A Study on Transport Characteristics of CMC-modified Zero Valent Iron (ZVI) Nanoparticles in Porous Media

다공성 매질내에서 CMC로 표면개질된 영가철 나노입자의 이동 특성에 관한 연구

  • Cho, Yun-Chul (Department of Environmental Engineering, Kwangwoon University) ;
  • Choi, Sang-Il (Department of Environmental Engineering, Kwangwoon University)
  • 조윤철 (광운대학교 환경공학과) ;
  • 최상일 (광운대학교 환경공학과)
  • Received : 2009.12.03
  • Accepted : 2009.12.28
  • Published : 2009.12.31


Carboxymethyl cellulose (CMC) as stabilizer is expected to facilitate in-situ delivery of zero-valent iron (ZVI) nanoparticles in a contaminated aquifer because it increases dispersity of ZVI nanoparticles. This work investigated the transport of CMC-stabilized ZVI nanoparticles (CMC-Fe) using column breakthrough experiments. The ZVI nanoparticles (100 mg/L Fe) were transportable through sand porous media. In contrast, non-stabilized ZVI nanoparticles rapidly agglomerate in solution and are stopped in sand porous media. At pH 7 of solution approximately 80% CMC-Fe were eluted. When the pH of solution is below 5, 100% CMC-Fe were eluted. These results suggest that the mobility of CMCFe was increased as pH decreases. In the mobility test under different ionic strengths using $Na^+$ and $Ca^{2+}$ ions, there was no signigficant difference in the mobility of CMC-Fe. Also, in the experiments of effect of clay and natural organic mater (NOM) on the mobility of ZVI, there was no significant difference in the mobility of CMC-Fe not only between 1 and 5% clay, but 100 and 1000 mg/L NOM. The results from this work suggests that the CMC-Fe nanoparticles could be easily delivered into the subsurface over a broad range of ionic strength, clay and NOM.


Supported by : 환경부


  1. Baalousha, M., Manciulea, A., Cumberland, S., Kendall, K., and Lead, J.R., 2008, Aggregation and surface properties of iron oxide nanoparticles: Influence of pH and natural organic matter. Environmental Toxicology and Chemistry, 27, 1875-1882 https://doi.org/10.1897/07-559.1
  2. He, F. and Zhao, D., 2005, Preparation and characterization of a new class of starch-stabilized bimetallic nanoparticles for degradation of chlorinated hydrocarbons in water. Environmental Science and Technology, 39, 3314-3320 https://doi.org/10.1021/es048743y
  3. He, F. and Zhao, D., 2007, Manipulating the size and dispersibility of zerovalent iron nanoparticles by use of carboxymethyl cellulose stabilizers. Environmental Science and Technology, 41, 6216-6221 https://doi.org/10.1021/es0705543
  4. He, F., Zhao, D., Liu, J., and Roberts, C.B., 2007, Stabilization of Fe - Pd nanoparticles with sodium carboxymethyl cellulose for enhanced transport and dechlorination of trichloroethylene in soil and groundwater. Industrial and Engineering Chemistry Research, 46, 29-34 https://doi.org/10.1021/ie0610896
  5. He, F. and Zhao, D., 2008, Hydrodechlorination of trichloroethene using stabilized Fe-Pd nanoparticles: Reaction mechanism and effects of stabilizers, catalysts and reaction conditions. Applied Catalysis B: Environmental, 84, 533-540 https://doi.org/10.1016/j.apcatb.2008.05.008
  6. He, F., Zhang, M., Qian, T., and Zhao, D., 2009, Transport of carboxymethyl cellulose stabilized iron nanoparticles in porous media: Column experiments and modeling. Journal of Colloid and Interface Science, 334, 96-102 https://doi.org/10.1016/j.jcis.2009.02.058
  7. Johnson, R.L., Johnson, G.O'B., Nurmi, J.T., and Tratnyek, P.G., 2009, Natural Organic Matter Enhanced Mobility of Nano Zerovalent Iron. Environmental Science and Technology, 43(14), 5455-5460 https://doi.org/10.1021/es900474f
  8. Kanel, S.R., Nepal, D., Manning, B., and Choi, H., 2007, Transport of surface-modified iron nanoparticle in porous media and application to arsenic(III) remediation. Journal of Nanoparticle Research, 9, 725-735 https://doi.org/10.1007/s11051-007-9225-7
  9. Liu, Tongzhou, Rao, Pinhua, Mak, Mark S.H., Wang, Peng, and Lo, Irene M.C., 2009, Removal of co-present chromate and arsenate by zero-valent iron in groundwater with humic acid and bicarbonate. Water Research, 43, 9, 2540-2548 https://doi.org/10.1016/j.watres.2009.03.005
  10. Nurmi, J.T., Tratnyek, P.G., Sarathy, V., Baer, D.R., Amonette, J.E., Pecher, K., Wang, C., Linehan, J.C., Matson, D.W., Penn, R.L., and Driessen, M.D., 2005, Characterization and properties of metallic iron nanoparticles: Spectroscopy, electrochemistry, and kinetics. Environmental Science and Technology, 39, 221-1230 https://doi.org/10.1021/es040034x
  11. Saleh, N., Kim, H.J., Phenrat, T., Matyjaszewski, K., Tilton, R.D., and Lowry, G.V., 2008, Ionic strength and composition affect the mobility of surface-modified $Fe^0$ nanoparticles in water-saturated sand columns. Environmental Science and Technology, 42, 3349-3355 https://doi.org/10.1021/es071936b
  12. Saleh, N., Phenrat, T., Sirk, K., Dufour, B., Ok, J., Sarbu, T., Matyjaszewski, K., Tilton, R.D., and Lowry, G.V., 2005, Adsorbed triblock copolymers deliver reactive iron nanoparticles to the oil/water interface. Nano Letters, 5, 2489-2494 https://doi.org/10.1021/nl0518268
  13. Schrick, B., Hydutsky, B.W., Blough, J.L., and Mallouk, T.E., 2004, Delivery vehicles for zerovalent metal nanoparticles in soil and groundwater. Chemistry of Materials, 16, 2187-2193 https://doi.org/10.1021/cm0218108
  14. Sirk, Kevin M., Saleh, Navid B., Phenrat, Tanapon, Kim, Hye-Jin, Dufour, Bruno, Ok, Jeongbin, Golas, Patricia L., Matyjaszewski, Krzysztof, Lowry, Gregory V., and Tilton, Robert D., 2009, Effect of Adsorbed Polyelectrolytes on Nanoscale Zero Valent Iron Particle Attachment to Soil Surface Models, Environmental Science and Technology, 43(10), 3803-3808 https://doi.org/10.1021/es803589t
  15. Weng, Liping, Fest, Ellen P.M.J., Fillius, Jeroen, Temminghoff, Erwin J.M., and Van, Willem H., 2002, Transport of Humic and Fulvic Acids in Relation to Metal Mobility in a Copper-Contaminated Acid Sandy Soil. Environmental Science and Technology, 36(8), 1699-1704 https://doi.org/10.1021/es010283a
  16. Zhang, L. and A. Manthiram (1997) Chains composed of nanosize metal particles and identifying the factors driving their formation. Appl. Phys. Lett., 70(18), 2469-2471 https://doi.org/10.1063/1.118859