The conventional practice of using 0.45 or 0.40 microm membranes to distinguish between the particulate and dissolved phases in natural waters neglects the importance of colloids. Many of the colloids in natural waters pass through 0.45 or 0.40 microm membranes, but a significant fraction at the upper end of the colloidal particle size range is retained. Membrane clogging during filtration decr...

Membrane filtration can be used in the pulp and paper industry to recover material as well as prevent waste by-products from entering the water course. In addition, depending on the application, membrane systems can be used to remove impurities or to concentrate and purify, either as an aid to recovering valuable raw material or to improve product yields. With increasingly strict legislation on...

NF/RO membrane filtration processes have been recognized as an important technology to facilitate water recycling. Those processes are well-proven technologies, which can be used to remove a wide range of contaminants including trace contaminants that are of particular concern in water recycling. However, risk implications in association with brine or concentrate and membrane cleaning wastewate...

NanomaterialZinc oxide (ZnO) has been synthesized using Zinc Nitrate Hexahydrate as precursor by Sonochemical Method. The as-synthesized ZnO was characterized to study their optical, morphological and physical properties. Fourier Transform-Infra Red Spectroscopy analysis was done for identification of functional group, Scanning Electron MicroscopyEnergy Dispersive X-Ray Analysis for Morphology ...

New isoporous nanofiltration composite membranes were fabricated by photo-polymerization of thin films the hexagonal columnar mesophase supramolecular complex 43TB. This was followed deposition on a polyether sulfone macro-porous support and removal template molecule. The had an average permeability 2.3 L m-2 h-1·bar-1 sharp molecular weight cut-off around 5000 g mol-1 based PEG filtration. ful...