Adsorption

The condensation of gases, liquids, or dissolved substances on the surfaces of solids. It includes adsorptive phenomena of bacteria and viruses as... | Review and cite ADSORPTION protocol, troubleshooting and other methodology information | Contact experts in ADSORPTION to get answers

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Questions related to Adsorption

How can we analyze adsorption of polymer with metal or any environmental toxicants using computational tools?

Hello, I am trying to find the solution for the adsorption energy calculation of polymer with any of the chemicals or metals, for this calculation, I am using the adsorption locator module of the...

28 September 2021 7,535 1 View

How to enhance the adsorption capacity of heavy metal?

Hi I am working on removal of heavy metals from the wastewater using nanocomposite membranes. Although the heavy metal removal is above 90% but adsorption capacity is low. Can someone please guide...

20 September 2021 7,298 13 View

Aspen adsorption: Temperature Vacuum Swing Adsorption?

Dear all Hope you are well. I'm at the stage where I could study TSA (Temperature Swing Adsorption) and PSA (Pressure Swing Adsorption) separately, but I want to study the combined system of...

17 September 2021 7,055 2 View

How to calculate Cqe value in (mg) from % adsorbed amount?

I'm working on I2 adsorption by Zr-MOF, I dissolved 30 mg I2 in 50 ml n-hexane then add 30 mg Zr-MOF after certain time I measured the absorbance (UV) and make different points. The adsorption...

16 September 2021 6,417 3 View

During my adsorption experiment of carbon aerogel material I obtained good amount of CO2 uptake in my material even though surface area is less ?

Surface area of material has correlation with adsorption uptake (H2 or CO2 uptake) in a material (Chahine's Rule) but in case of my synthesized material I am not finding the same correlation even...

30 August 2021 5,400 5 View

Anyone who have experience on Phosphorus adsorption experiment?

I did phosphorus adsorption with an initial concentration of 25 Pmg/L, by biochar dosage of 5 grams in 100 ml phosphate solution, finally, I get 8 Pmg/L, which is logically high but by the...

20 August 2021 2,550 5 View

Why are there two main peaks in carbon monoxide IR spectrum?

I am doing CO adsorption experiment. When I collect the CO gas phase spectrum there are two peaks for CO. One at around 2114 cm-1 and the other one is around 2170 cm-1. I don't know the reason why...

17 August 2021 8,829 3 View

What is the pollutants fate after adsorption and regeneration?

Emerging pollutants such as pesticides, pharmaceuticals, and endocrine disruptors are toxic and their presence in the aquatic environment threatens living organisms and human health. After the...

13 August 2021 4,929 11 View

How to prevent the precipitation of Pb while adjusting pH for adsorption studies?

I am performing Pb batch adsorption experiments. While preparing the working solution and adjusting the pH of Pb solution, the solution precipitates at pH above 4. Another issue that i am facing...

13 August 2021 6,669 8 View

What is the pollutants fate after adsorption and regeneration ?

Suppose that if we adsorb toxic elements such as textile dyes, pesticides, heavy metals, and/or endocrine disruptors that disrupt the hormonal systems of humans and aquatic animals, what would be...

12 August 2021 1,979 6 View

How can one ascertain that the dye compound is removed/adsorbed from the aqueous solution and not colour only?

In removal of dye from an aqueous system, mostly adsorption procedure is applied. Decrease in colour intensity is usually observed. So at the equilibrium time, it is concluded that adsorption of...

09 August 2021 6,199 7 View

How to model binary adsorption data and calculate R^2?

I am doing single and binary adsorption experiments (adsorption of liquids). I was wondering how to fit binary adsorption data to non-modified Langmuir isotherm model? Also how to fit binary...

06 August 2021 8,803 3 View

Can pH be decreased during the adsorption process?

I'm studying heavy metal adsorption with some absorbents. But At the adsorption isotherm experiment, The pH decreased by increased concentration in the solution... Is it normal Common...

23 July 2021 408 9 View

How can i calculate zero-point energy (ZPE) correction using CASTEP?

I am doing some adsorption on the surface and would like to correct the total energies

21 July 2021 4,237 1 View

What does this peak at 2360 cm-1 correspond to in the FTIR spectrum?

I had synthesized MIL-101(Cr) and performed batch kinetics study with dyes. After the kinetics study, I had dried the samples and performed FTIR studies and got a new peak at 2360 cm-1. I couldn't...

20 July 2021 8,348 4 View

Qe (adsorption capacity) lower than zero?

I am working on adsorption of organic molecules on titanium dioxide nanoparticles, using cerium sulfate to oxidase the molecules. I noticed that increasing the concentration the qe values goes to...

20 July 2021 7,110 6 View

Is there any energy decomposition analysis for covalent interactions?

Hello everyone! I am looking for a way to analyze the interaction of a gas with the adsorption site of a solid. SAPT seems very attractive for non-covalent interactions but when the adsorption...

19 July 2021 3,263 3 View

Can we get value of adsorption constant in exponential form?

Can we get value of adsorption constant in exponential form through BET adsorption isotherm?

08 July 2021 7,479 1 View

In BB dye adsorption using graphene, for different adsorption temperatures why the isotherm shifts from freundlich to langmuir?

I have done adsorption studies of brilliant blue dye using graphene as adsorbent for different temperatures. for 20 and 30 C, the R2 value of freundlich fitted well whereas for 40 C, R2 value of...

03 July 2021 1,497 5 View

How to make a chemeical bonding between inert support materials and TiO2?

Mineral supportd TiO2 composite was intensively studied, but nano-TiO2 was immobilized on surface of mineral by physical adsorption in most cases. The result was that TiO2 NPs ease to peel off...

27 June 2021 7,210 5 View

How to use 'user procedure' on Aspen Adsorption?

Good day. I would like to use my own isotherm equation on Aspen Adsorption so I found out that I can use 'user procedure'. However, when I run my simulation, I'm getting an error message "No...

25 June 2021 4,637 7 View

Why the desorption points of Ag-based Coordination-Polymers stopped at 0.3 P/P0 ?

Why the desorption points of Ag-based Coordination-Polymers stopped at 0.3 P/P0, it should come down to at least P/P0=0.1. some examples of the N2 adsorption/desorption isotherm which was...

25 June 2021 1,154 3 View

How to Setup a reactor for CO2 adsorption using ZSM-5 zeolite as an adsorbent?

1. I want to measure the efficiency of the ZSM-5 zeolite adsorbent but confused at how to measure the flowrate of inlet and outlet CO2 and its pressure. 2. Can someone help me with the actual...

15 June 2021 3,319 9 View

Is there any relationship between the amount of adsorption energy and type of adsorption?

Hi in DFT calculations, after calculating the adsorption energy, in the absence of the solvent, is here any relationship between the range of the adsorption energy and the type of adsorption...

11 June 2021 5,491 7 View