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| Registros recuperados: 11 | |
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| Oleskowicz-Popiel, Piotr; Nielsen, Henrik Bangsø; Thomsen, Anne Belinda; Schmidt, Jens Ejbye. |
| The production of bioenergy in organic agriculture (OA) can reduce its dependency on fossil fuels and decrease greenhouse‐gases (GHG) emissions; consequently increasing the sustainability of organic farming. Different biomasses were characterized biologically and chemically for their biogas and bioethanol potential at organic farms in Denmark. Batch experiments indicated methane yield [GJ/ha]: 260.7 (fresh maize), 272.7 (maize silage), 127.1 (fresh rye), 169.7 (rye silage), 161.7 (dried rye), 110.5 (fresh clover), 117.8 (clover silage), 72.3 (dried clover), and 41.1 (dried vetch). Theoretical ethanol yield [GJ/ha] showed: 119.8 (fresh maize), 109.2 (maize silage), 36.9 (fresh rye), 39.9 (rye silage), 84.7 (dried rye), 28.9 (fresh clover), 24.4 (clover... |
| Tipo: Journal paper |
Palavras-chave: Post harvest management and techniques. |
| Ano: 2011 |
URL: http://orgprints.org/19009/4/19009.pdf |
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| Thomsen, Anne Belinda; Arvaniti, Efthalis; Xu, Jian; Oleskowicz-Popiel, Piotr; Frenqvist, Tomas; Schultz-Jensen, Nadja; Kádár, Zsófia; Jensen, Morten; Thomsen, Sune T.; Thygessen, Anders. |
| Pretreatment technologies for production of 2G bioethanol from agricultural waste and crops |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Post harvest management and techniques. |
| Ano: 2010 |
URL: http://orgprints.org/19020/2/19020.pdf |
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| Petersson, Anneli; Thomsen, Mette Hedegaard; Hauggaard-Nielsen, Henrik; Thomsen, Anne Belinda. |
| To meet the increasing need for bioenergy several raw materials have to be considered for the production of e.g. bioethanol and biogas.In this study, three lignocellulosic raw materials were studied, i.e. (1) winter rye straw (Secale cereale L), (2) oilseed rape straw (Brassica napus L.) and (3) faba bean straw (Viciafaba L.). Their composition with regard to cellulose, hemicellulose, lignin, extractives and ash was evaluated, as well as their potential as raw materials for ethanol and biogas production. The materials were pretreated by wet oxidation using parameters previously found to be optimal for pretreatment of corn stover (195 1C, 15 min, 2 g l_1 Na2CO3 and 12 bar oxygen). It was shown that pretreatment was necessary for ethanol production from all... |
| Tipo: Journal paper |
Palavras-chave: Farming Systems Recycling; Balancing and resource management Crop husbandry. |
| Ano: 2007 |
URL: http://orgprints.org/18980/4/18980.pdf |
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| Kádár, Zsófia; Oleskowicz-Popiel, Piotr; Schmidt, Jens Ejbye; Thomsen, Anne Belinda. |
| Organic agriculture is one sustainable alternative to avoid the negative environmental effects often caused by conventional agriculture. BioConcens is an interdisciplinary project aims at developing new biorefinery concept and processes for co-production of bioethanol, biogas and animal feed based on resources from organic agriculture (clover grass, straw) and associated food processing (whey). Bioenergy produced in organic agriculture can reduce its dependency of fossil fuels and decrease greenhouse-gas emission, and at the same time it is important that carbon and nutrients cycle are not influenced negatively. Biogas can be produced from any carbon rich waste/by-product, which can be further utilized in combined heat and power plant to produce heat and... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Post harvest management and techniques. |
| Ano: 2009 |
URL: http://orgprints.org/19023/2/19023.pdf |
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| Kádár, Zsófia; Christensen, Anne Deen; Thomsen, Mette Hedegaard; Thomsen, Anne Belinda. |
| The malting in brewing process develops enzymes that are required to hydrolyze the complex starch in grain into simple fermentable sugars. These proceed the three following steps: Steeping encourages germination to start, germination prepares the conversion of the starch to sugars, and kilning stops the germination. In this study, a method for bioethanol production from rye grain was developed by utilizing the inherent amylase activity from germination of the seed. Grain germination was performed in two steps (steeping, germination) under different conditions, where the effect of temperature, duration and humidity was examined on amylase activity and final ethanol yield. Commercial enzymes were used for reference experiments. Simultaneous... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Post harvest management and techniques. |
| Ano: 2009 |
URL: http://orgprints.org/19026/2/19026.pdf |
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| Oleskowicz-Popiel, Piotr; Thomsen, Mette Hedegaard; Thomsen, Anne Belinda; Schmidt, Jens Ejbye. |
| In order to evaluate new strategies for the production of renewable energy within sustainable organic agriculture, a process-simulation model for a 100 ha organic farm was developed. Data used for the model was obtained from laboratory trials, literature data, consultancy with experts, and results from the BioConcens project (http://www.bioconcens.elr.dk). Different design approaches were evaluated in order to establish the most suitable configuration. Rye grains, clover grass silage, maize silage, whey and cattle manure were selected as raw materials for co-production of fuels, feed and fertilizer at the organic farm, based on the fact that crops grown in organic agriculture act as key carbon sources whereas manure and whey were applied primarily as the... |
| Tipo: Journal paper |
Palavras-chave: Technology assessment; Post harvest management and techniques. |
| Ano: 2009 |
URL: http://orgprints.org/19015/4/19015.pdf |
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| Hauggaard-Nielsen, Henrik; Thomsen, Mette Hedegaard; Petersson, Anneli; van Maarschalkerweerd, Christian; Nielsen, Lars Henrik; Thomsen, Anne Belinda; Jensen, Erik Steen. |
| It is very much debated whether bioethanol is a sustainable energy resource that can offer environmental and long-term economic advantages over fossil fuels, like gasoline or die-sel. From the present first generation bioethanol technology focusing on starch (from grain) fermentation GHG savings are only modest. The Danish Integrated Biomass Utili-sation System (IBUS) has developed both first generation and second generation princi-pal bioethanol technologies characterised by integration with an existing coal-fired Com-bined Heat and Power (CBH) plant. To secure that bioenergy is produced from local adapted raw materials with limited use of non-renewable fossil fuels there is a need for integrating the biomass starting point into the energy manufacturing... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Environmental aspects; Greenhouses and coverings; Air and water emissions. |
| Ano: 2007 |
URL: http://orgprints.org/16234/2/16234.pdf |
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| Registros recuperados: 11 | |
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