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Degradation of bisphenol A in aqueous solution by persulfate activated with ferrous ion.
MedLine Citation:
PMID:  23322415     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Degradation of bisphenol A (BPA) in aqueous solution was studied with high-efficiency sulfate radical (SO(4) (-·)), which was generated by the activation of persulfate (S(2)O(8) (2-)) with ferrous ion (Fe(2+)). S(2)O(8) (2-) was activated by Fe(2+) to produce SO(4) (-·), and iron powder (Fe(0)) was used as a slow-releasing source of dissolved Fe(2+). The major oxidation products of BPA were determined by liquid chromatography-mass spectrometer. The mineralization efficiency of BPA was monitored by total organic carbon (TOC) analyzer. BPA removal efficiency was improved by the increase of initial S(2)O(8) (2-) or Fe(2+) concentrations and then decreased with excess Fe(2+) concentration. The adding mode of Fe(2+) had significant impact on BPA degradation and mineralization. BPA removal rates increased from 49 to 97 % with sequential addition of Fe(2+), while complete degradation was observed with continuous diffusion of Fe(2+), and the latter achieved higher TOC removal rate. When Fe(0) was employed as a slow-releasing source of dissolved Fe(2+), 100 % of BPA degradation efficiency was achieved, and the highest removal rate of TOC (85 %) was obtained within 2 h. In the Fe(0)-S(2)O(8) (2-) system, Fe(0) as the activator of S(2)O(8) (2-) could offer sustainable oxidation for BPA, and higher TOC removal rate was achieved. It was proved that Fe(0)-S(2)O(8) (2-) system has perspective for future works.
Authors:
Xiaoxuan Jiang; Yanlin Wu; Peng Wang; Hongjing Li; Wenbo Dong
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-16
Journal Detail:
Title:  Environmental science and pollution research international     Volume:  -     ISSN:  1614-7499     ISO Abbreviation:  Environ Sci Pollut Res Int     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9441769     Medline TA:  Environ Sci Pollut Res Int     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China.
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