Table 3 Thermodynamic parameters of Cr(VI) adsorption on persulfate-modified AC (Agitation time 5 h, Speed: 150 rpm, Cr: 100 mg L−1, Adsorbent: 0.03 g, and Solution volume: 10 mL).

From: Intensification of Cr(VI) adsorption using activated carbon adsorbent modified with ammonium persulfate

ΔH◦ (kJ.mol−1)

ΔS◦ (kJ−1.mol−1.K−1)

ΔG◦ (kJ.mol−1)

R2

298

308

318

328

338

18.28

0.06

− 2.63

− 3.23

− 4.36

− 5.54

− 6.58

0.982

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