TY - PAT A1 - Narra, Satyanarayana A1 - Ay, Peter T1 - Verfahren zur Herstellung von säurebeständigen Biopolymer-Lignin-Membranen Y1 - 2012 ER - TY - PAT A1 - Narra, Satyanarayana A1 - Ay, Peter A1 - Glaser, Claudia A1 - Logsch, Florian T1 - Verfahren zur Herstellung von wasserunlöslichen Lignin-Agglomeraten Y1 - 2012 ER - TY - CHAP A1 - Narra, Satyanarayana A1 - Brinker, Mona A1 - Ay, Peter T1 - Particle size distribution of communited and liberated cereal straws measured with different image analysis systems and their characteristic influence on mechanical pellets quality T2 - XXVI International Mineral Processing Congress - IMPC 2012 : New Delhi, India, September 24 - 28, 2012 Y1 - 2012 SN - 81-901714-3-7 PB - New Delhi ER - TY - CHAP A1 - Markowski, Jens A1 - Ay, Peter A1 - Pempel, Harry A1 - Müller, Mike T1 - Entwicklung eines innovativen Verfahrens zur automatisierten Demontage und Auf-bereitung von Lithium-Ionen-Batterien aus Fahrzeugen T2 - Recycling und Rohstoffe : Band 5 N2 - Die automobile Antriebstechnik steht in den nächsten Jahrzehnten vor tief greifenden Verän-derungen. Nachdem über 125 Jahre der Verbrennungsmotor die vorherrschende Antriebsart darstellte, basieren neue Entwicklungen auf Elektroantrieben oder auf der Kombination ver-schiedener Antriebsformen. Fahrzeuge mit elektrischen Antrieben haben mittlerweile den Status der Serienreife erreicht und werden perspektivisch zunehmend das Straßenbild be-stimmen. Mit der so genannten Lithium-Ionen-Traktionsbatterie wurde in den letzten Jahren ein Spei-chermedium zur Serienreife geführt, welches einen hohen elektrischen Wirkungsgrad mit kompakten Maßen und geringem Eigengewicht vereinigt. Mit den auf der Nutzung von Li-thium-Akkumulatoren basierenden Antriebskonzepten kann ein entscheidender Schritt zur Umsetzung einer umfassenden Verbreitung der elektrischen Antriebstechnik im Bereich der individuellen Mobilität erfolgen. KW - Lithium-Akkumulator KW - Demontage KW - robotergestützt Y1 - 2012 SN - 978-3-935317-82-5 SP - 443 EP - 456 PB - TK Verlag Karl Thomé-Kozmiensky CY - Neuruppin ET - 1. Auflage ER - TY - CHAP A1 - Markowski, Jens A1 - Narra, Satyanarayana A1 - Ay, Peter A1 - Hein, Christian A1 - Weber, Alfred T1 - Production of agglomerates from iron-containing fines from the ASR-recycling processes for its use in blast furnaces T2 - XXVI International Mineral Processing Congress - IMPC 2012 : New Delhi, India, September 24 - 28, 2012, vol. 1 N2 - The EU Directive 2000/53/EC on end-of life vehicles (ELVs) states that in 2015 at least 85 wt.-% of a vehicle has to be reused or recycled. This result in the obligatory need to separate additionally metallic and other components of the automotive shredder residues (ASR), so that they can be professionally prepared for recycling and reuse further. Currently the iron-containing fines of ASR are deposited as it is not possible to process in blast furnaces due to its particle size (< 4 mm), composition and material properties. Additionally problems are also caused in handling and transportation (dust) of the material. This work focuses mainly on the ASR materials utilization in blast furnaces. Material was further separated into two consecutive fractions by carrying out repeated crushing and magnetic separation twice. The two fractions have significantly higher iron content (up to 75 wt.-%) compared to the initial material mixture. The materials were assessed for their usage in blast furnaces based on the possible pelletisation with and without binders, stability of pellets, shape and size of pellets, etc. Pelletisation of the material was carried out with a single mould pellet press. Further lignite coal was added to the mixture as additive which improved the pelletisation behavior and the mechanical stability of pellets. Lignite coal was chosen as reducing agent in the blast furnace process contributing towards additional savings in energy supplied. The experiments reveal that the production of pellets from iron-containing fines is possible with a lignite coal admixture of about 15 wt.-%. These pellets displayed good mechanical stability and can be used in blast furnace processes in recovery of the recyclable metals which are currently not recycled. The recycling of not yet recyclable metals would reduce the deposition and can be easily adopted into the economic cycle by their utilization. KW - Automotive shredder residue KW - Fe-fines KW - Agglomeration Y1 - 2012 SN - 81-901714-3-7 CY - New Delhi ER - TY - CHAP A1 - Narra, Satyanarayana A1 - Ay, Peter ED - Mendez-Vilas, A. T1 - Build-up granulation of lignin sludge’s as innovative process improving its energy efficiency T2 - Fuelling the future : advances in science & technologies for every generation, transmission and storage Y1 - 2012 SN - 978-1-61233-558-2 SP - 9 EP - 14 PB - BrownWalker Press CY - Boca Faton, FL ER - TY - CHAP A1 - Narra, Satyanarayana A1 - Logsch, Florian A1 - Glaser, Claudia A1 - Ay, Peter T1 - Sludge-pelleting of paper and pulp residues T2 - XXVI International Mineral Processing Congress - IMPC 2012, New Delhi, India, September 24 - 28, 2012 Y1 - 2012 SN - 81-901714-3-7 SP - 03723 EP - 03739 CY - New Dehli ER - TY - CHAP A1 - Dasgupta, Sunanda A1 - Ay, Peter T1 - Enrichment of unsaturated fractions in a Linseed oil based fatty acid mixture by melt crystallisation T2 - 5th Workshop on Fats and Oils as Renewable Feedstock for the Chemical Industry, Karlsruhe, Germany N2 - Enriched plant based unsaturated fatty acid mixtures are increasingly finding applications in various fields like those of production of bio-fuels and polymerization of epoxy resins. In the case of production of epoxy resins, they are highly advantageous due to the presence of multiple double bonds in the fatty acids which provide opportunities for cross linking by substitution. On the other hand, bio-fuels need raw materials with very low crystallization temperatures. This special property can also be attributed to these enriched unsaturated fractions due to their weak inter-molecular interactions owing to the kink in their structures. Melt crystallization has long been established as an optimal method for purification and enrichment of fractions from mixtures [1,2]. Previous studies have shown promising results with regard to enrichment of unsaturated fractions by melt crystallization processes [1]. Melt crystallization kinetics of two plant based poly-unsaturated fatty acid mixtures have been investigated in this study [3]. A high oleic and a high linoleic fatty acid mixture were chosen for comparison purposes. A V-form reactor was developed for optimal in-situ analysis with the help of the focused beam reflectance measurement (FBRM®, Mettler Toledo Ltd., Switzerland) instrument [3]. Enhanced heat transfer especially to deal with the heat given out during crystallization was enabled through minimal volume of sample, optimized mixing and the special shape of the reactor. Important parameters like induction time, mixing speed, etc have been determined and compared as functions of degree of supercooling and composition of PUFA mixtures. In accordance to theory, the induction times in both the cases decreased with increasing supercooling and mixer speed. On the other hand, the high linoleic fatty acid mixture required much higher supercooling (4.4K to 5.4K) than the high oleic mixture (2.2K to 3.2K) for favorable induction times. References [1] S. Dasgupta, N. Dreiack, P. Ay, presented at the 5th Workshop on Fats and Oils as Renewable Feedstock for the Chemical Industry (Eds: J.O. Metzger, M.A.R. Meier), Karlsruhe 2012 [2] G.F. Arkenbout, Melt Crystallization Technology, Technomic Publishing Company Inc., Pennsylvania 1995 [3] S. Xu, Master thesis, Chair of Mineral Processing, Processing of Biogenous Resources, Brandenburg University of Technology, Cottbus 2010 KW - Linseed oil, melt crystallization, unsaturated fatty acids, differential scanning caloriemetry Y1 - 2012 UR - http://conferences.abiosus.org/abstract/show/391 SP - S. 93 ER -