| Autor: |
Hua Ming Xiao, Yu Wang, Zheng Pu Zhang, Rui Zhi Li |
| Rok vydání: |
2012 |
| Předmět: |
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| Zdroj: |
Advanced Materials Research. :790-796 |
| ISSN: |
1662-8985 |
| Popis: |
Two kinds of new type of strong alkali anion exchange fibers (PP-g-Vam-ETA and PP-g-Vam-DAC) have been prepared non-toxically and easily via the quaternary reaction of PP-g-Vam matrix (a kind of weakly basic anion-exchange fiber, produced by our Lab.) with ETA (2,3-epoxypropyl trimethyl ammonium chloride) and the grafting reaction of PP-g-Vam matrix with DAC (acyrloxyethyl trimethylammonium chloride). The exchange capacities of PP-g-Vam-ETA and PP-g-Vam-DAC are 2.1018mmol/g (dry fiber) and 2.0217mmol/g (dry fiber) resp. Its adsorption and desorption performances for NO3- have been studied. The adsorption isotherm curve has been well described by Langmuir equation. The fibers have selective adsorption property for NO3-. The static adsorption capacity of PP-g-Vam-ETA is 11.24 mg/g (dry fiber at pH=3); and PP-g-Vam-DAC is 9.79 mg/g (dry fiber at pH=4). The static desorption rate of the two fibers are above 97%. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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