박주양
2018-04-15T12:30:22Z
2018-04-15T12:30:22Z
2012-05
Chemosphere, Vol.89, No.2 [2012], p172-178
0045-6535
http://www.sciencedirect.com/science/article/pii/S0045653512007515?via%3Dihub
http://hdl.handle.net/20.500.11754/66916
The present study investigates the performance of the zero valent iron (ZVI, Fe0) packed bed bipolar electrolytic cell for nitrate removal. The packing mixture consists of ZVI as electronically conducting material and silica sand as non-conducting material between main cathode and anode electrodes. In the continuous column experiments for the simulated groundwater (initial nitrate and electrical conductivity of about 30mgL−1 as N and 300μScm−1, respectively), above 99% of nitrate was removed at the applied potential of 600V with the main anode placed on the bottom of reactor. The influx nitrate was converted to ammonia (20% to maximum 60%) and nitrite (always less than 0.5mgL−1 as N in the effluent). The optimum packing ratio (v/v) of silica sand to ZVI was found to be 1:1–2:1. Magnetite was observed on the surface of the used ZVI as corrosion product. The reduction at the lower part of the reactor in acidic condition and adsorption at the upper part of the reactor in alkaline condition are the major mechanism of nitrate removal.
The financial support of this research by the Commercialization of Patented Technologies Program of Seoul Business Agency is gratefully acknowledged (Grant No. PA100095).
en
Elsevier Science B.V., Amsterdam.
Bipolar electrolytic cell
Nitrate removal
Zero valent iron
Magnetite
Electrochemical removal of nitrate using ZVI packed bed bipolar electrolytic cell
Article
2
89
10.1016/j.chemosphere.2012.05.104
172-178
CHEMOSPHERE
Jeong, J. Y.
Kim, H. K.
Kim, J. H.
Park, J. Y.
2012201838
S
COLLEGE OF ENGINEERING[S]
DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
jooypark
49862059900