Product Overview
This acid washed coconut shell carbon (YK-AC) is engineered for high-purity water systems where pH stability and minimal extractables decide whether a loop runs clean or drifts out of spec. Produced from selected coconut shell through carbonization, steam activation, and extended acid washing, it holds a neutral pH of 5–8 while maintaining iodine adsorption above 1000 mg/g and BET surface area above 1,000 m²/g.
The acid-washing stage strips out soluble ash and alkaline residues—the root cause of pH drift, conductivity spikes, and trace-metal contamination in closed-loop systems. Backed by drinking water hygiene approval and food production licensing, YK-AC serves semiconductor ultra-pure water, food and beverage ingredient water, electroplating bath circulation, condensate polishing, and point-of-use drinking water filters.
Key Application Areas
- Point-of-Use (POU) Drinking Water — Fits undersink and countertop filters to remove chlorine, taste, and organic contaminants while maintaining neutral pH effluent for consumer safety.
- Semiconductor Ultra-Pure Water — Polishes deionized water for wafer cleaning and wet processing, where trace metals and pH excursions are strictly controlled.
- Condensate & Process Water — Treats recovered steam condensate and industrial process loops to remove organic carryover without introducing ionic contamination.
- Food & Beverage Processing — Purifies ingredient water for breweries, soft drink bottling, and food manufacturing where acid-washed purity meets direct-contact standards.
- Electroplating Bath Circulation — Maintains bath chemistry by adsorbing organic impurities without altering pH or introducing metallic contaminants that affect deposit quality.
Specifications
| Technical Specifications | YK-AC | Unit |
|---|---|---|
| Iodine Adsorption Value | >1000 | mg/g |
| Moisture Content | <10 | % -wt |
| Ash Content | <3 | % -wt |
| Bulk Density | >450 | kg/m³ |
| pH | 5-8 | - |
| Crush Strength | >95 | % |
| Specific Surface Area | >1000 | m²/g |
Tested per GB/T-12496-1999. Values represent typical quality averages; BET method for surface area.
Available particle size
- 8×20 Mesh ( 0.85 ~ 2.36 mm)
- 8×30 Mesh ( 0.6 ~ 2.36 mm)
- 12×30 Mesh ( 0.6 ~ 1.7 mm)
- 20×40 Mesh ( 0.43 ~ 0.85 mm)
- 30×60 Mesh ( 0.25 ~ 0.6 mm)
- 80 ~ 200 Mesh ( 0.075 ~ 0.18 mm)
- Other customized particle sizes
Packaging
- 25 kg/Bag
- 500 kg/Bag
Key Advantages
- Acid-Washed pH Stability: The 5–8 pH range eliminates the alkaline spikes common in standard carbons, simplifying system design and protecting pH-sensitive processes.
- Ultra-Low Ash & Leachables: <3% ash and reduced extractables minimize conductivity spikes and trace-metal introduction in UPW and plating loops.
- High Coconut Shell Purity: Natural coconut shell hardness (>95%) and low inherent metals support consistent long-term performance in critical water systems.
- Documented Compliance: Drinking water hygiene approval and food production licensing shorten supplier qualification for electronics, beverage, and industrial water buyers.
Why YK-AC Over Standard Washed Carbon?
Standard coconut shell carbons are typically water-washed or unwashed. They adsorb well, but their residual alkali and soluble ash leach out during the first weeks of service—pushing pH upward, spiking conductivity, and forcing operators into extended rinse cycles or premature changeouts. Acid washing removes these residues at the factory rather than in your system: the carbon arrives at neutral pH, with <3% ash, ready for loops that cannot tolerate drift. For drinking water, semiconductor rinse, and plating applications, that difference is not a preference—it is the specification.
Customization & Supply
Standard sizes from 8×20 to 80×200 mesh ship from stock, with custom cuts available on request. Packaging includes 25 kg bags and 500 kg bulk bags, and every lot ships with a certificate of analysis. Samples are available for qualification testing before order confirmation.