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http://dx.doi.org/10.12989/aer.2016.5.1.051

Reduction of nitrate in groundwater by hematite supported bimetallic catalyst  

Hamid, Shanawar (Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology)
Lee, Woojin (Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology)
Publication Information
Advances in environmental research / v.5, no.1, 2016 , pp. 51-59 More about this Journal
Abstract
In this study, nitrate reduction of real groundwater sample by 2.2%Cu-1.6%Pd-hematite catalyst was evaluated at different nitrate concentrations, catalyst concentrations, and recycling. Results show that the nitrate reduction is improved by increasing the catalyst concentration. Specific nitrate removal by 2.2%Cu-1.6%Pd-hematite increased linearly with the increase of nitrate concentration showing that the catalyst possesses significantly higher reduction capacity. More than 95% nitrate reduction was observed over five recycles by 2.2%Cu-1.6%Pd-hematite with ~56% nitrogen selectivity in all recycling batches. The results from this study indicate that stable reduction of nitrate in groundwater can be achieved by 2.2%Cu-1.6%Pd-hematite over the wide range of initial nitrate inputs.
Keywords
bimetallic catalyst; Cu-Pd-hematite; nitrate reduction in groundwater; specific nitrate removal; catalyst recycling;
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Times Cited By KSCI : 1  (Citation Analysis)
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