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 concentrati...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 flowrate 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 membrane distillation with this membrane.展开更多
采用双向膜相扩散控制原位化学沉积方法,在聚四氟乙烯(PTFE)膜孔道中及膜面上原位化学沉积、生长磁性纳米 Ni 粒子,制得纳米 Ni 粒子/聚合物磁性复合膜。探讨了制备条件对复合膜磁性能的影响,并用 XRD 和SEM 等手段对磁性复合膜的结构...采用双向膜相扩散控制原位化学沉积方法,在聚四氟乙烯(PTFE)膜孔道中及膜面上原位化学沉积、生长磁性纳米 Ni 粒子,制得纳米 Ni 粒子/聚合物磁性复合膜。探讨了制备条件对复合膜磁性能的影响,并用 XRD 和SEM 等手段对磁性复合膜的结构、组成进行了表征。结果表明,复合膜膜孔中及膜表面上均有纳米级 Ni 粒子生成,且膜孔中的 Ni 粒子对复合膜磁性能具有显著影响。展开更多
文摘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 flowrate 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 membrane distillation with this membrane.
文摘采用双向膜相扩散控制原位化学沉积方法,在聚四氟乙烯(PTFE)膜孔道中及膜面上原位化学沉积、生长磁性纳米 Ni 粒子,制得纳米 Ni 粒子/聚合物磁性复合膜。探讨了制备条件对复合膜磁性能的影响,并用 XRD 和SEM 等手段对磁性复合膜的结构、组成进行了表征。结果表明,复合膜膜孔中及膜表面上均有纳米级 Ni 粒子生成,且膜孔中的 Ni 粒子对复合膜磁性能具有显著影响。