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Showing 1 to 16 of 16 for “"anion exchange resin"”.
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Part One: Catalytic Reactions of Anion-Exchange Resin Bound Dodecarhodium Triacontacarbonyl Dianion and Its Derivatives and Part Two: Properties and Reactions of Neutral Non-Polar Solvent Soluble Binuclear Complexes
The resin support was the Dowes 1-X8 anion exchange resin in the chloride form. Exchange of the cluster at room temperature under an inert atmosphere leads to intact Rh(,12) (CO)(,30)('2-) being bound. This material exhibits only limited activity for the hydroformylation of of 1-hexene, accompanied …
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An investigation on the removal of escherichia coli by ion exchange resins
… to evaluate the ability of typical cation and anion exchange resins to remove Escherichia coli from water. The objective was to obtain a method of purifying slightly polluted, private well water supplies. The investigation consisted of passing water samples, inoculated with known concentrations …
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Removal of selected water disinfection byproducts, and MTBE in batch and continuous flow systems using alternative sorbents.
… Amberlite® XAD-16, a weakly basic anion exchange resin, Amberjet®, a strongly basic anion exchange resin, and granular activated carbon (GAC). Batch experiments were conducted on spiked Milli-Q® and lake water matrices. Results indicate considerable sorption of TCE (68.9%), slight …
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Resin-based method for concentration of enteric viruses and F-RNA coliphages from water samples
… of water microbiological safety. Here, a resin-based virus concentration method was developed and tested. The method is based on adsorption of the viruses to an anion exchange resin dispersed in the water sample, followed by direct isolation of nucleic acids from the resin to provide a …
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Determination of hydrogen peroxide using immobilized chemiluminescence reagents and flow injection analysis
… membranes. Luminol was immobilized on to an anion exchange resin and packed in a column. When used in the FIA mode, stoichiometric amounts of luminol could be released from the column by injecting another anion with higher affinity towards the resin. The pH downstream of the column could also …
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A soluble mannan from ripe banana fruit
… removal of most of the pectin via treatment with anion exchange resin, the major hemicellulose component was isolated by gel filtration. The isolated hemicellulose was a homomannan as demonstrated by gas chromatography and high performance liquid chromatography of acid hydrolysates. The banana …
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Chromatographic Separation of Carbohydrates
… reported. The general performance of zeolites, anion and cation exchange resins for the separation of carbohydrate mixtures using batch analytical techniques have been evaluated. A Semi-Continuous Counter-current Chromatographic Refiner (SCCR4) unit which has twelve 25.4 mm internal diameter …
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Regulation of Volatile Fatty Acid Synthesis in Megasphaera Elsdenii and Hexanoic Acid Utilisation by Pseudomonas Putida
… recovery of the products by adsorption to anion exchange resins. Initially, Amberlite IRA-93 (weak base anion-exchange resin) and Amberlite IRA-400 (strong base anion-exchange resin) resins were tested for their ability to adsorb and desorb butyric and hexanoic acids from water and …
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Chloramine and MIEX control of disinfection by-products formed from an alluvial aquifer water source
… Distribution System (SDS) tests. Magnetic Ion Exchange Resin, namely MIEX[copyright]DOC, is a strong-base anion exchange resin containing quaternary amine functional groups that serve for anion exchange. Its small size, macroporous structure, and innovative integration of iron oxide allow it to …
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Antimony isotopes as indicators of redox reactions in aqueous systems: fractionation during Sb(V) reduction by sulfide and isotope exchange kinetics between dissolved Sb(III) and Sb(V)
… in environmentally relevant reactions. We use anion exchange resin and hydride generation MC-ICP-MS methods to obtain precise measurements of 123Sb/121Sb. The anion exchange method is also effective for separating Sb(III) from Sb(V). First, we find that isotopic exchange between aqueous Sb(V) …
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The recovery of acetic acid from wastes of tanning extract manufacture
… the wastes of tannin extract manufacture. An ion exchange process was given primary consideration to accomplish the recovery by adsorption of the acetic acid from the waste liquor with subsequent elution of the acid from the ion exchange material by use of stronger acid. Tests were conducted using …
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FLOW INJECTION TECHNIQUES FOR INVESTIGATING THE BIOGEOCHEMISTRY OF NUTRIENTS IN NATURAL WATERS
… stream and two micro-columns (an iminodiacetate resin to mask trace metals and a strong anion exchange resin to mask phosphate) is described. The figures of merit at 60 °C were a practical limit of detection of 1 0 µg Si Lˉ¹ , a linear range of 10 - 1000 µg Si Lˉ¹ and typical RSD of 1.5%. The …
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Exploration of the thiosulphate process for the dissolution of gold from electronic waste and its recovery through ion-exchange
… system. Gold recovery using ion-exchange processes was investigated with the use of a medium-base (AuRIX®100) and two strong-base anion exchange resins (Purogold™ MTA5013SO4 and MTA5011SO4). The AuRIX®100 resin was specifically developed for and is currently used in the …
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Speciation Analysis of Arsenic and Selenium by HPLC and Mass Spectrometry
… to be the use of a Hamilton PRP X100 12-20 µm anion-exchange resin with column dimensions of 100 x 3 mm. The mobile phase utilized a 10 mM K2S04 solution at pH 10.2 with a flow rate of 1 ml minˉ¹ and a sample injection loop of 100 µ1. Total analysis time was under 7 minutes with limits of …
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Remediation of per and polyfluoroalkyl substances by pilot-scale applications of advanced water treatment technologies
… including granular activated carbon (GAC), anion exchange resin (AER), nanofiltration (NF), reverse osmosis (RO), and UV-sulfite has been demonstrated in bench-scale laboratory studies, little information is available on the treatment performance of these technologies at the full-scale. The …
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Sulfate removal from water produced during CO2 enhanced oil recovery, coal-bed methane recovery, and mining operations using anion exchange resins
… mining operations in the Illinois Basin using anion exchange resins. Equilibrium batch studies were conducted to compare commercially available strong base and weak base anion exchange resins of different type. Our results indicate that for optimal sulfate removal in high chloride solutions, …