How to remove chloride ions from activated carbon? ? Solve
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How to remove chloride ions from activated carbon? ? Solve
They all use activated carbon to remove chlorides – what are you trying to do here? Is it necessary? ? ?
Try regenerating with steam; it’s not necessarily correct.
Washing with water, or using alkali for washing, but it’s very difficult. Most of the time, chloride ions are caused by acid-washed minerals (iron) sticking to them. Therefore, it is difficult to balance chloride ions and iron ions. Imported activated carbon can reduce chloride ions to very low levels, but its price is quite high.
The source of chloride ions in activated carbon is related to the raw materials used in its production and the subsequent treatment processes. If it is due to the relatively high amount of chlorine present in the original wooden material, it is difficult to remove this substance completely, as chloride ions may be embedded within the structure of the activated carbon – that is, in its deep pore structures or framework. Even treatment with high-temperature steam for activation makes it hard to eliminate these ions completely. If some chloride ions remain due to contact with materials during use, washing with weakly alkaline water followed by steam activation can be effective. Note that the temperature for steam-activated regeneration should not be too high; it is best to use steam diluted with nitrogen.