it was found that P
adsorption on pyrrhotite fit both Freundlich and Langmuir isotherm
models at 11.3 and 21◦
C, and fit Langmuir isotherm model better
than Freundlich model at 29◦
C.
It canbe inferredthat P adsorption
on pyrrhotite should be chemisorption because Lamgmuir adsorption isotherm is usually considered better to describe single-layer
adsorption.