022025-10
Coconut Shell Activated Carbon for Gold Recovery
A practical guide to coconut-shell activated carbon for gold recovery: iodine value, hardn
Applications / Water Treatment
Water Treatment Activated Carbon
Drinking, industrial or ultrapure water — different carbon logic. This page breaks it down.
Selection Logic
| Scenario | Requirement | Recommended | Key Spec |
|---|---|---|---|
| Drinking water (municipal / household purifiers) | Chlorine removal, organic removal, better taste | Coconut shell water carbon | Iodine ≥1000, methylene blue ≥9.0 |
| Industrial feed water (power / petrochemical) | Large volume, backwash-tolerant | Coconut / coal granular carbon | Iodine ≥950, high hardness |
| Ultrapure water | Very low ash, no ion release | High-purity coconut carbon | Iodine 1000–1500, ash ≤3 |
Scenario Guide
Drinking Water → Coconut Shell Carbon
Free of harmful solubles, noticeably improves taste and removes residual chlorine and organic contaminants. Iodine ≥1000 and methylene blue ≥9.0 is the mainstream grade.
Industrial Feed Water → Granular Carbon
Power-plant and petrochemical raw-water treatment handle large volumes; the carbon must survive backwash and last long, so hardness is the hard requirement.
Ultrapure Water → High-Purity Coconut Carbon
For electronics and pharmaceutical ultrapure water, ash must be low (≤3%) so no ions are released to contaminate the water; use high-iodine, high-purity coconut carbon.
Key Parameters
◆
Iodine Number
Adsorption activity; drinking / industrial water mainstream is ≥950–1000, ultrapure water 1000–1500.
◆
Ash
Ultrapure water requires ≤3% — higher ash releases ions that contaminate the water.
◆
Methylene Blue
Decolorization and organics adsorption; ≥9.0 is the premium water grade.
◆
Particle Size
6–16 / 10–24 mesh by use; determines flow resistance and contact efficiency.
Quick Selection Chart
| Your Situation | Recommended | Product |
|---|---|---|
| Household purifier, water dispenser | Coconut shell water carbon (iodine ≥1000) | Coconut Shell Water Treatment Carbon |
| Power / petrochemical raw water, performance-first | Coconut water carbon (granular, hardness-first) | Coconut Shell Water Treatment Carbon |
| Power / petrochemical raw water, cost-first | Coal granular carbon (iodine 700–1100) | Coal Granular Activated Carbon |
| Drinking water, performance-first | Coal briquette carbon (strength ≥95, low floating) | Coal Briquette Activated Carbon |
| Industrial wastewater, powder dosing | Coal powdered carbon (cost-first, fast dosing) | Coal Powdered Activated Carbon |
| Electronics / pharma ultrapure water | High-purity coconut carbon (ash ≤3, custom) | Coconut Shell Water Treatment Carbon |
FAQ
Can one grade serve both drinking water and industrial water treatment?
Not ideally. Drinking water needs low-ash carbon free of harmful solubles (coconut, iodine ≥1000), while industrial feed water prioritises hardness and backwash survival at volume. Match the grade to the water source and its final use.
Why does ultrapure water need low-ash carbon?
Ash releases ions into the water. Electronics and pharmaceutical ultrapure duty requires ash ≤3% so the carbon does not contaminate the treated water.
What iodine value should drinking-water carbon have?
Mainstream drinking-water grade is iodine ≥1000 mg/g with methylene blue ≥9.0 — strong adsorption of chlorine, taste and organics without harmful solubles.
How do I choose between coconut and coal carbon for water?
Coconut is higher purity and performance for drinking and ultrapure water; coal granular carbon (iodine 700–1100) is the cost-effective choice for large-volume industrial and wastewater duty.
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