Does activated charcoal absorb moisture?

Spending some time in a moist and humid room, closet, basement, shed, and other areas with limited airflow can be frustrating and uncomfortable. Besides, it can have devastating effects on your health.

But did you know that you can use activated charcoal to absorb and eliminate moisture?

Charcoal is not only useful when you want to fire up the grill or keep root water fresh for plants; it is also a great dehydrating agent. However, you have to choose the right type of charcoal so that it can soak up humidity.

This article explains how this is possible and how you can use activated charcoal to achieve this.

How to use activated charcoal to absorb excess moisture and odors

We’ve previously explained how to use charcoal to purify the air. Using it to absorb moisture is also quite easy. All you need is the charcoal and a tray or other surface to place it on.

Place a few pieces of activated charcoal on a tray and then position them in the area that has a problem with excess moisture. You could even place them on a coffee table or bookshelf, where they’ll appear to be part of your decor.

Alternatively, if you want to be more inconspicuous about it or save on space, you can place a few pieces of the charcoal in old socks, nets or stockings and hang them in hidden spots around the place. The bigger the room or space is, the more charcoal we suggest you use.

It is also important to note that most charcoal comes with additives such as mesquite or other things to make it easier to light on fire. Make sure you are using pure natural briquettes for this procedure.

You have to get the best activated charcoal for this procedure to work effectively.

Charcoal that hasn’t undergone the activation process won’t be effective at absorbing moisture. It may not significantly affect the humidity levels in your home.

On the other hand, activated charcoal will not only eliminate moisture but also prevent the formation of mold.

If you are looking for a long-term solution to the problem of odor and moisture in your home and are wondering how long charcoal absorbs odors, we’re glad to let you know that this might be the solution for you.

Activated charcoal can retain its ability to neutralize odors and moisture for several months. After that, you can still use it again if you reactivate it.

All you have to do is to heat the charcoal on low heat (about 148 to 150 degrees Celsius) for one hour. This reactivates your charcoal and is ready to be used again.

Activated Charcoal

However, replacing the charcoal every few months is best for the best results. Even after you reactivate it, it is still effective. However, it won’t be as effective as before.

Does charcoal absorb water from the ground?

Another common question is if activated charcoal can be used to absorb water from the ground. The thing with activated charcoal is that its ability to absorb moisture depends on its environment. Charcoal depends on humidity and porosity to absorb moisture.

When it comes to water, it is difficult for activated charcoal to absorb it. This is because charcoal can only absorb trace amounts of liquid, for example, humidity.

So unless the water evaporates from the ground, it won’t pull water by itself. Converting water to humidity is the only way that charcoal would be able to absorb it.

Note that charcoal acts as a purifier for groundwater. It binds to impurities in the water, effectively making it cleaner. It also adds nutrients such as magnesium to the water and that’s why it is used in several purifiers, including ZeroWater jug.


Activated charcoal works best as an all-natural dehumidifier to remove excess moisture that could otherwise cause mold, a bad stench in the air, and even health complications from inhaling too much moisture.

It also works well to neutralize bad odors, and is better for the environment than air fresheners and other chemical odor neutralizers.

Just remember when you are buying charcoal for this purpose that you must make sure that it is free of chemicals and additives to make it safer to have around the house, especially if you have children and pets, and make it more effective.

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