Silica

The performance of commercially available polymeric and microporoussilicamembranes (both supplied by Sulzer Chemtech GmbH) was investigated with respect to the dehydration of binary mixtures of isopropyl alcohol (IPA...

...of the world, the shortage of good quality feed-water is forcing plant owners either to run their membrane systems with undesirable levels ofsilicaor to restrict recovery rates. Highsilicabrines can cause severe and irreversible membrane fouling. Restricting recovery rates is never a popula...

...(NF), and the interaction between membrane and pollutant in water cleaning-up were studied. The separation efficiency of pollutants likesilica, nitrate, manganese and humic acids (HA) by means of RO and NF membranes (both of spiral wound type, in polyamide) was determined. The interactio...

The feasibility ofsilicaremoval in RO treatment of groundwater from a Western Australian mining and processing operation to prevent scaling and enhance water recovery wa...

...pervaporation setup. Inorganic membranes were synthesized via a two-step sol–gel catalysed process employing tetraethylorthosilicate as thesilicaprecursor. In addition, non-ligand surfactants were embedded and carbonized into thesilicamatrix. Normalsilicamembranes have typica...

...and proton conductivity as sulfuric acid doping agent concentration was increased. The KSiN is unique in term of its miscible hybrid structure ofsilicaparticles modified with Nafion® structured Krytox 157 FSL chain (KSi) and Nafion®. Based on the KSiN membranes with different KSi content, it wa...