to oxide recovery. In most cases, ion exchange is ideal in this duty. 3.1 URANIUM ION EXCHANGE CHEMISTRY In uranium ion exchange, strong base anion resins are normally used. The strong base anionic resin for uranium ion exchange contains quaternary ammonium functional group. The degree and
SEPLITE® resin for Lithium extraction maintains the basic body performance during lithium adsorption. Sunresin’s continuous ion exchange technology can guarantee the stability of the concentration of lithium ions and the ratio of magnesium lithium in the desorption solution
1/07/2011· Ion exchange recovery of zinc is usually carried out on cation exchangers or chelate resins,,,,,,,. In contrast, anion exchangers are not so often used for this purpose,,,probably because of ionic state of zinc in solution. Our previous investigations,were devoted to sorption recovery of zinc from sulfate solutions on porous and non-porous macroreticular cation exchangers as well
Ion exchange resins, that are semi-selective for gold, have been extensively used for gold recovery from cyanide leach processes in the former USSR. Despite forward looking statements by researchers and technology vendors, there have been very few applications in Western plants. Historically, the difference in economic drivers, relative
Hydrometallurgy is a method for obtaining metals from their ores. It is a technique within the field of extractive metallurgy involving the use of aqueous chemistry for the recovery of metals from ores, concentrates, and recycled or residual materials. Metal chemical processing techniques that complement hydrometallurgy are pyrometallurgy, vapour metallurgy and molten salt electrometallurgy.
RECOVERY OF PHOSPHATE FROM SEWAGE SLUDGE AND SEPARATION OF METALS BY ION EXCHANGE Erik Levlin Land and Water Resources Engineering, Royal Institute of Technology, S-100 44 Stockholm, Sweden Abstract Ion exchange can be used to separate phosphorus from iron when phosphorus is recovered from sewage sludge. A review of the use of ion exchange for
In this paper one strong acidic, one strong basic and one weak basic ion-exchange resins, considered as exhausted in an industrial demineralizing plant, are screened for gold recovery from cyanide
This review evaluates the present state of urine treatment and resource recovery using struvite precipitation, ion exchange with zeolites and adsorption processes. The evaluation of these
noted that ion exchangers produced by Purolite Com-pany for the first time were used for recovery of plati-num group metals. However, these ion exchangers were successfully applied in our previous investigations on sorption recovery of gold and silver . Before sorption all the ion
3/06/2015· At first, we have investigated the Cr(VI) recovery from its individual solutions in dependence on acidity of contacting solution. The results are summarized in Table 3.It can be seen from the data that ion exchangers with LCA possess higher sorption ability compared to
ION EXCHANGE NUTRIENT RECOVERY FROM MUNICIPAL WASTEWATER Allen T. Williams Marquette University, 2013 Nitrogen and phosphorus discharge is regulated due to eutrophication. Typically ammonium-nitrogen is removed through nitrification which requires energy and phosphorus (P) is removed by metal salt addition to precipitate P. A more sustainable approach may be to implement nutrient recovery
COMPARISON OF GOLD -SELECTIVE ION EXCHANGE RESINS AND ACTIVATED CARBON FOR THE RECOVERY OF GOLD FROM COPPERGOLD LEACH LIQUORS By 1Johanna van Deventer, 2Volha Bazhko and 2Volha Yahorava 1Purolite, South Africa 2Mintek, South Africa Presenter and Corresponding Author
14/12/2015· Regeneration of the ion- exchange resin is the procedure for recovering the ion-exchange capabilities of exhausted ion-exchange resins. Most ion-exchange resins are used in columns. Ion-exchange operation is basically discontinuous: a loading phase, called service run, is followed by regeneration of the exhausted resins (Calmon 1986).Regeneration ratio is
Removal and Recovery of Nutrients by Ion Exchange from Water and Wastewater By Monami Das Gupta A thesis submitted to fulfilment of the requirements for the degree of Master of Engineering University of Technology, Sydney Faculty of Engineering June, 2011
Ion Exchange • Physical/chemical removal process that can concentrate targeted phosphate anions onto exchange media • Transfer of ions from solid surface (media) for similarly charged ions in solution (wastewater) • Reversible process • Synthetic and natural ion exchange medias available hitachi-hitec
Rohm and Haas Ion Exchange Ion exchange introduction 1 FD Sep 2008 ION EXCHANGE FOR DUMMIES An introduction Water Water is a liquid. Water is made of water molecules (formula H2O). All natural waters contain some foreign substances, usually in small amounts.
Ion Exchange Technique for Gallium Recovery from Bayer Liquor in the Alumina Industry. Sunresin is an experienced solution provider for Ga recovery from Bayer liquor in the Alumina industry. As the key resin supplier, Sunresin provides the market with high performance resins selective for Gallium. Products for both processes, acid and alkali
27/01/2016· Ion exchange is a water treatment process commonly used for water softening or demineralization, but it also is used to remove other substances from the water in processes such as dealkalization, deionization, and disinfection.. But what exactly is it? Ion exchange describes a specific chemical process in which unwanted dissolved ions are exchanged for other ions with
Purolite Ion Exchange Resins for Metals Recovery Applications (cont’d) Uranium The majority of uranium operations employ ion exchange to recover the metal from either acidic or alkaline liquors and pulps. Purolite’s specially tailored resins ensure high uranium capacity, whilst also ensuring fast kinetics and ease of elution.
Ions (e.g. lithium) can be removed or recovered from brines containing those ions and optionally one or more other ions (e.g. other alkali metal ions) by the use of a temperature-swing, ion-exchange process and apparatus employing an ion-exchange material. The process and apparatus depends on a change in the selectivity coefficient of an ion exchange material for
Ions (e.g. lithium) can be removed or recovered from brines containing those ions and optionally one or more other ions (e.g. other alkali metal ions) by the use of a temperature-swing, ion-exchange process and apparatus employing an ion-exchange material. The process and apparatus depends on a change in the selectivity coefficient of an ion exchange material for the ions desired to be
Other topics include the separation of amino acids by ion exchange chromatography; sugar refining and by-product recovery; and ion exchange recovery of alkaloids. This publication is a good reference for chemists and students interested in ion exchange.
A Study of Ion-Exchange Chromatography in an Expanded Braz. Arch. Biol. Technol. v.52 n.2: pp. 427-436, Mar/Apr 2009 429 acceleration; ρP, ρL and µ are particle and liquid specific mass and liquid viscosity, respectively.
Start studying 6.4 Ion Exchange & Precious Metals Recovery B/A PC. Learn vocabulary, terms, and more with flashcards, games, and other study tools.
The application of macroporous strong base resins to cyanide recovery from synthetic solutions containing ferrous cyanide, nickel cyanide and high levels of copper cyanide is discussed. Adsorption experiments show that strong base resins readily extract metal cyanocomplexes, in a sequence of
An ion-exchange resin or ion-exchange polymer is a resin or polymer that acts as a medium for ion exchange. It is an insoluble matrix (or support structure) normally in the form of small (0.25–0.5 mm radius) microbeads, usually white or yellowish, fabricated from an organic polymer substrate.
Method of ion exchange cobalt recovery. Raffinate including cobalt, zinc, copper, nickel and ferric iron is produced. In the raffinate, the pH is raised, the solids are removed and ferric iron is reduced. A copper recovery ion exchange unit is loaded with ion exchange resin selective for copper. Raffinate is fed into the copper recovery ion exchange unit which is regenerated to recover
Ion Exchange (IX) is a method of removing undesirable metallic salt ions from water by exchanging them with other ions attached to a media or resin. This chemical process occurs because ions have differing affinities for the resin and these ions will replace ions with less attraction as they flow over the media.
Demineralisation & Purification for the Gelatin Industry. ADAMELIA designs and manufactures equipment for the demineralisation of gelatin liquors during production, by means of Ion Exchange technology and has achieved considerable success in improving the profitability of companies, which have adopted our processes.
Ion exchange (IX) is a proven and cost-effective technology for removing inorganic contaminants. Evoqua‘s WWIX service utilizes ion exchange resins and other media selected to remove specific ionic contaminants from groundwater, industrial wastewater, and process water for recycle.