Chelating Resin for Copper,MC:40-50%

Catalog Number	ACMA00033717
Application	·Capture transition metal ions from solutions containing ferric ions with a pH of less than 2
Bulk Density	0.65-0.75g/ml
Color Form	Grey
Effective Size	0.5-0.7mm
Ionic Form	Free Base
Max Temperature Range Limited	120℃
Moisture Content	40-50%
Nature	Anion
Particle Size Range	0.4-1.25mm
pH Range	1-14
Physical Description	Spherical Beads
Shipping Weight	0.67-0.71g/mL
Specific Density	1.05-1.15g/ml
Uniformity Coefficient	≤1.6
Volume Capacity	≥3.5(Cu2+)meq/ml
Whole Beads	≥90%

Frontier Research

Recovering Copper Using Chelating Ion Exchange Resins in Hydrometallurgy

Botelho Junior A B, et al. Mining, Metallurgy & Exploration, 2019, 36(1), 199-213.

Hydrometallurgical processes involve the selective recovery of copper from solution using ion exchange technology. The effective functional groups of chelating resins used for copper recovery mainly include iminodiacetate and bis-picolylamine (or 2-(aminomethyl)pyridine).
Applications of chelating resins
· Research using chelating resins with iminodiacetate functional groups is widely used because of its high selectivity for copper as well as nickel. Kuz'min investigated the use of resin S930 for copper recovery from pulps resulting from the hydrochlorination leaching of low-grade sulfide ores. The study compared results obtained from synthetic and real solutions containing various metals like Fe(III), Co(II), Mg(II), and Ni(II). The findings revealed that Cu(II) had a higher exchange capacity on the resin compared to nickel. At a pH of 2.5, copper recovery reached 99%, with selective recovery of Cu(II) and Ni(II) while only a small percentage of Co(II), Fe(III), and Zn(II) were also recovered.
· Due to the electron-withdrawing effect of the aromatic group, the nitrogen atom of the bispyridinylamine functional group remains deprotonated even at pH 1.5. For example, in a study by Laatikainen et al., the chelating adsorbent CuWRAM was examined for copper recovery from a hydrometallurgical zinc extraction process. The results demonstrated high efficiency in recovering Cu(II) even in the presence of excess Zn(II) and other contaminants like Mg(II), Mn(II), Cd(II), Ni(II), and Fe(III).

Q&A

What are chelating resins used for?

Chelating resins are used for efficient removal of Cu2+ ions from aqueous solutions.

What factors affect the efficiency of Cu2+ ion removal using resins?

Factors such as type, functional groups, bead size, and other physical and chemical properties of the resin affect Cu2+ sorption efficiency.

How can functional groups be incorporated into a polymeric matrix?

Functional groups can be incorporated into a polymeric matrix through chemical reactions or physical sorption.

Why are resins with chelating functional groups more selective for Cu2+ ions?

Resins with chelating functional groups are more selective for Cu2+ ions due to their ability to form coordinating bonds with Lewis acids like Cu2+ ions.

What types of interactions are involved in the removal of Cu2+ ions by chelating resins?

The removal of Cu2+ ions by chelating resins involves ionic interactions, electrostatic interactions, and coordination.

Which functional groups are preferred for Cu2+ removal?

Resins with bis-picolylamine, iminodiacetate, and sulfonic functional groups are preferred for Cu2+ removal.

How does the iminodiacetate group bond with Cu2+ ions?

The iminodiacetate group forms coordination bonds with Cu2+ ions through a nitrogen and two oxygen atoms, acting as a three dentate ligand.

What is the coordination type interaction between chelate resins and metal ions?

The coordination type interactions between chelate resins and metal ions offer extremely high selectivity for Cu2+ ions.

How is Cu2+ removal achieved by resins containing iminodiacetate groups?

Cu2+ removal is achieved by resins containing iminodiacetate groups through cation exchange accompanied by chelation, involving coordination bonds and electrostatic bonds.