標題: Reductive catalysis of novel TiO2/Fe-0 composite under UV irradiation for nitrate removal from aqueous solution
作者: Pan, Jill Ruhsing
Huang, Chihpin
Hsieh, Wen-Pin
Wu, Bi-Ju
環境工程研究所
生物科技學系
Institute of Environmental Engineering
Department of Biological Science and Technology
關鍵字: Nitrate;Zero-valent iron;TiO2;Catalysis
公開日期: 9-Jan-2012
摘要: Groundwater contaminated by nitrate has become a worldwide problem. Existing technologies for nitrate removal, including zero-valent iron reduction, can only transform nitrate ions to predominantly NH4+. As a result, many studies have concentrated on seeking a solution to convert nitrate to N-2. In this study, the efficiencies of nitrate removal from aqueous solution by single (TiO2 and nano zero valent iron, nZVI), and composite (Nano-TiO2-Fe-0 composite, NTFC) system under UV illumination were prepared. Among the three systems, both nZVI and NTFC can effectively remove nitrate. However, only NTFC can achieve satisfactory transformation of nitrate to N-2. Further investigation has proven that the composition of NTFC (TiO2/nZVI ratio) greatly influences the conversion of nitrate to N-2, which can be attributed to the maintenance of high level of ferrous ions in the NTFC system due to its reducing condition. (C) 2011 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.seppur.2011.06.024
http://hdl.handle.net/11536/15412
ISSN: 1383-5866
DOI: 10.1016/j.seppur.2011.06.024
期刊: SEPARATION AND PURIFICATION TECHNOLOGY
Volume: 84
Issue: 
起始頁: 52
結束頁: 55
Appears in Collections:Conferences Paper


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