Bis-pyridinium dibromides modified organo-bentonite for the removal of aniline from wastewater: A positive role of π-π polar interaction

The main mechanisms and removal rate (R) of aniline adsorption on HEMBP-B, Na-B and HM-B. *Concentration of adsorption = 0.5 g/50 mL, C0 = 50 mg L−1, t = 120 min, T = 298 K, pH = 6.6.