ISSN:0009-286X    

DOI:10.1002/cite.330710602

出版商:WILEY‐VCH Verlag    

年代:1999

数据来源: WILEY

摘要:

AbstractModeling and Efficient Computational Simulation of Simulated Moving Bed Chromatographic Separation Processes.Chromatographic separation processes provide a powerful tool for the separation of mixtures in which the components have different adsorption affinities, especially when high purities are required. In this area, simulated moving bed (SMB) technology is becoming an important technique for large‐scale continuous chromatographic separation processes since it provides the advantages of a continuous countercurrent operation while avoiding the technical problem of a true moving bed. Because of the complex dynamics of the process, the choice of the optimal operation parameters and the control of the process in order to keep the product specifications at any time is not straightforward. For this challenging task, a reliable dynamic model of the process is necessary which is accurate enough as well as efficient enough in order to permit its online use for model based control. The purpose of this contribution is to review the state of the art in dynamic modeling of SMB chromatographic separation processes, highlighting new trends and results in the design of computationally effective simulation models suitable for online application

ISSN:0009-286X    

DOI:10.1002/cite.330710603

出版商:WILEY‐VCH Verlag    

年代:1999

数据来源: WILEY

摘要:

AbstractBiological Degradation of Chlorinated Hydrocarbons.Chlorinated hydrocarbons (CHC) have been produced on an industrial scale since the 1920's and 1930's and are frequently used as solvents, extractants, and disinfectants. Because their low biodegradability they are often enriched in the food chains of animals, resulting in high mortality. It is therefore necessary to prevent the discharge of CHC's into water, air, and soil. They are often not biodegraded in municipal or industrial activated sludge plants or in trickling filters. Until harmless substitutes become widely available, CHC's will continue to pose a threat and must be eliminated from all effluents before entering wastewater treatment plants. Information about specific conditions for anaerobic and aerobic biodegradation of selected CHC's is given below. Two topics will be discussed in greater detail: the kinetics of dechlorination and mineralization and some examples of the reaction engineering process in lab and pilot scale.

ISSN:0009-286X    

DOI:10.1002/cite.330710604

出版商:WILEY‐VCH Verlag    

年代:1999

数据来源: WILEY

摘要:

AbstractZum Andenken an Professor HARALD Voß. Sein Enthusiasmus, seine Kreativität und seine Unterstützung wird seinen Kollegen und Studenten fehlen und stets in Erinnerung bleib

ISSN:0009-286X    

DOI:10.1002/cite.330710605

出版商:WILEY‐VCH Verlag    

年代:1999

数据来源: WILEY

ISSN:0009-286X    

DOI:10.1002/cite.330710606

出版商:WILEY‐VCH Verlag    

年代:1999

数据来源: WILEY

ISSN:0009-286X    

DOI:10.1002/cite.330710607

出版商:WILEY‐VCH Verlag    

年代:1999

数据来源: WILEY

ISSN:0009-286X    

DOI:10.1002/cite.330710608

出版商:WILEY‐VCH Verlag    

年代:1999

数据来源: WILEY

ISSN:0009-286X    

DOI:10.1002/cite.330710609

出版商:WILEY‐VCH Verlag    

年代:1999

数据来源: WILEY

ISSN:0009-286X    

DOI:10.1002/cite.330710610

出版商:WILEY‐VCH Verlag    

年代:1999

数据来源: WILEY

ISSN:0009-286X    

DOI:10.1002/cite.330710611

出版商:WILEY‐VCH Verlag    

年代:1999

数据来源: WILEY