Long term pervaporation desalination of tubular MFI zeolite membranes

▸ ZSM-5 membrane water fluxes up to 11.5 kg m−2 h−1 for 0.3 wt% NaCl feed solution. ▸ Stability test (560 h) showed the dissolution of zeolite top-layers. ▸ Dissolution of top-layers due to ion exchange and water dissolution mechanisms. ▸ Dissolved silica and possibly zeolite nano-slabs infiltrated into the support. ▸ The silicalite-1 membrane exhibited high robustness than ZSM-5 membrane.