Granular Activated Carbon (GAC)
Granular activated carbon (GAC), including coconut shell carbon, is used in activated carbon filters to remove chlorine, taste, odour, colour and organic matter from water.
- Supplied by Zyax Chem, Mumbai
- Send your water or process details for a recommendation
- Bulk packs, delivered across India
- What it does
- Adsorbs organics and removes chlorine from water
- Used in
- RO pre-treatment, drinking water filters, STP tertiary treatment, food and beverage water
- Forms
- Granules in bags
- How it is applied
- Filled into pressure or gravity carbon filters
What is Granular Activated Carbon (GAC)?
Activated carbon has an enormous internal surface area that adsorbs organic compounds, colour and taste and odour causing substances. It also removes free chlorine by a chemical reaction, which is why carbon filters sit before RO plants.
Coconut shell carbon is hard, low in dust and well suited to drinking water. Carbon grades differ in particle size and adsorption capacity, so the right grade depends on the job.
Activated carbon: quick facts
| Made of | Carbon (C), processed to create a very large internal surface |
|---|---|
| Raw materials | Coconut shell, coal or wood |
| Forms | Granular (GAC), powdered (PAC) and pelletised |
| Appearance | Black granules, powder or pellets |
| CAS number | 7440-44-0 |
| Main uses | Removing chlorine, taste, odour, colour and organics from water; RO pre-treatment; air and gas purification; decolourising liquids |
Where granular activated carbon is used
- Activated carbon filters before RO
- Drinking and packaged water treatment
- STP and ETP tertiary treatment for colour and smell
- Food, beverage and process water
How to use granular activated carbon
- Size the filter for flow and contact time.
- Backwash new carbon to remove fines before service.
- Monitor chlorine and taste or odour after the filter.
- Replace when the carbon is exhausted.
Choosing the right grade
To recommend a product and starting dose, send us:
- Flow rate and filter size
- What to remove: chlorine, odour, colour, organics
- Particle size or grade currently used
Handling and safety
Dust can irritate; handle with a mask. Wet activated carbon removes oxygen from the air in closed vessels; take care before entering filters.
Safety data sheet and technical data sheet available on request.
Grades and specifications
Typical values for each grade we supply. Technical data sheet and safety data sheet available on request.
Zyax Coconut shell granular activated carbon
Hard, high surface area carbon for water filters, RO pre-treatment and dechlorination.
| Appearance | Black granules |
|---|---|
| Particle size (US mesh) | 4×8, 8×16, 16×32 |
| Iodine value | 450 to 1,100 mg/g |
| Surface area | 400 to 1,100 m²/g |
| pH | 9 to 10 |
| Moisture | 5% max |
| Ash | 6% max |
| Bulk density | 0.55 ± 0.05 g/cc |
| Hardness number | 95 |
| HS code | 38021000 |
Related products
- Powdered activated carbon
- Pelletised carbon
- Silver-impregnated carbon
- Iron removal media
- Sand and gravel
- All Activated Carbon
Frequently asked questions
Why is a carbon filter used before RO?
To remove free chlorine and organic matter that would damage or foul the RO membranes.
How often should activated carbon be replaced?
It depends on the load and flow; replace when chlorine or odour starts passing through the filter.
Do you publish prices for Granular Activated Carbon (GAC)?
Prices depend on the grade, pack size and quantity, so we quote on request. Send your requirement on WhatsApp at +91 98333 22685 or through the form on this page.
Get a quote for Granular Activated Carbon (GAC)
Tell us the application, quantity and your water or process details. We do not publish prices; our team replies with a recommendation and quote.
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