Responsive image


Suitability of paludiculture biomass as biogas substrate biogas yield and long-term effects on anaerobic digestion

Hartung, C.; Andrade, D.; Dandikas, V.; Eickenscheidt, T.; Drösler, M.; Zollfrank, C....

Renewable Energy 159, S. 64-71.
DOI: 10.1016/j.renene.2020.05.156

mehr

Paludikulturen für Niedermoorböden in Bayern – Etablierung, Klimarelevanz & Umwelteffekte, Verwertungsmöglichkeiten und Wirtschaftlichkeit (MOORuse)

Drösler, M.; Eickenscheidt, T.; Bodmer, U.; Heuwinkel, H.; Meinken, E.; Moning, C....

Forschungsbericht der Hochschule Weihenstephan-Triesdorf.


Predicting Specific Biogas Yield of Maize-Validation of Different Model Approaches

Rath, J.; Heuwinkel, H.; Taube, F.; Herrmann, A. (2014)

BioEnergy Research 8, S. 832-842.
DOI: 10.1007/s12155-014-9562-1

mehr

Correlation between biogas yield and chemical composition of energy crops

Dandikas, V.; Heuwinkel, H.; Lichti, F.; Drewes, J.; Koch, K. (2014)

Bioresource Technology 174, S. 316-320.
DOI: 10.1016/j.biortech.2014.10.019

mehr

Stable carbon isotopes of methane for real‐time process monitoring in anaerobic digesters

Polag, D.; Krapf, L.; Heuwinkel, H.; Laukenmann, S.; Lelieveld, J.; Keppler, F. (2014)

Engineering in Life Sciences 14 (2), S. 153-160.
DOI: 10.1002/elsc.201200201

mehr

Evidence of anaerobic syntrophic acetate oxidation in biogas batch reactors by analysis of 13C carbon isotopes

Polag, D.; Heuwinkel, H.; Laukenmann, S.; Greule, M.; Keppler, F. (2013)

Isotopes in Environmental and Health Studies 49 (3), S. 365-377.
DOI: 10.1080/10256016.2013.805758

mehr

Specific Biogas Yield of Maize Can Be Predicted by the Interaction of Four Biochemical Constituents

Rath, J.; Heuwinkel, H.; Herrmann, A. (2013)

BioEnergy Research 6 (3), S. 939-952.
DOI: 10.1007/s12155-013-9318-3

mehr

Transfer of a near infrared spectroscopy laboratory application to an online process analyser for in situ monitoring of anaerobic digestion

Krapf, L.; Nast, D.; Gronauer, A.; Schmidhalter, U.; Heuwinkel, H. (2013)

Bioresource Technology 129, S. 39-50.
DOI: 10.1016/j.biortech.2012.11.027

mehr

The potential for online monitoring of short-term process dynamics in anaerobic digestion using near-infrared spectroscopy

Krapf, L.; Heuwinkel, H.; Schmidhalter, U.; Gronauer, A. (2013)

Biomass and Bioenergy (48), S. 224-230.
DOI: 10.1016/j.biombioe.2012.10.027

mehr

Evaluation of Agricultural Feedstock-Robust near Infrared Calibrations for the Estimation of Process Parameters in Anaerobic Digestion

Krapf, L.; Gronauer, A.; Schmidhalter, U.; Heuwinkel, H. (2012)

Journal of Near Infrared Spectroscopy 20 (4), S. 465-476.
DOI: 10.1255%2Fjnirs.1013

mehr

Comparative efficacy of urea fertilization via supergranules versus prills on nitrogen distribution, yield response and nitrogen use efficiency of spring wheat

Khalil, M.; Schmidhalter, U.; Gutser, R.; Heuwinkel, H. (2011)

Journal of Plant Nutrition 34 (6), S. 779-797.
DOI: 10.1080/01904167.2011.544349

mehr

Near infrared spectroscopy calibrations for the estimation of process parameters of anaerobic digestion of energy crops and livestock residues

Krapf, L.; Gronauer, A.; Schmidhalter, U.; Heuwinkel, H. (2011)

Journal of Near Infrared Spectroscopy 19 (6), S. 479-493.
DOI: 10.1255%2Fjnirs.960

mehr

Identification of methanogenic pathways in anaerobic digesters using stable carbon isotopes

Laukenmann, S.; Polag, D.; Heuwinkel, H.; Greule, M.; Gronauer, A.; Lelieveld, J....

Engineering in Life Sciences 10 (6), S. 509-514.
DOI: 10.1002/elsc.201000074

mehr

Measurements of 13C/12C Methane from Anaerobic Digesters: Comparison of Optical Spectrometry with Continuous-Flow Isotope Ratio Mass Spectrometry

Keppler, F.; Laukenmann, S.; Rinne, J.; Heuwinkel, H.; Greule, M.; Whiticar, M....

Environmental Science & Technology 44 (13), S. 5067-5073.
DOI: 10.1021/es100460d

mehr

N-Umsatz im Boden nach Applikation verschiedener N-Dünger im ökologischen Freilandgemüsebau

Kreppold, J.; Ebertseder, T.; Schmidhalter, U.; Heuwinkel, H. (2009)

Vortrag auf dem 121. VDLUFA-Kongress, 15.-18. September 2009 in Karlsruhe.


Biogas production from mono-digestion of maize silage – long-term process stability and requirements

Lebuhn, M.; Heuwinkel, H.; Gronauer, A. (2008)

Water Science & Technology 58 (8), S. 1645-1651.
DOI: 10.2166/wst.2008.495

mehr

Nitrogen release from plant-derived and industrially processed organic fertilizers used in organic horticulture

Stadler, C.; von Tucher, S.; Schmidhalter, U.; Gutser, R.; Heuwinkel, H. (2006)

Journal of Plant Nutrition and Soil Science 169 (4), S. 549-556.
DOI: 10.1002/jpln.200520579

mehr

The Legume Content in Multispecies Mixtures as Estimated with Near Infrared Reflectance Spectroscopy: Method Validation

Locher, F.; Heuwinkel, H.; Gutser, R.; Schmidhalter, U. (2005)

Agronomy Journal 97 (1), S. 18-25.
DOI: 10.2134/agronj2005.0018

mehr

Development of Near Infrared Reflectance Spectroscopy Calibrations to Estimate Legume Content of Multispecies Legume–Grass Mixtures

Locher, F.; Heuwinkel, H.; Gutser, R.; Schmidhalter, U. (2005)

Agronomy Journal 97 (1), S. 11-17.
DOI: 10.2134/agronj2005.0011

mehr

N2-fixation estimated by 15N natural abundance can be erroneous because of changes in 15N-discrimination during N-uptake

Heuwinkel, H.; Gutser, R.; Claassen, N.; Schmidhalter, U. (2001)

Plant Nutrition: Food security and sustainability of agro-ecosystems through basic and applied research, S. 654-655.
DOI: 10.1007/0-306-47624-X_317

 

Determining 15N discrimination(∈) during N2 fixation is a must for the use of 15N natural abundance (NA) to estimate N2 fixation, while ∈ during uptake of mineral N is neglected because of low supply of N the in the field. In the greenhouse a nutrient-solution experiment was run to measure ∈ during sole NO3 nutrition (8 mM) of white lupin (lupNO3), oat and flax. Additionally ∈ was determined for white lupin solely supplied with N2-N (lupN2). Effects of plant age and N distribution within the plant were investigated by sequential harvests and separating the plants into their parts. Besides of strong growth of all plants only lupin reached the reproductive stage. More than double the N acquired by lupNO3 and lupN2 was taken up by oat. Mean ∈P/S [∈ 15N ‰] increased from flax (−3.9) via lupNO3 (−3.1) and oat (−2.4) to lupN2 (−1.5). In oat and flax ∈ oscillated around its mean, no change in lupN2 and showed a steady increase in lupNO3. A close relationship between ∈ and the shoot share to total N gain was found for all treatments. Therefore, N demand from the shoot determined ∈. The impact of these findings for field use of NA is discussed.

mehr

Prof. Dr. Hauke Heuwinkel


Hochschule Weihenstephan-Triesdorf

Fakultät Nachhaltige Agrar- und Energiesysteme
Am Staudengarten 1
85354 Freising

T +49 8161 71-4331
hauke.heuwinkel[at]hswt.de