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Table 7 Langmuir isotherm parameters of the (P)HCA adsorption onto gibbsite in the ACPW medium

From: Adsorption of aliphatic polyhydroxy carboxylic acids on gibbsite: pH dependency and importance of adsorbate structure

(P)HCA χ2/DoF r2 KL ± SD [L mol−1] Csat ± SD [mol kg−1]
GLY 0.34 0.894 1.30 ± 0.43 8.9 ± 1.3
THR 0.31 0.900 4.0 ± 1.60 8.1 ± 1.3
TAR 0.12 0.981 4.62 ± 1.15 21.2 ± 2.3
GLU 1.00 0.872 1.87 ± 0.59 25.9 ± 3.0
GLA 0.38 0.970 0.57 ± 0.14 67.7 ± 9.6
  1. Reduced data set (Ceq ≤ 20 mmol L−1)
  2. KL, Langmuir affinity constant; Csat, saturation concentration; SD standard deviation; χ2/DoF probability distribution normalized to the number of data points; r2 determination coefficient