SilverSol™ Granular Activated Carbon

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Activated carbon has been widely used in water purification due to its high adsorption rates and capabilities. The inherent drawback of carbon materials, however, is that they have excellent biocompatibility with bacteria. Bacteria breed on carbon during the purification process and when left overnight, thus making carbon materials themselves pollutants. To address this problem, some researchers have explored depositing colloidal-sized silver and silver powder (silver nitrate) a wide-spectrum antibacterial onto the carbon as bactericides.

Testing and experiments showed there are a number of problems with this approach. First at all, the silver coated activated carbon has limited antibacterial activity. Secondly, high temperatures required for carbonizing and activating activated carbon fibers cause silver particles to coalesce and form large particles that have inferior antibacterial activities. Thirdly, severe attrition of silver particles not only cause antibacterial activities to deteriorate, but may potentially cause “Argyria” as well.

At NSM™, we’ve developed a new kind of antibacterial substance which is safe and effective. It is done by coating SilverSol™ ( an antibacterial coating agent produced using the latest nanotechnology from pure silver (Ag 99.99%). The silver is electromagneted by using high voltage to dissolve it into water .)

The antibacterial activities were evaluated and tested against total bacterial count and compared with normal carbon and other forms of silver coated carbon. The result of the experiments proved the effectiveness of SilverSol™ as an antibacterial coating agent and the effectiveness of SilverSol™ Coated Carbon to eliminate and control the grow of bacteria in the carbon by more than 99% effective (See Test Report).

This suggested that SilverSol™ antibacterial agent and SilverSol™ Coated Activated Carbon are highly effective and efficient bactericides. Below is a comparison of the characteristics between the usage of SilverSol™ and the commonly used Silver Nitrate as antibacterial coating agent.

Item

SilverSol™

Silver Powder/ Nitrate

Bonding onto Carbon

Permanently bonded onto carbon

Loosely bonded onto carbon

Characteristic of Product

Liquid

Powder

Cost of Production

Low (very economical)

High cost

Coating / Absorption

100% – Evenly Coated

Not evenly mixed / coated

Effectiveness over long period of usage

Permanent / Life Long

Lost effectiveness after long period of usage

Silver Content

10-50,000ppm depending on the application / usage

1-2% silver powder/ nitrate is added for coating (ppm-varied)

All carbon products are available in a variety of mesh sizes. The most common granular sized are USS Mesh 3×6, 4×8, 6×12, 8×16, 8×30, 12×30, 12×70, 20×40, 30×80. Other mesh sizes are available on request and a fine powder can be produced at 100×325 (USS MESH).

The efficiency of a particular carbon will be influenced by the granular size, such efficiency increases as the size decreases. However, there is limit as to the size to be used due to the pressure drop restrictions.

The most common sieve sizes are tabulated below in their metric form, and compare to the British and American standards.

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BSS

USS

Sieve No.

mm

Sieve No.

mm

1/4

6.70

3

6.30

3/16

4.75

4

4.75

5

3.35

6

3.35

6

2.80

7

2.80

7

2.36

8

2.36

8

2.00

10

2.00

10

1.70

12

1.70

12

1.40

14

1.18

14

1.18

18

0.85

18

0.85

20

1.70

22

0.71

25

0.71

25

0.60

30

0.60

30

0.500

35

0.500

36

0.425

40

0.425

44

0.355

50

0.60

52

0.300

60

0.300

72

0.212

70

0.212

100

0.150

100

0.150

200

0.075

200

0.075

350

0.045

325

0.045

SilverSol™ Coated WT100 Granular Activated Carbon

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Coconut Shell Based Activated Carbon which is steamed activated, and has large pore volume which makes it highly suitable for the removal of taste, odor, ozone, chlorine, dissolved organic contaminants such as THMs and bacteria from portable and process water.

Typical Analysis

Method of Analysis

Iodine No.

1000 to 1100 mg/g

ASTM D4607-86

CTC (CCL4) Activity

50 to 55 %

ASTM D37-88

Apparent Density

0.42 to 0.48 g/cc

ASTM D2854-89

Ball Pan Hardness

Moisture Content

Ash Content

pH Value

95% Min

< 5%

< 5%

9.5

ASTM D3820-79

ASTM D2867-91

ASTM D2866-83

JIS K1470

PARCTICLE SIZE DISTRIBUTION

ASTM D2862-82

 

Mesh

+12 (+1.70mm)

>5%

Mesh

-12+30 (-1.70mm+0.60mm)

>90%

Mesh

-30 (-0.60mm)

<5%

 

Notes:

The typical analysis are the average analysis figures based on previous year’s production and may fluctuate due to the base material.

Applications

  • Removal of oil from condensate water
  • Removal of pesticides from waste water
  • Removal of taste, odour, chlorine, ozone, organic contaminants and bacteria from process water
  • Protection of ion-exchange resins
  • Replacement of sand in Rapid Gravity Sand Filters
  • Improvement of color, taste and odor of beverages li>
  • Purification of inorganic acids and salts of electroplating baths etc

SilverSol™ Coated WT200 Granular Activated Carbon

Coconut Shell Based Activated Carbon which is steamed activated, and has large pore volume which makes it highly suitable for the removal of taste, odour, ozone, chlorine, dissolved organic contaminants such as THMs and bacteria from portable and process water.

Typical Analysis

Method of Analysis

Iodine No.

1000 to 1100 mg/g

ASTM D4607-86

CTC (CCL4) Activity

50 to 55%

ASTM D3467-88

Apparent Density

0.42 to 0.48 g/cc

ASTM D2854-89

Ball Pan Hardness

95% Min

ASTM D3820-79

Moisture Content

< 5%

ASTM D2867-91

Ash Content

<3%

ASTM D2866-83

pH Value

9.5

JIS K1470

PARCTICLE SIZE DISTRIBUTION

ASTM D2862-82

 

Mesh +14 (+1.40mm) >5%
Mesh -14+10 (-1.40mm+0.42mm) >90%
Mesh -4 (-0.42mm) <5%

 

Notes:

The typical analyses are the average analysis figures based on previous year’s production and may fluctuate due to the base material.

Applications

  • Removal of oil from condensate water
  • Removal of pesticides from waste water
  • Removal of taste, odour, chlorine, ozone, organic contaminants and bacteria from process water
  • Protection of ion-exchange resins
  • Replacement of sand in Rapid Gravity Sand Filters
  • Improvement of color, taste and odor of beverages
  • Purification of inorganic acids and salts of electroplating baths etc
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SilverSol™ Coated WT300 Granular Activated Carbon

Coconut Shell Based Activated Carbon which is steamed activated, and has large pore volume which makes it highly suitable for the removal of taste, odor, ozone, chlorine, dissolved organic contaminants such as THMs and bacteria from portable and process water.

Typical Analysis

Method of Analysis

Iodine No.

CTC (CCL4) Activity

Apparent Density

1000 to 1100 mg/g

50 to 55%

0.42 to 0.51 g/cc

ASTM D4607-86

ASTM D3467-88

ASTM D2854-89

Ball Pan Hardness

95% Min

ASTM D3820-79

Moisture Content

< 5%

ASTM D2867-91

Ash Content

< 3%

ASTM D2866-83

pH Value

9.5

JIS K1470

PARCTICLE SIZE DISTRIBUTION

ASTM D2862-82

 

Mesh

+12

(+1.70mm) >5%

Mesh

-12+30

(-1.70mm+0.60mm)>90%

Mesh

-30

(-0.60mm) <5%

 

Notes:

The typical analyses are the average analysis figures based on previous year’s production and may fluctuate due to the base material.

Applications

  • Removal of taste, odour, chlorine, ozone, organic contaminants and bacteria from process water
  • Protection of ion-exchange resins
  • Replacement of sand in Rapid Gravity Sand Filters
  • Improvement of color, taste and odor of beverages
  • Carbon block for Reverse Osmosis System

SilverSol™ Coated WT400 Granular Activated Carbon>

Coconut Shell Based Activated Carbon which is steamed activated, and has large pore volume which makes it highly suitable for the removal of taste, odor, ozone, chlorine, dissolved organic contaminants such as THMs and bacteria from portable and process water.

Typical Analysis

Method of Analysis

Iodine No.

1000 to 1100 mg/g

ASTM D4607-86

CTC (CCL4) Activity

50 to 55%

ASTM D2854-88

Apparent Density

0.42 to 0.51 g/cc

ASTM D2854-89

Ball Pan Hardness

95% Min

ASTM D3820-79

Moisture Content

< 5%

ASTM D2867-91

Ash Content

< 4%

ASTM D2866-83

pH Value

8 to 10.5

JIS K1470

PARCTICLE SIZE DISTRIBUTION

ASTM D2862-82

 

Mesh +8 (+2.36mm) >5%
Mesh -12+30 (-2.36mm+0.60mm) >90%
Mesh -30 (-0.60mm) <5%

 

Notes:

The typical analyses are the average analysis figures based on previous year’s production and may fluctuate due to the base material.

Applications

  • Removal of oil from condensate water
  • Removal of pesticides from waste water
  • Removal of taste, odour, chlorine, ozone, organic contaminants and bacteria from process water
  • Protection of ion-exchange resins
  • Replacement of sand in Rapid Gravity Sand Filters
  • Improvement of color, taste and odor of beverages
  • Purification of inorganic acids and salts of electroplating baths etc
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SilverSol™ Coated ET100 Granular Activated Carbon

Coconut Shell Based Activated Carbon which is steamed activated specially developed for the removal of ammonia, organic ammonia derivatives and bacteria from air. The carbon is impregnated with phosphoric acid to produce a carbon that has an excellent ability to absorb ammonia, bacteria and its derivative. The product is used in air filter system whenever ammonia needs to be removed from the atmosphere.

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Typical Analysis

Method of Analysis

Iodine No.

CTC (CCL4) Activity

1000 to 1100 mg/g

50 to 60%

ASTM D4607-86

ASTM D3467-88

Apparent Density

0.78 to 0.82 g/cc

ASTM D2854-89

Ball Pan Hardness

95% Min

ASTM D3820-79

Moisture Content

< 5%

ASTM D2867-91

Ash Content

< 3%

ASTM D2866-83

pH Value

9.5

JIS K1470

PARCTICLE SIZE DISTRIBUTION

ASTM D2862-82

 

Mesh

+4

>5%

Mesh

-4+8

>90%

Mesh

-8

<5%

 

Notes:

The typical analyses are the average analysis figures based on previous year’s production and may fluctuate due to the base material.

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Applications

  • Abattoirs
  • Poultry Farms
  • Sewage Treatment
  • Public Convenience
  • Chemical Processing
  • Fertilizer Manufacture

Advantages

  • Can be regenerated
  • Efficient adsorption rate
  • Excellent filling characteristics
  • Selected pore structure for max. adsorption

SilverSol™ Coated ET200 Granular Activated Carbon

Coconut Shell Based Activated Carbon which is steamed activated and has large pore volume and very hard which makes it highly suitable for filtering our air borne odour causing acid gases in the vapour phase. They are manufactured from carbon impregnated with potassium iodide to produce high quality carbon are in the air filter systems at Sewage Treatment Work, Sewage Pumping Stations, Vent Pipes and Septic Tanks.

Typical Analysis

Method of Analysis

Iodine No.

CTC (CCL4) Activity

1000 to 1100 mg/g

50 to 60%

ASTM D4607-86

ASTM D3467-88

Apparent Density

0.78 to 0.82 g/cc

ASTM D2854-89

Ball Pan Hardness

95% Min

ASTM D3820-79

Moisture Content

< 5%

ASTM D2867-91

Ash Content

<5%

ASTM D2866-83

pH Value

9.5

JIS K1470

PARCTICLE SIZE DISTRIBUTION

ASTM D2862-82

 

Mesh +8 (+4.75mm) >5%
Mesh -4+8 (-4.75mm+2.36mm) >90%
Mesh -8 (-2.36mm) <5%

 

Notes:

The typical analyses are the average analysis figures based on previous year’s production and may fluctuate due to the base material.

Applications

Gas Adsorption for the following:

  • Hydrogen Sulphide
  • Sulphur Dioxide
  • Hydrogen Chlorine
  • Nitrogen Dioxide
  • Other acid gases

Advantages

  • Efficient adsorption rate
  • Excellent filling characteristics
  • Selected pore structure for max. adsorption
  • Proven industrial experience
  • Resistance to acidic and basic attack

SilverSol™ Coated ET300 Granular Activated Carbon

Coconut Shell Based Activated Carbon which is steamed activated and has large pore volume and very hard, which makes it highly suitable for removal of odour, obnoxious smell, smoke and bacteria. It is also widely used in air conditioning system and clean rooms.

Typical Analysis

Method of Analysis

Iodine No.

1000 to 1100 mg/g

ASTM D4607-86

CTC (CCL4) Activity

50 to 55%

ASTM D3467-88

Apparent Density

0.45 to 0.52 g/cc

ASTM D2854-89

Ball Pan Hardness

98% Min

ASTM D3820-79

Moisture Content

< 5%

ASTM D2867-91

Ash Content

<5%

ASTM D2866-83

pH Value

10

JIS K1470

PARCTICLE SIZE DISTRIBUTION

ASTM D2862-82

 

Mesh +4 (+4.75mm) >5%
Mesh -4+8 (-4.5mm+2.36mm) >90%
Mesh -8 (-2.36mm) <5%

 

Notes:

The typical analyses are the average analysis figures based on previous year’s production and may fluctuate due to the base material.

Typicals Applications

  • Kitchen hoods
  • Magnetic tape/ discs
  • Chemical manufacture
  • Air conditioning systems
  • Packaging gravure printing
  • Synthetic fibre & film manufacture
  • Air craft & airport ventilation systems
  • Solvent recovery
  • Printing industries
  • Clean rooms in assembly plants

SilverSol™ Coated SR100 Granular Activated Carbon

Coconut Shell Based Activated Carbon which is steamed activated and has large pore volume and very hard, which makes it highly suitable for recovering different solvent. The carbon has significantly improved absorption efficiencies for low molecular weight solvents and bacteria removal compared to coal based carbon due to the microspores structure found in coconut shell based carbon. The main uses of the products are in the chemical manufacture, film and foil coating, publication and packing gravure printing and in the manufacture of adhesives.

Typical Analysis

Method of Analysis

Iodine No.

1200 to 1300 mg/g

ASTM D4607-86

CTC (CCL4) Activity

60 to 65%

ASTM D3467-88

Apparent Density

0.47 to 0.51 g/cc

ASTM D2854-89

Ball Pan Hardness

98% Min

ASTM D3820-79

Moisture Content

< 5%

ASTM D2867-91

Ash Content

< 5%

ASTM D2866-83

pH Value

10.5

JIS K1470

PARCTICLE SIZE DISTRIBUTION

ASTM D2862-82

 

Mesh

+4

(+4.75mm) >5%

Mesh

-4+8

(-4.5mm+2.36mm) >90%

Mesh

-8

(-2.36mm) <5%

 

Notes:

The typical analyses are the average analysis figures based on previous year’s production and may fluctuate due to the base material.

Typicals Applications

  • Emission Control
  • Solvent storage tank vents
  • Dual and multiple recovery systems

For the Recovery of the following Solvents

  • Ethers (THF, Diethyl Ether)
  • Esters (Ethyl, Acetate, Propyl Acetate)
  • Alcohols (Ethyl Alcohol, Propyl Alcohol)
  • Hydrocarbons (Toluence, Hexane, Heptane)
  • Ketenes (Acetones, Cyclohexanone, MEK, MIBK)
  • Chlorinated and Halogenated Solvents (Trichloroethane, Methylene Chloride, Trichloroethylene, Chloroform and Freons)

Industrial Uses

  • Automotive
  • Typewriter ribbon
  • Vinyl coating
  • Chemical manufacture
  • Photo product
  • Printed circuit boards
  • Fabric coating
  • Surgical tape / bandages
  • Paint spraying
  • Packing gravure printing
  • Copying paper
  • Brake and clutch lining
  • Gasket material
  • Adhesive paper coating
  • Pharmaceuticals
  • Publication gravure printing
  • Metal degreasing
  • Printing and coating of PVC
  • Rubber spreading
  • Film / foil coating and laminating
  • Magnetic tape / discs
  • Synthetic fibre and film manufacturing

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For the Recovery of the following Solvents

  • Can be regenerated
  • Optimum retentively
  • Excellent physical durability
  • Proven successfully in many solvent recovery units
  • Selected pore structure for max. Solvent adsorption