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ID:34835124
大小:1.74 MB
页数:94页
时间:2019-03-12
《探析电渗析法处理氨基酸废水》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、太原理工大学硕士学位论文电渗析法处理氨基酸废水姓名:赵瑞华申请学位级别:硕士专业:化学工艺指导教师:凌开成2001.4.1查堕墅盔兰婴主塾兰窒圣曼Z曼.z拿7摘要ll电渗析技术是膜分离技术的一种。它是利用离子交换膜的选择透过性,在直流电场的作用下,使电解质的阴、阳离子发生定向迁移,从而达到净化水质和回收有用物质的双重目的。1/本课题是在实验室范围内,应用电渗析技术对低浓度L.谷氨酸废水进行分离,并对两种膜一异相离子交换膜和均相离子交换膜的分离效果进行比较。另外,对影响电渗析器极限电流密度和过程性能的因素进行了研究,获取到本实验的适宜操作条件,找到了描述设备特性的经验模
2、型一/(1)用异相离子交换膜:f、。,。=13.982(vC。)@.5477i¨-/Ca=128.67v。钮∞(2)用均相离子交换膜:il。F35.074(vC。)O.7052iIi。/C产160.12v““4实验表明,含0.002~0.02mol/L的L~谷氨酸废水经五对膜组装的200×400ram电渗析器后,脱酸率大于98%,COD脱除率为81%。流程长度约为2.5m,电流效率大于80%,耗电量仅为lkWh/m3、,左右。卜√,另外,对混酸物系(L-谷氨酸和甘氨酸的水物系)及柠檬酸废水物系分别进行了电渗析分离处理,得出了脱酸率。同时对两种果汁脱酸进行了初步探讨。关
3、键词:膜分离,电渗析,极限电流密度,L一谷氨酸__』———荃塑塑茎堂壁墼堡苎一一AbstractE1ectrodialysisisakindofmembraneseparatingtechnology.Bytheionexchangemembrane’sperselectivity,anionandcationfromelectrolytewillmovedirectionallYinthedirectcurrentfield,andwastewateristreated,usefulmaterialsarerecovered.Inthepaper,thesepara
4、tionofthewastewateroflow—concentrationL-glutamicacidwasstudiedinthe1aboratoryandtheseparationcapacitiesoftwokindsofmembranes,heterogeneousionexchangemembraneandhomogeneousionexchangemembrane,werecompared.Thefactorsofaffectingtheelectrodialyzeroperationwerediscussed,suchas1imitedcurrentd
5、ensityandprocessperformance.Theappropriateoperationconditionsweregainedandtheempiricalmodelstodescribethecharactersofelectrodialyzerwereestablished:(1)usingheterogeneousionexchangemembrane:i。=13.982(vC。)O.5177i.J0=128.67v“””(2)usinghomogeneousionexchangemembrane:in.=35.074(vC。)O.7052il。
6、./C。=160.12v“⋯Experimentsresultsshowedthatafterthewastewatercontaining0.002~0.02mol/LL-glutamicacidpassedthrougha200X400mmelectrodialyzer,deoxidizationefficiencywasgreaterthan98%,removingefficiencyofCOD80%,flow11太原理工大学硕十毕业论文lengthapproximately2.5m,currentefficieneyabove80%,powerconsumpt
7、iononly1Kwb/m3.Inaddition,thewastewaterofmixedacids⋯L91hitamicacidandacetiCacidandthewastewater0flemonacidwereseparatedrespectivelY.Thedeoxidizationefficienciesofthetwokindsofwastewaterweregained.Meanwhile,thedeoxidizationeffectsoftwokindsoffruitjuicewerediscussedpreliminarilY.
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