STUDY ON CONCENTRATING SULFURIC ACID SOLUTION BY MEMBRANE DISTILLATION WITH METAL-PTFE COMPOSITE MEMBRANE

来源期刊：中南大学学报(英文版)1999年第2期

论文作者：Zhang Guiqing Zhang Qixiu Zhou Kanggen Luo Aiping

文章页码：95 - 98

Key words：metal-PTFE composite membrane; membrane distillation; sulfuric acid

Abstract: concentrating sulfuric acid by membrane distillation in a flat-sheet direct-contact membrane distillation device with a self-made metal-PTFE composite membrane has been studied. The effect of sulfuric acid concentration of feed, the flow ate and liquor temperature in high-temperature side and low-temperature side on the flux and separation efficiency is investigated. The stability of this composite membrane is also inspected. The experimental results show that the metal-PTFE composite membrane can be used in membrane distillation, and its properties are very stable. It is feasible to concentrate sulfuric acid by embrane distillation with this membrane.