90 % due to codigestion with different type organic waste. Methane-biogas production is generally obtained between 0.1 and 0.65 L CH 4 -biogas g -1 VS.

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“…However, the fermentation of manure as single substrate provides low methane yield, due to a moderate anaerobic biodegradability of about 45-50 % [61]. Moreover, the biogas production from cattle manure is lower than that obtained from other farm animals, since cattle manure often contains an excess of lignin complexes from fodder that are very resistant to AD [62]. Low biodegradability of animal manure is often caused by large amounts of indigestible fractions such as lignocellulose, an element of the plant cell wall, residual from animal digestion, and composed by hemicellulose, cellulose and lignin.…”

Section: Livestock Manurementioning

confidence: 99%

Recent Updates on the Use of Agro-Food Waste for Biogas Production

et al. 2019

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The production of biogas from anaerobic digestion (AD) of residual agro-food biomasses represents an opportunity for alternative production of energy from renewable sources, according to the European Union legislation on renewable energy. This review provides an overview of the various aspects involved in this process with a focus on the best process conditions to be used for AD-based biogas production from residual agro-food biomasses. After a schematic description of the AD phases, the biogas plants with advanced technologies were described, pointing out the strengths and the weaknesses of the different digester technologies and indicating the main parameters and operating conditions to be monitored. Subsequently, a brief analysis of the factors affecting methane yield from manure AD was conducted and the AD of fruit and vegetables waste was examined. Particular attention was given to studies on co-digestion and pre-treatments as strategies to improve biogas yield. Finally, the selection of specific microorganisms and the genetic manipulation of anaerobic bacteria to speed up the AD process was illustrated. The open challenges concern the achievement of the highest renewable energy yields reusing agro-food waste with the lowest environmental impact and an increment of competitiveness of the agricultural sector in the perspective of a circular economy.

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Prospective application of farm cattle manure for bioenergy production in Portugal

Cited by 57 publications

References 14 publications

Integrated Bioenergy and Food Production—A German Survey on Structure and Developments of Anaerobic Digestion in Organic Farming Systems

Integrated Bioenergy and Food Production—A German Survey on Structure and Developments of Anaerobic Digestion in Organic Farming Systems

Effects of co-substrate on biogas production from cattle manure: a review

Recent Updates on the Use of Agro-Food Waste for Biogas Production

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