AWWA MTC64637

The objectives of this slide presentation were to outline the viability of ammonia-carbon dioxide(NH₃-CO₂) forward osmosis;evaluate membrane performance under avariety of feed and draw solutionconcentrations; and, evaluate energy use. The presentation provides a schematic of the experimental setup, a homogenous dense membrane, an asymmetric membrane (FO mode), and figures are given for membrane performance results and energy usage. Concluding remarks include:NH₃-CO₂ forward osmosis may be a viable desalinationalternative;internal concentration polarization significantly hindersperformance, ICP is more severe for higher drawsolution concentrations;the presence of ICP forces the use of higher drawsolution concentrations, increasing the load on the drawsolute recovery system; and,tailoring of a membrane for forward osmosis would helpreduce ICP phenomena and hence reduce energyrequirements and increased GOR. Includes figures.

Product Details

Edition:

Vol. - No.

Published:

03/01/2007

Number of Pages:

32

File Size:

1 file