Cerapure‑AC
Cerapure-AC is a premium multi-function filter media used for biofouling prevention, chlorine and chloramine reduction, and SDI control (5 micron). Ideal media for systems which are “off-line” or on standby for long periods of time.
Overview: What Is Cerapure‑AC?
Cerapure‑AC™ is a hard ceramic granule permanently fused with a reactive copper‑zinc alloy and activated carbon. The alloy drives fast redox reactions for chlorine and chloramine reduction and provides a bacteriostatic effect. The small, uniform particles act as a fine mechanical filter that helps reduce SDI ahead of membranes.
Composition:
- Reactive Cu/Zn alloy (≈50/50, lead‑free): accelerates oxidant reduction; copper imparts bacteriostatic behavior.
- Activated carbon: enhances kinetics and reduces overall particle density.
- Ceramic substrate: extremely hard, low uniformity coefficient, resists attrition and channels; lowers required backwash rate vs. typical GAC.
Performance
Backwash expansion curves and pressure‑drop charts. See brochure: Cerapure-AC
Operating Conditions
Product Specifications - Cerapure-AC
| Parameter | Cerapure-MAC |
|---|---|
| Effective Size (Multiple available) | 0.25 mm - 0.30 mm |
| Uniformity Coefficient | <1.4 (1.25 typical) |
| Density | 89 lbs./cu.ft. |
| Recommended Bed Depth | 24" |
| Recommended Service Flow | 8.0 gpm/ft² |
| Backwash Rate | 10-12 gpm/ft² |
| Operational pH | 6.5 - 9.5 |
| Screen Grade (dry) | 50 x 60 mesh |
| Max. DP Across Bed | 30 psi |
| Packaging | 43 lb. bag (0.50 cu.ft.) |
Sizing & Flow
Chlorine Reduction & Filtration Sizing
| Tank Diameter | Area (ft^2) | Service @ 9 gpm/ft^2 (gpm) | Backwash @ 11 gpm/ft^2 (gpm) |
|---|---|---|---|
| 10 in | 0.55 | 5.0 | 6.1 |
| 12 in | 0.79 | 7.1 | 8.7 |
| 13 in | 0.92 | 8.3 | 10.1 |
| 14 in | 1.07 | 9.6 | 11.8 |
| 16 in | 1.4 | 12.6 | 15.4 |
Chloramine Reduction* & Filtration Sizing
| Tank Diameter | Area (ft^2) | Service @ 6 gpm/ft^2 (gpm) | Backwash @ 11 gpm/ft^2 (gpm) |
|---|---|---|---|
| 10 in | 0.55 | 3.3 | 6.1 |
| 12 in | 0.79 | 4.7 | 8.7 |
| 13 in | 0.92 | 5.5 | 10.1 |
| 14 in | 1.07 | 6.4 | 11.8 |
| 16 in | 1.4 | 8.4 | 15.4 |
*For chloramine reduction and improved kinetics, we suggest using catalytic carbon media. (Centaur)
Use actual water temperature to refine backwash rates (colder water → higher gpm/ft² required for the same expansion).
Cerapure-AC Applications
Chlorine/Chloramine Polishing – RO/NF Protection
Reduces oxidants to protect membranes; simultaneous fines capture lowers SDI.
Oxidant‑Dosed Fe/Mn/H₂S Feeds
Prevents oxidant carryover; copper in the alloy forms copper sulfide in‑bed; backwash removes particulates.
Use Cerapure-AC in POU/POE Systems with Biofouling Risk
Bacteriostatic alloy mitigates growth during operation or stagnation; no routine hot‑water sanitization required. Use for off-line filters where biological overgrowth is a concern.
Cerapure-AC FAQs
Q: What is Cerapure‑AC made of?
A: A ceramic core fused with a copper‑zinc alloy and activated carbon.
Q: How long does the media last?
A: Typically 5–7 years (application dependent).
Q: What are the startup steps?
A: Cerapure-AC does not require “conditioning” at installation, just backwash it and put it into service.
Q: Does it help with H₂S?
A: Yes. Copper forms copper sulfide in‑bed; upstream oxidation and regular backwash improve results.
References & Further Reading
- Cerapure‑AC brochure and FAQ (materials safety, sizing, performance, operating conditions).
- IAPMO R&T on NSF/ANSI 61 (materials safety). Link to the IAPMO Certification
Downloads