How To Make Activated Charcoal Using Coconut Shells?

Coconut shell activated carbon is a common adsorbent. It has a very strong adsorption force, often owned water treatment, air purification, agriculture, and forestry production and other change industry fields. It is a black porous only, colourless and odourless. The production process of coconut shell activated carbon is very complicated, and each step is crucial.

Coconut Shell Activated Carbon Production Process

Collecting Coconut Shells

Collecting high quality coconut shells is the most important part of making coconut shell activated carbon. Based on past experience, the best coconut shells are typically found in tropical areas near the ocean. The quality of the coconut shells is even better if it is fresh. In addition, the size, shape, and maturity of the coconut shells will affect their quality. If you want to make high quality coconut shell activated carbon, the key lies in how to choose the best quality coconut shell.

 

Coconut Shell Grinding

Crushing and grinding coconut shells is an important part of making coconut shell activated carbon. The coconut shells are compressed into a granular form. At the same time, using a drum sieve machine, sorting and filter out impurities. Finally, it will be crushed by roller milling machine.

 

Pre-Treatment of Coconut Shell Pellets

After grinding, the granular coconut shells need to go through the process of steaming, drying and purification first. Ensure that there are no other impurities in the coconut shell powder or granules. Ensure the production of high quality coconut shell activated carbon later.

 

Coconut Shell Carbonisation

Carbonisation is the most critical part of the whole production process. This process needs to be carried out in a high temperature environment to carbonise the coconut shell particles. The pre-treated coir particles are fed to a continuous carbonisation furnace for carbonisation. The carbonisation temperature is usually controlled at 500-800°C. The carbonisation time depends on the type of pellet. The carbonisation time needs to be adjusted according to different types of carbonisation furnaces. After high temperature carbonisation, black coconut shell activated carbon is finally obtained.

 

Activation of Coconut Shell Carbon

Activation is the last part of the whole process and a key step. During the activation process, the carbonised coconut shell particles need to be suspended in an alkaline aqueous solution first, followed by steam oxidation and activation air. In this way, more tiny pores are formed on the surface of the coconut shell activated carbon, thus improving its adsorption capacity.

 

The above is the process of making coconut shell activated carbon. It should be noted that: the production of activated carbon requires many links, which need professional and technical personnel to operate. Especially need to control each link parameters, such as: carbonisation temperature, time, activation treatment and other fine adjustments. Only then can we make high quality coconut shell activated carbon.

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