Membrane separation technology

Practical appHcations have been reported for PVP/ceUulosics (108,119,120) and PVP/polysulfones (121,122) in membrane separation technology, eg, in the manufacture of dialysis membranes. Electrically conductive polymers of polyaruline are rendered more soluble and hence easier to process by complexation with PVP (123). Addition of small amounts of PVP to nylon 66 and 610 causes significant morphological changes, resulting in fewer but more regular spherulites (124). 

S. Kimura. New trends of membrane separation technology. Makromol Chem Macrom Symp 70-71 291, 1993. 

Nobel RD, Stem SA. Membrane Separation. Technology Principles and Applications, Elsevier, New York, 1995. 

BELFORT, G. In Advanced Biochemical Engineering, BUNGAY, H. R. and BELFORT, G. (eds.) (John Wiley, New York, 1987). Membrane Separation Technology An Overview. 

Thermex is a commercially available ex situ technology that is based on the use of membrane separation technology for preconcentrating plant radioactive wastewater and evaporation for drying the preconcentrates. The technology is designed to minimize the volume of waste that would require storage or disposal. 

D17920Y, Membrane Separation Technology News, 1992 D199148, U.S. DOE, 1999... 

AQUATECH Systems is a state-of-the-art bipolar membrane separation technology which exemplifies "pollution prevention" technology rather than "end of the pipe" regulation compliance. Consistent with SARA s definition of treatment, AQUATECH Systems is a technology "that in whole or in part will result in a permanent and significant decrease in the toxicity, morbidity or volume" of a hazardous waste material. 

Membrane separation technologies cannot make the contaminants disappear however, they are extremely effective at concentrating the contaminants or "dewateri.ng" the stream in a pretreatment phase. 

This paper emphasizes the "point-of-source" concept of recycling or recovering specific components for re-use through the application of membrane separation technologies. 

Membrane separation technologies offer the following advantages over competing processes ... 

Although membrane separation technologies have found applications in a number of specific areas, the potential for these unique processes has not yet begun to be tapped. 

Because most industrial effluent streams contain a multitude of contaminants in many different forms, the greatest potential for membrane separation technologies is in combination with such other technologies as ion exchange, activated carbon adsorption, anaerobic digestion, etc. 

Sec also Centrifugation Classifying (Process) Electrostatic Precipitator and Membrane Separations Technology. 

The range of small panicles, molecules, and ions dealt with hy membrane separation technology, particularly as encountered in the biochemical field are as follows. 

See also Desalination and Membrane Separations Technology. Additional Reading... 

ULTRAFILTRATION. Ultrafiltration is a pressure-driven filtration separation occurring on a molecular scale. See also Dialysis Filtration Hollow-Fiber Membranes Membrane Separations Technology and Reverse Osmosis. Typically, a liquid including small dissolved molecules is forced through a porous membrane. Large dissolved molecules, colloids, and suspended solids that cannot pass through the pores are retained,... 

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