Removal of petroleum sulfonate from aqueous solutions using freshly generated magnesium hydroxide

► FGMH produced by Mg-OH method effectively removes PS from its solution. ► The Mg-OH method is an in situ adsorption technology. ► This process could be finished within 60 s. ► The removal mechanism is a coagulation-adsorption process. ► This is a green technology to treat surfactant wastewater.