17 research outputs found
Removal and Recovery of Organic Solvents from Aqueous Waste Mixtures by Extractive and Pressure Swing Distillation
Different scenarios for handling wastewaters of different
concentrations containing acetone and methanol (in equimolar quantities)
in order to remove and/or recover organic components are investigated
by rigorous simulation. The extractive and pressure swing distillation
processes are optimized by genetic algorithm (GA). The different alternatives
including incineration of the whole amount of waste are compared on
the basis of the capital, operation, and total annual costs. The influence
of the water content of the waste mixture is also investigated. The
best results are obtained with the separation of the whole quantity
of the waste mixture into specified purity products by extractive
distillation. The results obtained for pressure swing distillation
with heat integration remained only slightly under those of the extractive
distillation