TY - PAT A1 - Narra, Satyanarayana A1 - Ay, Peter A1 - Glaser, Claudia T1 - Vorrichtung und Verfahren zur Agglomeration der Ablauge eines Cellulosegewinnungsprozesses Y1 - 2013 ER - TY - CHAP A1 - Narra, Satyanarayana A1 - Logsch, Florian A1 - Glaser, Claudia A1 - Ay, Peter ED - Thrän, Daniela ED - Pfeiffer, Diana T1 - Erzeugung von Bioagglomeraten auf der Basis ligninhaltiger Ablaugen der Papier- und Zellstoffindustrie T2 - Effizient, umweltverträglich, dezentral - neue Konzepte für die Nutzung von biogenen Festbrennstoffen, Bd. 2 Y1 - 2013 SP - 247 EP - 264 PB - DBFZ, Dt. Biomasseforschungszentrum CY - Leipzig ER - TY - CHAP A1 - Narra, Satyanarayana A1 - Gruhn, M. A1 - Ay, Peter T1 - Production of carbon fibres from technical lignin granules T2 - 21st European Biomass Conference and Exhibition, Copenhagen, Denmark, 3 - 7 June 2013 Y1 - 2013 U6 - https://doi.org/10.13140/RG.2.1.2139.0886 PB - ETA-Florence Renewable Energies ER - TY - CHAP A1 - Narra, Satyanarayana A1 - Aslanjan, Jana A1 - Ay, Peter T1 - Macroencapsulation of biogas residues increasing the fertilizer efficiency T2 - 21st European Biomass Conference and Exhibition, Copenhagen, Denmark, 3 - 7 June 2013 Y1 - 2013 U6 - https://doi.org/10.13140/RG.2.1.3187.6642 PB - ETA-Florence Renewable Energies ER - TY - PAT A1 - Narra, Satyanarayana A1 - Glaser, Claudia A1 - Ay, Peter A1 - Logsch, Florian T1 - Verfahren zur Herstellung von wasserunlöslichen Lignin-Agglomeraten N2 - Die Erfindung betrifft ein Verfahren zur Herstellung von wasserunlöslichen Agglomeraten aus Ablauge eines Cellulosegewinnungsprozesses. Erfindungsgemäß umfasst das Verfahren die folgenden Schritte: 1. Durchführung einer Granulation mit der Ablauge zur Erzeugung von Lignin-Agglomeraten und 2. Behandeln der erzeugten Lignin-Agglomerate mit einer Säure. KW - Sprühgranulation Lignin-Agglomerate, Agglomeration von Ligninen Y1 - 2013 ER - TY - PAT A1 - Ay, Peter A1 - Narra, Satyanarayana A1 - Glaser, Claudia T1 - System zur Rollagglomeration mit integrierter Entwässerung KW - Rollagglomeration Y1 - 2013 ER - TY - GEN A1 - Dasgupta, Sunanda A1 - Ay, Peter A1 - Kommolk, Ralf A1 - Su, Xu T1 - Kinetics of Melt Crystallization of a Sunflower Oil-Based Polyunsaturated Fatty Acid Mixture T2 - Chemical Engineering & Technology N2 - Important parameters like supercooling and cooling rates affecting the melt crys- tallization of a polyunsaturated fatty acid (PUFA) mixture obtained from sun- flower oil were investigated and compared via high-resolution polarized-light mi- croscopy. PUFA was thermally characterized in a differential scanning calorimeter and the significant liquid-solid-phase transition temperatures determined were then implemented in the development of specific temperature profiles. Analyzed between two glass slides, induction times were found to decrease with low crystal- lization temperatures and the number of nuclei per unit area increased with high- er supercooling and cooling rates. A comparison between the linear crystal growth rates of pure standards of each of the main fatty acids present in the PUFA mixture and the PUFA mixture itself indicated that the latter is much slower than that of each of its pure components. KW - Differential scanning calorimetry; Fatty acids; Melt crystallization Y1 - 2013 UR - http://onlinelibrary.wiley.com/doi/10.1002/ceat.201200524/abstract U6 - https://doi.org/10.1002/ceat.201200524 SN - 0930-7516 SN - 1521-4125 VL - 36 IS - 7 SP - 1225 EP - 1230 ER - TY - CHAP A1 - Dasgupta, Sunanda A1 - Ay, Peter T1 - In-situ monitoring and induction time measurements during melt crystallization of plant based fatty acid mixtures in V-form reactor T2 - 6th Workshop on Fats and Oils as Renewable Feedstock for the Chemical Industry Karlsruhe, March 17–19, 2013 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. KW - FBRM, PUFA Y1 - 2013 UR - https://www.researchgate.net/publication/265109649_In-situ_monitoring_and_induction_time_measurements_during_melt_crystallization_of_plant_based_fatty_acid_mixtures_in_V-form_reactor PB - abiosus e.V. Conferences CY - Karlsruhe, Germany ER -