Description
Acid-washed coconut shell activated carbon, free of solubles.
Coconut shell activated carbon tends to be microporous and adsorbs more efficiently the low molecular weight organic contaminants that are most present in well water. When washed with acid, ashes are removed, resulting in a purer activated carbon, as pores are freed and the effective surface area for adsorption of contaminants is increased.
All activated carbon of vegetable or mineral origin contains inorganic salts and elements, some of which are soluble in water. These come from the vegetable originating from coal. All vegetables contain minerals that remain in the product when the plant is carbonized.
Many people tend to confuse the term “solubles” with the term “ashes” erroneously, as they are concepts that are linked to each other, but should not be understood and used indiscriminately in this context. Ashes are all acid-soluble and acid-insoluble inorganic compounds or elements that are foreign to the material in question. Soluble is only the acid-soluble inorganic part, since every acid-soluble substance is soluble in water.
Acid-washed coconut shell activated carbon applications:
Purification processes can be affected by small amounts of soluble salts, modifying parameters such as pH, conductivity, and color of the fluid to be treated. The existence of soluble salts can increase the conductivity of the water, which is undesirable if the purification process is intended to obtain water with low conductivity levels, such as the generation of demineralized or ultrapure water. High conductivity may signal the existence of ionic impurities that need to be removed to meet water quality criteria. Acid-washed coconut shell activated carbon is commonly used to remove heavy hydrocarbons from recovered condensate.
