Effect of kaolinite, silica fines and pH on transport of polymer-modified zero valent iron nano-particles in heterogeneous porous media.

@article{Kim2012EffectOK,
  title={Effect of kaolinite, silica fines and pH on transport of polymer-modified zero valent iron nano-particles in heterogeneous porous media.},
  author={Hye-Jin Kim and Tanapon Phenrat and Robert D Tilton and Gregory V Lowry},
  journal={Journal of colloid and interface science},
  year={2012},
  volume={370 1},
  pages={1-10}
}
Polymer coatings on nano-sized remediation agents and subsurface heterogeneity will affect their transport, likely in a pH-dependent manner. The effect of pH on the aggregation of polymer-coated nanoscale zerovalent iron (nZVI) and its deposition onto sand and clay (kaolinite) surfaces was studied. nZVI coatings included a high molecular weight (90 kg/mol) strong polyanion, poly(methacrylic acid)-b-(methy methacrylate)-b-(styrenesulfonate) (PMAA-PMMA-PSS) and a low molecular weight (2.5 kg/mol… CONTINUE READING

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