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PSD-NPC Nuclear-Grade Impregnated Coconut Carbon – Radioactive Iodine & Methyl Iodide Removal

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PSD-NPC Nuclear-Grade Impregnated Coconut Carbon – Radioactive Iodine & Methyl Iodide Removal

PSD-NPC is a specialized nuclear-protective impregnated activated carbon built on a high-purity coconut shell substrate. Through precision impregnation of active catalytic components and deep post-processing, it delivers exceptional adsorption and chemisorption performance for radioactive iodine species including elemental iodine and methyl iodide, serving as the core filtration media for nuclear industry ventilation systems and personal respiratory protection.

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Model:
PSD-NPC
Brand:
purestar

Product Overview

PSD-NPC is a nuclear-grade impregnated coconut shell granular activated carbon specifically engineered for the capture of radioactive iodine species in critical air filtration and off-gas treatment systems. Starting with premium high-density coconut shell carbon, the product undergoes controlled impregnation to load stable active components throughout its porous structure. These chemically active sites bind elemental iodine and methyl iodide, converting them into stable, non-volatile forms that remain trapped within the carbon matrix rather than passing through the filter media.

The product combines ultra-high physical adsorption capacity with specialized chemisorption chemistry to deliver dual-action protection against both elemental and organic forms of radioactive iodine. Its high-density coconut shell base provides the structural integrity needed for long-term operation in demanding nuclear ventilation environments, resisting attrition and minimizing dust generation that could compromise downstream HEPA filtration. With low float ash characteristics and stable hydraulic performance across standard 8×16 and 12×20 mesh granular sizes, PSD-NPC maintains consistent airflow resistance and clean operation in containment ventilation, medical isotope facilities, and emergency respiratory protection systems where reliable iodine retention is essential to safety.

Specifications

Parameter	PSD-NPC	Unit
Iodine adsorption value	> 1400	mg/g
Bulk density	450 ~ 550	kg/m³
pH	8 ~ 11	-
Strength	> 95	%
Float ash	No obvious black residue on hand	-
Methyl iodine adsorption (low temperature)	Removal rate > 99%	-
Elemental iodine adsorption	Removal rate ≥ 99.9%	-
Methyl iodine adsorption (high temperature)	Removal rate ≥ 98%	-

Available particle size

8 x 16 Mesh (1.18~2.36 mm)
12 x 20 Mesh (0.85~1.70 mm)
Other customized sizes

Packaging

20 kg/bag、20 kg/barrel

Key Features

Ultra-High Iodine Adsorption (>1400 mg/g)
Highly developed micropore structure provides extensive physical adsorption capacity for elemental iodine, maximizing radioactive contaminant retention per unit volume in compact filter beds.
Specialized Impregnation for Organic Iodides
Controlled active component loading creates chemisorption sites that chemically bind methyl iodide and volatile organic iodides, preventing breakthrough where standard unimpregnated carbon would fail.
Verified Nuclear-Grade Removal Efficiency
Independent testing confirms >99.9% elemental iodine removal, >99% methyl iodide removal at low temperature, and >98% at high temperature, meeting stringent nuclear facility safety and regulatory requirements.
Superior Mechanical Strength (>95%)
High-density coconut shell structure resists attrition during pneumatic transport and long-term bed operation, minimizing carbon dust generation in HEPA-protected downstream systems.
Minimal Float Ash & Clean Handling
"No obvious black residue"hand-grip standard ensures low dust during installation and service, preventing particulate contamination that could blind critical HEPA filtration stages.

Applications

Nuclear Power Plant Containment Ventilation：Primary adsorbent for HVAC and emergency ventilation systems capturing radioactive iodine releases from reactor containment during both normal operations and accident scenarios.
Nuclear Facility Off-Gas Treatment：Treats exhaust streams from fuel handling, waste processing, and decontamination zones to prevent atmospheric release of radioactive iodine species and maintain environmental compliance.
Medical Isotope Production Facilities：Filters exhaust air from iodine-131 production, radiopharmaceutical manufacturing, and research reactor operations to protect personnel and surrounding communities.
Spent Fuel Pool Air Purification：Maintains air quality above spent fuel storage pools by adsorbing iodine released from irradiated fuel assemblies during cooling, transfer, and handling operations.
Nuclear Emergency Respiratory Protection：Filled into full-face and half-face respirator canisters for nuclear emergency response teams, providing portable personal protection against radioactive iodine inhalation hazards.
Radioactive Waste Handling & Storage：Treats off-gas from waste encapsulation, interim storage facilities, and waste drum venting systems to maintain containment integrity and meet regulatory discharge limits.