دانلود رایگان مقاله انگلیسی ساخت یک ماژول مقیاس آزمایشی از غشای فیبر توخالی کامپوزیتی نازک برای فرآیندهای اسمز معکوس - وایلی 2018

ABSTRACT:

Polyamide thin film composite hollow fiber membranes have advantages in their unique structure compared to flat sheet membranes. This study examined interfacial polymerization methods for fabricating pilot scale hollow fiber membranes (membrane area: 1.2 m2 , number of hollow fiber strands: 1200). For use in osmotic pressure-driven processes, a one-pot hydrophilic interfacial polymerization procedure was developed simultaneously to modify the surface property and synthesize polyamide thin film. With the procedure, a pilot scale module has a water flux of 13 LMH using a draw solution of 0.6M NaCl and a feed solution of distilled water through the design of the module configuration.

CONCLUSIONS

This study presents a practical method for fabricating PA-TFCHF membranes via IP for commercial utilization in OPD processes. To reduce the production costs and improve performance for the ODP process, a one-pot hydrophilic coating procedure was developed. With this procedure, we successfully produced inside PA using the co-flowing IP method. The methods were directly applied to large size HF modules. With studying the module configuration to minimize the external concentration polarization, the performance of 4-inch PA-TFCHF modules has 13 LMH of water flux. To improve the expected HF performance, we are still developing the configuration of modules as well as optimized HFs with the PHILOS Company (Korea) in order to release the OPD module on the global market.