- 作者: S. S. Madaeni* and H. R. Godini
- 作者服務機構: Chemical Engineering Department, Razi University, Kermanshah, Iran
- 中文摘要:
Treatment of metal ions’ wastes is getting more interest due to the tight regulations for environmental protection. Dialysis, a membrane based process with the concentration difference as the driving force, may be used for separation of metal ions from wastewater.
In this study membranes with different pore sizes including Accurel, Celgard, GVHP, PM30 and PTHK membranes were employed to characterise the transport of zinc ion in various (0.01, 0.1, 0.5, 1, 5 and 10 w/v percent) initial feed concentrations.
The results show that low initial feed concentration causes less passage of ions through the membrane due to low driving force, i.e. concentration gradient across the membrane. This result is expected. However the effect of membrane pore size is somehow unexpected. It was found that the large pore size membranes provide less penetration of the metal ions through the membrane. This reproducible result has been explained based on the transport mechanism. Two types of mechanisms, i.e. extensive and intensive mechanisms, have been suggested for metal ion transport through different pore size membranes. - 英文摘要: --
- 中文關鍵字: Membrane; ?Dialysis; ?Ion; ?Transport; ?Zinc.
- 英文關鍵字: --