What is Activated carbon CTC?
CTC Value is one of the important indicators for evaluating the adsorption performance of activated carbon. The CTC adsorption value of activated carbon is an important parameter for measuring its adsorption capacity for tetrachloride (CTC), an organic pollutant. The CTC adsorption value is typically expressed in mg/g, determined by measuring the adsorption of activated carbon on CTC under certain conditions.
Determination Method of CTC Adsorption Value
The standard method for measuring CTC Value involves immersing the activated carbon sample in a solution of tetrachloride at a certain concentration under standard conditions and measuring the residual concentration of tetrachloride in the solution after a certain period. A higher CTC Value indicates better adsorption of tetrachloride by activated carbon.
The determination of CTC adsorption value typically follows specific standard methods, such as ASTM D3467.
Importance of CTC Adsorption Value
Measuring the adsorption capacity of activated carbon for tetrachloride allows assessment of its effectiveness in adsorbing organic pollutants. CTC adsorption value is an important reference indicator for evaluating the performance of activated carbon and selecting appropriate activated carbon materials.
- Removal Capacity of Organic Pollutants: CTC adsorption value is an indicator of the ability of activated carbon to remove organic pollutants, especially non-polar organic compounds.
- Industrial Application Selection: In industrial processes such as the removal of VOCs (volatile organic compounds) and biogas recovery applications, activated carbon with high CTC values exhibits better adsorption effectiveness. For example, cylindrical activated carbon with a CTC value of 4mm CTC60 is a widely used product type.
- Product Performance Comparison: CTC value can serve as a benchmark for comparing the performance of different activated carbon products.
Common Applications Using CTC Metrics
In gas-phase adsorption, CTC is an important performance metric. Here are some application examples:
- VOCs Removal
- Solvent Recovery
- Air purification
- Biogas desulfurization
- Vapor recovery
- Gold recovery
- Impregnated activated carbon
- Chemical Production
Frequently Asked Questions (FAQ)
Q1: What is the relationship between CTC value and iodine value?
CTC value and iodine value are both indicators of activated carbon’s adsorption performance, but they focus on different adsorbates. CTC value focuses on activated carbon’s adsorption capacity for non-polar organic molecules, while iodine value more reflects activated carbon’s adsorption capacity for small molecules like iodine. Both can be important indicators of activated carbon adsorption performance, but there’s no direct numerical relationship between them.
Q2: Does a higher CTC value mean a higher price for activated carbon?
A2: Typically, activated carbon with higher CTC values may involve more complex production processes, hence the cost and price may be higher.
However, prices are also influenced by other factors such as market demand, brand, distribution channels, etc.
Q3: How do I determine the required CTC value for activated carbon?
A3: Determining the required CTC value for activated carbon should be based on specific application requirements. For example, if the goal is to remove specific organic pollutants, activated carbon with a CTC value that meets that requirement should be selected. It’s recommended to consult our activated carbon experts for support, and we can also provide samples for small-scale testing to determine the optimal CTC value.
Q4: Does the CTC value decrease with the use of activated carbon?
A4: Yes, with increased adsorption of organic pollutants by activated carbon, its CTC value may decrease as available adsorption sites decrease. Regular replacement or regeneration of activated carbon is an important practice to maintain its performance.