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Factors That Affect The Adsorption Of Activated Carbon On Dioxins

 The pore structure of activated carbon mainly includes specific surface area, pore volume and pore size distribution, which are key parameters affecting the adsorption performance of activated carbon and important factors affecting dioxin adsorption. The adsorption of dioxin on activated carbon is essentially a pore filling process. After the dioxin molecules contact the surface of activated carbon through external diffusion, they diffuse into the pores through the pore channels on the surface of activated carbon. Today we will explain its influence in detail.   Factors affecting the adsorption of dioxin by activated carbon   Pore size distribution: The pore size of activated carbon needs to match the size of dioxin molecules for effective adsorption. The suitable pore size range is 2.0~5.0nm.   Specific surface area: The larger the specific surface area, the stronger the adsorption capacity. Generally, the specific surface area is required to be greater than 500m²/g.   Pore volume: Pore volume and pore volume are also important factors affecting the adsorption effect, and the specific pore volume is usually required to be greater than 0.2cm³/g.   Effects in practical applications   In practical applications, activated carbon achieves effective adsorption and elimination of dioxins through its unique pore structure and physical and chemical properties. For...

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Principle of Mercury Removal by Activated Carbon

Activated carbon is a kind of micro-quality carbon material made of carbon-containing materials. It is black in appearance, odorless, non-toxic, has a developed internal pore structure, a large specific surface area, and strong adsorption capacity. It is a commonly used adsorbent. It makes mercury vapor react with sulfur more easily and more effectively to produce mercury sulfide, which is deposited in the pores of activated carbon to achieve the purpose of removing mercury. It is suitable for removing mercury vapor in airflow in places where conventional methods are difficult to remove mercury. Ensure production safety and environmental protection standards. Principle of activated carbon adsorption of mercury: Activated carbon is a highly adsorbent with a large number of pores and surface area and good adsorption performance. For harmful metal elements such as mercury, they are mainly adsorbed by activated carbon through physical adsorption and chemical adsorption. Physical adsorption refers to the monolayer of mercury atoms formed on the pores and surfaces of activated carbon. This adsorption is reversible and weakens with increasing temperature. Chemical adsorption refers to the adsorption of mercury ions by the active functional groups of activated carbon and the combination with the active functional groups through chemical bonds....

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Relationship Between Methylene Blue And Iodine Adsorption Values ​​Of Activated Carbon

Methylene blue adsorption value and iodine adsorption value are two different indicators to measure the performance of activated carbon, each reflecting different characteristics of activated carbon. ‌ The methylene blue adsorption value is mainly used to characterize the decolorization ability of activated carbon. The molecular diameter of methylene blue is larger than that of iodine molecules, so the methylene blue value is usually used to represent the number of mesopores in activated carbon, which is crucial for the decolorization process. The higher the methylene blue value, the stronger the decolorization ability of activated carbon is usually, which means that the decolorization effect is better at the same unit weight. ‌Iodine adsorption value is mainly used to characterize the adsorption ability of activated carbon for small molecules, especially for micropores with a diameter of less than 1.0nm. The diameter of iodine molecules is only 0.335nm, so the iodine value reflects the degree of development of activated carbon micropores, which is very important for the adsorption of small molecular impurities. The higher the iodine value, the stronger the adsorption capacity of activated carbon, and the more effectively it can remove impurities such as organic matter, residual chlorine, heavy metal ions in water,...

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Working Process of Activated Carbon Adsorption Steam Recovery System

The activated carbon adsorption, desorption, condensation and recovery combination utilizes the adsorption and desorption capabilities of activated carbon at different temperatures to perform adsorption and desorption operations on organic matter. The equipment is mainly composed of an activated carbon adsorption and desorption tank, a pneumatic valve, a fan, a chimney, a dry filter, a drying fan, a condenser, an oil-water separator, etc. The steam desorption system can meet the requirements by using the manufacturer’s steam or a small steam generator. The desorption efficiency can reach 80%-90%. The desorbed gas enters the condensation system and is separated and reused through the oil-water separator, which is energy-saving and environmentally friendly, achieving the effect of resource recycling. Working Process: Pretreatment adsorption: The exhaust gas is pressurized by the fan and enters the activated carbon adsorber. The organic components are adsorbed when penetrating the activated carbon layer, and the adsorbed and purified gas is discharged from the top. Desorption regeneration: The desorption recovery process uses water vapor to regenerate the activated carbon. The desorption steam enters from the top, heats the activated carbon bed, and desorbs organic matter. The humidity and temperature of the desorbed activated carbon are very high, and air needs to...

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Features of Activated Carbon Adsorption Steam Recovery System

The activated carbon adsorption steam desorption condensation recovery system is an organic waste gas treatment system that combines the adsorption method and the condensation method. The activated carbon adsorption + steam desorption condensation recovery system gives full play to the advantages of both methods, has high purification efficiency, and transforms the disadvantages of the adsorption method and the condensation method into a usable one, regenerates the adsorbent, and uses low-temperature water vapor for desorption. The activity of the adsorbent is restored, and the desorbed organic matter is recycled to achieve the purpose of purifying the waste gas. Features of activated carbon adsorption steam recovery system: (1) High solvent recovery and utilization value. (2) Waste gas treatment efficiency reaches 90%. (3) Steam desorption efficiency reaches 80%. (4) Low system temperature reduces safety hazards. (5) Can be operated intermittently or continuously. (6) Activated carbon regeneration saves operating costs. The above introduction to the activated carbon adsorption steam desorption condensation recovery system is expected to be helpful to you. If you need an activated carbon adsorption steam desorption condensation recovery system for waste gas treatment, you can consult Tianhaoyang Environmental Protection at any time to provide you with waste gas treatment solutions and...

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Activated Carbon Raw Material Selection Points

The scope of application of activated carbon It has a highly developed pore structure and is an excellent adsorbent. The adsorption area per gram of activated carbon is equivalent to eight tennis courts. And its adsorption is through physical adsorption and chemical adsorption. Sexual adsorption is achieved. In addition to the carbon element, its components still contain a small amount of hydrogen, nitrogen, oxygen and ash. Its structure is formed by the accumulation of six rings composed of carbon. Based on the microporous volume and high surface area of ​​activated carbon, gold adsorption activated carbon can be made from many kinds of carbonaceous substances, including wood, sawdust, coal, coke, peat, lignin, fruit stone, hard shell, sucrose Pulp, bone, lignite, petroleum residue, etc. Among them, coal and coconut shell have become the most commonly used raw materials for making activated carbon. The production of activated carbon is basically divided into two processes. The first process includes dehydration and carbonization. All the decomposable substances in it produce a developed microporous structure and a huge specific surface area, so it has a strong adsorption capacity. The adsorption capacity of activated carbon, fast adsorption, high strength, is used for gold extraction and other precious...

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