利用膜蒸馏技术浓缩谷氨酸中和液及产水回用的研究.docVIP

利用膜蒸馏技术浓缩谷氨酸中和液及产水回用的研究 杨士春1，2 吕晓龙1 （1. 天津市中空纤维膜材料与膜过程重点实验室 - 省部共建国家重点实验室培育基地 , 天津工业大学生物化工研究所， 天津 3001602.天津农学院农业分析测试中心 天津300384 ） 摘要：本论文采用脱色正交试验优化工艺条件，得出最佳组合A3C3B1E1D3即H2SO4：1.5%；HCl：5%和海泡石：1.5g/l；转速100转/min；时间：1.5h。利用膜蒸馏技术取代干燥器浓缩谷氨酸中和液，提高谷氨酸中和液谷氨酸钠的浓度。60%过饱和起晶。产水色度和电导率滤液气色谱的对比分析产水可以回。利用傅立叶红外推测中和液主要成分为氨基酸类物质。提高了经济效益。Study on the concentration process of glutamic acid neutralizer by vaccum membrane distillation method and reuse water production Yang shichun1,2 LV Xiaolong1 （1、State Key Laboratory of Training Baseof H ollow Fiber Membrane Materials and Membrane Process, Institute of Biologicaland Chemical Engineering, Tianjin Polytechnic University, Tianjin 300160 , China 2、tianjin agricultural university analysis test center tianjin 300384） Abstract: By orthogonal experiment method, this paper the optimal decoloring conditions This paper using decoloring orthogonal test, to optimizate the process conditions ,finds out that the best combination is A3C3B1E1D3 ,namely H2SO4：1.5%；HCl：5% and sepiolite: 1.5 g/l; speed 100 r/min; time: 1.5 h. Using the membrane distillation technology replaced the dryer to enrich the glutamic acid neutralizer, improved the concentration of sodium glutamate in the glutamic acid neutralizer. The membrane distillation flux of glutamic acid neutralizer changes with the concentration multiple curve shows that when the concentration up to 60% ,the glutamic acid neutralizer supersaturated up crystal ,and the membrane distillation cant go on. The chrominance of water production and conductivity suggest that some volatile substances are formed.Comparatively analysis the out peak time of some materials in the glutamate filtrate gas chromatography with those in the water production of the membrane distillated glutamic acid neutralizer shows that volatile matters in the water production of the membrane distillated glutamic acid neutralizer are from the glutamic acid ferment tank,and the water production can recycle to glutamic acid ferment tank. Using