Ion Exchange Method for Removal and Separation …

Ion exchange has been widely applied in technology of chemical separation of noble metal ions. This is associated with …

Wastewater Brine Purification and Recovery through Electrodialysis Ion

Wastewater Brine Purification and Recovery through Electrodialysis Ion Exchange Reutilizing resources onboard the International Space Station (ISS) and for future deep space missions are critical for mission longevity and sustainability. Wastewater brine produced from water recovery systems contain chemical species that could be …

Ion Exchange

Ion exchange is a unit operation in its own right, often sharing theory with adsorption or chromatography, although it has its own special areas of application. The oldest and most enduring application of ion exchange is in water treatment, to soften or demineralise water before industrial use, to recover components from an aqueous effluent ...

A review on lithium recovery using electrochemical

However, a very recent review thoroughly discussed Li recovery by electrochemically switchable ion exchange (ESIX). This paper reviews Li recovery by both charge transfer processes, namely electrodialysis (ED), and electro-sorption …

Enhancing the performance of membrane distillation and ion-exchange

However, in spite of HMO's capacity for selective Li uptake in seawater, this ion exchange adsorption approach is unable to attain economic efficient Li recovery from seawater. One of the primary reasons for this is the low concentration range of Li (0.14–0.19 mg/L) in seawater.

Ion Exchange & Water Demineralization Handbook | Veolia

Ion exchange systems are used for efficient removal of dissolved ions from water. Ion exchangers exchange one ion for another, hold it temporarily, and then release it to a regenerant solution. In an ion exchange system, undesirable ions in the water supply are replaced with more acceptable ions.

Zbasic: A Purification Tag for Selective Ion-Exchange Recovery

Abstract. A positively charged protein domain, denoted Z basic, can be used as a general purification tag for purification of recombinantly produced target proteins by cation-exchange chromatography. The Z basic domain is constructed from the Protein A-derived Z-domain, and engineered to be highly charged, which allows selective capture …

Ion-Exchange Recovery of Nickel(II) and Cobalt(II) from …

recovery of nickel(II) and cobalt(II) ions from sulfuric acid solutions on a number of ion exchangers of CYBBER brand, which are new domestic sorbents. Previously, these ion exchangers have been well proven in recovery of platinum(II, IV) in the presence of iron(III) from chloride solutions [11]. The results obtained in a study

Ion Exchange Methodology

Ion Exchange Methodology. In order for electrostatic retention to occur, both analyte and sorbent functional groups must be in their ionizedIon Exchange Methodology form. This is done through strict pH control of the sample matrix. For basic analytes, the pH should be adjusted to at least 2 pH units below the molecule's pKa.

ION EXCHANGE

Ion exchange has found widespread use in the recovery of metals from mineral leach solutions and from secondary waste solutions. The most important application is the recovery of uranium from low-level ore bodies in the mineral deposits of Australia, Canada, South Africa and the USA.

Ion exchange recovery and concentration of rhenium …

The final content was 26.1–27.3 g/l and 0.35–0.41 g/l for Re and Mo, respectively. Rhenium was concentrated on the second step up to 18–19 times and in comparison with the initial solutions—up to 366–380 times. The pure perrhenate ammonium salt was recovered from the second eluate by crystallization.

Ion exchange recovery of silver from concentrated base metal-chloride

The recovery yield was approximately 40% or higher with five materials, including two weak anion exchangers (WP-1, Purolite A830), one chelating resin (Dowex M4195) and both activated carbons (Norit pk 1-3, Univar). For the five abovementioned promising. Conclusions. The recovery of silver from concentrated base metal …

Recovery of gold from chloride solution with ion exchange …

The extraction of gold from chloride solutions by ion exchange is examined. It is shown that at initial gold concentrations between 1-5 ppm, 20 g/l Cl - and pH 5, the kinetics of loading on weak base resins are slightly slower than those observed with activated charcoal. Equilibrium loading of auric chloride varies considerably as a function of ...

Metals Removal and Recovery | Purolite |

Metals Removal and Recovery Products. Cation, anion and chelating ion exchange resins can be used to remove metals for recovery and reuse or for removal and disposal. Our metals removal and recovery product lines are extensive and address many applications in the metals processing industries. Typical metals removal and recovery …

(PDF) Ion exchange recovery of silver from …

Ion exchange has not been extensively studied nor industrially used for recovering small amounts of silver from concentrated base metal-chloride solutions. A novel multistep process utilizing a ...

(PDF) Selective ion exchange recovery of rare earth …

Selective ion exchange of REEs is possible at the pH range of 1.5–2.0 using strongly acidic cation exchange resins containing more than 8 % of DVB. The preliminary results of testing the ...

A Review of Nickel, Copper, and Cobalt Recovery by Chelating Ion …

Zainol Z, Nicol MJ (2009) Comparative study of chelating ion exchange resins for the recovery of nickel and cobalt from laterite leach tailings. Hydrometallurgy 96:283–287. Google Scholar Littlejohn P, Vaughan J (2014) Selective elution of nickel and cobalt from iminodiacetic acid cation exchange resin using ammoniacal solutions.

New Developments in Ion Exchange Resins for the Recovery …

Although ion exchange resins have been used in the Former Soviet Union (FSU) countries for the recovery of gold for many decades, it is still not widely used in the Western World. Synthetically manufactured ion exchange resins can be tailor-made to suit the chemical and mechanical characteristics of a specific application.

Ion Exchange for Product Recovery in Lactic Acid …

To cite this article: Shailesh M. Dave, Sachin S. Patil & A. K. Sur esh (1997) Ion Exchange for Product Recovery in Lactic Acid Fermentation, Separation Science and T echnology, 32:7, 1273-1294 ...

An overview of rare-earth recovery by ion-exchange leaching from ion

Continuous development of advanced technologies has created increasing demand for rare-earth elements (REE), with global emphasis on identifying new alternate sources to ensure adequate supply.Ore deposits containing physically adsorbed lanthanides are substantially lower grade than other REE deposit types; however, the …

Ion Exchange

Ion-exchange membranes have been developed with the basic concept of an ion-exchange process. Ion exchange is a reversible and stoichiometric process in which one species displaces the other ionic species on the exchanger. Figure 14.4 depicts this ion-exchange process ( Sukkar and Skyllas-Kazacos, 2003b ). Figure 14.4.

Recovery of metal ion resources from waste lithium …

A new green pathway of in situ electro-leaching coupled with electrochemically switched ion exchange (EL-ESIX) technology was developed for the separation and recovery of valuable metal ions from waste lithium batteries. By using the in situ electro-leaching, the leaching rates of Li + and Co 2+ from the prepared LiCoO 2 film …

Fundamentals of Ion Exchange

Ion exchange is used in water treatment and also provides a method of separation in many non-water processes. It has special utility in chemical synthesis, medical research, food processing, mining, agriculture and a variety of other areas. The utility of ion exchange rests with the ability to use and reuse the ion exchange material.

A Review of Nickel, Copper, and Cobalt Recovery by …

After leaching step, ion exchange technique is used to recover copper selectively from solution. The main technique used is solvent extraction, but ion …

A novel ion exchange-electrodialysis hybrid system to treat …

This study presented an innovative process combining ion exchange resin and selective electrodialysis for efficient separation and recovery of Y 3+ and hydrochloric acid from the single rare earth element precipitation (REOP) mother liquor. The resin process was systematically evaluated for its ability to reduce the membrane fouling of ...

Magnesium recovery from seawater desalination brines: a …

Ohya et al. proposed an integrated approach which combines recovery technologies such as HPRO, ion-exchange, adsorption and NF for the recovery of all valuable materials contained in seawater. From the analysis of the available literature, it was found that generally batch processes are adopted for Mg recovery, while …

(PDF) Ion Exchange Recovery of Palladium(II) from Acidic …

PDF | This work focuses on the sorption recovery of palladium(II) present in chloride and chloride−nitrate(V) solutions on the commercial strongly basic... | Find, …

Ammonium recovery from municipal wastewater by ion exchange

Ion exchange represents one of the most promising processes for ammonium recovery from municipal wastewater (MWW). However, most previous studies on ammonium ion exchange did not optimize the process or evaluate its robustness under real operational conditions.

Ion exchange recovery of zinc from chloride and …

The present work is focused on sorption recovery of zinc (II) ions from chloride and chloride–sulfate solutions on some commercial anion exchangers with different physical and chemical structures. Initial zinc concentration was 1.0–5.0 mmol/L. HCl concentration in initial solutions was from 0.001 to 4.0 mol/L, whereas …

Recovery of rare earth elements from acid mine drainage: A …

Ion exchange resins consists of two main types, i.e., cation exchange resins, that exchange positively charged ions while anion exchange resins exchange negatively charged ions. ... Polystyrene sulphonic acid purotite C-100 (cation-exchange resin) Recovery of REEs from Uranium Mining Solutions [111] 3.5.1. Cation-exchange resins. …

Application of Ion Exchange for Recovery of Noble Metals …

The ion-exchange process was investigated to discover the applicability of commer- cially available resins in the recovery of noble metals from a technological solution, obtained

Ion exchange recovery of molybdenum from nitric acidic …

However, it should be noted that the character of the isotherms presented does not comply with the true equilibrium state of the ion exchange, since in the pH range of ∼2.5–4.5, HMoO 4 −, Mo 7 O 24 6−, Mo 8 O 26 4− and MoO 4 2− ions exist in the equilibrium state and the polymeric forms concentration is about 60% of the total …

Ion exchange recovery of rhenium from industrially relevant …

Ion exchange of Re from SO 4 2 − solutions was studied from fundamental point of view. • Column and batch experiments, modeling and speciation studies were used as methods. • Amine group favoring less charged and hydrophobic anions is needed for Re recovery. • Dense gel-type physical structure is needed for Re/Mo selectivity.

Ion exchange recovery of platinum from chloride solutions

The dependencies of ion exchange rate on time during recovery of platinum (II, IV) from freshly prepared and kept solutions are shown in Fig. 4. It can be seen from the curves that process rate increases sharply in first seconds of contact between resin and platinum solution, and then it decreases gradually with the saturation of sorbents ...

Ion Exchange Resin Technology in Recovery of Precious and …

In this chapter, recent advances in the recovery of precious and frequently used noble metals including gold, silver, copper, uranium and iron by ion exchange …

Ion Exchange Resin Technology in Recovery of Precious

In hydrometallurgical applications, ion exchange resins have been used increasingly for the recovery and purification ofmetal pregnant solutions or for effluent treatment.This chapter devoted to ...

Ion exchange recovery of Ni(II) from simulated …

Ion exchange is widely used for the recovery and removal of metals from process and waste streams in chemical process industries. The Na-form of strong-acid Purolite NRW-100 resin was used to recover Ni(II) from a simulated electroplating waste solution containing NiSO 4, NH 4 Cl, NaH 2 PO 4, and citrate.A set of mass balance …

Application of Ion Exchange for Recovery of Noble …

The ion-exchange process was investigated to discover the applicability of commercially available resins in the recovery of noble metals from a technological solution, obtained from the leaching of waste …