Supplementary Information
Inhibition of nitrate reduction by NaCl adsorption on nano zero
valent iron surface during concentrate treatment for water reuse
Yuhoon Hwang1,3*, Dogun Kim2, Hang-Sik Shin3
1
Department of Environmental Engineering, Technical University of Denmark, Miljøvej, Building 113, 2800
Lyngby, Denmark
2
Department of Civil Engineering, Kyunghee University Global Campus, 1732, Deogyeong-daero, Giheung-gu,
Yongin-si, Gyeonggi-do, 446-701, Republic of Korea
3
Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology,
291 Daehak-ro, Yuseong-gu, Daejeon, 305-701, Republic of Korea
* Corresponding author
Present address: Department of Environmental Engineering, Technical University of Denmark, Miljøvej,
Building 113, 2800 Lyngby, Denmark
Tel. +45-4525-2173
E-mail address: [email protected] (Yuhoon Hwang)
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Figure S1. The nitrate reduction profiles with different NaCl concentrations; 1,250 mg-Fe/L,
100 mg-NO3--N/L, 0-20 g NaCl/L
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(a)
(b)
(c)
Figure S2. Overall mass balance during nitrate reduction by nZVI; (a) 0 g-NaCl/L, (b) 0.5 gNaCl/L, (c) 12 g-NaCl/L
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Figure S3. (a) Amount of nitrate adsorption under different NaCl concentrations (1,250 mgFe/L, 100 mg-NO3--N/L) (b) TDS concentration with respect to time (1,250 mg-Fe/L, 100
mg-NO3--N/L, 10 g NaCl/L)
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(a)
(b)
Figure S4 The EDS spectra of the spent core-shell structured NZVI (12 g NaCl/L) (a) core,
(b) shell
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