Table 4 Properties of the clay minerals used in the experiments.

From: Smectite clay minerals reduce the acute toxicity of quaternary alkylammonium compounds towards potentially pathogenic bacterial taxa present in manure and soil

Name

Montmorillonite

Kaolinite

Molecular structure (schematically)

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Brand

Volclay

Pharmakaolin B860

Supplier

AMCOL Specialty Minerals (Cheshire, England)

ZIEGLER Mineralstoffe (Wunsiedel, Deutschland)

Chemical formula

(Na,Ca)0.33 (Al1.67Mg0.33) Si4O10(OH)2 · nH2O a

Al2Si2O5(OH)4 b

BET surface area [m2 g−1]

42

22

CEC [cmolc kg−1]

106.5

6.7

  1. The cation exchange capacity (CEC) of the minerals was determined with the Cu-triethylenetetramine-complex-method. Specific surface areas were derived from BET sorption isotherms.
  2. a51.
  3. b52.
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