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Wieselburg, Austria

Sonnleitner A.,Bioenergy 2020+ GmbH | Rathbauer J.,BLT Wieselburg | Randriamalala J.R.,DERAD Diagnostic Environnemental et Recherches Appliquees pour le Developpement en Milieu Rural | Raoliarivelo L.I.B.,DERAD Diagnostic Environnemental et Recherches Appliquees pour le Developpement en Milieu Rural | And 3 more authors.
Energy for Sustainable Development | Year: 2013

Access to affordable and renewable sources of energy is crucial to reducing poverty and enhancing rural development in countries of the global South. Straight vegetable oil was recently identified as a possible alternative to conventional biomass for rural energy supply. In this context, the Jatropha curcas Linn. species has been extensively investigated with regard to its potential as a biofuel feedstock. In contrast, only little is known about Jatropha mahafalensis Jum. & H. Perrier, which is an indigenous and endemic representative of the Jatropha genus in Madagascar. This paper explores the potential and suitability of J. mahafalensis as a biofuel feedstock. Seed samples were collected in the area of Soalara in south-western Madagascar in February and September 2011. Two agro-ecological zones (coastal area and calcareous plateau) and two plant age groups (below and above 10. years) were considered. These four sample groups were analyzed with regard to oil properties, element contents, and fatty acid profiles. Measured values differed greatly between the two harvests, probably owing to different climatic or storage conditions. No direct relation between age of trees or location and oil quality could be established. The analyses indicate that J. mahafalensis oil can be used in oil lamps, cooking stoves and stationary combustion engines for electrification or for biodiesel production. However, modifications in storage and extraction methods, as well as further processing steps are necessary to enable its utilization as a straight vegetable oil and feedstock for biodiesel production. If these technical requirements can be met, and if it turns out that J. mahafalensis oil is economically competitive in comparison with firewood, charcoal, paraffin and petroleum, it can be considered as a promising feedstock for rural energy supply. © 2013 International Energy Initiative. Source


Horacek M.,BLT Wieselburg | Horacek M.,University of Innsbruck | Brandner R.,University of Vienna
Global and Planetary Change | Year: 2013

Algeo et al. (2013) accumulated a large dataset from the literature together with original data and interpreted them with respect to changes in organic fluxes from the Changhsingian to the Griesbachian. They detect a general increase in deposition of organic material from the Changhsingian to the Griesbachian with the exception of South China, where they identify a decrease in sedimentation of organic matter. They interpret the South China anomaly as a catastrophic decline in bioproductivity in response to the Late Permian Mass Extinction (LPME), whereas the noted general increase is explained by changed ambient environmental conditions (sedimentation rate, ocean oxygenation). We show i) that the dataset utilized by Algeo et al. (2013) contains numerous errors and ii) that the representativeness of some of the data is questionable, limiting the accuracy of the calculations and interpretations in the article. Additionally, we present an alternative interpretation of the data by proposing an exceptional situation in the Changhsingian in South China, seemingly more in agreement with the data than a catastrophic decline in the Griesbachian bioproductivity. © 2013 Elsevier B.V. Source


Biakov A.S.,Russian Academy of Sciences | Zakharov Y.,Russian Academy of Sciences | Horacek M.,BLT Wieselburg | Richoz S.,University of Graz | And 6 more authors.
Russian Geology and Geophysics | Year: 2016

We present new data on the structure and age of the upper Permian strata in the basin of the Setorym River (tributary of the Vostochnaya Khandyga River) in the South Verkhoyansk region, represented by the Imtachan Formation and the lower part of the Nekuchan Formation. Based on the new findings of bivalve fossils from the Intomodesma costatum Zone, as well as on the study of carbon isotopes in the shells and carbon isotopes of the organic matter of the host mudstones, we have for the first time proved the completeness of the Permian section. The detailed description of the contact between the Imtachan and Nekuchan Formations bears evidence for a certain continuity of the lithologic characteristics of the sandstones. The sharp lithologic contact between the formations reflects not a regional sedimentation hiatus but a shift of depositional settings from the upper parts of a delta to the deep shelf, caused by forced marine transgression. It is concluded that there was no long-term hiatus between the accumulation of the Imtachan and Nekuchan Formations. Images of the most characteristic species of bivalves and crinoids from the Imtachan Formation are presented. © 2015. Source


Mihaela P.,Sudan University of Science and Technology | Josef R.,BLT Wieselburg | Monica N.,Sudan University of Science and Technology | Rudolf Z.,BLT Wieselburg
Fuel | Year: 2013

Biodiesel is a non-polluting alternative fuel produced from renewable resources whose chemical and physical properties closely resemble those of the petroleum diesel fuel. Recently studies are being carried out for biodiesel production from less common or unconventional oilseeds. This paper highlights the perspectives of using safflower oil for the biodiesel industry to promote it as an alternative fuel. The safflower is widely grown in semi-arid and arid regions of the world. Advantages of cultivating safflower like drought resistance and salt tolerance were taken into account. The field experiments were placed in Romania, one of the South-Eastern Europe countries with a big agricultural potential. Some attributes of oils and the corresponding biodiesels from safflower, soybean and rapeseed have been investigated. The fatty acids profile of safflower analyzed via GC shows a high amount of linoleic acid of 69.65%. This results in better low temperature properties like pour point, cloud point and cold filter plugging point of the FAME. Oxidation stability parameter does not meet the limit imposed by EN14214 European Standard, usually being improved by additives. Based on the global results, safflower (Carthamus tinctorius) was identified as a promising species for biodiesel feedstock which can be exploited with success on degraded lands of the world. © 2013 Elsevier Ltd. All rights reserved. Source


Rathbauer J.,BLT Wieselburg | Sonnleitner A.,Bioenergy 2020+ GmbH | Pirot R.,UR SCA | Zeller R.,BLT Wieselburg | Bacovsky D.,Bioenergy 2020+ GmbH
Biomass and Bioenergy | Year: 2012

This publication deals with the characterisation of Jatropha curcas seeds and the oil obtained hereof. The analyzed seeds have been harvested from hedges and plantations in the regions of Teriya Bugu and Bla in Mali in the years 2009 and 2010. The oil is obtained through solvent extraction. Parameters analyzed are those which are relevant for processing of the oil into fatty acid methyl ester (FAME, biodiesel), and include acid value, fatty acid profile and contents of S, P, K, Na, Ca and Mg. All oil samples are suitable for processing into biodiesel, but some of them require pre-treatment because of high contents of free fatty acids and phosphorous. The margin of deviation of acid value and element contents throughout the oil samples depends on the way of cultivation, harvest and storage of the Jatropha curcas plants and seeds. Despite high acid values, all oil samples show high oxidation stability. © 2012 Elsevier Ltd. Source

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