乳状液膜法提取制革废水中Cr^(3+)的传质模型研究

Study on the mathematic models of emulsion liquid membrane with carrier extracting Cr^(3+) from tannery wastewater

采用改进的渐进前沿模型研究以对叔丁基杯[4]芳烃乙酸(简称为B[4])为载体提取制革废水中Cr3+的传质过程,在渐进前沿模型的基础上通过对传质阻力的假设得到了3个方程组;通过实验求得相应的模型参数;用Matlab软件求解模型方程,结果表明,在该传质过程中,阻力主要为膜外相边界层传质阻力、膜相传质阻力、膜破损阻力,且膜外相边界层传质阻力起控制作用.

Studied on the mathematic models of emulsion liquid membrane（ELM） system with carrier extracting Cr^3＋ from tannery wastewater, three sets of equations were gained by resistance assumptions funded on the advancing front model; parameters of the mathematic models were gained from the designed experiments; Three solutions of the mathematic model were gained by Matlab software, and the advancing front model agreed well the mass transfer process in ELM system. It showed that, the major resistances of the whole mass transfer process in this ELM system were the resistance of outside boundary layer, the diffusion resistance in membrane, and the resistance of membrane broken. , and the whole mass transfer process in this ELM system was controlled by the resistance of foreign boundary layer.