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Environmental Sciences Europe

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
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