Biogas production from energy crops in northern Greece: economics of electricity generation associated with heat recovery in a greenhouse

2016 ◽  
Vol 19 (4) ◽  
pp. 1147-1167 ◽  
Author(s):  
Giorgos Markou ◽  
Mathieu Brulé ◽  
Athanasios Balafoutis ◽  
Michael Kornaros ◽  
Dimitris Georgakakis ◽  
...  
Keyword(s):  
Electricity Generation ◽  
Heat Recovery ◽  
Biogas Production ◽  
Energy Crops ◽  
Northern Greece

scholarly journals Life Cycle Assessment and Soil Nitrogen Balance of Different N Fertilizers for Top Dressing Rye as Energy Crop for Electricity Generation

Agronomy ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 844
Author(s):  
Carlos Martín Sastre ◽  
Ruth Barro ◽  
Yolanda González-Arechavala ◽  
Ana Santos-Montes ◽  
Pilar Ciria
Keyword(s):  
Ammonium Nitrate ◽  
Ammonium Sulphate ◽  
Soil Nitrogen ◽  
Value Chain ◽  
Electricity Generation ◽  
Energy Crops ◽  
Nitrogen Fertilizers ◽  
Calcium Ammonium Nitrate ◽  
Sustainability Criteria ◽  
Ghg Savings

Nitrogen fertilizers have been identified in energy crops LCAs as the main contributors to global warming, as well as to many other environmental impacts. The distinct production process and application emissions of nitrogen fertilizer types for top dressing produce different GHG savings when energy crops value chains are compared to fossil energy alternatives. In this study, three types of fertilizers (calcium ammonium nitrate, urea and ammonium sulphate) at N top dressing rates of 80 kg N/ha are used to grow rye for electricity generation under the conditions of the Continental Mediterranean climate of central-northern Spain. Complete LCAs for the whole value chain based on real data were performed in conjunction with soil nitrogen balances (SNBs) to assess the accomplishment of European Union (EU) GHG savings sustainability criteria, as well as the sustainability of fertilization practices for soil nitrogen stocks. The results obtained can provide interesting insights for policy making, since calcium ammonium nitrate, the most common fertilizer for rye crops, led to 66% GHG savings, as opposed to the 69% achieved when applying urea and 77% when ammonium sulphate was used. Nevertheless, the three fertilizers produced annual soil deficits greater than 50 kg N/ha. In order to ensure savings above 80%, as required by the EU sustainability criteria, and sustainable SNBs, additional optimization measures should be taken at key points of the value chain.

Emergy analysis of biogas production and electricity generation from small-scale agricultural digesters

2011 ◽  
Vol 37 (11) ◽  
pp. 1681-1691 ◽  
Author(s):  
Richard J. Ciotola ◽  
Stephanie Lansing ◽  
Jay F. Martin
Keyword(s):  
Electricity Generation ◽  
Biogas Production ◽  
Small Scale ◽  
Emergy Analysis

Optimal combination of energy crops under different policy scenarios; The case of Northern Greece

Energy Policy ◽  
2016 ◽  
Vol 96 ◽  
pp. 607-616 ◽  
Author(s):  
Eleni Zafeiriou ◽  
Konstantinos Petridis ◽  
Christos Karelakis ◽  
Garyfallos Arabatzis
Keyword(s):  
Energy Crops ◽  
Optimal Combination ◽  
Northern Greece ◽  
Policy Scenarios

The environmental effect of substituting energy crops for food waste as feedstock for biogas production

Energy ◽  
2017 ◽  
Vol 137 ◽  
pp. 1130-1143 ◽  
Author(s):  
Lucía Lijó ◽  
Sara González-García ◽  
Jacopo Bacenetti ◽  
Maria Teresa Moreira
Keyword(s):  
Food Waste ◽  
Environmental Effect ◽  
Biogas Production ◽  
Energy Crops

The valuation of malnutrition in the mono-digestion of maize silage by anaerobic batch tests

2008 ◽  
Vol 58 (7) ◽  
pp. 1453-1459 ◽  
Author(s):  
L. Hinken ◽  
I. Urban ◽  
E. Haun ◽  
I. Urban ◽  
D. Weichgrebe ◽  
...  
Keyword(s):  
Trace Elements ◽  
Anaerobic Digestion ◽  
Trace Element ◽  
Biogas Production ◽  
Renewable Energy Sources ◽  
Anaerobic Bacteria ◽  
Trace Element Content ◽  
Energy Crops ◽  
Maize Silage ◽  
Batch Tests

Anaerobic digestion is a technology which is used to produce methane from organic solids and energy crops. Especially in recent years, the fermentation of energy crops has become more and more important because of increasing costs for energy and special benefits for renewable energy sources in Germany. Anaerobic bacteria require macro and micro nutrients to grow. Absence of these elements can inhibit the anaerobic process significantly. In particular mono-substrates like maize or certain industrial wastewater often cannot provide all required nutrients. For this reason this research investigates the influence of substrate and trace elements on anaerobic digestion in detail. Different agricultural anaerobic biomasses are analysed with special regard to their trace element content. Based on these results, the influence of three trace elements (iron, cobalt, and nickel) on anaerobic digestion was studied in anaerobic batch tests at different sludge loading rates and for different substrates (maize and acetate). Biogas production was found to be 35% for maize silage and up to 70% higher for acetate with trace element dosage than in the reference reactor.

Alkaline hydrogen peroxide pretreatment of energy crops for biogas production

2014 ◽  
Vol 68 (7) ◽  
Author(s):  
Karina Michalsk ◽  
Stanisław Ledakowicz
Keyword(s):  
Hydrogen Peroxide ◽  
Biogas Production ◽  
Energy Crops ◽  
Alkaline Hydrogen Peroxide ◽  
High Concentration ◽  
H2o2 Decomposition ◽  
Miscanthus Giganteus ◽  
Alkaline Conditions ◽  
Plant Sources ◽  
H2o2 Pretreatment

AbstractIn this study, the influence of alkaline hydrogen peroxide (H2O2) pretreatment of the three different plant sources: Miscanthus giganteus, Sorghum Moench, and Sida hermaphrodita, for biogas production was investigated. The influence of temperature, reaction time, and H2O2 concentration on the efficiency of biomass degradation and on the further methanogenic fermentation were studied. The results obtained after chemical pretreatment indicate that using H2O2 at alkaline conditions leads to the decomposition of three major structures: lignin, hemicellulose, and cellulose. The best results were achieved for the process performed at 25°C for 24 h with the use of a 5 mass % H2O2 solution. Although the degradation level was very high for all three plant sources, the biogas production from the energy crops pretreated chemically was strongly inhibited by byproducts and the residual oxygen formed after H2O2 decomposition. This fact indicates that alkaline H2O2 pretreatment is a very promising method for plant material degradation for further biogas production, but pretreated biomass must be separated from supernatant before the fermentation process because of the high concentration of inhibitors in the hydrolysates. The best results were obtained for Sida with biogas and methane production of 2.29 Ndm3 and 1.06 Ndm3, respectively.

Sign in / Sign up

Export Citation Format

Share Document