Mostafa H. Mahmoud

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Solvent extraction of rhodium(III) and platinum(IV) in 2 M hydrochloric acid with tri-octyl phosphine oxide (TOPO) was found to be substantially changed after addition of aluminium chloride to the aqueous solution. The extraction of the two metal ions was as low as 45 and 22 %, respectively, in absence of AlCl3. Rh(III) extraction drastically increased with(More)
The effect of surface-active agents (surfactants), as additives, on the crystallization of gypsum was studied under conditions of the simulated dihydrate process of phosphoric acid production. Calcium hydrogen phosphate and sulfuric acid were mixed with dilute phosphoric acid at 80 degrees C, and the turbidity of the reaction mixture was measured at(More)
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