الفهرس 
Literature ReviewOnly 14 pages are availabe for public view
 |  | from | 241 |  |  |
| | | from | 241 | | |
Abstract
Aluminum(III) were removed from aqueous solutions using powdred marble wastes (PMW) and modified powdered activated carbon (PAC) which prepared from olive stones and modified with aqueous oxidizing agent (HNO3) as sorbents in the sorption and the sorptiveflotation process. Also, Al(III) ions were removed by precipitate flotation using carbonates as precipitating compound and oleic acid (HOL) as a surfactant. At optimum conditions, the separation of Al(III) ions ~100% at pH7. The removal of toxic copper(II) from aqueous solutions was investigated by sorption and sorptiveflotation, using powdered marble wastes (PMW), as an inexpensive and widely spread over the globe, and an effective inorganic sorbent. Cu(II) ions were also be separated by precipitate and ion flotation by using carbonates as a precipitating agent and triethanol amine (TEA) as chelating agent, respectively, in the presence of oleic acid (HOL) as a surfactant. Lead(II) was removed by sorption and sorptiveflotation techniques using modified powdered activated carbon (PACI), prepared from olive stones and modified with aqueous oxidizing agent ((NH4)2S2O8) as sorbent. It was also removed by ion flotation technique using diphenylcarbazone (DPC). The main parameters (i.e. initial solution pH, sorbent and lead concentrations, surfactant concentration, stirring times, temperature and foreign ions) influence the sorption and flotation processes were examined. These procedure were applied to recover lead ions quantitatively (under the recommended conditions) from aqueous solutions and some natural water samples.