Dear Mohammad,

I suggest you reading the following chapter on the subject.

Chapter Low-Cost Materials with Adsorption Performance

Regards

Bachir ACHOUR

Dear @Mohammad,

I totally agree with the answer given by Hassen. There is no material which can be considered as such, per se.

However, for in depth reading, you might want to check a relevant selection of papers on the topic crafted from Elsevier here: https://www.sciencedirect.com/topics/engineering/adsorbent-material

Wow Thank you all for sharing

high purity activated charcoal powder!

High purity activated carbon.

Wow some mentioned carbon materials such as charcoal and activated carbon

I could say that most papers presenting new adsorbents highlight the limitations and low adsorption capacity of these standard ones to start their researches

Laura Bulgariu Fritz Sager Ali A. Al-Homaidan Pushpa Jha

Thank you all for sharing

May you please explain from which perspective

For instance I m more into adsorption capacity in this discussion rather than availability and low cost

It depends what material is to be adsorbed.

There is no adsorbent considered as the best because it depends on what is to be adsorbed. But generally many use high purity activated charcoal powder as an initial material.

For instance

Arsenic metal ion

First, there is no adsorbent is the best for all times.

But if you need a good adsorbent, I recommend Clay minerals and activated carbon.

Nothing can be claimed as best. It may be comparative.

generally, modified activated carbon

It is always depend on the type of materials to be adsorbed.

how come

I agree with the answer that was provided by Dr. Jasim Hassen .

It will truly depend on what you are looking to adsorb. Typically you are looking for a material that is highly porous with a large accessible surface area. Activated carbon is commonly used for this but there are many new materials emerging that prove to be much better (such as zeolites and metal-organic frameworks). Hope this leads you in the right direction!

No reasonable answer exists to your question. At first you have to identify what compound should be adsorbed. According to the quality of adsorbed material you can select the most suitable adsorbent.

Best regards

Vit

Yes,

Activated carbon has been reported to have a better efficiency for adsorption. But, as experts have rightly pointed out above, it is tough to classify one adosrbent as the best.

Nothing adsorbent material is the best for all ions or compounds. there are many wonderful adsorbent like graphene oxide and its derivatives also chitosan and its derivatives and also many but its depends mainly on the type and properties of the ions or the materials to be adsorbed

Best regards

Activated carbon is one of the cheapest and widely used adsorbent, which can be utilized to remove large variety of pollutants.

I agree with Saddam Al-Mahmoud, if you have to choose, you cannot find a universal adsorbent better than activated charcoal.

Activated carbon might be the most economic and feasible material for adsorption.