Langmuir Isotherm || How to apply Langmuir isotherm to experimental data || Asif Research Lab
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- Опубліковано 5 жов 2024
- Hi, guys in this video the adsorption experimental data was inserted into Langmuir's isotherms to undertake the adsorption capacity of the adsorbents.
How to apply Pseudo 1st order : • Pseudo-1st-Order Model...
How to apply Pseudo 2nd order : • Pseudo 2nd Order Model...
How to apply Freundlich isotherm : • Freundlich Isotherm |...
How to apply Temkin isotherm : • Temkin Isotherm || How...
How to find △G°, △H°, △S° : • Thermodynamic paramete...
#LangmuirIsotherm #AdsorptionIsotherm #LangmuirModel #LangmuirAdsorptionIsotherm
#SurfaceChemistry
Thank you so much for sharing this ! You have no idea how helpful it was for my thesis! Really appreciate when people share their knowledge
You are welcome... And its pleasure for me that it is helpful for u.
Sir please make a video on how to calculate ce
You cannot imagine how much I was looking for this application, I am not a chemist, but an engineer and I had a lot, but a lot of difficulty. Thank you. I'm in Brazil
Welcome
this video is really helpful. Thanks Asif Research Lab!
Most welcome!
Bro thank you so much I did this for 2 day and can't finding my own way to solve this..you just boost my mood🤣😍...thank you for this tips
Welcome
Thank you for sharing your knowledge, you are helping me a lot 🙏
Welcome
to determine the RL value, why you chose the Ci value just 50? There are 6 experiments, so it would be 6 Ci, please can you explain?
yes plzz tell i am slso confused
Hello, did you ever get the answer to this question?
The isotherm model has been explained in details and very east steps. Well done
Thanks
Hello sir give your contact number
Very nice
@@KhilawanPatelOnlineClasses thanks
@@KhilawanPatelOnlineClasses you can contact me at ..asifayub871@gmail.com
Thank you so much asif
I have a question how we can calculate ci for RL? In video ci for RL is 50, can you give naumerical example ?
I am writing a paper as part of my masters project and part of the data collection involved isotherms. I could not grasp how journal articles that had done similar work had calculated KL values etc for their papers. So I just wanted to write and thank you for this video!
welcome
The best video I've watched so far.
Thank you
Thanks
Thank you so much, I was really struggling with this subject, thank to your video I was able to understand! Congratzz!
U r Welcome dear.
This helped me so much for my master thesis - thanks alot and greetings from Vienna!
Welcome dear.
@@AsifResearchLab One question: If working with excell instead of origin you can just use the trendline function for intercept, slope and r square, right?
@@fridtjofsobanski359 not sure but excel can also be used to find out these values
@@AsifResearchLab Bro Will you please share your mail ID
@@SuperSimran14 asifayub871@gmail.com
Thank you very much for uploading these isotherms plotting videos. They were very clearly explained. With very much appreciated.
Welcome
Thanks very much dear sir. You beauty it's helpful for my work. But I have few questions if you please answer to me
Hello there.
This helps me a lot :) I appreciate your video.
I have questions about RL
First of all, what does RL mean? (If RL is large, what kind of phenomenon occurs?)
In case of Langmuir isotherm model, there are lots of equations.(I saw 5 equations)
In different equations can I use the equation of (RL = 1 / (1 + Ci * KL))?? or do I have to change equation?
If so, how can I change the RL equation? (ex. (Ce / qe) = (1 / qm)*Ce + (1/(qm * KL)) )
Hello! M just confused about Ci value that was put into RL formula, how did you select 50 for that?
This conc (50ppm) was optimized. This depends upon some factors like
1- The behavior of your absorbent toward low and high conc.
2- conc of that metal in environmental samples
@@AsifResearchLab does it mean that it's a concentration of any adsorbate at equilibrium , qe?
@@anurana6349 this is not the qe it is Ci. you can take Ci according to your adsorbate and adsorbent
@@AsifResearchLab okk thank you Asif ☺️
Hi My project is related to adsorption process.... So I used adsorption isotherm. Can I get the excel sheet... Please
Thank you so much, sir. It will help us a lot.
Thank you so much... Finally I understood!!
welcome
thank you for the great efforts, really appreciate your work
Thanks
I have gained a good knowledge from your video
Pleasure for me.
Sir Kindly le me know. I got negative log qe value. This has no incorporation further in any formula. Should i ignore it?
thanks for making isotherm model easy for us to apply for our experimental data
Nicely explained!! Thank you very much!!
You are welcome!
Thank you so much sir for such a fruitful information
Welcome
I have a question that, why we take Ci = 50 g/L for the calculation of RL?
I have the same question , he didn't explain why, though it's important
All initial concentrations should give you a value of 0< RL < 1, RL less than 1 or greater than 0, to confirm that the adsorption process is favorable. Just chose one value as you like
@@salaheddine7483 All initial concentrations should give you a value of 0< RL < 1, RL less than 1 or greater than 0, to confirm that the adsorption process is favorable. Just chose one value as you like
Thanks a lot sir.its a really an informative video.i have one question that how can we find final concentration i .e. Cf from initial concentration Co while determining RL values.
my question too...sir please say something about it.
Great video! Just confused about one thing how do we know the relation between Qmax and K contants with slope and intercept? As you brought the formulas did u derive them?
And plz also upload dubinin and flowry huggins.. thanks in advance
Maria thanks for your valuable comment. Yes you can derive the slop and intercept formula from the main equation. Yes working on other models also and will be uploaded soon. Thanks
Thanks a lot sir... u really helped me
Thanks
Thanks a lot. It's clearly explained.
Thanks for your videos. I have a question about Ci when you calculating RL, why did you choose Ci =50? I read all the comments and saw some similar question. Would you please explain further? Thanks.
This is optimized initial conc. Adsorbent showed maximum removal efficiency at 50.
They started study using initial concentration 50 ppm
@@AsifResearchLab no it could not be.. at 10 ppm it is max
So, in ur case 10 ppm is ur optimum value.
@@AsifResearchLab is there a formula to find the optimum value?
Hello, im using response surface methodology for the batch adsorption process and have about 17 runs. How am i going to select the number of experiments for the calculation of the langmuir isotherm?
Optimize ur parameters
I have a question
in your adsorption experiment, you change the concentration of adsorbate from 10 to 500 mg/l and used a constant amount of adsorbent 0.15 g then you calculated qe for all concentrations is that right please explain ??
Yes
@@AsifResearchLab please explain
Thank you very much. Valuable video.
Always welcome
Sir Jo ap ny Q max fine Kia he us me initial Conc. Ap ny 50 hi ku choose ki ?? Halan K different experiments ki initial Conc. Different thi
different factor hn
How to theoretically calculate adsorption when I can't perform any experiment?
Thanks a lot sir was searching for this for a long time .
Thanks for your nice work. Do you know how to calculate Ce by absorption band in UV spectrum? And can you share a copy of your excel file with me? Thanks again.
Very helpful thx for sharing this video
Thanks
thanks for this video but why do you use the linear fit instead of nonlinear one
Thanks. This data followed linear.
Thank you very much. Can you share the EXCEL file in the video? There are many formulas used in adsorption experiments and material analysis.
thank so much bro for this helpful video
welcome
May i ask u. where Ci from? in RL = 1/1+Ci*KL
You saved my life😁👍👍👍
Its honor for me.
Do you have a video for "How to determine the final concentration Ce (mg/L)" Thank you. Regards
Will be uploaded in couple of days.
@@AsifResearchLab
Please.. I have got one question. When you calculated RL.. Why did you choose 50 like Ci ?
Because you have at least 6 Ci.. but you choose 50.
@@wilsonibeaho4788 Esto vine a buscar aquí. lamentablemente no hay respuesta :L
Sir, I wanted to know when we should use Lamgmuir and Freundlich or both on an adsorption study. I'm working on lead and chromium adsorption from their aqueous solutions. Can I use both the isotherms or Langmuir only?
Only one model will explain experimental data and adsorption process...apply Langmuir if it fitts best then ok..if not then apply Freundlich..if it also don't fit then apply temkin ...this is the way u proceed.
@@AsifResearchLab Sir, I applied both the isotherm model and both of them fitted well. So can I represent both the isotherms in the research paper? Or, it's wise to show only one isotherm?
One.
salaam sir ,many thanks
two months ago ,I asked you about set up video for analysis zeta carve and how calculating particle size via zeta data ? are you like do it? you promise have try .
Thank you so much for your help 🙏👍
Welcome
Your videos are very helpful. Can you please add fitting pseudo particle diffusion model
Thanks. Yeah sure very soon in sha Allah.
@@AsifResearchLab Thank you. It would be so useful in my thesis.
Also if you can also tell us to calculate Boyd coefficient and mass transfer model.
I was looking for it for quote long
Please make another video showing Freundlich adsorption, variation with pH, kinetics.
Please visit this channel you will find the above mentioned vedios.thanks
Can we use Langmuir Isotherm and Freundlich isotherm for adsorption with different dosage but with constant initial concentration, pH, contact time and temperature?
Yes, but normally we use optimum dosage of absorbent.
@@AsifResearchLab I see, thank you very much
subscribe the channel also. Thanks
How to prepare viva for physical chemistry?? Which topics are important or relevant??
Level?
@@AsifResearchLab ms. C
Where can we see the data you are working from? I do not see where you got your volume measurements.
Thank you
This is experimental data.
Hi, thanks your job
please can set up video about zeta potential calculations , and design expert software like RSM table and response surface methodology ... regards
Welcome. I will try
Very helpful video. Can we do this in simple excel sheet. Please answer
If u can find the valu of intercept and slop.
Thanks. Kindly let me know on which soft ware you have first write the values before using origin 2019 b. Is it Excel sheet or somethinf else?
@@simplifiedscienceeducation5234 that was an Excel sheet.
Hello sir
My intercept is negative and I don't understand why ... Pls help... Much thanks to you
Hello sir, this is shahzadi sadiya. In your langmuir isotherm video you stated that the Qmax value is reciprocal of intercept where in the paper analytical method doi 10.1039/c3ay41000e they report Qmax value is reciprocal of slope. may i know about this.
Review some more articles
Could you explain how to find the equilibrium concentration?
when adsorbent stop adsorbing further metal ion form water and there is no change in concentration of metal ion in solution with the passage of time. that would be your equilibrium conc
Respected Sir, the videos are really helpful, will you please make a video concerning the calculation and plotting of desorption efficiency and kinetics
Yes, soon
Sir, Thanks for the video. I have a small doubt. In a few articles, they are mentioning % error along with R2 values, how is it calculated? here in this video, there are standard errors associated with both intercept and slope values, so which one do we need to consider?
Thank you Sir for this video. I need to ask one thing my intercept in coming negative. is it ok ?
because my Qmax is also negative then. or i have to ignore the negative sign
my graph is linear
-ve value of intercept has no physical meaning. Repeat ur experiments or use another adsorption model for ur data.
@@AsifResearchLab where do you think the problem will be
Why u have taken 50 as Ci in RL calculation?
See in other comments.
I have data adsorbent, lead, shaking speed and time
Can I use adaorbent ( ci) , lead ( ce) ?
Ci would be the initial conc of lead and Ce will be the lead conc after equilibrium.
Do you mean the Ci is the optimum initial concentration and Ce is the optimum concentration at equilibrium under the effect of initial concentration
While calculating RL why you've used Ci as 50 ?
Several factors.
Could you explain it why choose 50 as the initial concentration to calculate RL value?
I would like to know that too... Can you please explain why to choose 50 as Ci value to calculate RL?
Optimized conc
Hello sir, i have a question. while doing adsorption experiment can we do without using shaker
Yes. U can use Coulmn
sir can u explain briefly
read one article on column adsorption of metal ions. Hopefully you will get the basic idea of column adsorption
wonderful explanation
Thanks Respected Sir.
What meaning if we get KL < 1 or KL >1 ?
Really appreciated dear
Thanks
Well done 👍 sir
Thanks
Can you please explain extended Langmuir isotherm
which initial concentration to take in langmuir isotherm to find the RL
same question
did you find the answer ?
Thank you so much.
Welcome
Hlo sir, your video is so helpful......will you please make video on redlich Peterson model
And also 3,4 variable model??????
Thanks, sure
How to substitute the values in Langmuir formula
little elaborate your question
Hello sir ,
Why you have taken ci=50 in RL
please explain sir
optimized value
@@AsifResearchLab sir how to find optimized value??
Please make video langmuir (Qe Vs Qe/Ce)
how do you take the value of W ? how do u take it as 0.15g?
W is the optimized amount of adsorbent. I took 0.15 g during my batch experiments. It depends upon you how much adsorbent you take.
Sir , please tell me about the formula to find the final concentration of the compound by absorbance
Tonight vedio will be uploaded
@@AsifResearchLab thanks a lot..I have seen your all isotherm model. Very useful it is. I have seen you have show final concentration of Compound but I wanted to know how you wrote final concentration.Thanks for it 🙏🙏
Sir, I have to see the absorbance of uv visible for dichloromethane as a compound in a solvent methanol in an adsorption experiment. First I run pure dichloromethane to full range of uv visible 190 nm-1100nm to see at which wavelength its peak is seen ,its highest and clear peak seen in 208nm. But in literature there is range of DCM is 233nm, and highest 274 nm. Now I am confused what range I have to fix for my samples. Please guide me.
@@AsifResearchLab please upload video, in your Languir isotherm, you have started with initial concentration and final concentration. How you calculate final concentration values.? Please tell
@@anjalisharma314 Final conc was determined my using atomic absorption spectrophotometer AAS.
Hello sir , i want to know how to do metal adsorption process . We dont have AAS .
H can find conc of unknown sample by UV.
Metal adsorption by batch process or column
@@AsifResearchLab Batch process means?
Shaking of ur adsorbent in contaminated water sample by any mean. See my vedio of PZC where batch process was illustrated.
Dear Dr. Asif, I am working in H2 adsorption and I would like your cooperation in my work through make the kinetic studies for our work. I would be appreciated if you accept ,,, regards
Contact me via email . asifayub871@gmail.com
good job Asif
Thanks dear
very Helpful
Thanks
Dear, when you calculate RL (Ci = 50) how
see in comments
Thanks sir, was really helpful
Welcome
Thanks for this video
Welcome
Sir! X please use your sound to explain the process and steps! Because I am new for these software applications.
Yeah sure
I've resin in beaded form. Do we need to grind the beads in order to do solid sample FTIR?
No
No need of grinding
I got negative intercept in regression. what does it mean kindly guide. do we include minus sign of intercept while calculating qmax value?
apply another model
How detect optimized concentration from data
Conc of what ?
How to find Ce ?
Sir? is it okay for the source file that you use I need to know what are the descriptions of the formula used
Hi Sir, where did you get the W?
Mass of adsorbent
well done
Why Ci =50 mg /l ?? To calculate RL??
Due to some factors already described in comments.
Good.
Thanks
Thanks you so mutch
Welcome
Sir please I am confused on how you got the slope and intercept via excel
Sir ,my Langmuir isotherm intercpt value comes negative ,sir what's the reason behind it?Is my experimental data not valid?
There is something wrong with ur data. Rechek it carefully
@@AsifResearchLab sir me to check kr ky thk gy hu mai ne hr trha se chek kiya hai sr ap help kr de plz
Mail ur data.
@@AsifResearchLab sir apka email ??
asifayub871@gmail.com
How can draw three temperature at same graphic
watch video of thermodynamic paprameeters
@@AsifResearchLab if u draw isotherms at different temperatures
How to calculate ce value if a gas adsorbed onto charcoal?