National Report Germany english
Transcription
National Report Germany english
IEE-Project FABbiogas BIOGAS PRODUCTION AND BIOGAS POTENTIALS FROM RESIDUES OF THE EUROPEAN FOOD AND BEVERAGE INDUSTRY GERMANY - NATIONAL SITUATION The sole responsibility for the content of this report lies with the authors. It does not necessarily reflect the opinion of the European Union. Neither the EASME nor the European Commission are responsible for any use that may be made of the information contained therein. Table of contents 1 Introduction .................................................................................................................... 1 2 Methodology................................................................................................................... 3 3 Task 1 ............................................................................................................................ 3 3.1 Map showing national biogas plants using FAB industry waste and anaerobic wastewater plants in the food and beverage industry ......................................................... 3 3.2 4 5 TASK 2..........................................................................................................................12 4.1 Maps showing national waste streams of different FAB industry branches .............12 4.2 Basic characteristics of waste streams ...................................................................15 TASK 3..........................................................................................................................18 5.1 6 Basic characteristics of existing biogas plants and anaerobic wastewater plants .... 4 Description of the barriers ......................................................................................18 5.1.1 For biogas plant operators...............................................................................18 5.1.2 For food and beverage producers ...................................................................18 References ....................................................................................................................20 NATIONAL REPORT OF GERMANY This report was written in the frame of the IEE project FABbiogas, which is supported by the Intelligent Energy Europe Programme. The aim of this report is to give an overview of the biogas market in Germany, to evaluate the potential of renewable energy sources from waste in the food and beverage industry (FAB), including the identification of the production of biogas from organic waste, and the untapped potential of organic waste in various industries of food and beverages and to identify non-technological barriers that prevent development and use of renewable energy potential. 1 Introduction The Federal Republic of Germany is located in Central Europe, bordered by the Netherlands, Belgium, Luxembourg and France to the west, Switzerland, Austria to the south and Poland and the Czech Republic to the east and the North and Baltic Sea and Denmark to the north. The total area of Germany is around 357,000 km2 with a population of over 80 million people. For administrative purposes Germany is divided into 16 federal states, 19 government districts, and 295 administrative districts. With the commission of the Renewable Energies Law (EEG) in 2000 the number of biogas plants in Germany continually rose. Especially the amendment of the EEG in 2004 and the new version in 2009 supported the expansion of biogas plants. In 2012 around 7.515 biogas plants in Germany with an installed electrical power of 3.352 MW had been placed. For the year 2013 7.720 and for 2014 a slightly higher number of 7900 biogas plants are predicted, as the quantity of new installations per year clearly declines after 2011 (figure 1) (Fachverband Biogas e. V. 2013). 1 /22 Figure 1: Development of the quantity of biogas plants and installed electrical power in Megawatt (MW) (Fachverband Biogas e. V. 2013). Interviews with 652 operators in 2011/2012 brought out, that the major inputs are energy crops with 49 % and animal manure and slurry with 43 %. Industrial and agricultural residues only account for 1 % of the total input (in relation to mass) (DBFZ 2012). However the number of waste biogas plants continually rises. The current situation is estimated to be (economically) favorable for implementing new waste biogas plants. The economic efficiency of individual biogas plants depends on the amount and quality of the substrate and the utilization of the biogas and the digestate, as well as on the legal framework conditions. Additionally favorable is the current still very moderate interest rate and the feed-in tariff of EEG 2012 for biological waste. Dependent on the specific gas yield and the size of the plant it is possible to generate net revenues ranging between 30 and 45€ per ton of input material for electricity out of waste biogas. (Raussen and Sprick 2012) The advantages of waste biogas plants are the generation of renewable energy in a closed loop (cascade utilization of waste and digestate) and the fact, that no agricultural area is required for biogas production. The possibility of using anaerobic wastewater plants offers another interesting perspective for beverage and food industries to generate and utilize biogas in the own company. The high demand for water and the high organic load of the wastewater with fat, oil or nitrogen or phosphorous rich substances leads to high wastewater charges in public sewage plants. The installation of own anaerobic wastewater plants offers the advantage to save high wastewater charges on the one hand and on the other hand to produce and use biogas as a 2 /22 renewable energy source and generate heat or electricity for the beverage or food manufacturing process. 2 Methodology Because of the huge amount of biogas plants and food and beverage companies in Germany the conduction of interviews with representative firms was considered inappropriate. Additionally, the response rate for novel questioning of biogas operators is very low, because of already existing, frequently distributed surveys. As there is a high interest in biogas in Germany there already exist a lot of studies describing the situation of present biogas plants as well as studies analyzing the remaining potential of substrates for biogas plants, such as FAB wastes. For all tasks an internet research was conducted and existing literature was examined. 3 Task 1 3.1 Map showing national biogas plants using FAB industry waste and anaerobic wastewater plants in the food and beverage industry Based on the literature and internet research we were able to identify 77 biogas plants, using FAB residues as substrates and 17 anaerobic wastewater plants in the food and beverage industry (Figure 2). The following reports were examined (the presented data from the reports was complemented with internet research): Kern and Raussen (2011), Rettenberger, et al. (2012), Witzenhausen-Institut (2008), STmUG (2013). 3 /22 Figure 2: Biogas Plants using FAB industry waste as (co-)substrates (red) and industrial biogas plants (orange) and anaerobic wastewater plants (blue) in the food and beverage industry (Link to the map:https://mapsengine.google.com/map/edit?mid=zUa7GcnHdHSI.ke0xRUcXfTKA) 3.2 Basic characteristics of existing biogas plants and anaerobic wastewater plants In Germany we identified 77 biogas plants which use waste from the food and beverage industry and 17 anaerobic wastewater treatment plants. As we used only literature and internet research to gather information, the datasets in table 1 and 2 are not always 4 /22 complete. We assume that the research covers about 50-60 % of all relevant biogas installations. Most of the biogas plants are Co-Fermentation plants, which also use other substrates. Only eight out of 77 biogas plants use 100 % bio waste from the food or beverage industry, with inputs of substrate between 4.800 and 75.000 t/a. Three of these plants are industrial biogas plants, including two potato processing companies and a slaughterhouse. There are six biogas plants with an input of FAB waste of more than 50.000 t/a. The majority of the plants thus use less than 10.000 t/a (Table 1). Table 1: Biogas plants using FAB waste in Germany classified by federal state * Industrial biogas plants Name Installed Substrate Realized Amount of electrical capacity capacity FAB waste power [kW] [t/a] [t/a] [t/a] Baden-Wuerttemberg BIGA Energie GmbH u. not specified 18.000 not specified 9.000 not specified not specified 5.000 2.500 Biogasanlage Geislingen 1.600 40.000 not specified not specified Biogasanlage Kupferzell 450 not specified not specified 1 1.800 45.000 39.000 2.300 not specified 29.900 30.000 100 299 not specified not specified 1.400 360 17.300 not specified 2.500 480 12.000 6.000 2.000 614 16.000 8.000 5.000 Biogasanlage Augsburg 2.000 55.000 50.000 not specified Biogasanlage Hamlar 1.011 not specified 18.000 18.000 340 not specified 15.000 15.000 not specified 75.000 75.000 not specified 20.900 400 CoKG Bioenergie Mayer GbR Remondis BKF GmbH Vergäungsanlage Leonberg Bavaria Fritz Preissler jun. Abfallwirtschaftszentrum Rothmühle Benc Bioenergiecentrum KG Bioabfallvergärungsanlag e Schwabach Biogasanlage Neunburg Biomethananlage Wolnzach Entsorgungs- und 10.000 (total power) 690 5 /22 Verwertungs GmbH Eggertshofen ERC Landkreis Cham GmbH EVA - Energie- und Verwertungsanlage Johann Greimel Biogasanlage 700 12.700 12.000 3.700 191 10.000 not specified 2.000 500 not specified 12.400 5.100 Installed Substrate Realized Amount of electrical capacity capacity FAB waste power [kW] [t/a] [t/a] [t/a] 328 not specified not specified 510 724 14.000 14.000 6.000 Ludwig Scheugenpflug 570 10.000 10.000 6.800 Martin Bachmayer 320 13.500 10.200 7.400 1.075 14.400 not specified 4.000 361 50.000 not specified 15.000 Name Johann Kinzner Biogasanlage Josef Heißenhuber Biogasanlage Michael Blei GmbH & Co.KG Öko-Power GmbH & Co. Biogas KG Brandenburg Biogasanlage Alteno 1.200 85.000 not specified 16.600 Biogasanlage Gröden 1.600 not specified 110.000 82.300 610 not specified not specified 3.000 1.340 85.000 85.000 13.000 1.202 75.000 75.000 52.000 569 12.000 4.800 4.800 825 18.000 not specified not specified 370 not specified 12.000 1.600 Biogasanlage Hennickendorf Biogasanlagen Fürstenwalde BioKraft Karstädt GmbH Co-Vergärungsanlage Brieske-Senftenberg Hesse Biogasanlage Bebra Biogas- und Kompostierungsanlage Cyriaxweimar 6 /22 Biogaspark Großenlüder Brensbach Biokraft Brensbach GmbH&Co.KG Energor GmbH Gerd Preußner FlörsheimWicker Biogasanlage Infraserv GmbH u. Co. Höchst KG Rhein-Main Biokompost GmbH not specified not specified not specified 8.100 not specified 70.055 11.500 1.500 650 not specified 18.000 4.000 not specified 45.000 45.000 700 5.100 940.000 330.000 52.800 680 33.000 33.000 800 Mecklenburg-Western Pomerania Biogas Barth GmbH 866 73.000 not specified 3.400 Biogasanlage Neubukow 938 80.000 80.000 37.300 2.042 76.500 50.000 3.500 230 18.250 18.250 14.900 ReFood GmbH Niederlassung Malchin Vietlübbe Biogas GmbH Lower Saxony Biogasanlage 700 35.000 15.000 15.000 950 40.900 40.000 11.300 Biogasanlage Werlte 2.500 110.000 not specified 31.800 Biogasanlage Wittmund 2.500 145.000 not specified 108.900 not specified 25.000 not specified 9.800 Dannenberg Biogasanlage Surwold BiorekLathen Biogasanlage Name Bollmer Umwelt GmbH Installed Substrate Realized Amount of electrical capacity capacity FAB waste power [kW] [t/a] [t/a] [t/a] 3.500 120.000 not specified 99.000 not specified 73.000 not specified 21.900 not specified 90.000 30.000 7.900 GEV Gehlenberger Bioenergie GmbH & Co. KG Heinfelder Bioenergie GmbH & Co. KG 7 /22 Lutterhof Biogas Oehmer Bio Energie GmbH & Co. KG Rotenburger Rohstoff und Energie GmbH & Co. KG Vergärungsanlage Bardowick Vergärungsanlage Watenbüttel Warmser Bioenergie GmbH & Co. KG 350 11.000 11.000 4.500 not specified 51.100 44.000 40.300 1.020 40.150 30.000 13.400 2.128 40.000 36.500 22.400 not specified 20.000 20.000 500 not specified 10.000 10.000 10.000 8 /22 Name Installed Substrate Realized Amount of electrical capacity capacity FAB waste power [kW] [t/a] [t/a] [t/a] North Rhine-Westphalia Biogasanlage Borchen Brakel-Beller Bioenergie Faultürme der Kläranlage Krefeld Holz GmbH & Co. KG Kompost- und Vergärungsanlage Lemgo Loick Bioenergie GmbH M & H Glitz-Ehringhausen Biogas GmbH & Co. KG Neue Energie GmbH Vergärungsanlage Gescher 480 not specified 20.000 18.000 not specified 3.800 3.800 1.400 not specified 547.500 376.600 47.000 not specified 7.900 not specified 1.300 938 66.000 not specified 60 not specified not specified not specified 4.000 not specified 12.000 12.000 1.000 not specified not specified 8.000 2.000 500 18.000 18.000 2.000 4.900 not specified 5.000 536 24.200 24.200 2.200 744 40.000 not specified not specified 720 not specified 37.500 37.500 760 60.000 56.000 5.000 700 30.000 5.000 2.300 Rhineland-Palatinate Schönberger Andreas 110 Saxony Abfallbehandlungsanlage Thallwitz Biogasanlage Zobes Biogasanlagen Weidensdorf Co-Fermentationsanlage Radeberg LRZ Landhandels- und Recycling-Zentrum GmbH Saxony-Anhalt Biogasanlage Möckern* 330 not specified 12.400 12.400 856 30.000 24.000 1.200 not specified 110.000 60.000 16.100 1.886 73.000 42.500 8.000 Biogas- und Kompostierungsanlage Weißenfels Biogasanlage Schkopau SARIA ReFood GmbH 9 /22 Niederlassung Genthin Schradenbiogas GmbH & Co. KG not specified 40.200 not specified 6.700 21.000 4.000 Schleswig-Holstein Vergärungsanlage Kiel 536 21.000 In figure 3 you can see the total amount of FAB waste used in the examined biogas plants for each federal state. Lower Saxony has by far the highest input of FAB waste, followed by Bavaria and Brandenburg. The remaining federal states use far fewer amounts of FAB waste for biogas production. Bavaria is the federal state with most of the biogas plants followed by 1000 t/a Lower-Saxony and North Rhine-Westphalia. 450.0 400.0 350.0 300.0 250.0 200.0 150.0 100.0 50.0 0.0 Amount of FAB waste used Number of biogas plants 20 18 16 14 12 10 8 6 4 2 0 Figure 3: Amount of FAB waste and number of biogas plant classified by federal states Additionally to the above named biogas plants 17 anaerobic wastewater treatment plants in the food and beverage industry were identified. Twelve of these industrial plants are integrated into breweries and one each in the beverage, chees, yeast and tea producing industry. By far most of the wastewater plants are located in Bavaria. Table 2 gives more detailed information on the characteristics of the different wastewater plants. The produced 10 /22 biogas is utilized in the own company to generate process heat and or electricity. The breweries are thus able to cover around 10% to 20% of their total heat demand and the yeast producing company can cover 72% of the total electricity demand. Table 2 Characteristics of the anaerobic wastewater treatment plants in the German beverage and food industry Name Industry Utilization of the Biogas Energie production Bavaria Andreas Leikeim GmbH & Co KG Augustiner-Bräu Wagner KG Kulmbacher Brauerei AktienGesellschaft Brewery Brewery Brewery Heating boiler Not specified Co-firing 18% of the total heat facility demand Heating 10% of the total heat boiler demand CHP or MB-Holding GmbH & Co. KG Tea production Heating Not specified boiler Oettinger Brauerei GmbH Brewery Paulaner Brauerei & Co. KG Brewery Privatbrauerei Erdinger Brewery Weißbräu Pyraser Landbrauerei GmbH & Co. KG Brewery Heating boiler Not specified Co-firing 18% of the total heat facility demand CHP Not specified Heating boiler Not specified Hesse Licher Privatbrauerei Ihring Melchior GmbH und Co. KG Brewery CHP 417 000 kWhel. Lower-Saxony Yeast Hefefabrik Leiber GmbH production CHP 72% of the total electricity demand Mecklenburg-Western Pomerania DMK Deutsches Milchkontor GmbH Käseproduktio n CHP Not specified North Rhine-Westphalia 11 /22 H. Borgmeier GmbH & Co. KG Slaughterhous e Beverage Valensina GmbH production Not specified Not specified Not specified Not specified Rhineland-Palatinate CHP or Bitburger Braugruppe GmbH Brewery Heating boiler 2 300 000 kWhtherm. 1 900 000 kWhel. Saarland Karlsberg Brauerei GmbH Brewery CHP Not specified CHP Not specified CHP Not specified Saxony-Anhalt Hasseröder Brauerei GmbH Brewery Thuringia Privatbrauerei Metzler GmbH & Co. KG 4 Brewery TASK 2 4.1 Maps showing national waste streams of different FAB industry branches In Germany it is not possible to publish data from any companies without a specific permission. Because of the high competition among companies in the same branch many firms do not want their data to be published. One possibility to avoid tracing back to a single company is to gather aggregated data. The literature we examined for task 2 therefore only provided data with aggregated values for the federal states of Germany (Gaida, et al. 2013). Unfortunately it is not possible to show the boundaries of the federal states in Google Maps (Link to the map: https://mapsengine.google.com/map/edit?mid=zUa7GcnHdHSI.ke0xRUcXfTKA). With the program Cadenza Professional an alternative map was created to show the waste production in Germany for the different federal states more clearly (figure 5). 12 /22 Figure 4: National waste streams of the different FAB industry branches in each federal state (data based on Gaida et al. 2013) To secure the data integrity of the participating industries in its survey, Gaida, et al. (2013) aggregated the produced amount of waste for some of the federal states. In order to estimate the production for each state, the amount was divided through the number of FAB industries in these states and subsequently allocated to each single state. If there was no information of Gaida, et al. (2013) on the dry matter content which was needed for calculations, data of KTBL (2013) was used. 13 /22 The unit t/a refers to tons of fresh matter per year. Meat & fish = slaughter, meat and fish processing; Fruit & vegetable = fruit and vegetable processing; Fat & oil = production of vegetable and animal oils and fats; Dairy = milk processing; Starch = starch (products) production and milling and hulling industry; Baking = production of bakery products and pasta; Sugar & confectionary = production of sugar and confectionary products; Distilleries and wine = distilleries, wineries and wine press houses; Breweries and malt = production of brewery and malt products; Coffe & tea = processing of coffee and tea and production of coffee substitutes; Other = production of condiments, sauces, convenience food, and dietary and other foodstuffs Gaida, et al. (2013) identified 1.894 German FAB companies and gathered information from 1.767 companies. Altogether they produced approximately 35 million tons of fresh waste, which corresponds to more than 13 million tons of dry organic waste. In figure 5 one can see that in most of the federal states the dominating waste producers are dairy, fat and oil, starch and sugar and confectionary companies. In Saarland and Berlin starch production (including cereal processing) is by far the main contributor to organic waste from FAB industries. Figure 5 shows the number of FAB companies and the amount of produced waste for the federal states. It is remarkable, that the four states Baden-Wuerttemberg, Bavaria, Lower Saxony and North Rhine-Westphalia hold by far the most FAB companies and produce the biggest amount of organic waste. 14 /22 Mio. t/a 8.0 400 7.0 350 6.0 300 5.0 250 4.0 200 3.0 150 2.0 100 1.0 50 0.0 0 total FAB waste number of FAB companies Figure 5: Amount of FAB waste and number of FAB companies classified by federal states 4.2 Basic characteristics of waste streams Gaida, et al. (2013) not only analyzed the FAB waste production in Germany but also the utilization of the different waste types. As the total waste in Germany is used in any possible way and almost nothing remains unused (disposed), the authors defined a potential, which could be redirected into higher-value utilization. This “redirectable” potential contains all waste streams, which are currently disposed (external thermal or energetic utilization) or exported. Table 2 summarizes the total FAB waste production, the number of companies in the different FAB industry branches, the current utilization and the “redirectable” potential of the different waste fractions in Germany. The biggest “redirectable” potential with 600.000 t/a lies in the sugar and confectionary industry followed by distilleries and wine press houses with 410.000 t/a and breweries and malt production with 330.000 t/a . In “Other” food industries another amount of 160.000 t/a could be “redirected”. To “other” industries belong the production of condiments, sauces, convenience food, and dietary and other foodstuffs. The highest production of sugar and confectionary wastes is found in North RhineWestphalia, Lower-Saxony and Saxony-Anhalt. The highest amount of distillery and wine house waste accumulates in Rhineland-Palatinate, followed by Baden-Wuerttemberg and 15 /22 Hesse. Breweries, malt production and “other” food waste is mostly produced in Bavaria and North Rhine-Westphalia Altogether a “redirectable” potential of 1,5 Mio. t/a is estimated for Germany. This represents 4 % of the total waste production of the German FAB industries. It was though not possible to draw specific potentials for all waste types. The majority of the waste when producing fruit and vegetables, fat and oil and dairy products or starch is used as feed. It might be possible, that in future, the utilization of these waste types in biogas plants becomes more profitable. However there remain still questions about the ecological aspects when feed has to be substituted (for example through import). More interesting is the possible utilization of the waste from the baking industry. There do not yet exist well-established utilization paths and further investigation should be done to uncover important potentials. During starch production the accumulated powder is currently burned (Gaida, et al. 2013). This waste fraction could also be an advantageous substrate for biogas plants. Assuming an average methane production rate of 615 Nm3/t oDM for bio waste with a mean organic dry matter (oDM) of 50 % of the total dry matter (DM), the yield of the total FAB waste amount produced in Germany is more than 4.000 million standard m3 biogas, which corresponds to around 2.500 million standard m3 methane. The yield of the “redirectable potential” is estimated to be around 120 million standard m3 methane (KTBL 2013). 16 /22 Table 3: Current utilization and „redirectable“ potential of the different waste types (Gaida, et al. 2013) Waste type Meat and fish industry Number of Production Main current „Redirectable“ companies [t/a] utilization potential [t/a] 454 1.620.000 94 890.000 41 6.900.000 119 11.800.000 85 4.910.000 Fruit and vegetable industry Fat and oil production Dairy industry Feed, fertilisation, oleochemistry Feed, biogas plant, material use Feed (100%) Feed, biogas plant, material use 0 not specified not specified not specified Starch production and cereal Feed, material use not specified processing No well-established Baking industry 410 600.000 utilization, thermal not specified use Sugar and confectionary 108 4.840.000 Feed, thermal use 600.000 65 600.000 Fertilisation, feed 410.000 187 2.430.000 Fertilisation, feed 330.000 31 70.000 173 180.000 1.767 34.840.000 industry Distilleries and wine press houses Breweries and malt production Coffee and tea processing Other Total Potential methane yield [Mio. Nm3] Biogas plants, thermal use (intern) Feed, biotechnology 5.000 160.000 1.510.000 120 17 /22 5 TASK 3 5.1 Description of the barriers 5.1.1 For biogas plant operators The ongoing debate about the implementation of energy system transformation in Germany leads to rapid changes in the legal framework and thus in the long-term predictable feed-in tariffs of the EEG. Given the long planning time, the authorization and the construction of a biogas plant of two to three years, these rapid changes are less conducive for the realization of new biogas projects (Raussen and Sprick 2012). The latest amendment of the EEG (EEG 2012) only offers the basic feed-in tariff for CoFermentation plants with less than 90 % bio waste. An extra and about 2 to 8 ct/kWh higher feed-in tariff is offered, if more than 90% bio waste is used. Another important financial aspect is the price for the substrate. Some years ago, before and at the beginning of the biogas boom, the industries had to pay fees in order to get the waste treated in a biogas plant. Today the plant operators have to pay to get the waste. In recently conducted survey 218 biogas operators in Bavaria were questioned about the economic situation of their biogas plants. The most frequent stated reason for a bad economic situation was the cost for the substrate (C.A.R.M.E.N. 2013). Brohmann, Hennenberg and Hünecke (2008) sighted literature and questioned biogas experts about non-technical barriers preventing the implementation of biogas production. The most important barriers were acceptance problems with higher traffic volume, odor emissions and noise and lack of knowledge. 5.1.2 For food and beverage producers For the industry in particular economic aspects play an important role for the choice of the waste utilization. For many waste types selling the residues, especially as feed, is the economical best way. If the waste is being used internally, the utilization process must be well-planned and often requires high storage costs in order to avoid a stop of the production. In particular the storage of highly perishable goods is difficult and expensive (Gaida, et al. 2013). The authorization of a biogas plant using bio waste is very complex and often leads to problems. In Germany there exist a high number of different legislations and norms for biogas plants which are to be considered. These legislations are constantly changing and are 18 /22 therefore not adjusted to each other very well. In addition, the implementation of the legislations differs in the federal states, which for some states results in different requirements. (Loibl 2004) To find the best and most suitable solution for waste utilization it is necessary to conduct case-by-case preliminary feasibility studies, which take all the operational, regional and ecological characteristics into account (Gaida, et al. 2013). 19 /22 6 References Brohmann, Bettina, Klaus Hennenberg, and Katja Hünecke. Materialband: K. Hemmnisanalyse Biogasausbau. Ifeu - Institut für Energie- und Umweltforschung, 2008. C.A.R.M.E.N. Konjunkturumfrage bei Biogasanlagenbetreibern 29.01.2013. C.A.R.M.E.N. e. V., 2013. in Bayern. Stand: DBFZ. Monitoring zur Wirkung des Erneuerbare- Energien-Gesetz (EEG) auf die Entwicklung der Stromerzeugung aus Biomasse. Endbericht zur EEG-Periode 2009 bis 2011. Deutsches Biomasseforschungszentrum (DBFZ) gGmbH, 2012. Fachverband Biogas e. V. "Branchenzahlen - Prognose 2013 / 2014." http://www.biogas.org/edcom/webfvb.nsf/id/DE_Branchenzahlen/$file/13-1111_Biogas%20Branchenzahlen_2013-2014.pdf (accessed 12 17, 2013). 2013. Gaida, Bente, Ina Schüttmann, Holger Zorn, and Bernd Mahro. "Bestandsaufnahme zum biogenen Reststoffpotential der deutschen Lebensmittel- und Biotechnik-Industrie." Schlussbericht zum Forschungsvorhaben , 2013. Kern, Michael, and Thomas Raussen. Biogas-Atlas 2011/12 - Anlagenhandbuch der Vergärung biogener Abfälle in Deutschland. Witzenhausen, 2011. KTBL. Wirtschaftlichkeitsrechner Biogas. Kuratorium für Technik und Bauwesen in der Landwirtschaft e. V. 2013. http://daten.ktbl.de/biogas/startseite.do#anwendung (Zugriff am 16. 12 2013). Loibl, Helmut. "Genehmigungen und Genehmigungsprobleme bei Biogasanlagen." 2004. http://www.paluka.de/fileadmin/paluka/pdf/biogasrenex.pdf (accessed 12 16, 2013). Raussen, T., and W. Sprick. "6. Biomasseforum 2012. Kosten- und Erlösstruktur integrierter Bioabfallvergärungs- und Kompostierungsanlagen." 2012. Rettenberger, Gerhard, Stepanka Urban-Kiss, Rolf Schneider, Joachim Müsken, and Gerhard Kruse. Erfassung des Anlagenbestands Bioabfallbehandlung - ''Handbuch. Bioabfallbehandlung''. Umweltbundesamt, 2012. STmUG. Energie-Atlas Bayern 2.0. Biogasanlagen. Bayerisches Staatsministerium für Umwelt und Verbraucherschutz. 2013. http://geoportal.bayern.de/energieatlaskarten/?2 (accessed 12 16, 2013). Witzenhausen-Institut. Optimierung der biologischen Abfallbehandlung Witzenhausen-Institut für Abfall, Umwelt und Energie GmbH, 2008. in Hessen. 20 /22