| 双极膜电渗析法分离发酵液中乳酸及离子迁移规律 |
| |
| 引用本文： | 林晗,汪群慧,王丽娟,李岩,陈焕玺.双极膜电渗析法分离发酵液中乳酸及离子迁移规律[J].化工学报,2014,65(12):4823-4830. |
| |
| 作者姓名： | 林晗 汪群慧 王丽娟 李岩 陈焕玺 |
| |
| 作者单位： | 1. 北京科技大学土木与环境工程学院, 北京 100083;
2. 工业典型污染物资源化处理北京市重点实验室, 北京 100083;
3. 山西省环境科学研究院, 山西 太原 030027 |
| |
| 基金项目： | 国际合作项目(2013DFG92600)。@@@@supported by the International Cooperation Project |
| |
| 摘 要： | 考察了双极膜电渗析法分离酒糟发酵液中乳酸的影响因素,结果表明:当进料浓度13.5 g·L-1,工作电压27 V,进料浓度比1.3,流量20 L·h-1,电渗析10 h,产品罐中的乳酸浓度增加至20.95 g·L-1,是电渗析前进料罐中的乳酸浓度的1.6倍,具有显著的浓缩效果.酸根离子迁移规律的研究表明,乳酸根离子的迁移速率明显高于其他酸根离子,且丙酸和乙酸的乳酸分离率相对较低.
|
| 关 键 词： | 发酵 动力学 离子迁移 电渗析 乳酸 分离 |
| 收稿时间： | 2014-05-30 |
| 修稿时间： | 2014-07-22 |
Lactic acid recovery from fermentation by bipolar membrane electrodialysis and ionic migration |
| |
| LIN Han,WANG Qunhui,WANG Lijuan,LI Yan,CHEN Huanxi.Lactic acid recovery from fermentation by bipolar membrane electrodialysis and ionic migration[J].Journal of Chemical Industry and Engineering(China),2014,65(12):4823-4830. |
| |
| Authors: | LIN Han WANG Qunhui WANG Lijuan LI Yan CHEN Huanxi |
| |
| Affiliation: | 1. Department of Environmental Engineering, School of Civil and Environmental Engineering, University of Science and Technology, Beijing 100083, China;
2. Beijing Key Laboratory on Resource-oriented Treatment of Industrial Pollutants, Beijing 100083, China;
3. Shanxi Academy of Environmental Science, Taiyuan 030027, Shanxi, China |
| |
| Abstract: | A series of factors were examined in the separation of lactic acid (HLa) from lees fermentation by bipolar membrane electrodialysis. When the fermentation with the initial HLa concentration of 13.5 g·L-1 was treated by bipolar membrane electrodialysis under the conditions of voltage 27 V, feeding concentration ratio 1.3, and flow rate 20 L·h-1 for 10 h, HLa concentration of discharging tank was 20.95 g·L-1, which was 1.6 times the initial concentration, a significant concentrated effect. Moreover, the analysis of acid ion migration shows that immigration rate of lactic acid ions is significantly higher than that of other acid ions. The relative separation efficiency of HLa to propionate and acetic acid are lower. |
| |
| Keywords: | fermentation kinetics ion mobility electrodialysis lactic acid separation |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《化工学报》浏览原始摘要信息 |
|
点击此处可从《化工学报》下载全文 |
|
