Organic Waste Gas Adsorption How To Calculate The Dosage of Activated Carbon
Here is the Activated Carbon Supplier to share with you how to calculate the amount of activated carbon for exhaust gas adsorption, I hope it will be helpful to everyone
1. Calculation of the amount of adsorbent (activated carbon):
Activated carbon mainly occurs by physical adsorption, most of which are single-layer molecular adsorption. The adsorption amount and the concentration of the adsorbate obey the Langmuir monolayer adsorption isotherm equation: α=kθ=kbp/(1+kbp).
Where: (Coverage) θ--the fraction of the area occupied by the adsorbed molecules on the solid surface to the total surface area at a certain temperature; p--the partial pressure of the adsorbate in the gas phase; b=k1/k2--adsorption and The ratio of the speed of desorption; a--the amount of gas adsorbed on the solid surface.
2. The adsorption capacity refers to the amount of adsorbate adsorbed on a unit mass of adsorbent under certain conditions, usually expressed in kg adsorbate/kg adsorbent or mass fraction, which is a sign of the adsorption capacity of the adsorbent.
The amount of Activated Carbon adsorption in the industry is called the activity of the adsorbent, and the activity of the adsorbent is expressed in two ways:
1.The static activity of the adsorbent: under certain conditions, the equilibrium adsorption of the adsorbent is its static activity when it reaches equilibrium. For a certain adsorption system, the static activity depends only on the adsorption temperature and the concentration or partial pressure of the adsorbed substance.
2.The dynamic activity of adsorbent: under certain operating conditions, the gas mixture by adsorption bed, adsorption by adsorption, adsorption after a period of time, when out of the adsorbent laminar stripping began to find adsorbate concentration, think of bed layer failure, adsorption properties of adsorbent adsorption quantity at this time is called dynamic activity of adsorbent.
The activity is not only related to the characteristics of adsorbents and adsorbents but also related to temperature, concentration, and operating conditions. The kinetic activity value of the adsorbent is the main basis for the design of the adsorption system.
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