Colloidal fouling of reverse osmosis membranes: measurements and fouling mechanisms
Article Abstract:
Colloidal fouling of reverse osmosis (RO) membranes appears to be governed by an interplay between permeation drag and electric double layer repulsion and not by chemical interactions. Results from fouling experiments show that permeation drag controls the rate and extent of colloidal fouling. Membrane surface morphology, however, was also found to have a significant effect on colloidal fouling. The pronounced roughness of the surface of the composite membranes has caused the higher fouling propensity of composite polyamide RO membranes.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1997
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Small is different: shape-, size-, and composition-dependent properties of some colloidal semiconductor nanocrystals
Article Abstract:
Interesting properties in different colloidal semiconductor nanoparticles, such as the electronic relaxation rates as spherical nanoparticles change to nanorods, and the changes in the structure or size of very small nanoparticles upon absorbing strongly bound molecules are described. The difference in the interfacial crossing rates of electrons and holes in a composite Nan structure is explained.
Publication Name: Accounts of Chemical Research
Subject: Science and technology
ISSN: 0001-4842
Year: 2004
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It's a small, small, small, small world
Article Abstract:
Nanotechnology is the science of rearranging atoms and molecules. The technology will lead to the development of stronger, lighter, cheaper cleaner, more accurate and more intelligent products. Theoretical and computational models show that the molecular manufacturing systems needed for the technology do not violate existing physical law and can thus be made.
Publication Name: MIT's Technology Review
Subject: Science and technology
ISSN: 1096-3715
Year: 1997
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