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. 2022 Jan 27;12(6):3635–3645. doi: 10.1039/d1ra05253e

Isotherm parameters of vanadium and tungsten (50 to 500 mg L−1) adsorption processa.

Langmuir Freundlich Temkin
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q (mg g−1) b (L mg−1) R 2 Pearson's correlation coefficient, r K F ((mg g−1)(L mg−1)1/n) 1/n R 2 Pearson's correlation coefficient, r ΔQ (J mol−1) K o (L mg−1) R 2 Pearson's correlation coefficient, r
V 75.301 1.564 0.974 0.993 53.469 0.078 0.644 0.845 3.337 × 102 3.786 × 107 0.770 0.877
W 69.160 7.692 0.933 0.982 52.869 0.101 0.946 0.977 8.149 × 107 2.402 × 109 0.976 0.988
a

Experimental conditions: initial pH is 7.0 using 0.5 g of ion exchange resin, temperature at 303 K and stirring is 200 rpm, reaction time is 1440 min, volume of the aqueous solution is 100 mL.