Zinc Reduction

Chemical Formula: Zn, ZnCl3, Zn(CN)3
Present as: cation, specialty, anion

Zinc is a chemical element with the symbol Zn and atomic number 30. It is the first element in group 12 of the periodic table. In some respects zinc is chemically similar to magnesium: both elements exhibit only one normal oxidation state (+2), and the Zn2+ and Mg2+ ions are of similar size. Zinc is the 24th most abundant element in Earth’s crust and has five stable isotopes. The most common zinc ore is sphalerite (zinc blende), a zinc sulfide mineral. The largest workable lodes are in Australia, Asia, and the United States. Zinc is refined by froth flotation of the ore, roasting, and final extraction using electricity (electrowinning).
Brass, an alloy of copper and zinc in various proportions, was used as early as the third millennium BC in the Aegean, Iraq, the United Arab Emirates, Kalmykia, Turkmenistan and Georgia, and the second millennium BC in West India, Uzbekistan, Iran, Syria, Iraq, and Israel (Judea). Zinc metal was not produced on a large scale until the 12th century in India and was unknown to Europe until the end of the 16th century. The mines of Rajasthan have given definite evidence of zinc production going back to the 6th century BC. The oldest evidence of pure zinc comes from Zawar, in Rajasthan, as early as the 9th century AD when a distillation process was employed to make pure zinc. Alchemists burned zinc in air to form what they called “philosopher’s wool” or “white snow”.
Zinc is an essential trace nutrient and is the only supplement proven to help prevent colds and lessen their severity. Zinc compounds are generally non-toxic and zinc salts are commonly added to potable waters to help protect piping systems from corrosion. Zinc metal is widely used as a coating to protect the base metal underneath from corrosion.

Zinc is readily removed from potable water by a variety of SAC type cation resins. However, it is usually necessary to remove other divalent hardness ions along with the zinc.

Zinc in wastewater can often be removed with a variety of cation exchangers, depending on pH, TDS, and chloride concentration.

Zinc chloride complexes begin to form at approx. 500 ppm chloride concentration and become stronger as chloride concentration increases. Zinc chloride can be extracted from high chloride brines by a variety of strong base anion resins, which are then “regenerated” with water.

Zinc cyanide is well removed by a variety of strong base anion resins. Free cyanide also loads on the resin and capacity is also limited by high TDS.

Related Products

CG8

Media Sub Category Strong Acid Cation
Polymer Matrix Styrenic Gel
Ionic Form Sodium
Applications:  

- Softening - Industrial
- Demineralization
- Iron Reduction
- Ammonia Reduction

SIR-300

Media Sub Category Chelating Resin
Polymer Matrix Styrenic Macroporous
Applications:  

- Trace Metals Reduction

SBG1

Media Sub Category Strong Base Anion
Polymer Matrix Styrenic Gel
Ionic Form Chloride
Applications:  

- Demineralization
- Trace Contaminants (U, Cr, As, Se, F, ClO₄, ClO₃)
- Nitrate Reduction
- Sulfate Reduction

SBG2

Media Sub Category Strong Base Anion
Polymer Matrix Styrenic Gel
Ionic Form Chloride
Applications:  

- Dealkalizer
- Demineralization
- Trace Contaminants (U, Cr, As, Se, F, ClO₄, ClO₃)
- Nitrate Reduction
- Sulfate Reduction

CG10

Media Sub Category Strong Acid Cation
Polymer Matrix Styrenic Gel
Ionic Form Sodium
Applications:  

- Softening - Industrial
- Demineralization
- Softening - High Temperature

SACMP

Media Sub Category Strong Acid Cation
Polymer Matrix Styrenic Macroporous
Ionic Form Sodium
Applications:  

- Softening - Industrial
- Demineralization
- Radwaste Reduction

WACG-Na

Media Sub Category Weak Acid Cation
Polymer Matrix Acrylic Gel
Ionic Form Sodium
Applications:  

- Heavy Metals Reduction
- High TDS Softening

WACMP-Na

Media Sub Category Weak Acid Cation
Polymer Matrix Acrylic Macroporous
Ionic Form Sodium
Applications:  

- Heavy Metals Reduction
- High TDS Softening

SBG1P

Media Sub Category Strong Base Anion
Polymer Matrix Styrenic Porous Gel
Ionic Form Chloride
Applications:  

- Demineralization

SBG1-OH

Media Sub Category Strong Base Anion
Polymer Matrix Styrenic Gel
Ionic Form Hydroxide
Applications:  

- Demineralization
- Anion Component in Mixed Beds

SBG2-OH

Media Sub Category Strong Base Anion
Polymer Matrix Styrenic Gel
Ionic Form Hydroxide
Applications:  

- Demineralization

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