期刊
CHEMICAL ENGINEERING JOURNAL
卷 155, 期 3, 页码 769-774出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2009.09.021
关键词
NiEDTA wastewater; FR-HP process; Fenton reaction; Fenton-like reaction
资金
- Nature Science Foundation of Guangdong Province [9451009001002753]
- Doctoral Startup Foundation of Guangdong University of Technology [083013]
It is difficult to remove Ni(II) from NiEDTA wastewater by many conventional processes. A new method for removing Ni(II) from NiEDTA wastewater by Fenton and Fenton-like reaction followed by hydroxide precipitation presents an important breakthrough. This treatment process is referred to as Fenton/Fenton-like reaction-hydroxide precipitation (FR-HP) process. This study investigated the use of FR-HP process for the removal of Ni(II) from NiEDTA complex wastewater. The removal efficiency of Ni(II) by FR-HP process was investigated and the kinetics of the two processes was studied. Results indicated that the removal efficiency was strongly dependent on the initial concentration of Fe2+ or Fe3+ and H2O2, initial and precipitation pH and temperature. Both FR-HP processes can effectively remove Ni(II). At optimal operation conditions, the removal efficiency of Ni(II) were 92.8% and 94.7% for Fenton and Fenton-like systems after 60 min, respectively. FR-HP process seems to be an economically and environmentally friendly process to remove the metal from metal-EDTA wastewater. Hopefully, FR-HP process will promote the development of metal-EDTA treatment technology. (C) 2009 Elsevier B.V. All rights reserved.
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