陶瓷膜处理肌苷发酵液的研究  

Treatment of inosine fermentation broth with ceramic membrane

作　　者：曾坚贤[1] 邢卫红[2] 徐南平[2] 

机构地区：[1]湘潭工学院化工系,湖南湘潭411201 [2]南京工业大学膜科学技术研究所,南京210009

出　　处：《膜科学与技术》2004年第3期23-27,共5页Membrane Science and Technology

摘　　要：以陶瓷微滤膜过滤肌苷发酵液,考察了操作参数对膜通量的影响,结果表明,在pH为3.5,温度70℃,压差0.1MPa,错流速度为3.25m/s条件下操作,有利于提高膜通量;分析了膜的污染行为,在此基础上,获得了有效的膜清洗方法为:以质量分数为1%NaOH和0.2%NaClO混合溶液清洗膜40min后,再以0.5%的HNO3溶液清洗5min,膜通量可迅速恢复.研究表明,采用陶瓷微滤技术来处理肌苷发酵液是完全可行的.Inosine fermentation broth was filtrated with ceramic microfiltration membbrane.The effect of operation parameters on membrane filtrate flux was investigated.The conclusions were drawn that pH 3.5,temperature 70 ℃,transmembrane pressure 0.1 MPa and cross-flow velocity 3.25 m/s were advantageous to enhance the membrane filtrate flux.The action of membrane fouling was analyzed.The clean methods which can recover efficiently membrane filtrate flux were obtained.It took 40 minutes to clean the membranes by mixed solution composed of 1%(w/w)NaOH and 0.2%(w/w)NaClO.Whereafter,0.5%(w/w)HNO_3 solution was used to clean the membranes for 5 minutes,the membrane filtrate flux can be recovered rapidly.The results indicate that the technology of ceramic microfiltration was feasible for the treatment of inosine fermentation broth.

关 键 词：陶瓷膜 肌苷发酵液 操作参数 膜污染 膜清洗 膜通量 膜分离技术 

分 类 号：TQ920[轻工技术与工程—发酵工程]