Dynamic adsorption process of phthalate at goethite/aqueous interface: An ATR-FTIR study

- Phthalate adsorption at the goethite/aqueous interface was studied using ATR-FTIR.
- Phthalate form one outer-sphere and two bidentate inner-sphere surface complexes.
- Outer-sphere complex is suppressed with increasing ionic strength.
- Adsorption follow pseudo-second-order kinetics and reach equilibrium within 60 min.