Fouling control on microfiltration/ultrafiltration ...

Before scanning, the membrane sample will be coated with a material such as gold, gold–platinum, gold–palladium, chromium, or iridium. The coating layer thickness may vary from 2 to 5 nm, and the metal used will affect the structure of the coating. Samples with an extremely thin layer of coating can be imaged at moderately high magnification.

Concentration - Ultrafiltration / Diafiltration in ...

Concentration – Ultrafiltration / Diafiltration. Ultrafiltration (UF) and diafiltration (DF) are commonly used steps in downstream processing for product concentration and buffer exchange. A typical biopharmaceutical process uses three chromatographic column steps, each preceded by UF / …

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Extraction, separation and recovery of palladium and ...

Jan 20, 2014· Read "Extraction, separation and recovery of palladium and platinum by a kinetic method combined with ultrafiltration, Colloids and Surfaces A: Physicochemical and Engineering Aspects" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

Resource Finder | Dow Water & Process Solutions

Resource Finder Search, browse and filter through our resources. Show all Buildings & Institutions Chemical & Petrochemical Food & Beverage Microelectronics Mining & Hydrometallurgy Municipal Oil & Gas Pharmaceutical Power Generation Residential Sweeteners & Sugars Textiles

QCRO QCUF — WaterGroup

Quick Change Ultra Filtration (QCUF) The Aqua Flo Platinum QCRO and QCUF Systems can be configured to meet your specific requirements. Ten interchangeable filters offer a variety of treatment options that can be tailored to local water conditions, so your water is the best it can be.

Journal Archive - Johnson Matthey Technology Review

Thin metal films, especially those of the platinum group metals, are of interest to the semiconductor industry and to material engineering. They can be used, for instance, in optics, in optoelectronics, in the processes of micro- and ultrafiltration, as electrodes and as anticorrosion layers, and as the catalytic materials in chemical sensors (). ...

Platinum Group Metals (PGM) | Water Solutions

Separation of Platinum Group Metals (PGM) from Liquid Media. Acidic Halogen Leach. Many mining projects are underway in which ores are leached under oxidizing and acidic conditions. Under these conditions, DOWEX™ Anion Exchange Resins have proven to be tough, steady performers.

Adsorption kinetics of platinum group elements onto ...

Abstract. Adsorption kinetics of the interaction between Pt, Pd and Rh (defined here as platinum group elements, PGEs) ions and macromolecular organic compounds (MOCs, >10 kDa), including humic acid, carrageenan and bovine serum albumin, and different cutoff fractions of natural organic matter (>1 kDa and >3 kDa) obtained from seawater using centrifugal ultrafiltration devices were investigated.

Nephrology | Northwell Health

Learn about the Division of Nephrology at Northwell Health. The Division of Nephrology works at the forefront of kidney disease management with a faculty devoted to dynamic patient care.

Micellar-enhanced ultrafiltration of gold(III) with ...

3. Results and discussion 3.1. Micellar-enhanced ultrafiltration of gold(Ill) Fig. 1 shows typical results for the MEUF of Au(III) as a plot of the percent rejection of Au(III) versus the permeate volume, where we used PONPE10 as the nonionic surfactant and memb 1 as the UF membrane having the MWCO of 3000.

Lipoplatin - Wikipedia

Lipoplatin (Liposomal cisplatin) is a nanoparticle of 110 nm average diameter composed of lipids and cisplatin. This new drug has successfully finished Phase I, Phase II, and Phase III human clinical trials. It has shown superiority to cisplatin in combination with paclitaxel as a chemotherapy regimen in non-small cell lung cancer (NSCLC) adenocarcinomas

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The use of a cationic surfactant for micellar-enhanced ultrafiltration of platinum group metal anions By Gwicana S., Vorster N. and Jacobs E. No static citation data No static citation data Cite

The use of a cationic surfactant for micellar ... - DeepDyve

Nov 20, 2006· Read "The use of a cationic surfactant for micellar-enhanced ultrafiltration of platinum group metal anions, Desalination" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

Research - Texas A&M University

Our research on primary atmospheric particulate matter (PM 2.5 and PM 10) includes: Trace metals measurement. We have pioneered digestion and ICP-MS methods for lanthanoids (rare earth elements), platinum group elements (Rh, Pd, and Pt), and a host of other representative and transition metals present in urban particulate matter in the USA.

Drinking Water Systems — WaterGroup

Aqua Flo Platinum Quick Change Reverse Osmosis (QCRO) and Quick Change Ultra Filtration (QCUF) Systems. The Aqua Flo Platinum QCRO and QCUF Systems can be configured to meet your specific requirements. There are ten interchangeable filters with a variety of treatment options that can be tailored to local water conditions, so your water is the ...

Platinum (Pt) - Chemical properties, Health and ...

Platinum is a lustrous silvery-white, malleable, ductile metal and a member of group 10 of the periodic table of the elements. It has the third highest density, behind osmium and iridium. Platinum is unaffected by air and water, but will dissolve in hot aqua regia, in hot

LEWATIT® MonoPlus TP 214 - Liquid Purification Technologies

Lewatit® MonoPlus TP 214 is a macroporous resin with chelating thiourea groups designed for the selective removal of mercury, precious metals of the platinum group, gold and silver. Cations are removed from neutral solutions in the following order (decreasing affinity): Hg 2 + > Ag' > Air/3+p> > C u 2+ > pb2/4+ > Bit' > Sn 2 + Zn 2 + > Cd 2 ...

Original Research Separation of Anionic Surfactants in a ...

Ultrafiltration – Ion Exchange Purification System Izabela Kowalska* ... A standard platinum–iridium ring with radius of 9.6 mm and wire diameter of 0.2 mm was used in this method. Surface tension data were recorded as the aver- ... Resin Type Structure Functional group Particle size, mm Ion-exchange capacity*, mmol/cm3

James Englehardt » Faculty Directory - UM COE

Dr. James Englehardt, P.E., is Professor of Environmental Engineering at the University of Miami, appointed 1992. Before receiving his Ph.D. from the University of California, Davis, Dr. Englehardt led filtration research projects for the Johns Manville Corporation (1983-1987), and supervised water treatment laboratory development and field service for the Western Filter Company (now GE Water ...

Enhanced release of palladium and platinum from catalytic ...

Platinum group elements ... Even though ultrafiltration and ultracentrifugation results did not rule out the presence of Pd- or Pt-bearing colloids <1–2 nm, the predictive utility of complexation chemistry implies that it plays a dominant role in Pd and Pt release from solid materials.

STUDY AND SEPARATION OF RUTHENIUM AND ... - osti.gov

A process is claimed for the separation or purification of ruthenium from solutions thereof comprising conversion of the ruthenium to nitrosylruthenium complex with the ruthenium in the Ru/sup +2/ oxidation state; conversion of the nitrosylruthenium complex to a nitrosylruthenium chlorocomplex and any other platinum group metals to ...

How Whey Protein is Made: Microfiltration, Ultrafiltration ...

Whey Protein Processing Methods Microfiltration vs. Ultrafiltration (part 2) So in part 1, we looked at ion exchange processing of whey protein. The other type of processing method involves microfiltration and ultrafiltration.

Platinum Group Metals | Dow Water & Process Solutions

PLATINUM GROUP METALS. Platinum Group Metals (PGM) are rare, chemically-resistant metals, valued for their usefulness in applications ranging from organic reaction catalysts, to fine jewelry, to microelectronics. PGMs include elements such as platinum, …

Nanofiltration Mediated by Surfactant Micelles: Micellar ...

Surfactant micelle-assisted removal of ions and organic solutes from aqueous media by micellar enhanced ultrafiltration (MEUF), which is a membrane separation technique, is discussed in detail. Following general information about micellar structure, counterion binding, substrate solubilization, and medium effect functions of micelles which enable separation of cationic or anionic ions and ...

Removal of arsenic from water by combination of electro ...

Removal of Arsenic from Water by Combination of Electro-Oxidation and Polymer Enhanced Ultrafiltration Ozgur Arar,a Nalan Kabay,a Julio S anchez,b Bernabe L. Rivas,b Marek Bryjak,c and Carlos Pe~nad a Chemical Engineering Department, Faculty of Engineering, Ege University, Izmir 35100 Turkey b Polymer Department, Faculty of Chemistry, University of Concepcion, Casilla 160-C, …

Aerosols & Water Treatment Lab – Dr. Chellam's Research ...

We investigate bacteria and virus removal by microfiltration or ultrafiltration. MF/UF are also being used as pretreatment to reduce fouling of higher-pressure membranes (i.e. nanofiltration and reverse osmosis) in integrated membrane systems. ... and platinum group elements in PM 2.5 and PM 10 including the use of a collision cell. We also ...

Platinum Group Metals (PGM) | DuPont

Technetium (particularly Tc 7+), ruthenium (particularly Ru 4+), rhodium (particularly Rh 4+ and Rh 3+), rhenium (particularly Re 7+), and iridium (particularly Ir 4+ and Ir 3+) can be ionically grouped with the Platinum Group Metals (PGM) because they form stable oxyanion complexes

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