@article{BesraSenguptaRoyetal., author = {Besra, Laxmidhar and Sengupta, Dilip and Roy, S. and Ay, Peter}, title = {Polymer adsorption: its correlation with flocculation and dewatering of kaolin Suspension in the presence and absence of surfactant"}, language = {en} } @article{BesraSenguptaRoyetal., author = {Besra, Laxmidhar and Sengupta, Dilip and Roy, S. and Ay, Peter}, title = {Flocculation and dewatering of kaolin suspensions in the presence of polyacrylamide and surfactant}, language = {en} } @inproceedings{MissagiaGuerreroNarraetal., author = {Missagia, Bruna and Guerrero, Cinthya and Narra, Satyanarayana and Krautz, Hans Joachim and Ay, Peter}, title = {Physical characterization of Brazilian agricultural and forestry residues aiming the production of energy pellets}, language = {en} } @misc{MissagiaGuerreroNarraetal., author = {Missagia, Bruna and Guerrero, Cinthya and Narra, Satyanarayana and Sun, Yaoming and Ay, Peter and Krautz, Hans Joachim}, title = {Physicomechanical properties of rice husk pellets for energy generation}, language = {en} } @inproceedings{MarkowskiLogschAyetal., author = {Markowski, Jens and Logsch, Florian and Ay, Peter and Kanthak, Manfred and M{\"u}ller, Bodo}, title = {Recycling of non-ferrous metals, precious metals and rare earth metals from MSW}, series = {Proceedings, XXVII. IMPC, Santiago de Chile, 2014}, booktitle = {Proceedings, XXVII. IMPC, Santiago de Chile, 2014}, publisher = {GECAMIN}, address = {Santiago de Chile}, pages = {237 -- 245}, abstract = {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.}, language = {en} } @inproceedings{NarraBrinkerAy, author = {Narra, Satyanarayana and Brinker, Mona and Ay, Peter}, title = {Particle size distribution of communited and liberated cereal straws measured with different image analysis systems and their characteristic influence on mechanical pellets quality}, series = {XXVI International Mineral Processing Congress - IMPC 2012 : New Delhi, India, September 24 - 28, 2012}, booktitle = {XXVI International Mineral Processing Congress - IMPC 2012 : New Delhi, India, September 24 - 28, 2012}, publisher = {New Delhi}, isbn = {81-901714-3-7}, language = {en} } @inproceedings{NarraDasguptaAyetal., author = {Narra, Satyanarayana and Dasgupta, Sunanda and Ay, Peter and Zeng, T. and Weller, N.}, title = {Pelletisation of Rye- and Wheat straw with additives}, series = {19th European Biomass Conference and Exhibition, proceedings, ICC Berlin International Congress Center Berlin, Germany, conference 6 - 10 June 2011}, booktitle = {19th European Biomass Conference and Exhibition, proceedings, ICC Berlin International Congress Center Berlin, Germany, conference 6 - 10 June 2011}, publisher = {ETA-Florence Renewable Energies}, address = {Florence}, isbn = {978-88-89407-55-7}, language = {en} } @inproceedings{NarraGlaserAy, author = {Narra, Satyanarayana and Glaser, Claudia and Ay, Peter}, title = {Abrasion and strength of biomass pellets as main mechanical stability characteristics}, series = {19th European Biomass Conference and Exhibition, proceedings, ICC Berlin International Congress Center Berlin, Germany, conference 6 - 10 June 2011}, booktitle = {19th European Biomass Conference and Exhibition, proceedings, ICC Berlin International Congress Center Berlin, Germany, conference 6 - 10 June 2011}, publisher = {ETA-Florence Renewable Energies}, address = {Florence}, isbn = {978-88-89407-55-7}, language = {en} } @inproceedings{KarthikeyanAyNarra, author = {Karthikeyan, J. and Ay, Peter and Narra, Satyanarayana}, title = {Energy Production from Agricultural residues and Crop processing Wastes: Some Problems and Perspectives}, series = {International Conference on Green Power Generation: Vision 2020}, booktitle = {International Conference on Green Power Generation: Vision 2020}, doi = {10.13140/2.1.3330.8965}, pages = {9}, language = {en} } @inproceedings{NarraGlaserGusoviusetal., author = {Narra, Satyanarayana and Glaser, Claudia and Gusovius, Hans-J{\"o}rg and Ay, Peter}, title = {Comparison of grinding and liberation processes for stalky biomass materials as a prerequisite for production of energy pellets with high calorific value}, series = {XXV International Mineral Processing Congress, IMPC 2010, "Smarter processing for the future", Brisbane, Australia 6-10 September 2010, congress proceedings}, booktitle = {XXV International Mineral Processing Congress, IMPC 2010, "Smarter processing for the future", Brisbane, Australia 6-10 September 2010, congress proceedings}, publisher = {AusIMM}, address = {Carlton South, Australia}, isbn = {978-1-921522-28-4}, language = {en} } @inproceedings{NarraGlaserGusoviusetal., author = {Narra, Satyanarayana and Glaser, Claudia and Gusovius, Hans-J{\"o}rg and Ay, Peter}, title = {Pelletisation of cereal straws as a source of energy after specific communition processes}, series = {18th European Biomass Conference and Exhibition, proceedings of the international conference held in Lyon, France, 3 - 7 May 2010}, booktitle = {18th European Biomass Conference and Exhibition, proceedings of the international conference held in Lyon, France, 3 - 7 May 2010}, publisher = {ETA-Florence Renewable Energies}, address = {Florence}, isbn = {978-88-89407-56-5}, language = {en} } @inproceedings{JurischkaPedaNarraetal., author = {Jurischka, Constantin and Peda, S. and Narra, Satyanarayana and Smieszek, Marlene and Stollberg, Christian and Ay, Peter and Kay, M.}, title = {Innovative technologies for production of highly pure substances and bio fine chemicals from plants}, series = {18th European Biomass Conference and Exhibition, proceedings of the international conference held in Lyon, France, 3 - 7 May 2010}, booktitle = {18th European Biomass Conference and Exhibition, proceedings of the international conference held in Lyon, France, 3 - 7 May 2010}, publisher = {ETA-Florence Renewable Energies}, address = {Florence}, isbn = {978-88-89407-56-5}, language = {en} } @inproceedings{MarkowskiNarraAyetal., author = {Markowski, Jens and Narra, Satyanarayana and Ay, Peter and Pempel, Harry and M{\"u}ller, Mike}, title = {Automatic disassembly and recycling of lithium-traction-accumulators}, series = {Proceedings, XXVII. IMPC, Santiago de Chile, 2014}, booktitle = {Proceedings, XXVII. IMPC, Santiago de Chile, 2014}, publisher = {GECAMIN}, address = {Santiago de Chile}, pages = {227 -- 236}, abstract = {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.}, language = {en} } @inproceedings{MarkowskiNarraAyetal., author = {Markowski, Jens and Narra, Satyanarayana and Ay, Peter and Hein, Christian and Weber, Alfred}, title = {Production of agglomerates from iron-containing fines from the ASR-recycling processes for its use in blast furnaces}, series = {XXVI International Mineral Processing Congress - IMPC 2012 : New Delhi, India, September 24 - 28, 2012, vol. 1}, booktitle = {XXVI International Mineral Processing Congress - IMPC 2012 : New Delhi, India, September 24 - 28, 2012, vol. 1}, address = {New Delhi}, isbn = {81-901714-3-7}, abstract = {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.}, language = {en} } @misc{NarraTaoGlaseretal., author = {Narra, Satyanarayana and Tao, Yonggui and Glaser, Claudia and Gusovius, Hans-J{\"o}rg and Ay, Peter}, title = {Increasing the calorific value of Rye straw pellets with biogenous and fossil additives}, series = {Energy and Fuels}, volume = {24}, journal = {Energy and Fuels}, number = {9}, issn = {0887-0624}, pages = {5228 -- 5234}, language = {en} } @incollection{NarraAy, author = {Narra, Satyanarayana and Ay, Peter}, title = {Build-up granulation of lignin sludge's as innovative process improving its energy efficiency}, series = {Fuelling the future : advances in science \& technologies for every generation, transmission and storage}, booktitle = {Fuelling the future : advances in science \& technologies for every generation, transmission and storage}, editor = {Mendez-Vilas, A.}, publisher = {BrownWalker Press}, address = {Boca Faton, FL}, isbn = {978-1-61233-558-2}, pages = {9 -- 14}, language = {en} } @incollection{NarraGlaserGusoviusetal., author = {Narra, Satyanarayana and Glaser, Claudia and Gusovius, Hans-J{\"o}rg and Stollberg, Christian and Ay, Peter}, title = {Agricultural residues as a renewable source of bioenergy with special focus on cereal straws}, series = {Renewable resources and biotechnology for material applications}, booktitle = {Renewable resources and biotechnology for material applications}, editor = {Zaikov, Gennadij E. and Pudel, Frank and Spychalski, Grzegorz}, publisher = {Nova Publishers}, address = {Magdeburg}, isbn = {978-1-61209-521-9}, pages = {67 -- 79}, language = {en} } @inproceedings{NarraLogschAy, author = {Narra, Satyanarayana and Logsch, Florian and Ay, Peter}, title = {Filtration resistance of the acid treated technical lignin granules and suspensions}, series = {XXVII International Mineral Processing Congress, 20 - 24 October 2014, Chile, Santiago de Chile}, booktitle = {XXVII International Mineral Processing Congress, 20 - 24 October 2014, Chile, Santiago de Chile}, pages = {206 -- 213}, language = {en} } @inproceedings{NarraGeldtGlaseretal., author = {Narra, Satyanarayana and Geldt, Elena and Glaser, Claudia and Ay, Peter}, title = {Technical realization of the innovative roll-agglomeration of bast fibres in industrial scale}, series = {XXVII International Mineral Processing Congress, 20 - 24 October 2014, Chile, Santiago de Chile}, booktitle = {XXVII International Mineral Processing Congress, 20 - 24 October 2014, Chile, Santiago de Chile}, pages = {345 -- 355}, language = {en} } @misc{OyegbileAyNarra, author = {Oyegbile, Benjamin and Ay, Peter and Narra, Satyanarayana}, title = {Optimization of Physicochemical Process for Pre-treatment of Suspension by Flocculation Prior to Dewatering}, series = {Desalination and water treatment}, volume = {57}, journal = {Desalination and water treatment}, number = {6}, issn = {1944-3986}, doi = {10.1080/19443994.2015.1043591}, pages = {2726 -- 2736}, language = {en} } @inproceedings{NarraGruhnAy, author = {Narra, Satyanarayana and Gruhn, M. and Ay, Peter}, title = {Production of carbon fibres from technical lignin granules}, series = {21st European Biomass Conference and Exhibition, Copenhagen, Denmark, 3 - 7 June 2013}, booktitle = {21st European Biomass Conference and Exhibition, Copenhagen, Denmark, 3 - 7 June 2013}, publisher = {ETA-Florence Renewable Energies}, doi = {10.13140/RG.2.1.2139.0886}, language = {en} } @inproceedings{NarraAslanjanAy, author = {Narra, Satyanarayana and Aslanjan, Jana and Ay, Peter}, title = {Macroencapsulation of biogas residues increasing the fertilizer efficiency}, series = {21st European Biomass Conference and Exhibition, Copenhagen, Denmark, 3 - 7 June 2013}, booktitle = {21st European Biomass Conference and Exhibition, Copenhagen, Denmark, 3 - 7 June 2013}, publisher = {ETA-Florence Renewable Energies}, doi = {10.13140/RG.2.1.3187.6642}, language = {en} } @inproceedings{NarraLogschGlaseretal., author = {Narra, Satyanarayana and Logsch, Florian and Glaser, Claudia and Ay, Peter}, title = {Sludge-pelleting of paper and pulp residues}, series = {XXVI International Mineral Processing Congress - IMPC 2012, New Delhi, India, September 24 - 28, 2012}, booktitle = {XXVI International Mineral Processing Congress - IMPC 2012, New Delhi, India, September 24 - 28, 2012}, address = {New Dehli}, isbn = {81-901714-3-7}, pages = {03723 -- 03739}, language = {en} } @misc{AyPerwinGusoviusetal., author = {Ay, Peter and Perwin, J{\"o}rg and Gusovius, Hans-J{\"o}rg and Hildebrandt, Sven}, title = {Method and device for the continuous production of fiber agglomerate}, abstract = {The invention relates to a method and device for the continuous production of fiber agglomerates by rolling agglomeration. For the production of an agglomerate, a portion of the fiber material is introduced into a ring-shape roller table which closed on all sides except for an input opening an an output opening. The fiber material portion introduced into the roller table is transported through the roller table by means of a relative movement of two surfaces of the roller table toward each other, the surfaces lying opposite each other. The fiber material is compressed in the roller table and finally discharged from an output opening of the roller table as fiber agglomerate. According to the invitation, the portioning of the fiber material is carried out by the pulling of an amount of fibers out of a stock of corresponding fiber materials is provided on a supply table for each input opening of a roller table, and portions are continously pulled out of said stock by the repeated movement through the sock of carrier means of a pulling device designed therefor and released into the roller table.}, language = {en} } @inproceedings{GaydardzhievAy, author = {Gaydardzhiev, Stoyan and Ay, Peter}, title = {Implication of surface charge effects in colour removal from effluents by chemical coagulation in the case of CI Reactive Blue dye}, series = {Partec 2004, proceedings, N{\"u}rnberg, Germany 16 - 18 march 2004, International Congress for Particle Technology}, booktitle = {Partec 2004, proceedings, N{\"u}rnberg, Germany 16 - 18 march 2004, International Congress for Particle Technology}, editor = {Pratsinis, Sotiris E.}, publisher = {N{\"u}rnbergMesse-GmbH}, address = {N{\"u}rnberg}, language = {en} } @misc{WalaszekAy, author = {Walaszek, Wiktoria and Ay, Peter}, title = {Pelleting flocculation - an alternitive technique to optimise sludge conditioning}, series = {International journal of mineral processing}, volume = {76}, journal = {International journal of mineral processing}, number = {3}, pages = {173 -- 180}, language = {en} } @inproceedings{AyGaydardzhiev, author = {Ay, Peter and Gaydardzhiev, Stoyan}, title = {Surface charge studies - an important approach for investigation of color removal from textile waste water by chemical coagulation}, series = {International seminar on mineral proceesing technology (MPT-2004), 19 - 21 February 2004}, booktitle = {International seminar on mineral proceesing technology (MPT-2004), 19 - 21 February 2004}, publisher = {Allied Publishers}, address = {New Delhi [u.a.]}, isbn = {81-7764-599-4}, pages = {741 -- 748}, language = {en} } @inproceedings{HildebrandtAyGusoviusetal., author = {Hildebrandt, Sven and Ay, Peter and Gusovius, Hans-J{\"o}rg and Glaser, Claudia and Stollberg, Christian}, title = {Possibilities and working of the specific agglomeration of fibrous materials and residues}, series = {XXV International Mineral Processing Congress, IMPC 2010, Brisbane, Australia 6-10 September 2010}, booktitle = {XXV International Mineral Processing Congress, IMPC 2010, Brisbane, Australia 6-10 September 2010}, publisher = {AusIMM}, address = {Carlton South, Australia}, language = {en} } @misc{StollbergPedaSmieszeketal., author = {Stollberg, Christian and Peda, Stefan and Smieszek, Marlene and Gerath, H. and Jurischka, Constantin and Ay, Peter}, title = {New Downstream approaches for highly pure substances and bio fine chemicals from plant materials}, series = {Agricultural Engineering : Research papers}, volume = {43}, journal = {Agricultural Engineering : Research papers}, number = {3}, issn = {1392-1134}, pages = {58 -- 66}, language = {en} } @misc{BesraAy, author = {Besra, Laxmidhar and Ay, Peter}, title = {Flocculation and dewatering of kaolin suspensions with the help of a combination of polymeric flocculants and surface active substances}, series = {Forum der Forschung}, volume = {4}, journal = {Forum der Forschung}, number = {9}, issn = {0947-6989}, pages = {68 -- 74}, language = {en} } @misc{NagelAy, author = {Nagel, Manfred and Ay, Peter}, title = {Characterization of floc structure using cluster analysis}, series = {Particle and Particle Systems Characterization}, volume = {16}, journal = {Particle and Particle Systems Characterization}, number = {5}, issn = {1521-4117}, pages = {229 -- 237}, language = {en} } @misc{GaydardzhievAy, author = {Gaydardzhiev, Stoyan and Ay, Peter}, title = {Evaluation of dispersant efficiencfor aqueous alumina slurries by concurrent rechniques}, series = {Journal of Dispersion Science and Technology}, volume = {27}, journal = {Journal of Dispersion Science and Technology}, number = {3}, issn = {1532-2351}, pages = {413 -- 417}, language = {en} } @misc{WalaszekAy, author = {Walaszek, Wiktoria and Ay, Peter}, title = {Porosity and interior structure analysis of pellet flocs}, series = {Colloids and Surfaces A: Physicochemical and Engineering Aspects}, volume = {280}, journal = {Colloids and Surfaces A: Physicochemical and Engineering Aspects}, number = {1-3}, issn = {0927-7757}, pages = {155 -- 162}, language = {en} } @misc{WalaszekAy, author = {Walaszek, Wiktoria and Ay, Peter}, title = {Extended interpretation of structured attributes of pellet-flocs in pelleting flocculation}, series = {Minerals Engineering}, volume = {19}, journal = {Minerals Engineering}, number = {13}, issn = {0892-6875}, pages = {1397 -- 1400}, language = {en} } @misc{GaydardzhievAy, author = {Gaydardzhiev, Stoyan and Ay, Peter}, title = {Characterisation of aqueous suspensions of fumed aluminium oxide in presence of two Dolapix dispersants}, series = {Journal of Materials Science}, volume = {41}, journal = {Journal of Materials Science}, number = {16}, issn = {0022-2461}, pages = {5257 -- 5262}, language = {en} } @misc{KammSchneiderHuettletal., author = {Kamm, Birgit and Schneider, Bernd Uwe and H{\"u}ttl, Reinhard F. and Gr{\"u}newald, Holger and Gusovius, Hans-J{\"o}rg and Stollberg, Christian and Ay, Peter and Kamm, Michael}, title = {Lignocellulosic feedstock biorefinery - combination of technologies of agroforestry and a biobased substance an energy economy}, series = {Forum der Forschung}, journal = {Forum der Forschung}, number = {19}, issn = {0947-6989}, pages = {53 -- 62}, language = {en} } @misc{GaydardzhievGusoviusWilkeretal., author = {Gaydardzhiev, Stoyan and Gusovius, Hans-J{\"o}rg and Wilker, Viola and Ay, Peter}, title = {Gel-casted porous Al2O3 ceramics by use of natural fibres as pore developers}, series = {Journal of Porous Materials}, volume = {15}, journal = {Journal of Porous Materials}, number = {4}, issn = {1573-4854}, pages = {475 -- 480}, language = {en} } @inproceedings{NarraGlaserGusoviusetal., author = {Narra, Satyanarayana and Glaser, Claudia and Gusovius, Hans-J{\"o}rg and Stollberg, Christian and Ay, Peter}, title = {Agricultural residues as a renewable source of bio-Energy with special focus on cereal straws}, series = {Renewable resources and biotechnology for material applications, proceeding of the 16th International Conference for Renewable Resources and Plant Biotechnology (NAROSSA 2010), held in Magdeburg, Germany, June 7 - 8, 2010}, booktitle = {Renewable resources and biotechnology for material applications, proceeding of the 16th International Conference for Renewable Resources and Plant Biotechnology (NAROSSA 2010), held in Magdeburg, Germany, June 7 - 8, 2010}, editor = {Zaikov, Gennadij E.}, publisher = {Nova Science Publ.}, address = {New York}, isbn = {978-1-61209-521-9}, pages = {67 -- 80}, language = {en} } @inproceedings{NarraGoettlingAy, author = {Narra, Satyanarayana and G{\"o}ttling, Sandra and Ay, Peter}, title = {Agglomeration of Lignin slugde as a technological innovative conversion for producing energy}, series = {Extended abstracts, 1st International Conference on Materials for Energy, July 4 - 8, 2010, Convention Center Karlsruhe/Germany}, booktitle = {Extended abstracts, 1st International Conference on Materials for Energy, July 4 - 8, 2010, Convention Center Karlsruhe/Germany}, publisher = {DECHEMA}, address = {Frankfurt, M.}, isbn = {978-3-89746-117-8}, language = {en} } @inproceedings{KleinStollbergMarkowskietal., author = {Klein, Robert and Stollberg, Christian and Markowski, Jens and Willscher, S. and Ay, Peter}, title = {Recovery of metals from circuit boards with biodissolution}, series = {10th Conference on Environment and Mineral Processing, 22.6.-24.6.2006, VB-TU Ostrava, Czech Republic}, booktitle = {10th Conference on Environment and Mineral Processing, 22.6.-24.6.2006, VB-TU Ostrava, Czech Republic}, publisher = {Technical University of Ostrava}, address = {Ostrava}, language = {en} } @inproceedings{GaydardzhievAy, author = {Gaydardzhiev, Stoyan and Ay, Peter}, title = {Characterization of stability behaviour of ultra fine alumina powder in view its colloidal processing by gel-casting}, series = {Proceedings of the XXIII International Mineral Processing Congress, Istanbul, Turkey 3-8 September 2006, Vol. 1}, booktitle = {Proceedings of the XXIII International Mineral Processing Congress, Istanbul, Turkey 3-8 September 2006, Vol. 1}, editor = {{\"O}nal, G{\"u}ven}, publisher = {Promed Advertising Agency}, address = {Istanbul}, isbn = {975-7946-28-1}, pages = {464 -- 467}, language = {en} } @inproceedings{WalaszekAy, author = {Walaszek, Wiktoria and Ay, Peter}, title = {Pelleting flocculation as a tool to optimize slugde conditioning}, series = {Proceedings of the XXIII International Mineral Processing Congress,Istanbul, Turkey 3-8 September 2006, Vol. 2}, booktitle = {Proceedings of the XXIII International Mineral Processing Congress,Istanbul, Turkey 3-8 September 2006, Vol. 2}, editor = {{\"O}nal, G{\"u}ven}, publisher = {Promed Advertising Agency}, address = {Istanbul}, isbn = {975-7946-29-X}, pages = {1631 -- 1636}, language = {en} } @inproceedings{KleinStollbergMarkowskietal., author = {Klein, Robert and Stollberg, Christian and Markowski, Jens and Willscher, S. and Ay, Peter}, title = {Biodissolution for recovery of precious metals from electronic scrap}, series = {Proceedings of the XXIII International Mineral Processing Congress, Istanbul, Turkey 3-8 September 2006, Vol. 2}, booktitle = {Proceedings of the XXIII International Mineral Processing Congress, Istanbul, Turkey 3-8 September 2006, Vol. 2}, editor = {{\"O}nal, G{\"u}ven}, publisher = {Promed Advertising Agency}, address = {Istanbul}, isbn = {975-7946-29-X}, pages = {1557 -- 1560}, language = {en} } @inproceedings{GusoviusAySchmidetal., author = {Gusovius, Hans-J{\"o}rg and Ay, Peter and Schmid, Hubert and M{\"u}ssig, J{\"o}rg}, title = {New quantitative image analysis method for the characterization of mineral and fibrous materials}, series = {Proceedings of the XXIII International Mineral Processing Congress, Istanbul, Turkey 3-8 September 2006, Vol. 1}, booktitle = {Proceedings of the XXIII International Mineral Processing Congress, Istanbul, Turkey 3-8 September 2006, Vol. 1}, editor = {{\"O}nal, G{\"u}ven}, publisher = {Promed Advertising Agency}, address = {Istanbul}, isbn = {975-7946-28-1}, pages = {229 -- 234}, language = {en} } @misc{GaydardzhievKarthikeyanAy, author = {Gaydardzhiev, Stoyan and Karthikeyan, J. and Ay, Peter}, title = {Progression of surface charge and floc charakterization during colour removal from solution by coagulation}, series = {Environmental Technology}, volume = {27}, journal = {Environmental Technology}, number = {2}, issn = {1479-487X}, pages = {193 -- 199}, language = {en} } @misc{SinghGaydardzhievAy, author = {Singh, Bimal P. and Gaydardzhiev, Stoyan and Ay, Peter}, title = {Stabilization of aqueous silicon nitride suspension with Dolapix A 88}, series = {Journal of Dispersion Science and Technology}, volume = {27}, journal = {Journal of Dispersion Science and Technology}, number = {1}, issn = {1532-2351}, pages = {91 -- 97}, language = {en} } @inproceedings{NagelAy, author = {Nagel, Manfred and Ay, Peter}, title = {Three-dimensional Reconstruction of flocs growth history}, series = {Product engineering \& chemical engineering now, proceedings of 2nd European Congress of Chemical Engineering (ECCE 2), 5 - 7 October 1999, Monpellier, France}, booktitle = {Product engineering \& chemical engineering now, proceedings of 2nd European Congress of Chemical Engineering (ECCE 2), 5 - 7 October 1999, Monpellier, France}, publisher = {Technique et Documentation-Lavoisier}, address = {Cachan, France}, isbn = {2-910239-00-4}, pages = {361 -- 368}, language = {en} } @inproceedings{AyNagel, author = {Ay, Peter and Nagel, Manfred}, title = {A new concept for the process design of flocculation process}, series = {Proceedings of the XXI International Mineral Processing Congress, Rome, Italy, July 23 - 27, 2000}, booktitle = {Proceedings of the XXI International Mineral Processing Congress, Rome, Italy, July 23 - 27, 2000}, publisher = {Elsevier}, address = {Amsterdam [u.a.]}, language = {en} } @inproceedings{NagelAy, author = {Nagel, Manfred and Ay, Peter}, title = {Mathematical Desciption of the Morphological genesis of flocs, Cluster analysis of flocs}, series = {PARTEC 2001, International Congress for Particle Technology, N{\"u}rnberg, Germany, 27-29 March 2001}, booktitle = {PARTEC 2001, International Congress for Particle Technology, N{\"u}rnberg, Germany, 27-29 March 2001}, address = {N{\"u}rnberg}, language = {en} } @inproceedings{BaehrAy, author = {B{\"a}hr, Susanne and Ay, Peter}, title = {Pelleting flocculation in a rotary drum reactor}, series = {PARTEC 2001, International Congress for Particle Technology, Nuremberg, Germany, 27-29 March 2001}, booktitle = {PARTEC 2001, International Congress for Particle Technology, Nuremberg, Germany, 27-29 March 2001}, publisher = {N{\"u}rnberg}, language = {en} }