Purification

The removal of binary mixed metal ions [Hg(II), Pb(II), Cu(II) and Cr(III)] from water was investigated. Two different sewage sludge-based adsorbents were produced and used for this purpose: PS, obtained by pyrolysis of sewage sludge, and AS, by ZnCl2 chemical activation of sewage sludge followed by

A pre-industrial scale experimentation aimed at the demonstration of a system for purification and reuse of wastewater from an industrial laundry was carried out by means of a prototype plant installed in situ, fed with 15 m3/h of untreated wastewater. The tested treatment system consisted of: (i) p

Relatively low and frequently changing flow rates and compositions in biohydrogen production require a highly efficient and low energy consuming gas cleaning technology to let this process become a competitive alternative in hydrogen production. Membrane contactors with non-porous polymeric membrane

In the frame of a global process of marginal ores treatment and of the treatment of solid residues containing heavy metals, we can associate the techniques of static solid–liquid extraction to the techniques of static liquid– liquid extraction. The static solid–liquid extraction or leaching is now w

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

In this study an experimental method for purification of a system containing a 30% caprolactam aqueous solution was attempted at room temperature. The impurities in the system were removed by using the continuous electrodeionization (EDI) device, which is an ion-exchange membrane stack with 40 dilut