Improved performance of vacuum membrane distillation in desalination with zeolite membranes

被引：39

作者：

Donato, L. ^{[1
]}

Garofalo, A. ^{[1
]}

Drioli, E. ^{[1
]}

Alharbi, O. ^{[2
]}

Aljlil, S. A. ^{[2
]}

Criscuoli, A. ^{[1
]}

Algieri, C. ^{[1
]}

机构：

[1] Univ Calabria, Natl Res Council, CNR, ITM,Inst Membrane Technol, Cubo 17C,Via Pietro BUCCI, I-87036 Arcavacata Di Rende, CS, Italy

[2] KACST, Riyadh, Saudi Arabia

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2020年 / 237卷

关键词：

Desalination; Calcination; Zeolite membrane; Vacuum membrane distillation; REVERSE-OSMOSIS; STABILITY;

D O I：

10.1016/j.seppur.2019.116376

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A supported Mordenite Framework Inverted (MFI) zeolite membrane with a length of 30 cm was synthesized by the secondary growth method using a fast heating profile for the template removal (calcination) step. The presence of defects into the zeolite layer (before and after calcination) was assessed by means of single gas permeation tests. Afterwards, the membrane performance was evaluated in Vacuum Membrane Distillation (VMD) for desalination. Two cleaning procedures were applied between consecutive experiments on salty solutions and their efficiency compared. NaCl rejections of 99.9% were achieved for feeds ranging from 0.2 M to 0.9 M, dropping down to 97% for the 1.2 M feed. The highest trans-membrane flux (20.6 kg m(-2) h(-1)) was measured for 0.2 M feed, by working at 70 degrees C and 120 L/h.

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页数：7

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