How to Choose Activated Carbon for Flue Gas Treatment

Flue gas emitted from industrial processes contains a wide range of harmful pollutants, including particulate matter, sulfur oxides, nitrogen oxides, VOCs, heavy metals, and dioxins, which pose serious risks to the environment and human health. As environmental regulations become increasingly strict, flue gas treatment has become a critical part of industrial emissions control. This article provides a comprehensive overview of flue gas treatment technologies, highlighting adsorption, catalytic oxidation, and scrubbing methods, with a focus on activated carbon as a key material for deep purification. Activated carbon plays a vital role in removing trace and hard-to-degrade pollutants such as mercury, VOCs, and dioxins, making it an essential “final barrier” for achieving ultra-low emissions. The article further explains the advantages of activated carbon, including its strong adsorption capacity, wide applicability across industries, and environmental benefits compared to alternative materials. It also details different types of activated carbon—powdered (PAC), granular (GAC), and impregnated modified carbon—along with their specific applications in flue gas treatment systems. In addition, key selection factors are discussed, such as target pollutants, pore structure, particle size, raw materials, impregnation type, and operating conditions. Proper system design, dosage control, performance testing, and supplier selection are emphasized as crucial for ensuring efficient and cost-effective operation. Overall, the article concludes that successful flue gas purification depends on selecting the right type of activated carbon and optimizing its application according to real industrial conditions, enabling compliant, efficient, and sustainable emissions control.