박주양
2017-10-10T07:01:50Z
2017-10-10T07:01:50Z
2015-12
APPLIED ENERGY, v. 160, Page. 18-27
0306-2619
1872-9118
http://www.sciencedirect.com/science/article/pii/S0306261915011113?via%3Dihub
http://hdl.handle.net/20.500.11754/29550
The use of a single chamber fuel cell with an iron anode and air cathode is a new and innovative concept in electrocoagulation. In this study, we investigated the predominant reactions that contribute to the production of electricity and iron hydroxides in solution. Solutions composed of 0.06 M NaHCO3 and 0.05 M NaCl at an initial pH of 5 were determined to be optimal for producing the maximum power density of 1997 mW/m(2) after 24 h. Increases in the bicarbonate concentration and ionic strength of the solution induced a corresponding decrease in the anode potential and increase in the cathode potential, which resulted in an increase in the cell potential and power density. Further, increasing the NaHCO3 concentration to 0.1 M and the ionic strength of the solution to 0.56 M induced an increase in the maximum power densities to 2436 and 4343 mW/m(2), respectively. Initial pH values of 7.5 and 8.5 in solutions containing 0.06 M NaHCO3 and 0.05 M NaCl were employed to synthesize magnetic iron hydroxides including magnetite and maghemite. These results suggest that this fuel cell technology can be used not only for electrocoagulation with the removal of contaminants, but also for producing useful products such as electricity and magnetic iron hydroxides. Advances in waste water air-metal fuel cells will enable more efficient power generation and systems suitable for scale-up. (C) 2015 Elsevier Ltd. All rights reserved.
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2013R1A1A2060315).
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ELSEVIER SCI LTD
Iron-air fuel cell
Electrocoagulation
Iron hydroxides recovery
Waste water treatment
Electricity production
Electricity generation and recovery of iron hydroxides using a single chamber fuel cell with iron anode and air-cathode for electrocoagulation
Article
160
10.1016/j.apenergy.2015.09.041
18-27
APPLIED ENERGY
Kim, Jung Hwan
Park, I. Seul
Park, Joo Yang
2015002319
S
COLLEGE OF ENGINEERING[S]
DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
jooypark