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The Neural Network Model for backflushing in Enzymatic Membrane Reactor

Chinese Journal of Chemical Engineering 2005年第6期13卷 809-815页

作者：何志敏董春华齐崴 Chemical Engineering Research Center School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China

In the enzymatic membrane reactor for separating casein hydrolysate, backflushing technology has been used to decrease the fouling of the membrane. Predication of the backflushing efficiency poses a complex non-linear problem as the system integrates enzymatic hydrolysis, membrane separation and periodic backflushing together. In this paper an alternative artificial neural network approach is developed to predict the backflushing efficiency as a function of duration and interval. A contour plot of backflushing performance is presented to model these effects, and the backflushing conditions have been optimized as duration of 10 s and interval of 10 min using this neural network. Also, simple neural networks are established to predict the time evolution of flux before and after backflushing. The results predicted by the models are in good agreement with the experimental data, and the average deviations for all the cases are well within ±5%. The neural network approach is found to be capable of modeling the backflushing with confidence.

关键词： backflushing neural network model optimize predict casein

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Productive pesticide analysis using capillary flow technology:simultaneous multi-signal detection and backflushing

Productive pesticide analysis using capillary flow technolog...

引用

30th International Symposium on Capillary Chromatography、4th GC×GC Symposium、16th National Symposium and Exhibition on Chromatography,i.e. 1st Dalian International Symposium and Exhibition on Chromatography

作者： Quimby,B. Agilent Technologies Inc.2850 Centerville Road WilmingtonDelaware 19808USA

＜正＞Capillary flow technology is a proprietary technology for Gas Chromatograph（GC）flow manipulation inside the *** this paper,a gas chromatography/mass spectrometer（GC/MS）system using capillary flow technology is employed to perform the pesticide analysis of food *** detail,a 3-way capillary flow splitter is added to the end of the *** column effluent could then be proportionally splitted into multiple detectors,for example,GC detectors and a mass *** this system configuration,the multi-signal detection provides up to 4 signals:full-scan data for library searching,selective ion monitoring （SIM）data for trace analysis,micro-electron capture detector（μECD）and flame photometric detector（FPD） data for excellent selectivity and sensitivity in analyzing compounds in complex matrices.

关键词： Pesticide backflushing Multi-Signal Detection Capillary Flow Technology

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