Investigations on the Cleaning Agent in A RO Hollow Fine-Fiber Module
This work was carried out to the make-up water for the boilers at the Tabriz power plant in Iran is treated by a reverse osmosis (RO) process.In this work foulants, cleaning agent on the membrane surface were investigated.The results for EDTA and oxalic acid for removal of foulant on the hollow fine-fiber surface, indicated that SDS and Goli cleaner are not suitable. It was concluded that EDTA and oxalic acid are more effective.
Investigation into the fouling mechanism in a RO hollow fine-fibre module
Abstract As a service to readers who understand German, French or Spanish better than English, the abstract for the research article in this issue follow in these languages.
Frequency selective surface design for blinds applications
In this paper, the reconfigurable blind structure with frequency selective surfaces(FSS) for the building applications are presented. Frequency transmission characteristics for different angles of the proposed blind-FSSs are investigated and verified through simulation and measurement. The simulation results show that we can implement the reconfigurable blind-FSS for multiband wireless applications. To verify the proposed paper, two kinds of blind-FSSs, crossed dipole FSS and circular ring FSS are fabricated and measurements are performed for different angles. The proposed structure in this paper which is very simple, can be easily applied to any planar surface for wireless security applications at low cost.