Activated carbon is a porous material that removes organic compounds from liquids and gases in a process known as “Adsorption.” The extremely high surface area of activated carbon gives it the attractive, adsorptive properties to remove volatile organic compounds (or VOCs) from vapor or liquid streams. Activated carbon is produced by thermally decomposing organic or carbonaceous source materials – such as wood, coal, or coconut shells – in a controlled environment. The finished product has an extremely high surface area and can be processed further into specific shapes or mesh sizes (e.g. pellets or granules at a 12 mesh size). Activated carbon can also be impregnated with additional adsorbates to enhance the adsorption of specific VOCs and organic compounds.
Activated carbon utilizes its extremely high surface area to remove contaminants in the process of physical adsorption. At the submicroscopic level, the surface of the carbon pores exerts attractive forces. For certain VOCs, the attractive force of the carbon surface is stronger than the attractive forces keeping them dissolved in the liquid solution or vapor stream. coconut shell activated carbon for Sale For these compounds, the VOC molecule adheres or sticks or “adsorbs” to the surface of the carbon, thereby removing them from the treated effluent stream. Compounds that are ideal for activated carbon adsorption tend to be organic and non-polar and have high molecular weights and boiling points.
An adsorber is a container or module containing activated carbon to remove contaminants from the process stream. Activated carbon adsorbents are effective in industrial applications such as steam emission control and deodorant. In the adsorber, the waste stream is injected into the container with excellent flow distribution and minimum pressure drop. In the carbon bed, VOCs (such as benzene or trichloroethylene) are captured and absorbed into the pores of the activated carbon. Finally, the treated sewage flows out of the adsorber, which meets the environmental requirements and reduces the discharge. https://www.granular-activated-carbon.com
Activated carbon can reach the high removal efficiency of VOC until it reaches its service life and makes a breakthrough. In the penetration process, the activated carbon will no longer absorb organic matter, so it is necessary to remove the waste carbon and replenish the fresh carbon.
After reaching the adsorption capacity of carbon, the waste carbon must be removed from the adsorber and then filled with fresh carbon. Waste carbon can be disposed of or reactivated. Reactivation can recover and reuse waste carbon.