Coconut shell activated carbon is made from high-quality coconut shells through carbonization, activation, and refining processes. The product has developed pore structure, large specific surface area, strong adsorption capacity, low impurity content, and renewable use. Widely used for deep purification of various types of drinking water, industrial circulating water, boiler feed water, electronic industry, beverage, and food industry water.
What are the main factors determining the adsorption principle of coconut shell activated carbon.
1. The adsorption properties of coconut shell activated carbon are that the larger its surface area, the stronger its adsorption capacity. Coconut shell activated carbon is a non-polar molecule that easily adsorbs non-polar or very low polarity adsorbates. The size of coconut shell activated carbon adsorbent particles, the structure and distribution of pores, and surface chemical properties also have a significant impact on adsorption. The properties of the adsorbate depend on its solubility, and the adsorption of different pollutants by the same type of activated carbon also varies.
2. The pH value of wastewater, coconut shell activated carbon generally has a higher adsorption rate in acidic solutions than in alkaline solutions. The pH value will affect the state and solubility of the adsorbate in water, thereby affecting the adsorption effect.
3. Coexisting substances, when multiple adsorbents coexist, coconut shell activated carbon has a poorer adsorption capacity for a certain adsorbent than when it only contains that adsorbent.
4. The external temperature, within a certain temperature range (usually between minus 30 ℃ -40 ℃), the higher the temperature, the faster the adsorption rate and the better the adsorption effect. In general, due to high temperature, the speed of irregular motion of molecules will increase, and the molecular dynamics will also increase, thereby promoting faster absorption and adsorption of coconut shell activated carbon.
5. The adsorption capacity of coconut shell activated carbon is directly proportional to the time of contact with the adsorbent. The longer the contact time, the better the adsorption effect. It should be ensured that coconut shell activated carbon has a certain contact time with the adsorbent, so that the adsorption is close to equilibrium and the adsorption capacity is fully utilized.
6. The adsorption capacity of coconut shell activated carbon is related to the concentration of harmful gases, and the higher the concentration of harmful gases, the more obvious the adsorption effect of coconut shell activated carbon.
The adsorption capacity of coconut shell activated carbon depends not only on its pore structure, but also on its surface chemical properties, which determine the chemical adsorption of coconut shell activated carbon. The different surface chemical properties have a significant impact on the acidity, adsorption selectivity, catalytic properties, and electrochemical properties of coconut shell activated carbon. Therefore, the study of the surface chemical properties of coconut shell activated carbon has also received high attention.
