The amounts and strengths of the acid sites formed during persulphate treatment were higher than those resulting from perchlorate adsorption.
Gamal M.S. El Shafei, Christine A. Philip 2002, 'Solid Acids from Persulphated and Perchlorated Physical Mixtures of Zirconium andTitanium Hydroxides', Adsorption Science & Technologyhttps://doi.org/10.1260/026361702321705267. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)