Monika Heiermann

Leibniz Institute for Agricultural Engineering and Bioeconomy

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Matthias Plöchl

Awite Bioenergie (Germany)

Annette Prochnow

Leibniz Institute for Agricultural Engineering and Bioeconomy

Christiane Herrmann

Leibniz Institute for Agricultural Engineering and Bioeconomy

Udo Reichl

Max Planck Institute for Dynamics of Complex Technical Systems

Fabian Kohrs

Otto-von-Guericke University Magdeburg

Jörn Budde

Leibniz Institute for Agricultural Engineering and Bioeconomy

Dirk Benndorf

Anhalt University of Applied Sciences

Michael Klocke

Humboldt-Universität zu Berlin

Robert Heyer

Bielefeld University

Irena Maus

Bielefeld University

Cooperative Institutions

Leibniz Institute for Agricultural Engineering and Bioeconomy

Leibniz Association

Otto-von-Guericke University Magdeburg

Max Planck Institute for Dynamics of Complex Technical Systems

Max Planck Society

Humboldt-Universität zu Berlin

Leibniz Institute for Neurobiology

University of Rostock

Rothamsted Research

University of Giessen

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Installation of a Feed-and-Turn Dryer: An Option to improve Heat Utilization and Economy of an existing Biogas Plant

Jörn Budde Matthias Plöchl Christoph Luckhaus Monika Heiermann

Feed-and-turn dryers may be installed in order to use excess heat from biogas CHPs especially in agricultural enterprises with otherwise low heat utilization. These dryers can be used for drying a manifold of agricultural produce. In this case draff, maize silage and saw dust were investigated. The focus was on drying effectiveness, economic benefits and probable changes in chemical composition of the materials investigated. Results demonstrate that the installation of the feed-and-turn dryer is a substantial improvement of the biogas plant. In the case investigated it significantly improves the energy efficiency by increasing heat utilization from 6,669 GJ·a -1 in 2007 to more than 27,542 GJ·a -1 in 2009. It provides, in addition, the agricultural enterprise with valuable equipment for producing high quality and high valuable feed and other products. Finally, on-farm drying generates an additional income compared to purchasing equivalent products or to external drying.

Biogas

Silage

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Hygiene and Sanitation in Biogas Plants

Advances in biochemical engineering, biotechnology (2015)

Bianca Fröschle Monika Heiermann Michael Lebuhn Ute Messelhäußer Matthias Plöchl

Digestate

Biogas

10.1007/978-3-319-21993-6_3

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Citations (29)

Biogas aus NaWaRos durch Trockenfermentation

Landtechnik (2007)

Monika Heiermann Bernd Linke Uwe Kessler Rudolf Loock

Funktion, Leistung und Betriebssicherheit der Biogaserzeugung durch das Trocken-Nass-Simultan-Verfahren der Firma Loock Consultants wurden am Standort Pirow untersucht. Neben der Erfassung von Prozessdaten und Bilanzierung der Befullungs- und Ausbringungsmassen wurden die Substrate charakterisiert und das Gaspotenzial bestimmt. Es konnte gezeigt werden, dass ein Gemisch aus 60 Ma.% Maissilage, 13 Ma.% Putenmist und 27 Ma.% Garrest nach drei Wochen Fermentationszeit eine Methanausbeute von 90 m3t-1 Frischmasse liefert. Die Maissilage erzielt eine spez. Methanausbeute von 0,34 m3kg-1 oTS, wie sie auch bei Nassvergarung erreicht wird.

10.15150/lt.2007.919

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Biogas crops - impact of supply chain and feedstock characteristics on methane yield.

Agricultural and biosystems engineering for a sustainable world. International Conference on Agricultural Engineering, Hersonissos, Crete, Greece, 23-25 June, 2008 (2008)

Christiane Herrmann Monika Heiermann C. Idler Volkhard Scholz

Biogas

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Particle Size Reduction During Harvesting of Crop Feedstock for Biogas Production II: Effects on Energy Balance, Greenhouse Gas Emissions and Profitability

BioEnergy Research (2012)

Christiane Herrmann Annette Prochnow Monika Heiermann C. Idler

Biogas

Energy crop

10.1007/s12155-012-9207-1

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Citations (25)

Prospects of grassland use for bioenergy resource.

Aspects of applied biology (2008)

K. Goedeke Annette Prochnow Monika Heiermann Matthias Ploechl Herbert Hochberg

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Influence of silage additives on methane yield and economic performance of selected feedstock

Deleted Journal (2009)

Matthias Ploechl H. Zacharias Christiane Herrmann Monika Heiermann Annette Prochnow

Ensiling is an appropriate way of preserving feedstock for anaerobic digestion. Biological and chemical silage additives were used to improve silage quality and to prevent silage losses due to aerobic instability. Lab-scale experiments were conducted using alfalfa, grass and maize. Silages without additives and with chemical and biological additives were compared to the fresh material as well. The effect of silage additives was investigated using batch anaerobic digestion tests and comparing the results on an organic dry matter basis as well as on a hectare basis. In an economic assessment the costs of silage additives were compared to the additional proceeds which can be achieved from improving digestability and preventing silage losses. There seems to be some evidence that there is a correlation between organic acid content of silages and methane yield on organic dry matter basis. Considering aerobic instability of opened silos the additional income can over-compensate the costs of the application of chemical additives.

Silage

Hectare

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Citations (35)

On phytosanitary risk associated with the anaerobic digestion of plant biomass in biogas plant - a joint project.

Julius-Kühn-Archiv (2010)

Martina Bandte Pascale Müller Bernd Rodemann Magdalene Pietsch Paula R. Westermann

Phytosanitary certification

Biogas

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Seed Survival in Silage: Reviewing 90 Years of Research

Plants (2025)

Juliane Hahn Jürgen Müller Monika Heiermann

The preservation of biomasses through ensiling has a long history, and its sustainability has many aspects. One that is rarely considered is that the seeds of a wide variety of plants can enter the ensiling process with the plant biomass. This concise review provides an overview of the probability of seed survival in various types of silage since the 1930s. All data extracted from the reviewed studies are made available in a repository. The key finding from the 90 years of research is that ensiling can reduce the viability of plant seeds, but the seeds of some plant species can survive ensiling. Thus, silage production is both (1) a potential tool to ensure the sustainable, i.e., weed-free, use of plant biomass in agricultural production, including animal production chains, and (2) a potential gateway for weed spread, especially with regard to the closed material loops in circular bioeconomy approaches. The search for seed-borne factors and ensiling conditions that promote seed survival or killing is still ongoing and should be the subject of future research.

Silage

10.3390/plants14030351

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Which silage additives for biogas plants? Transforming fuel plants efficiently into methane.

H. Zacharias Matthias Plöchl Christiane Herrmann Monika Heiermann Horst Auerbach

Silage

Biogas

Methane Emissions

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Citations (1)