含碳纳米管渗透汽化膜的制备及在生物乙醇分离中的应用

he carbon nanotubes (CNTs) filled polydimethylsiloxane (PDMS) hybrid membrane was fabricated to evaluate its potential for ethanol recovery by using pervaporation. The maximum total flux and ethanol separation factor reached up to 43.3 g/m2 h and 6.3, respectively, when the PDMS membrane filled with 10 wt% CNTs was used to separate ethanol from the ethanol/water solution at 30℃. In addition, the ethanol flux increased dramatically with the increasing of temperature and ethanol titer in feed. Furthermore, the swelling ratios of membranes increased quickly with the increasing of the concentration of the solution in the range inner examining. The demonstrating results indicated that CNTs mixed membrane had great potentials in ethanol recovery from fermentation broth in bioethanol fermenation.