Phosphate/sulphate exchange studies on Amberlite IRA-400.

S Mustafa, A Naeem, N Rehana, A Hamid, B Dilara

National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar, Pakistan.

Environmental technology 2004 Oct

filter terms:

The sorption behaviour of phosphate on strong basic anion exchanger, Amberlite IRA-400 (SO4(2-) form) is studied as a function of pH (3-11) at two different initial concentration ranges (0.161 - 0.807 mmol l(-1), 3.874 - 6.134 mmol l(-1)) at 25 degrees C. The stiochiometry of the exchange reactions is observed to be dependent upon concentration and pH of the solutions. It is suggested that the sorption of phosphate takes place initially as PO4(3-) followed by HPO4(2-)/H2PO4(-). The data obtained is explained with the help of a modified Langmuir and mass law action equations.

Citation

S Mustafa, A Naeem, N Rehana, A Hamid, B Dilara. Phosphate/sulphate exchange studies on Amberlite IRA-400. Environmental technology. 2004 Oct;25(10):1115-22