Performance Evaluation of Nanofiltration Membrane for Separation of Primary Alcohols from Dilute Solutions

摘要

Membranes for separation of alcohols from aqueous solutions were prepared from α, β, γ- cyclodextrin separately and characterized for Membrane thickness, Pore diameter, Pure water permeability, Water uptake, Contact angle and membrane morphology study. Permeation performance of the membranes was tested for primary alcohols such as methanol, ethanol and butanol. Effect of process parameters on flux and rejection of the membranes were studied and permeation models were analyzed. It was observed that β-CD membranes give 99% separation of alcohols from 1.73 molL-1 - 0.766 molL-1 solution at pressure 3 bar. Highest flux value was found to be 91.3 Lm-2hr-1 - 87.3 Lm-2hr-1.