摘要
应用本文(I)报建立起来的改进的扩散自由体积模型,对聚丙烯酰胺凝胶及其固定化酵母细胞中葡萄糖和(或)乙醇的有效扩散系数与凝胶的单体浓度、交联度、温度和细胞浓度分别进行关联,定性解释和定量关联都令人满意,说明了该模型的适用性.
The validity of the modified free volume diffusion model proposed in the previous paper ( I ) was tested for the interpretation and correlation of data on diffusion in polyacrylamide gel and immobilized yeast cell matrix. The effects of monomer concentration, crosslinking degree, temperature, diffusant size and cell loadings on the effective diffusivities of the diffusants in the above media were quantitatively correlated and qualitatively explained quite well with the model. Good agreement between the regressed equation predictions and the experimental data was obtained. Some semi- empirical equations were also obtained to relate the effective diffusivity in the gel to the composition of the initial solution.
出处
《化工学报》
EI
CAS
CSCD
北大核心
1994年第4期441-447,共7页
CIESC Journal
关键词
扩散模型
凝胶
酵母
固定化细胞
diffusion model
free volume
effective diffusivity
polyacrylamide gel
immobilized yeast cell matrix
