氧载体发酵体系的氧传递特性及提高衣康酸产酸能力的研究

Studies on OxygenVectors in Fermentation System and Enhancement of the Productivity of Itaconic Acid

测定了不同氧载体的理化参数，研究了机械搅拌罐氧载体发酵体系中的氧载体的体积分数、搅拌转速和通风量对体积氧传递系数的影响，并推导出传质系数的关联式。实验表明，加入氧载体后，可提高发酵体系的ｋＬａ值３０～２００％，衣康酸发酵中加入氧载体正十二烷，可提高产酸１４％以上。

The properties of different oxygenvectors were determined. The effects of operating parameters (oil volumetric fraction (φ), agitation speed and aeration rate) in oxygenvectorwater system on the volumetric oxygen transfer coefficient kLa were studied in jarfermenters respectively. The results indicated that the kLa gained over 30% increasment in twoliquid phase system, the production of itaconic acid increased by 14% over the control by addition of 5% ndodecaneoxygenvectors.