How to make better granular activated carbon

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Asked at 2021-06-02 19:09:43

Adsorption capacity refers to the amount of adsorbents adsorbed on the adsorbent per unit mass under certain conditions. It is usually expressed in terms of K adsorbents /kg of adsorbent or mass percentage, which is a sign of the adsorption capacity of the adsorbent.

In industry, the amount of adsorption is called the activity of the adsorbent.

The activity of the adsorbent can be expressed in two ways :(1) the static activity of the adsorbentUnder certain conditions, the equilibrium adsorption capacity of the adsorbent is its static activity.For a certain adsorption system, the static activity depends only on the adsorption temperature and the concentration or partial pressure of the adsorbed substance.

Dynamic activity of adsorbents wholesale activated carbon pellets 

Under certain operating conditions, the gas mixture by adsorption bed, adsorption by adsorption, adsorption after a period of time, when starting from the adsorbent in the laminar flow of the gas adsorbed mass (or its concentration reaches a specified value), think bed fire, adsorption properties of adsorbent adsorption quantity at this time is called dynamic activity of adsorbent.manufacturers of coconut shell activated carbon in china 

The activity is not only related to the characteristics of adsorbents and adsorbents, but also related to temperature, concentration and operating conditions. Activated carbon is porous carbon material, has a strong adsorption capacity,Widely used in air purification, wastewater treatment and other fields.The reactive nitric acid is placed in an environment to absorb radon gas, and then Y measurement is carried out, which can be pushed

Calculate the radon concentration in the environment.Activated carbon Y energy spectrum is one of the main methods for measuring radon.In 1957, Mirandajr "used activated carbon as an adsorber to measure radon concentrations in the atmosphere;Since then, many scholars have carried out a series of theoretical and experimental studies on the method of measuring radon on activated carbon, and it has been widely used in the study of radon release rate 23.

In 1986, Lin Lianqing et al. carried out radon measurement by activated carbon.

In 1993, China promulgated the national standard 5 for the method of measuring radon by activated carbon V energy spectrum. Since then, this method has been popularized and applied in China, and has achieved satisfactory results in the determination of radon release rate and radon concentration in air L6-8.The radon measurement by activated carbon mainly measures the energy spectrum peak of 2Pb or 21Bi, and the radon concentration value is calculated from the net peak area. This method can distinguish 2Rn daughters, which is convenient for attenuation correction, and has a strong anti-interference ability for other Y radiators (such as 2Rn and its daughters, etc.).However, it requires high energy resolution and low counting rate.

The theoretical basis, attenuation correction and standing time of this radon measurement method are discussed. 


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