TY - JOUR A1 - Besra, Laxmidhar A1 - Sengupta, Dilip A1 - Roy, S. A1 - Ay, Peter T1 - Polymer adsorption: its correlation with flocculation and dewatering of kaolin Suspension in the presence and absence of surfactant" KW - Flocculation KW - Dewatering KW - Polymer KW - Surfactant Y1 - 2002 ER - TY - JOUR A1 - Besra, Laxmidhar A1 - Sengupta, Dilip A1 - Roy, S. A1 - Ay, Peter T1 - Flocculation and dewatering of kaolin suspensions in the presence of polyacrylamide and surfactant KW - Flocculation KW - Dewatering KW - Polymer KW - Surfactant Y1 - 2002 ER - TY - GEN A1 - Ay, Peter A1 - Kenn, Barbara A1 - Alter, Marcus Daniel T1 - Strukturierte Filterelemente als Trägermaterial für Mikroorganismen in der Wasseraufbereitung am Beispiel der Denitrifikation von belastetem Grund- und Trinkwasser T2 - Forum der Forschung KW - Denitrifikation KW - Wasseraufbereitung Y1 - 2002 SN - 0947-6989 VL - 8 IS - 15 SP - 76 EP - 81 ER - TY - JOUR A1 - Nagel, Manfred A1 - Ay, Peter T1 - Dreidimensionale morphologische Untersuchung von Flocken JF - GIT Laborfachzeitschrift Y1 - 2001 SN - 0016-3538 VL - 45 IS - 6 SP - 656 EP - 658 ER - TY - GEN A1 - Missagia, Bruna A1 - Ferreira Silva Correa, Mauricio A1 - Krautz, Hans Joachim A1 - Ay, Peter A1 - Schluchter, Wolfgang T1 - Agricultural and forestry residues as an alternative energy source for Brazil - the production of biomass pellets Y1 - 2009 ER - TY - CHAP A1 - Missagia, Bruna A1 - Guerrero, Cinthya A1 - Narra, Satyanarayana A1 - Krautz, Hans Joachim A1 - Ay, Peter T1 - Physical characterization of Brazilian agricultural and forestry residues aiming the production of energy pellets Y1 - 2010 ER - TY - GEN A1 - Missagia, Bruna A1 - Guerrero, Cinthya A1 - Narra, Satyanarayana A1 - Sun, Yaoming A1 - Ay, Peter A1 - Krautz, Hans Joachim T1 - Physicomechanical properties of rice husk pellets for energy generation Y1 - 2011 ER - 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 - 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 - Markowski, Jens A1 - Logsch, Florian A1 - Ay, Peter A1 - Kanthak, Manfred A1 - Müller, Bodo T1 - Recycling of non-ferrous metals, precious metals and rare earth metals from MSW T2 - Proceedings, XXVII. IMPC, Santiago de Chile, 2014 N2 - Presently the global commodity situation for non ferrous-, precious- and rare metals is characterized by a strong increase in onsumption and a simultaneous shortage of materials derived from primary sources. So the use of secondary raw materials gains is important due to economic and ecological reasons. Non Ferrous-, precious- and rare earth metals were detected in household waste (Municipal solid waste, MSW) for years. In MSW-treatments plants NF-metals are actually mostly separated from dried fractions. The separation of these metals is carried out with the aim of removing particles which disrupt further processing. A selective enrichment of individual non-ferrous metals has not been carried out previously. The separated fractions contain mixtures of Al, Cu, Zn, Pb, Sn, alloys, precious metals (e. g. Au, Ag, Pt) and rare metals (Ga, In, Nd etc.) along with considerable amounts of contaminations. The R&D project “NE-Rec” selectively processes the coarsely separated non-ferrous-metal-conglomerates increasing the concentration of targeted metals. Metals and metal mixtures are concentrated by sorting steps and the impurities are discharged from the process. Still contaminated precious metals are then subjected to a wet-chemical treatment. So metals can be specifically brought into solution or can be precipitated to separate unwanted components (inerts, polymers, foreign metals). Further the relevant metals will be concentrated by thermal-metallurgical processes. The technology, developed in the R&D project, enables identification, separation and processing of non-ferrous metals, precious metals and REM in household waste and transfers them into further processable individual fractions. KW - Recycling KW - NF metals Y1 - 2014 SP - 237 EP - 245 PB - GECAMIN CY - Santiago de Chile 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 - Narra, Satyanarayana A1 - Dasgupta, Sunanda A1 - Ay, Peter A1 - Zeng, T. A1 - Weller, N. T1 - Pelletisation of Rye- and Wheat straw with additives T2 - 19th European Biomass Conference and Exhibition, proceedings, ICC Berlin International Congress Center Berlin, Germany, conference 6 - 10 June 2011 Y1 - 2011 SN - 978-88-89407-55-7 PB - ETA-Florence Renewable Energies CY - Florence ER - TY - CHAP A1 - Narra, Satyanarayana A1 - Glaser, Claudia A1 - Ay, Peter T1 - Abrasion and strength of biomass pellets as main mechanical stability characteristics T2 - 19th European Biomass Conference and Exhibition, proceedings, ICC Berlin International Congress Center Berlin, Germany, conference 6 - 10 June 2011 Y1 - 2011 SN - 978-88-89407-55-7 PB - ETA-Florence Renewable Energies CY - Florence ER - TY - CHAP A1 - Karthikeyan, J. A1 - Ay, Peter A1 - Narra, Satyanarayana T1 - Energy Production from Agricultural residues and Crop processing Wastes: Some Problems and Perspectives T2 - International Conference on Green Power Generation: Vision 2020 Y1 - 2010 U6 - https://doi.org/10.13140/2.1.3330.8965 ER - TY - CHAP A1 - Narra, Satyanarayana A1 - Glaser, Claudia A1 - Gusovius, Hans-Jörg A1 - Ay, Peter T1 - Comparison of grinding and liberation processes for stalky biomass materials as a prerequisite for production of energy pellets with high calorific value T2 - XXV International Mineral Processing Congress, IMPC 2010, "Smarter processing for the future", Brisbane, Australia 6-10 September 2010, congress proceedings Y1 - 2010 SN - 978-1-921522-28-4 PB - AusIMM CY - Carlton South, Australia ER - TY - CHAP A1 - Narra, Satyanarayana A1 - Glaser, Claudia A1 - Gusovius, Hans-Jörg A1 - Ay, Peter T1 - Pelletisation of cereal straws as a source of energy after specific communition processes T2 - 18th European Biomass Conference and Exhibition, proceedings of the international conference held in Lyon, France, 3 - 7 May 2010 Y1 - 2010 SN - 978-88-89407-56-5 PB - ETA-Florence Renewable Energies CY - Florence ER - TY - CHAP A1 - Jurischka, Constantin A1 - Peda, S. A1 - Narra, Satyanarayana A1 - Smieszek, Marlene A1 - Stollberg, Christian A1 - Ay, Peter A1 - Kay, M. T1 - Innovative technologies for production of highly pure substances and bio fine chemicals from plants T2 - 18th European Biomass Conference and Exhibition, proceedings of the international conference held in Lyon, France, 3 - 7 May 2010 Y1 - 2010 SN - 978-88-89407-56-5 PB - ETA-Florence Renewable Energies CY - Florence ER - TY - CHAP A1 - Markowski, Jens A1 - Narra, Satyanarayana A1 - Ay, Peter A1 - Pempel, Harry A1 - Müller, Mike T1 - Automatic disassembly and recycling of lithium-traction-accumulators T2 - Proceedings, XXVII. IMPC, Santiago de Chile, 2014 N2 - Within the next few years major changes in mobility are expected. Increasing numbers of electric powered cars, electrobikes and E-Scooters define the transport sector. Recently lithium based traction batteries as storage medium have led into matrurity of series production combining high electrical efficiencies with low weights and compact dimensions. Due to the relatively young development with lithium batteries utilization, only few investigation were conducted regarding their recycling. Conventional battery recycling processes can not be applied due to differences in design and chemistry. So an automated disassembly and processing procedure for lithium traction batteries has been developed in the R/D-project "Li-WERT". Instead of complete smelting of the batteries without pretreatment, an automated disassembly and specific treatment of the material streams was realised, adjusted to the needs of the subsequent recovery technologies. A higher quality, with reduced expenses for the separation of fine-grained or fused material mixes, can be obtained for the individual components. The automated disassembly using an industrial robot significantly reduces dangers for the operating crew. The selective disassembly and beneficiation allows full recovery of the fractions. The batteries will be disassembled to cell level by the industrial robot. Anodes, cathodes, and separation layers are isolated and processed. The technology is designed, that no waste is generated for disposal. The pelletised cathode coating and the other separated metals (stainless steel, copper, aluminum) can be used in respective metallurgical plants. Circuit boards and plug contacts are also coveted secondary raw materials for reuse. The process is modular and offers high flexibility, e. g. for new battery types/ sizes by quick adjustment of the robot and tool change. Adaptation to other cathode materials (e. g. Li[FePO]) is possible. After finishing the R/D-project, a pilot plant for demontage was realised in 2013. KW - lithium traction accumulator KW - dismantling KW - recycling Y1 - 2014 SP - 227 EP - 236 PB - GECAMIN CY - Santiago de Chile 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 -