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What is the normal ash content of activated carbon?

  1. What is the ash content of activated carbon?

The ash content of activated carbon is an important standard item in the detection of activated carbon chemical properties and is included in the evaluation index for activated carbon selection. coconut shell based steam activated carbon Among the current international testing methods for activated carbon, only the determination of ash and pH can barely fall into the category of chemical property analysis.

When the "chemical nature" of activated carbon is considered to be "chemical purity" (this tendency mostly exists in the application industry of activated carbon), sometimes the ash content and volatile content of the activated carbon are included in the detection category of the chemical properties of activated carbon.

  1. What is the ash content of activated carbon?

There are two types of activated carbon dust, one is surface dust, and the other is internal dust. The ash powder of activated carbon we usually say refers to the internal ash powder, which can be divided into acid-soluble matter and alkali-soluble matter.

Ash content mainly includes: silicon dioxide, aluminum oxide, iron oxide, calcium oxide, magnesium oxide, titanium dioxide, sulfur trioxide, potassium oxide, sodium oxide and phosphorus pentoxide.

  1. What is the ash content of activated carbon?

In addition to carbon, the chemical composition of activated carbon also contains two substances. One is chemically bonded elements, such as oxygen and hydrogen; the other is ash, which varies with the type of activated carbon.

The ash content and composition of different types of activated carbon are very different. For example, taking coconut shell activated carbon as an example, this type of carbon has an ash content of about 3.5%, which contains potassium, aluminum, silicon, sodium, and iron oxides and a small amount Of magnesium, calcium, boron, copper, silver, tin and trace amounts of lithium, gallium, lead, etc.

The ash content of coal-based activated carbon is mainly related to the ash content, moisture and activation degree of the raw materials. The relative content of ash in activated carbon increases with the degree of carbon activation of raw materials.how to make activated charcoal pellets The coconut shell carbon ash content is less than 3%, while the coal-based activated carbon ash content is as high as about 10%. However, whether it is coal-based activated carbon or coconut shell activated carbon, it can be pickled or The alkaline washing ash content is reduced to 2%.

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