News and Views
Process microfiltration catalogue available
Conference on desalination and water reuse
Gelman Sciences h a s published a 140-page Mlcroflltration Catalogue for the process industries, which Includes c u r r e n t information on the c o m p a n y ' s entire line of process filtration products. It is divided into Pharmaceutical, Microelectronie, Chemical, a n d Food a n d Beverage sections to provide easy access to filter p r o d u c t s for the u s e r ' s specific application. The catalogue includes a section guide outlining the use of Gelman Sciences p r o d u c t s b y application area. Each p r o d u c t section covers depth filters, cartridges, capsules a n d filter housings. Also included in the catalogue is a chemical compatibility chart, providing information on the resistance of filter materials to various chemical solutions. Further Informatlon from: Gelman Sciences, Inc, 600 South Wagner Road, A n n Arbor, M148106, USA. Tel: +1 313 665 0651.
Papers a n d posters are now being invited for presentation at the International Conference on Desalination a n d Water Reuse to be held at Murdoch University, Western Australia, from 1-2 December 1994. The major focus of the event will be the technologies which c a n p r o d u c e water to meet the ever increasing d e m a n d for drinking, industrial a n d agricultural uses. Conference topics will include the following:
T w o e v e n t s for Latin America In August 1994, two events of interest to m e m b r a n e technologists will be held in Rio de Janeiro, Brazil. The 1st Latin American School on Membrane a n d Membrane Processes (I ELAM) will be held from 3-6 August, a n d will cover theoretical a n d applied topics on m e m b r a n e processes a n d preparation. It is designed to offer to a largely industrially linked c o m m u n i t y the opportunity to be trained a n d informed a b o u t state-of-the-art m e m b r a n e technology, in areas of their interest. Several specialists from academia a n d i n d u s t r y have been invited to act as lecturers, a n d a n industrial exhibition is also planned. The 2nd Ibero American Congress on Membrane Science a n d Technology (II CITEM) will be held from 8 - 1 0 August 1994. It will allow researchers from Latin America a n d E u r o p e to present recent scientific results in several a r e a s of m e m b r a n e science a n d technology: reverse osmosis, ultrafiltration, microflltration, electrodialysis, gas separation, pervaporation, v a p o u r permeation, liquid m e m b r a n e s a n d inorganic m e m b r a n e s . The deadline for s u b m i s s i o n of abstracts is 15 May 1994. Further Informatlon from: Dr Crtsttano Piacsek Borges, Programa d e Eng. Qulmlea, COPPE/UFRJ, Calxa Postal 68502, 21945-970 Rio de Janelro, RJ-Brazll. Tel: +55 21 270 2189. Fax: +55 21 290 6626.
M e m b r a n e T e c h n o l o g y No. 4 5
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reverse osmosis;
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electrodialysis a n d ion exchange;
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ultrafiltratlon a n d microflltration;
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developments in m e m b r a n e technology; a n d
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reclamation a n d reuse ofwastewater. Intending a u t h o r s should submit a n abstract of a b o u t 500 words in English b y 15 April 1994. In addition to the conference programme, two pre-conference w o r k s h o p s are planned. A one-day w o r k s h o p on 'Membrane Technology' will be held, as well as a one-day w o r k s h o p on 'On-site Treatment a n d Recycling of Wastewater', involving principles a n d examples of technology available in Australia. Further Informatlon from: Dr Kuruvllla Mathew, Remote Area Developments Group, Instltute f o r Environmental Science, Murdoch University, Murdoch, WA 6150, Australia. Tel: +61 9 3 6 0 2869. Fax: +61 9 310 4997.
Recycling etching solutions With s u p p o r t from the New York State Energy Research a n d Development Authority a n d Merritt Meridian Co of Beacon, New York, Dr William N. Gill, a chemical engineering professor at Rensselaer Polytechnic Institute, is u s i n g reverse osmosis for ultrapurification a n d recycling of microelectronics etching solutions. Gill estimates that more t h a n 20 000 tons of spent etching solutions are generated in the USA annually. He h a s built a prototype RO separation system with thin film composite m e m b r a n e s . These commercially available m e m b r a n e s are highly resistant to hydrogen fluoride (HF). They let I-IF p a s s t h r o u g h while rejecting fluosilicic acid a n d other metals a n d n o n - m e t a l s found in these solutions, s u c h as aluminium, potassium, sodium, boron a n d p h o s p h o r o u s . The resulting pure HF c a n be r e u s e d in the cycle again. The rejection
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