IEC 174 |
| Maung-Htun Oo, Jian-Jun Qin, and Hsiaowan Lee. Centre for Advanced Water Technology, Singapore Utilities International Pte Ltd, Blk 2, # 241, 18 Nanyang Drive, Singapore 637723, Singapore, Singapore |
| Removal of boron is an important issue in production of ultrapure water. Removal of boron by reverse osmosis (RO) is normally at a low efficiency. Comparison of boron removal from nickel-plating rinse water and from town water by RO was conducted in this study. Effects of different anti-scalants, glycolic acid and concentration of Fe, Ni and NO3 in the feed on boron removal were investigated. The results showed that boron removal from town water was in a range of 37-41% regardless of any anti-scalants or glycolic acid existing in the feed. However, the boron removal from a nickel-plating rinse water contaminated high concentration of Fe, Ni and NO3 was over 95%. It was also found that a higher feed pH resulted in a higher rejection of glycolic acid. An attempt at explaining the observation was offered. |
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General Poster Session
5:00 PM-7:00 PM, Tuesday, March 25, 2003 Convention Center -- Hall G, Poster
Sci-Mix
Division of Industrial and Engineering Chemistry |