Metal ions

A review with more than 60 references covering macrocycle and macromolecular compounds, i.e. crown ethers, ionizable lariat ethers, calixarenes, calix crowns, as well as macrocycle polymers (for example, cyclodextrins), and macromolecular compounds, i.e. acyclic polyethers used as ion carriers in tr

Surface modification of clays has become increasingly important due to the practical applications of clays such as fillers and adsorbents. The surface modification of sepiolite with [3-(2-aminoethylamino)propyl]trimethoxysilane has been employed. The modified sepiolite surface was investigated by FT

High efficiency activated carbon with different chemical characteristics, appropriate for the purification of waste and potable water with different pollutions (metal ions) was prepared. It was established that activated carbon is obtained from carbonized olive stones in presence of nitrogen in the

This study gathers experimental results that illustrate the efficiency of ultrafiltration in the purification of aqueous solutions of metal ions beforehand complexed on water-soluble macromolecular substrate. For this purpose, a commercial polyethersulfone ultrafiltration membrane is employed in a m