Transport of carboxymethyl cellulose-coated zerovalent iron nanoparticles in a sand tank: Effects of sand grain size, nanoparticle concentration and injection velocity

Chemosphere
Jing LiSubhasis Ghoshal

Abstract

The transport of nanoscale zerovalent iron (NZVI) particles colloidally stabilized with 70,000 Da carboxymethyl cellulose (CMC), through sands with mean grain diameters of 180, 340 and 1140 μm (referred to as fine, intermediate and coarse-sized sand, respectively) was investigated in a 70-cm long, two-dimensional tank. The effect of NZVI concentrations (1 and 3 g-Fe L(-1)) and CMC concentrations (1 and 2 g L(-1)) and injection velocities (0.96 and 0.40 cm min(-1)) on particle transport were also evaluated with the intermediate sand. The overall NZVI mass fractions eluted from the tank were 36%, 25% and 16% in the coarse, intermediate and fine sands, respectively, when injected with 1 g L(-1) NZVI stabilized in 1 g L(-1) CMC. However, the mass fraction eluted reduced to 2.33% when the injection velocity was reduced from 0.96 to 0.40 cm min(-1) in the intermediate-sized sand. Maximum transport efficiency (38% NZVI mass eluted) in the intermediate-sized sand was achieved with 3 g L(-1) NZVI suspended in 2 g L(-1) CMC at an injection velocity of 0.96 cm min(-1). The transport efficiency was substantially decreased (11% NZVI mass eluted) when 3 g L(-1) NZVI was stabilized with only 1 g L(-1) CMC. The NZVI mean particle diameters in ...Continue Reading

References

Oct 25, 2003·Chemosphere·Young-Soo Keum, Qing X Li
Jan 31, 2004·Environmental Science & Technology·Nathalie Tufenkji, Menachem Elimelech
Feb 3, 2007·Environmental Science & Technology·Tanapon PhenratGregory V Lowry
May 30, 2008·Journal of Colloid and Interface Science·Alberto TiraferriMenachem Elimelech
Aug 28, 2009·Environmental Science & Technology·Richard L JohnsonPaul G Tratnyek
Dec 1, 2009·Environmental Science & Technology·Elena Dalla VecchiaRajandrea Sethi
Jun 15, 2010·Journal of Contaminant Hydrology·Peter BennettLester Feldman
Aug 7, 2010·Environmental Science & Technology·Adamo R PetosaNathalie Tufenkji
Oct 13, 2010·Journal of Contaminant Hydrology·Trishikhi RaychoudhurySubhasis Ghoshal
Feb 3, 2011·Journal of Environmental Quality·Ernest M HotzeGregory V Lowry
Dec 25, 2012·Journal of Contaminant Hydrology·Chris M KocurBrent E Sleep

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Citations

Apr 27, 2021·The Science of the Total Environment·Wenpei WuMengfang Chen
Jun 15, 2018·Environmental Science & Technology·Meirav Cohen, Noam Weisbrod

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