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SilverSol Granular 
Activated Carbon

INTRODUCTION

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 NST®, 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.
ItemSilverSolSilver Powder/ Nitrate
Bonding onto CarbonPermanently bonded onto carbonLoosely bonded onto carbon
Characteristic of ProductLiquidPowder
Cost of ProductionLow (very economical)High cost
Coating / Absorption100% – Evenly CoatedNot evenly mixed / coated
Effectiveness over long period of usagePermanent / Life LongLost effectiveness after long period of usage
Silver Content10-50,000ppm depending on the application / usage1-2% silver powder/ nitrate is added for coating (ppm-varied)
MESH SIZE
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.

mesH SIZE TABLE

BSSUSS
Sieve No.mmSieve No.mm
1/46.736.3
3/164.7544.75
53.3563.35
62.872.8
72.3682.36
82102
101.7121.7
121.4141.18
141.18180.85
180.85201.7
220.71250.71
250.6300.6
300.5350.5
360.425400.425
440.355500.6
520.3600.3
720.212700.212
1000.151000.15
2000.0752000.075
3500.0453250.045
Water Treatment 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.

SilverSol Coated Granular Activated Carbon

WT100

Typical AnalysisMethod of Analysis
Iodine No.1000 to 1100 mg/gASTM D4607-86
CTC (CCL4) Activity50 to 55 %ASTM D37-88
Apparent Density0.42 to 0.48 g/ccASTM D2854-89
Ball Pan Hardness95% MinASTM D3820-79
Moisture Content< 5%ASTM D2867-91
Ash Content< 5%ASTM D2866-83
pH Value9.5JIS K1470
PARCTICLE SIZE DISTRIBUTIONASTM D2862-82
Mesh
+12(+1.70mm)>5%
-12+30(-1.70mm+0.60mm)>90%
-30(-0.60mm)<5%

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

WT200

Typical AnalysisMethod of Analysis
Iodine No.1000 to 1100 mg/gASTM D4607-86
CTC (CCL4) Activity50 to 55%ASTM D3467-88
Apparent Density0.42 to 0.48 g/ccASTM D2854-89
Ball Pan Hardness95% MinASTM D3820-79
Moisture Content< 5%ASTM D2867-91
Ash Content<3%ASTM D2866-83
pH Value9.5JIS K1470
PARCTICLE SIZE DISTRIBUTIONASTM D2862-82
Mesh
+14(+1.40mm)>5%
-14+10(-1.40mm+0.42mm)>90%
-4(-0.42mm)<5%

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

WT300

Typical AnalysisMethod of Analysis
Iodine No.1000 to 1100 mg/gASTM D4607-86
CTC (CCL4) Activity50 to 55%ASTM D3467-88
Apparent Density0.42 to 0.51 g/ccASTM D2854-89
Ball Pan Hardness95% MinASTM D3820-79
Moisture Content< 5%ASTM D2867-91
Ash Content< 3%ASTM D2866-83
pH Value9.5JIS K1470
PARCTICLE SIZE DISTRIBUTIONASTM D2862-82
Mesh
+12(+1.70mm)>5%
-12+30(-1.70mm+0.60mm)>90%
-30(-0.60mm)<5%

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
Purification of inorganic acids and salts of electroplating baths etc
Notes : 
The typical analyses are the average analysis figures based on previous year’s production and may fluctuate due to the base material.

WT400

Typical AnalysisMethod of Analysis
Iodine No.1000 to 1100 mg/gASTM D4607-86
CTC (CCL4) Activity50 to 55%ASTM D2854-88
Apparent Density0.42 to 0.51 g/ccASTM D2854-89
Ball Pan Hardness95% MinASTM D3820-79
Moisture Content< 5%ASTM D2867-91
Ash Content< 4%ASTM D2866-83
pH Value8 to 10.5JIS K1470
PARCTICLE SIZE DISTRIBUTIONASTM D2862-82
Mesh
+8(+2.36mm)>5%
-12+30(-2.36mm+0.60mm)>90%
-30(-0.60mm)<5%

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

SilverSol Coated Granular Activated Carbon

ET100

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.
Typical AnalysisMethod of Analysis
Iodine No.1000 to 1100 mg/gASTM D4607-86
CTC (CCL4) Activity50 to 60%ASTM D3467-88
Apparent Density0.78 to 0.82 g/ccASTM D2854-89
Ball Pan Hardness95% MinASTM D3820-79
Moisture Content< 5%ASTM D2867-91
Ash Content< 3%ASTM D2866-83
pH Value9.5JIS K1470
PARCTICLE SIZE DISTRIBUTIONASTM D2862-82
Mesh
+4->5%
-4+8->90%
-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.

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

eT200

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 AnalysisMethod of Analysis
Iodine No.1000 to 1100 mg/gASTM D4607-86
CTC (CCL4) Activity50 to 60%ASTM D3467-88
Apparent Density0.78 to 0.82 g/ccASTM D2854-89
Ball Pan Hardness95% MinASTM D3820-79
Moisture Content< 5%ASTM D2867-91
Ash Content<5%ASTM D2866-83
pH Value9.5JIS K1470
PARCTICLE SIZE DISTRIBUTIONASTM D2862-82
Mesh
+8(+4.75mm)>5%
-4+8(-4.75mm+2.36mm>90%
-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
Chemical Processing

Advantages

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

eT300

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 AnalysisMethod of Analysis
Iodine No.1000 to 1100 mg/gASTM D4607-86
CTC (CCL4) Activity50 to 55%ASTM D3467-88
Apparent Density0.45 to 0.52 g/ccASTM D2854-89
Ball Pan Hardness98% MinASTM D3820-79
Moisture Content< 5%ASTM D2867-91
Ash Content<5%ASTM D2866-83
pH Value10JIS K1470
PARCTICLE SIZE DISTRIBUTIONASTM D2862-82
Mesh
+4(+4.75mm)>5%
-4+8(-4.75mm+2.36mm>90%
-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
SOLVENT RECOVERY CARBONS
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.

SilverSol Coated Granular Activated Carbon

sr100

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 AnalysisMethod of Analysis
Iodine No.1200 to 1300 mg/gASTM D4607-86
CTC (CCL4) Activity60 to 65%ASTM D3467-88
Apparent Density0.47 to 0.51 g/ccASTM D2854-89
Ball Pan Hardness98% MinASTM D3820-79
Moisture Content< 5%ASTM D2867-91
Ash Content< 5%ASTM D2866-83
pH Value10.5JIS K1470
PARCTICLE SIZE DISTRIBUTIONASTM D2862-82
Mesh
+4(+4.75mm)>5%
-4+8(-4.5mm+2.36mm>90%
-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
Hydrogen Chlorine

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)
Resistance to acidic and basic attack
Chlorinated and Halogenated Solvents (Trichloroethane, Methylene Chloride, Trichloroethylene, Chloroform and Freons)
Can be regenerated
Optimum retentively
Excellent physical durability
Proven successfully in many solvent recovery units
Selected pore structure for max. Solvent adsorption

Industrial Uses

Ethers (THF, Diethyl Ether)
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
Alcohols (Ethyl Alcohol, Propyl Alcohol)
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
test report
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