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综合利用:
CHINA OILS AND FATS
2010 Vol. 35 No. 10
生物柴油副产物甘油发酵生产1,3一丙二醇的研究
胡秋龙"2,郑宗明”,刘灿明,刘德华*,刘祥华
(1.湖南农业大学作物种质创新与资源利用国家重点实验室,长沙410128;2.湖南省食品质量监督检测所,长沙410000;3.华北电力大学可再生能源学院,北京102206;4.清华大学化学工程系,北京100084)
摘要:对利用不同生物荣油副产物粗甘油发酵生产1,3-丙二醇的试验条件进行了研究。批次发酵试验结果表明:精制甘油(纯度>98%)、生物柴油副产物粗甘油A(纯度83%)和B(纯度78%)及 C(纯度68%)生成1,3=丙二醇的转化率分别为52.38%、48.08%、45.22%、39.95%;精制甘油、粗甘油A和B及C的流加补料发酵合成1,3-丙二醇的转化率分别为51.45%、44.63%、41.27%、 35.39%。经济效益粗略评估分析表明,生物荣油副产物粗甘油A和B生产单位1,3-丙二醇较
精制甘油成本低,生物荣油副产物粗甘油C却较精制甘油成本高。关键词:1,3-丙二醇;生物荣油副产物粗甘油;发醇
中图分类号:TQ645;TQ923
文献标志码:A
文章编号:10037969(2010)10-005205
Microbialproductionof1,3-propanediolwithcrude
glycerol frombiodiesel production
HU Qiulong', ZHENG Zongming ,LIU Canming',LIU Dehua",LIU Xianghua(1. State Key Lab for Germplasm Innovation and Utilization of Crop, Hunan Agricultural University, Changsha 410128,China; 2. Food Quality Supervision and Inspection Institute,Changsha 410000, China; 3. School of
Renewable Energy, North China Electric University, Beijing 102206,China; 4. Department of
Chemical Engineering, Tsinghua University, Beijing 100084,China)
Abstract: The 1,3 propanediol (1,3 PD) production by fermentation with the crude glycerol from biodiesel production was investigated. The batch fermentation revealed that the 1,3 PD quality conver sion rate of the refined glycerol (purity >98% ), crude glycerol A (purity >83% ), B (purity >78% ), and C (purity >68% ) was 52.38% ,48.08% ,45.22% and 39.95% , respectively. The 1,3 PD qual-ity conversion rate of the refined glycerol, crude glycerol A, B, and C in fed batch fermentation was 51.45% , 44.63%, 41.27% and 35.39% , respectively. The cost analysis showed that the employment of crude glycerol A and B could reduce the cost compared with the refined glycerol . However, the use of crude glycerol C could increased the cost compared with the refined glycerol.
Key words:1 ,3 propanediol; crude glycerol from biodiesel production; fermentation
1,3-丙二醇(1,3-PD)是一种重要的化工原料,它最主要的用途是作为新型聚酯(如PTT)、聚醛和聚亚氨酯的单体,另外可用于生产溶剂、抗冻剂或保护剂等,具有广阔的应用前景1]。1,3-丙二
收稿日期:2010-03-19:修回日期:2010-07-23 基金项目:国家863计划项目资助(2006A.A020103)
作者简介:胡秋龙(1980),男,博士研究生,研究方向为生物能源开发利用(E-mail)huqiulongnet@126.com。
醇可通过化学法和生物法生产,生物法以其可利用可再生资源、对环境污染小而越来越受到人们的重视,各国都致力于研发生物技术合成1,3-丙二醇(2)。
克雷伯氏肺炎杆菌(Klebsiellapneumoniae)是微生物发酵生产1,3-丙二醇的菌种之一,在厌氧及好氧条件下均可利用甘油生长(3-5]。
生物柴油是由动植物油脂转化得到的环保型可再生的清洁能源,目前世界许多国家都在推行使用,