DOI QR코드

DOI QR Code

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)
  • 투고 : 2016.03.01
  • 심사 : 2016.04.06
  • 발행 : 2016.03.25

초록

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.

키워드

과제정보

연구 과제 주관 기관 : National Research Foundation of Korea (NRF), Korean Ministry of Environment

참고문헌

  1. Bae, S., Jung, J. and Lee, W. (2013), "The effect of pH and zwitterionic buffers on catalytic nitrate reduction by $TiO_2$ bimetallic catalyst", Chem. Eng. J., 232, 327-337. https://doi.org/10.1016/j.cej.2013.07.099
  2. Chaplin, B.P., Reinhard, M., Schneider, W.F., Schuth, C., Shapley, J.R., Strathmann, T.J. and Werth, C.J. (2012), "Critical review of Pd-based catalytic treatment of priority contaminants in water", Environ. Sci. Technol., 46(7), 3655-3670. https://doi.org/10.1021/es204087q
  3. Chaplin, B.P., Roundy, E., Guy, K.A., Shapley, J.R. and Werth, C.J. (2006), "Effects of natural water ions and humic acid on catalytic nitrate reduction kinetics using an alumina supported Pd-Cu catalyst", Environ. Sci. Technol., 40(9), 3075-3081. https://doi.org/10.1021/es0525298
  4. Choi, J., Batchelor, B., Won, C. and Chung, J. (2012) "Nitrate reduction by green rusts modified with trace metals", Chemosphere, 86(8), 860-865. https://doi.org/10.1016/j.chemosphere.2011.11.035
  5. Deganello, F., Liotta, L.F., Macaluso, A., Venezia, A.M. and Deganello, G. (2000), "Catalytic reduction of nitrates and nitrites in water solution on pumice-supported Pd-Cu catalysts", Appl. Catal. B - Environ., 24(3), 265-273. https://doi.org/10.1016/S0926-3373(99)00109-5
  6. Hamid, S., Bae, S., Lee, W., Amin, M.T. and Alazba, A.A. (2015), "Catalytic nitrate removal in continuous bimetallic Cu-Pd/NZVI system", Ind. Eng. Chem. Res., 54(24), 6247-6257. https://doi.org/10.1021/acs.iecr.5b01127
  7. Hamid, S. and Lee, W. (2015), "Nitrate reduction by iron supported bimetallic catalyst in low and high nitrogen regimes", Adv. Environ. Res., 4(4), 263-271. https://doi.org/10.12989/aer.2015.4.4.263
  8. Hamid, S., Macharla, A.K. and Lee, W. (2016), "Highly reactive and selective Sn-Pd bimetallic catalyst supported by nanocrystalline ZSM-5 for aqueous nitrate reduction", Appl. Catal. B: Environ., 187, 37-46. https://doi.org/10.1016/j.apcatb.2016.01.035
  9. Jung, J., Bae, S. and Lee, W. (2012), "Nitrate reduction by maghemite supported Cu-Pd bimetallic catalyst", Appl. Catal. B-Environ., 127, 148-158. https://doi.org/10.1016/j.apcatb.2012.08.017
  10. Jung, S., Bae, S. and Lee, W. (2014), "Development of Pd-Cu/Hematite catalyst for selective nitrate reduction", Environ. Sci. Technol., 48(16), 9651-9658. https://doi.org/10.1021/es502263p
  11. Lemaignen, L., Tong, C., Begon, V., Burch, R. and Chadwick, D. (2002), "Catalytic denitrification of water with palladium-based catalysts supported on activated carbons", Catal. Today, 75(1), 43-48. https://doi.org/10.1016/S0920-5861(02)00042-1
  12. Pintar, A., Batista, J. and Musevic, I. (2004), "Palladium-copper and palladium-tin catalysts in the liquid phase nitrate hydrogenation in a batch-recycle reactor", Appl. Catal. B - Environ., 52(1), 49-60. https://doi.org/10.1016/j.apcatb.2004.02.019
  13. Pintar, A., Batista, J. and Levec, J. (2001), "Catalytic denitrification: Direct and indirect removal of nitrates from potable water", Catal. Today, 66(2), 503-510. https://doi.org/10.1016/S0920-5861(00)00622-2
  14. Pintar, A., Vetinc, M. and Levec, J. (1998), "Hardness and salt effects on catalytic hydrogenation of aqueous nitrate solutions", J. Catal., 174(1), 72-87. https://doi.org/10.1006/jcat.1997.1960
  15. Pirkanniemi, K. and Sillanpaab, M. (2002), "Heterogeneous water phase catalysis as an environmental application: a review", Chemosphere, 48(10), 1047-1060. https://doi.org/10.1016/S0045-6535(02)00168-6
  16. Prusse, U., Hahnlein, M., Daum, J. and Vorlop, K.D. (2000), "Improving the catalytic nitrate reduction", Catal. Today, 55(1), 79-90. https://doi.org/10.1016/S0920-5861(99)00228-X
  17. Shin, H., Jung, S., Bae, S., Lee, W. and Kim, H. (2014), "Nitrite reduction mechanism on a Pd surface", Environ. Sci. Technol., 48(21), 12768-12774. https://doi.org/10.1021/es503772x
  18. Shindler, Y., Matatov-Meytal, Y. and Sheintuch, M. (2001), "Wet hydrodechlorination of p-chlorophenol using Pd supported on an activated carbon cloth", Ind. Eng. Chem. Res., 40(15), 3301- 3301-3308. https://doi.org/10.1021/ie001019d

피인용 문헌

  1. Recent progress on Fe-based nanoparticles: Synthesis, properties, characterization and environmental applications vol.4, pp.3, 2016, https://doi.org/10.1016/j.jece.2016.07.035
  2. A comparative study of granular activated carbon and sand as water filtration media with estimation of model parameters vol.6, pp.1, 2016, https://doi.org/10.12989/aer.2017.6.1.035
  3. Competitive inhibition of catalytic nitrate reduction over Cu–Pd-hematite by groundwater oxyanions vol.290, pp.None, 2016, https://doi.org/10.1016/j.chemosphere.2021.133331