2,3-丁二醇的絮凝预处理研究 |
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引用本文: | 吴艳阳,朱家文,陈葵,武斌,沈亚领. 2,3-丁二醇的絮凝预处理研究[J]. 化学工程, 2009, 37(11) |
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作者姓名: | 吴艳阳 朱家文 陈葵 武斌 沈亚领 |
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作者单位: | 华东理工大学,化工分离研究所,上海,200237;华东理工大学,生物反应器工程国家重点实验室,上海,200237 |
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基金项目: | 国家"863"计划资助项目 |
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摘 要: | 为使生物法制备2,3-丁二醇的后续分离纯化过程顺利进行,研究了絮凝法预处理2,3-丁二醇发酵液。选用10种絮凝剂,以絮凝率和蛋白去除率为指标,分别考察了絮凝剂、质量浓度、pH值、温度和搅拌时间等条件对2,3-丁二醇发酵液的絮凝效果、浓度及后续萃取过程的影响,得出较优絮凝条件:以氯化铁为絮凝剂,质量浓度为23 g/L,pH值5.1,温度为20—50℃,搅拌时间15 m in,静置20 m in。在此工艺条件下,2,3-丁二醇的絮凝率和蛋白去除率均可高达98%以上,为后续的分离纯化过程奠定基础。
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关 键 词: | 2 3-丁二醇 絮凝 絮凝剂 |
Flocculation pretreatment of 2,3-butanediol |
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Abstract: | In order to realize the separation and purification of 2,3-butaneidol from bioconversion,the flocculation of 2,3-butanediol fermented broth with 10 flocculants was studied.With the analysis of flocculation rate and protein removing rate,the influence of different conditions on the flocculation effects,concentration of 2,3-butanediol and subsequent extraction process was studied systematically.The suitable flocculation conditions were obtained as follows: FeCl3 as flocculant,the dosage 23 g/L,pH=5.1,temperature 20—50 ℃,stirring for 15 min and settling for 20 min.Under those conditions,both flocculation rate and protein removing rate can be above 98%,which is helpful for the succeeding separation and purification process. |
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Keywords: | 2,3-butanediol flocculation flocculant |
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