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ACTIVATED CARBON MANUFACTURER IN VIETNAM
PEI CHIA ENTERPRISE CO., LTD. is a Vietnam-based manufacturer of coconut shell activated carbon under its proprietary brand, VinaSorb®.
With ISO 9001:2015-certified quality management and established manufacturing operations in Vietnam, we offer a diverse range of activated carbon products for water treatment, air and gas purification, gold recovery, and industrial applications.
Our focus is on consistent production processes, reliable supply, and application-specific activated carbon solutions for customers worldwide.
DEVELOPED IN VIETNAM. DESIGNED TO ADSORB.
VinaSorb® Activated Carbon
VinaSorb® Activated Carbon
VinaSorb® activated carbon is produced using carefully selected raw materials and controlled activation processes. Our products are developed to deliver reliable adsorption performance, consistent product characteristics, and pore structures tailored to specific applications.
APPLICATIONS
Drinking Water Treatment
Wastewater Treatment
Air Purification
Semiconductor & Chemical Processing
Gold Recovery
Food & Beverage Purification
Industrial Filtration
U.S. EPA - BEST AVAILABLE TECHNOLOGY (BAT)
U.S. EPA - BEST AVAILABLE TECHNOLOGY (BAT)
A Proven Technology for Drinking Water Treatment
Activated carbon plays an important role in drinking water treatment, providing an effective adsorption solution for a wide range of organic contaminants.
The U.S. Environmental Protection Agency (EPA) identifies Granular Activated Carbon (GAC) as one of the Best Available Technologies (BAT) for treating numerous regulated organic contaminants in drinking water.
EPA Recongnition of Granular Activated Carbon (GAC)
51 of 54
REGULATED ORGANIC CONTAMINANTS
Granular Activated Carbon (GAC) is listed as a Best Available Technology (BAT) for 51 of the 54 organic contaminants referenced in the EPA regulatory table.
Source: U.S. EPA, 40 CFR §141.61(b), Table 2 — BAT for Organic Contaminants (Excluding PFAS).
Organic Contaminants Addressed by GAC
The U.S. Environmental Protection Agency (EPA) identifies Granular Activated Carbon (GAC) as a Best Available Technology (BAT) for a wide range of regulated organic contaminants in drinking water, including selected pesticides, herbicides, and volatile organic compounds (VOCs).
The following are examples of organic contaminants addressed by GAC treatment.
PESTICIDES & HERBICIDES
PESTICIDES & HERBICIDES
Atrazine
Alachlor
Simazine
Lindane
Chlordane
2,4-D
VOLATILE ORGANIC COMPOUNDS (VOCs)
VOLATILE ORGANIC COMPOUNDS (VOCs)
Benzene
Toluene
Ethylbenzene
Xylenes
Trichloroethylene (TCE)
Tetrachloroethylene (PCE)
OTHER REGULATED ORGANIC CONTAMINANTS
OTHER REGULATED ORGANIC CONTAMINANTS
Carbon Tetrachloride
Chlorobenzene
o-Dichlorobenzene
Polychlorinated Biphenyls (PCBs)
Benzo[a]pyrene
Dioxin (2,3,7,8-TCDD)
Treatment Performance
The effectiveness of GAC treatment depends on contaminant characteristics, activated carbon properties, water chemistry, contact time, and operating conditions.
Activated Carbon for PFAS Removal
Activated carbon plays an important role in removing per- and polyfluoroalkyl substances (PFAS) from drinking water. The U.S. Environmental Protection Agency (EPA) identifies Granular Activated Carbon (GAC) as one of the Best Available Technologies (BAT) for certain regulated PFAS.
GAC is generally more effective at adsorbing long-chain PFAS, including PFOA and PFOS, while short-chain PFAS can be more challenging to remove due to their different molecular characteristics.
Treatment performance depends on PFAS characteristics, activated carbon properties, water chemistry, contact time, and operating conditions. Proper carbon selection and system design are essential for achieving consistent and reliable removal performance.
Why Choose Activated Carbon for Water Treatment?
BROAD ADSORPTION CAPABILITY
BROAD ADSORPTION CAPABILITY
Activated carbon can adsorb a wide range of organic contaminants commonly found in drinking water sources.
PROVEN TREATMENT TECHNOLOGY
PROVEN TREATMENT TECHNOLOGY
Granular Activated Carbon (GAC) is identified by the U.S. EPA as a Best Available Technology (BAT) for numerous regulated organic contaminants.
VERSATILE APPLICATIONS
VERSATILE APPLICATIONS
Activated carbon is widely used in municipal drinking water treatment, industrial water purification, and advanced water treatment systems.
TAILORED ADSORPTION PERFORMANCE
TAILORED ADSORPTION PERFORMANCE
Activated carbon grades with different pore structures and surface characteristics can be selected to target specific contaminants and treatment requirements.
What is Best Available Technology (BAT)?
Best Available Technology (BAT) refers to treatment technologies identified by the U.S. Environmental Protection Agency (EPA) based on their demonstrated effectiveness, technical feasibility, and consideration of costs in meeting drinking water standards.
More than one treatment technology may be designated as BAT for a particular contaminant.
BAT designation applies to treatment technologies rather than individual commercial products.
EPA Regulatory References
40 CFR §141.61 — Maximum Contaminant Levels for Organic Contaminants
Relevant Section: §141.61(b), Table 2 — Best Available Technologies (BAT) for Organic Contaminants (Except for PFAS).
Official Source: U.S. Electronic Code of Federal Regulations (eCFR)
View Official Regulation → View on eCFR
What Is Activated Carbon?
What Is Activated Carbon?
Activated carbon is a highly porous adsorbent designed to capture and remove unwanted substances from liquids and gases. Its internal pore structure provides an exceptionally large surface area, allowing contaminants to be retained through adsorption.
Activated carbon is widely used in water treatment, air purification, food and beverage processing, chemical manufacturing, gold recovery, and industrial filtration.
How Does Activated Carbon Work?
How Does Activated Carbon Work?
The performance of activated carbon comes from its highly developed pore structure. Different pore sizes play different roles in the adsorption process:
Micropores capture smaller molecules.
Mesopores support the adsorption of medium-sized molecules and improve adsorption kinetics.
Macropores act as transport channels, allowing contaminants to enter the internal pore structure.
In addition to physical adsorption, the surface chemistry of activated carbon can also contribute to the removal or decomposition of certain contaminants.
Typical Applications
Typical Applications
Activated carbon can be used to remove or reduce:
Organic contaminants
Odors and unpleasant tastes
Color compounds
Volatile organic compounds (VOCs)
Residual chemicals
Heavy metals
Process impurities
For certain industrial applications, activated carbon can also assist in decomposing hydrogen peroxide into water and oxygen.
HOW TO MAKE ACTIVATED CARBON
HOW TO MAKE ACTIVATED CARBON
Coconut Shells → Carbonization → Charcoal → Crushing → Activation → Screening → Washing → Finished Product
Coconut Shells → Carbonization → Charcoal → Crushing → Activation → Screening → Washing → Finished Product
Steam Activation of Coconut-Shell Activated Carbon
Steam Activation of Coconut-Shell Activated Carbon
Steam activation is widely used to produce high-quality activated carbon from coconut shells. The process begins with carbonization: carefully selected coconut shells are heated under controlled conditions to produce coconut-shell charcoal.
The charcoal is then activated in a furnace at temperatures typically ranging from 850°C to 1,000°C. During this stage, steam reacts with the carbon under carefully controlled low-oxygen conditions, gradually developing and enlarging the internal pore structure.
The main reaction can be expressed as:
C + H₂O → H₂ + CO
As the reaction proceeds, part of the carbon is converted into hydrogen and carbon monoxide gases. This controlled removal of carbon atoms opens and expands the internal pores, creating a highly porous carbon structure with a large surface area.
The activation conditions can be adjusted to develop different pore-size distributions, allowing the activated carbon to be tailored for specific applications. Depending on the targeted product specifications, approximately 2 to 4 kg of coconut-shell charcoal may be required to produce 1 kg of activated carbon.
Washing and Purification
Washing and Purification
After activation, the activated carbon may undergo additional washing treatments to reduce soluble ash and other impurities.
Water washing is used to remove water-soluble ash and residual impurities.
Acid washing is used when a lower ash content or higher purity is required. After acid washing, the activated carbon is repeatedly rinsed with water to remove any remaining traces of the acid solution.
These additional treatments help ensure stable product quality and make the activated carbon suitable for applications with more demanding purity requirements.
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