摘要
在直径 1 0 0 mm,体积 4.7L的环隙气升式内环流反应器内 ,考察了不同通气量及培养基含固量对苏云金芽孢杆菌 (Bacillusthuringiensis,简称 Bt) HD- 1发酵水平的影响。实验表明 ,在该反应器中 ,Bt- HD- 1发酵的最佳通气量为 1 .75 L/min,最佳培养基含固量为 3 .5 %。此外 ,通过研究通气量和培养基含固量对终止 DO及终止 p H的影响发现 ,在环隙气升式内环流反应器中 ,Bt- HD- 1发酵的正常指标为 ,终止 p H>7.0 ,终止 DO>6 0%
To reduce productive cost and raise the leval of formentation,the effect of the air flux and the solid percentage of the medium on Bt HD 1 formentation in an annulus airlift reactor in Φ100 mm and volume of 4.7 L is invesrigated.The results show that with this type of reactor,the optimum air flux is 1.75 L/min and the solid percentage of the medium is 3.5%.Furthermore,it is found by examining the effect of air flux and solid percentage of the medium on DO and pH at the end of fermentation that the normal indice of the formentation are pH>7.0 and DO>60% at the end of fermentation in annulus airlift reactor
出处
《西北大学学报（自然科学版）》
CAS
CSCD
北大核心
2001年第5期396-398,共3页
Journal of Northwest University（Natural Science Edition）
基金
陕西省科技攻关资助课题 (97K0 3- J6 )
