To asses the success of of prepared adsorbent what isotherm it should follow? I mean there are lot of isotherm studies describing different methods of adsorption out of them which is considered as the best so a to manufacture an adsorbent commercially?
A good sorbent should have:
1. High breakthrough capacity (working capacity).
2. High adsorption and desorption rates (fast kinetics).
3. High selectivity toward the targeted species.
4. Can be regenerated easily.
5. Low cost.
6. Good stability.
Hello Rumi
What do you mean by commercialisation, would you like to sell a synthesised material or would you like to buy or purchase an effective adsorbent product. Let's take that you are a buyer, the most important cŕiterium is your budget. At research level you may find highly performant adsorbent with very high adsorption capacity.
There are lot of isotherm models ( such as Langmuir) to describe one method which is in your study the process of adsorption.
Take care
Actually, by commercialization i meant for an ideal adsorbent what isotherm be it langmuir, freundlich, Temkin, what is more better/advantageous if we want to produce it in large scale.
Hello Rumi
If I understand well, you want to produce it in a large scale. This automatically means that you have prepared it at a laboratory scale with a set of Optimal parameters. If you want to extrapolate to the industrial level.If you are a laboratory researcher you can't do this job by yourself.
Take care
A good adsorbent material should possessed the following characteristics;
1. Ease and low-cost production.
2. Sufficient high surface area and pore volumes.
3. Good stability under harsh environment of moisture, thermal and chemical attack.
4. High adsorption capacity.
5. Ease of regeneration and reused.
6. Good Repeatability and reproducibility.
By comparing isotherm at lab scale you can not decide on the performance of the absorbent.
Besides the aforementioned criteria (production and operational cost, regenerability, selectivity toward the desired compound) physical and chemical stability should be considered non of which are shown in isotherm. In my part, the isotherm might only be useful in giving and insight into adsorption capacity which differs in lab and industrial level.
The most important criterion is targeted pollutants.
Indeed, an adsorbent such as activated carbon will be very efficient to adsorb aromatic pollutants (toluene, xylene, etc.) but it will absorb very small amounts of aldehydes (formaldehyde acetaldehyde, etc.).
Getting the isotherms for the targeted pollutants would be a plus.
The ideal would be to plot a breakthrough curve of your adsorbent for a cocktail of pollutants with realistic concentrations.