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51	Modeling of sulfate reduction in an entrained-flow black liquor gasifier Jivakanun, Narongsak 24 September 1993 (has links) Black liquor gasification is one of the promising alternatives to eliminate the drawbacks of the conventional recovery unit of the kraft process. A numerical model has been developed to simulate an industrial pilot scale entrained-flow gasifier currently operating at Tampere, Finland. The objective of the model is to investigate the effect of the key operating parameters on the efficiency of sulfate reduction during black liquor gasification. The results of the sensitivity analysis indicates that reduction is dependent of the ratio of the amount of carbon in black liquor to the amount of air being fed into the system, the reactor temperature and the initial particle size. Decreasing the air ratio can improve the efficiency of reduction. The rates of both reduction and carbon gasification increase with increasing in temperature. Higher reduction can be obtained by increasing the initial particle size. However, the values of those parameters need to be optimized based on the desired degree of sulfate reduction and the completion of carbon conversion. Economic considerations such as the length of the gasifier needed to achieve both high reduction efficiency and carbon conversion also need to be considered when selecting operating conditions. / Graduation date: 1994 Sulphate waste liquor -- Recycling
52	Recovered-resource dependent industries and the strategic renewal of incumbent firms a multi-level study of recovered-resource dependence management and strategic renewal in the European paper and board industry / Leeuwen, Erik Pieter van. January 2007 (has links) Proefschrift Erasmus Universiteit Rotterdam. / Lit. opg.: p. 3218260. - Met een samenvatting in het Nederlands. Ook beschikbaar als Online Resource.
53	Entwicklung und Inbetriebnahme von Spurenanalytik zur Qualitätsbestimmung von Gärungskohlendioxid im Hinblick auf die Optimierung bestehender Rückgewinnungsanlagen Härtl, Maximilian. Unknown Date (has links) (PDF) München, Techn. Universiẗat, Diss., 2007.
54	Design and control of recycle systems by nonlinear analysis Kiss, Anton Alexandru, January 2004 (has links) Proefschrift Universiteit van Amsterdam. / Met bibliobr., lit. opg. - Met samenvatting in het Nederlands en Roemeens.
55	Thermodynamische Modellierung der Rückgewinnung von Gärungs-CO2 und Kostenreduzierung des Prozesses durch Einsatz des Kältemittels CO2 Grosser, Angelika. Unknown Date (has links) (PDF) München, Techn. Universiẗat, Diss., 2006.
56	Das Recycling in der Handels- und Steuerbilanz zur Bilanzierung von Rückständen und Sekundärrohstoffen im Jahresabschluss Presser, Daniela January 2007 (has links) Zugl.: Frankfurt (Oder), Europa-Univ., Diss., 2007
57	Local government recycling : a South Australian perspective / Collins, Gill. January 1989 (has links) (PDF) Thesis (M. Env. St.)--University of Adelaide, Graduate Centre for Environmental Studies, 1991. / Includes bibliographical references (leaves 60-65). Recycling (Waste, etc.)
58	Die abfallwirtschaftsrechtliche Zielhierarchie nach dem neuen Kreislaufwirtschafts- und Abfallgesetz / Schimanek, Peter. January 1997 (has links) (PDF) Univ., Diss.--Gießen, 1996.
59	Phosphorrückgewinnung bei der Abwasserreinigung : Entwicklung eines Verfahrens zur Integration in kommunale Kläranlagen / Montag, David Markus. January 2008 (has links) Zugl.: Aachen, Techn. Hochsch., Diss., 2008 (Nicht für den Austausch). Abwasserreinigung. Phosphate. Recycling.
60	Autonomous Solid Waste Separation System Design/ Pekdur, Ömer. Keçeci, Emin Faruk January 2006 (has links) (PDF) Thesis (Master)--İzmir Institute of Technology, İzmir, 2006. / Keywords: Recycling, solid wastes, separation, domestic refuse, system design. Includes bibliographical references (leaves. 72-73). Recycling (Waste, etc.)

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