期刊
JOURNAL OF APPLIED POLYMER SCIENCE
卷 126, 期 5, 页码 1733-1738出版社
WILEY
DOI: 10.1002/app.36634
关键词
adsorption; fibers; functionalization of polymers; ion exchangers
资金
- Basic Research Foundation of Beijing Institute of Technology [20080242009]
The removal of chromium(VI) from saturated sodium chloride (NaCl) solution by strong alkaline anion-exchange fiber (SAAEF) was achieved with column experiments. Factors affecting the adsorption, such as the pH value, loading density, flow rate, and operational temperature, were investigated. The results show that Cr(VI) removal was remarkably pH dependent. The optimal operational conditions were as follows: pH value = 2.0, loading density = 0.120.19 g/cm3, room temperature, and flow rate = 612 BV/h. The SAAEF column could be regenerated completely by 2% NaOH in saturated NaCl or 2% KOH in 15% KCl as an eluent. Cr(VI) was recycled as Na2Cr2O7 and K2Cr2O7, respectively. The desorption rate of Cr(VI) reached 98.09%. The adsorption ability of the SAAEFs was stable after repeated use. Overall, the results indicate that SAAEF proved to be an effective material for the adsorption of high concentrations of Cr(VI) from a saturated NaCl solution. (c) 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
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