Gros JB, Dussap CG, Catté M
Laboratoire de Génie Chimique Biologique, Université Blaise Pascal, 63177 Aubière Cedex, France.
Biotechnol Prog. 1999 Oct 1;15(5):923-927. doi: 10.1021/bp990074i.
A simple model for predicting gas solubilities of O(2) and CO(2) at low pressure and near ambient temperature in solutions of salts, sugars, and organic solvents (alcohols, ketones, ethers, aldehydes, etc.) is proposed. It is derived from the Van Laar assumptions and takes account of size differences between molecules in solution by their volumetric fraction. It is a group contribution model where anions and cations are considered as groups and other molecules are treated as in the UNIFAC (UNIQUAC Functional group Activity Coefficients) procedure. Pseudo-Henry's constants for groups were determined using solubility data in aqueous solutions containing only one salt, one sugar, or one organic compound at 25 degrees C. The predictive performance of the model was evaluated by comparison with experimental data using multicomponent aqueous salt-sugar mixtures. The model was used to estimate solubilities of oxygen and carbon dioxide in fermentation media.
提出了一个简单模型，用于预测在低压和接近环境温度下，氧气（O₂）和二氧化碳（CO₂）在盐、糖和有机溶剂（醇、酮、醚、醛等）溶液中的气体溶解度。该模型源自范拉尔假设，并通过体积分数考虑溶液中分子间的尺寸差异。它是一个基团贡献模型，其中阴离子和阳离子被视为基团，其他分子的处理方式与UNIFAC（UNIQUAC基团活度系数）方法相同。使用25℃下仅含一种盐、一种糖或一种有机化合物的水溶液中的溶解度数据，确定了基团的伪亨利常数。通过与使用多组分盐水 - 糖混合物的实验数据进行比较，评估了该模型的预测性能。该模型用于估计氧气和二氧化碳在发酵培养基中的溶解度。
