The paper reveals that the permeate quality of seawater reverse osmosis SWRO plants is suitable neither for drinking water nor for irrigation purposes. Thus, treatments must be adjusted to decrease boron concentration and post-treatments are required to improve water mineralization in order to correct its corrosiveness. Several chemical strategies were...
In water treatment, silica is a problem because of its tendency to form deposits. It is often necessary to include reducing silica concentration to permit increased cycles of concentration without scale. Silica that exists in water in equilibrium with ion silicate can be removed by strong base anion-exchange resins operated...
This work reveals that biologically treated textile wastewaters were subjected to ozonation as a pre-treatment stage to NF. The aim was to reduce organic matter in order to prevent membranes from fouling and to oxidize organic wastewater compounds that could damage the membrane material. NF experiments were carried out in...
A mathematical model has been developed to simulate the performance of an integrated extraction-stripping process based on the use of hollow fiber contactors. The model allows one to predict the time-dependent concentration profiles of the two phases involved in an individual extraction or stripping process, or of the three phases...
The observed values of specific conductance of different uni-univalent and uni-bivalent electrolytes were measured with the uptake side, discharge side and across the pericardial membrane in an experimental setup developed in the laboratory. The values of specific conductance K were found to be increased with the increase in concentration of...
Utilizing suitable methods for treatment of seawater results in effective improvement in water shortage. In this research, a very small experimental electrodialysis cell has been designed and built to study the effects of different operating conditions such as flow rate, voltage and concentration, on treatment of seawater with electrodialysis have...
The possibility of concentration of the heavy metals using cobalt as an example has been studied. It has been actualized in the membrane reactor at a combination of sorption onto the clay mineral or a cation-exchange resin and the following pressure-driven membrane separation of a mixture. The retention coefficient of...
In this work a study of asymmetric polymeric membranes synthesis was made for color and turbidity removal of an industrial textile effluent, which was previously treated by a biological treatment. A 23 factorial planning was carried out using two levels (- and +), together with the factors: polymer type (polysulfone...
Information on the 20 Winners Available at www.semiconductor.net/awards OAK BROOK, Ill. -- Semiconductor International bestowed its 2008 Editors' Choice Awards for excellence in semiconductor manufacturing on 20 commercially proven industry products (www.semiconductor.net/awards). These awards will be presented at a ceremony in San Francisco on Wednesday,...
SAN ANTONIO -- As the first anniversary of Hurricane Katrina nears, clinical experts at Harcourt Assessment, Inc., a leading test developer and publisher, and associated psychologists suggest increasing awareness and identification of signs of Posttraumatic Stress Disorder PTSD in children and youth, and quickly assessing the treatable...
Cincinnati --Federated Department Stores, Inc. has elected Karen Hoguet, previously senior vice president and chief financial officer, to serve as executive vice president and chief financial officer, effective June 1. Concurrently, Ronald Tysoe, who had planned to retire as Federated's vice chairman, real...
New York --George Kovacs is expanding his design reach into the broad range of home furnishings, including home textiles. Kovac lighting is being marketed by The Minka Group allowing Kovacs the opportunity to move beyond lighting. "I...
WESTWOOD, Mass. -- Product Interoperability Highlighted Between Security, Network, Infrastructure and Application Systems Network IntelligenceTM Corp., the market-proven leader in transforming enterprise-wide data into compliance and security information, today announced that Michael Ghelli, director of professional services & education, will present "How to Create a...
New York -- Nautica has doubled its bath offerings in its branded line with 10 new fully coordinated patterns featuring bath accessories and towels -- now more of a concentration at the company. A new merchandising strategy that ties back to collection...
Business Editors/Health/Medical Writers BIOWIRE2K SAN LEANDRO, Calif.--BUSINESS WIRE--Nov. 11, 2003 New Sample/Plate Management Solution Based on MDLR IsentrisTM Architecture Helps Researchers Generate Leads More Efficiently and Cost Effectively MDL Information Systems, Inc. MDL, part of...
Business Editors/High-Tech Writers SAN JOSE, Calif.--BUSINESS WIRE--Oct. 14, 2003 Evolving from the typical gatherings that discuss only MEMS technology, the first annual In-Stat/MDR (http://www.instat.com) MEMS Executive Forum -- Distilling the Future, moved toward a highly interactive, networking-oriented format yesterday, that discussed the necessities...
Byline: CAROL KROL Despite the promises of reaching more customers online and providing marketers with cost-effective alternatives to direct mail, the practice of appending e-mail addresses to existing databases of customer information has not caught on. A variety of reasons...
Big media barons are routinely accused of dominating markets, dumbing down the news to plump up the bottom line, and forcing U.S. content on world audiences. But these companies are not as big, bad, dominant, or American as critics claim. And company size is...
Business Editors SAN FRANCISCO--BUSINESS WIRE--Jan. 10, 2002 Enhanced Liquidity and a Wider Range of Products and Services Will Increase Value of E-commerce for Global Buyers and Sellers of Chemicals and Plastics ChemConnect Inc., which operates the leading...
The Industry Standard, which rose to such heights during the dot-com boom, came crashing down last week. It was the latest setback in what has been a calamitous year for business publishers. Last Thursday, the three-year-old weekly suspended publication, effective...
Articles 2001-08-20
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