| 改进的扩散自由体积模型及其在凝胶和固定化细胞中的应用(Ⅰ)模型的建立 |
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| 引用本文： | 李清彪 陈洪钫. 改进的扩散自由体积模型及其在凝胶和固定化细胞中的应用(Ⅰ)模型的建立[J]. 化工学报, 1994, 45(4): 435-440 |
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| 作者姓名： | 李清彪 陈洪钫 |
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| 作者单位： | 天津大学化学工程系!天津300072.厦门大学化学工程系,天津大学化学工程系!天津300072 |
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| 摘 要： | 利用扩散自由体积模型,通过一定的线性假定将凝胶及固定化细胞中的自由体积与各主要影响因素相联系,得到了能表达诸因素对有效扩散系数影响的改进的扩散自由体积模型.其特点是不仅能反映凝胶总单体浓度、交联度及扩散分子大小的影响,而且可以反映温度及细胞浓度对有效扩散系数的影响.
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| 关 键 词： | 扩散模型 凝胶 固定化细胞 |
A MODIFIED FREE VOLUME DIFFUSION MODELAND ITS APPLICATION TO GEL AND IMMOBILIZED CELL MATRIX ( I )MODEL DEVELOPMENT |
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| Li Qingbiao and Chen Hongfang. A MODIFIED FREE VOLUME DIFFUSION MODELAND ITS APPLICATION TO GEL AND IMMOBILIZED CELL MATRIX ( I )MODEL DEVELOPMENT[J]. Journal of Chemical Industry and Engineering(China), 1994, 45(4): 435-440 |
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| Authors: | Li Qingbiao and Chen Hongfang |
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| Affiliation: | Li Qingbiao and Chen Hongfang(Department of Chemical Engineering,Tianjin University,Tanjin ) |
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| Abstract: | A modified free volume model of diffusion has been developed to interpret transport phenomena in gel and immobilized cell matrix. With a set of formulas deduced from the model, the dependence of the effective diffusivity on such factors as gel composition (monomer concentration and crosslinking degree), cell loadings and temperature can be correlated by four linear relations. |
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