IWA Publishing

Table 1

Hydrated radius and diffusion coefficient of ions

Ions	Hydrated radius/nm	Diffusion coefficient in water/10⁻⁹m²·s⁻¹, 25 °C
Na⁺	0.365	1.33
Cu²⁺	0.429	0.71
Mg²⁺	0.419	0.65
Cl⁻	0.332	2.03
NO₃⁻	0.340	1.85
SO₄²⁻	0.397	1.06

Ions	Hydrated radius/nm	Diffusion coefficient in water/10⁻⁹m²·s⁻¹, 25 °C
Na⁺	0.365	1.33
Cu²⁺	0.429	0.71
Mg²⁺	0.419	0.65
Cl⁻	0.332	2.03
NO₃⁻	0.340	1.85
SO₄²⁻	0.397	1.06