用泡沫分离法处理含微量有机化合物稀溶液的研究——模拟从青霉素生产中的萃余相中回收有用有机化合物的研究
文献类型：学位论文
| 作者 | 常志东 |
| 学位类别 | 博士 |
| 答辩日期 | 1999-12-24 |
| 授予单位 | 中国科学院研究生院 |
| 导师 | 陈家镛 ; 刘会洲 |
| 关键词 | 乙酸丁酯 磷酸三丁酯 水溶液 表面活性剂 泡沫分离 |
| 其他题名 | Studies in Processing of Dilute Solutions Containing Organic Compounds by Foam Separation--Simulated Recovery of organic compounds in Wastewater Discharged by Solvent Extraction Operation in Penicillin Production |
| 中文摘要 | 本论文以分别加入适量表面活性剂的乙酸丁酯、磷酸三丁酯水溶液作为模拟青霉素发酵液萃余相，研究了萃余相中溶剂的回收问题。论文中采用间歇式分离塔，考察了料液起始浓度、表面活性剂浓度、表面活性剂种类、温度、pH、离子种类以及离子强度等因素对分离过程的影响。探讨了磷酸三丁酯对吐温系列非离子表面活性剂所产生泡沫性质的影响，并对磷酸三丁酯分离速度的影响因素做了研究。通过对分离过程的数学方程模拟，讨论了分离过程的影响因素。采用红外光谱法研究了磷酸三丁酯、吐温80和水之间的相互作用模式，讨论了磷酸三丁酯、吐温80分子在有水分子影响下的存在形式。 |
| 英文摘要 | The recovery of extractants from wastewater after the extraction of penicillin from fermentation broth is discussed in this paper using simulated system, which is butyl acetate or tributyl phosphate (TBP) aqueous solution added some surfactants. The butyl acetate can be separated no matter what surfactant species are used. During this course, butyl acetate is dissolved in the gas phase since the butyl acetate has higher volatility. The blowing of butyl acetate into the gas phase will grow with the increase of surfactant concentration. It will not go down until it reaches the maximum. The experimental results of foam separation show that TBP can be concentrated in the foam. Both the recovered concentration and the residual concentration of TBP increase with the increase of initial TBP concentration. The TBP enrichment ratio decreases with the increase of Tween 80 concentration. After the TBP enrichment ratio decreases to a minimum, it will increase. With low surfactant concentration, the Tween 80 has the highest TBP recovered concentration. While with high surfactant concentration, the Tween 20 has the highest TBP recovery. Experimental results show that both the anionic surfactant sodium dodecyl sulfate (SDS) and cationic surfactant cetyl-trimethyl-ammonium bromide (CTAB) can concentrate TBP in the foam film. Both TBP recovered concentration and residual concentration increase with the increase of TBP initial concentration. It seems that the TBP recovery is not directly related to pH, ion species, ion strength and the height of separation column. The enrichment ratio of TBP decreases with the increase of surfactant concentration. It is observed that the Critical Micellar concentration (CMC) of SDS is not affected by the addition of TBP through analyzing the results of electric conductivity. A mathematical model for foam separation of TBP from aqueous solution is presented. The numerical results show that: the gas velocity does not affect the separation if other parameters keep constant. The enrichment ratio increases with the decrease of the bubble size. When the adsorption coefficient increases or the equilibrium height for TBP adsorption on the foam decreases, the enrichment increases. The infrared spectra show that both the TBP and Tween 80 molecules can form micelles, when the water content is high enough. There is no strong interaction between TBP and Tween80 by studying the infrared spectra during mixing of TBP and Tween80. The temperature does not affect the infrared adsorption peaks. |
| 语种 | 中文 |
| 公开日期 | 2013-09-27 |
| 页码 | 149 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/1990]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 推荐引用方式 GB/T 7714 | 常志东. 用泡沫分离法处理含微量有机化合物稀溶液的研究——模拟从青霉素生产中的萃余相中回收有用有机化合物的研究[D]. 中国科学院研究生院. 1999. |
入库方式： OAI收割
来源：过程工程研究所
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