Carbon Active Production Process
Carbon active has different properties with normal carbon. General carbon can contain of many material inside, not just carbon, but many impurities like several gases that trapped inside the pores. Carbon active or activated carbon can be produced in step process.
Carbon active have high porous structure, distinctive kinds of carbon can be made if carbon is subjected to high temperature and pressure, with the size of its porous varying dependent on the gases used during activation and inorganic salts that were added before the activation procedure.
Carbon active can be produce from carboneous materials such as coal, peat, wood or nutshells (i.e coconut shell). The manufacture process consist of two phases, carbonization and activation. Carbonization process include drying and then heating to separate byproducts like tars and other hydrocarbons, as well as to drive off any gases generated. Carbonization process can be completed by heating the material at 400 to 600 oC in an oxygen deficient atmosphere that cannot support combustion.
The result of the above process then apply into activating agent like exposing them into steam at high temperature. The steam burn off the decomposition products from the carbonization phase to develop a porous product, three dimensional graphite lattice structure. Longer exposure time result in larger pore sizes. The most popular aqueous phase carbons are bituminous based because of their hardness, abrasion resistance, pore size distribution, and low cost, but their effectiveness needs to be tested in each application to determine the optimal product.
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