I use the isothemal titration calorimetry (ITC) in my experiences and tensiometry and other methods to study the adsorption phenomena. I hope you put videos about these methods .
May I ask something Sir? why did you decrease the coma, is it for the conversion J to kJ or what? And how about the units of each thermodynamics parameter? Thank You Sir.
Thank you so much for your comment. You are right. To learn more about units, please check out this article: www.researchgate.net/publication/349621377_A_promising_chitosanfluorapatite_composite_for_efficient_removal_of_lead_II_from_aqueous_solution If you have further querry, please let me know and don't forget to subscribe this channel for new videos.
Thanks again for your helpful video. The only problem is how KD is being calculated. Although in some papers, KD has been calculated az qe/ce, in many more papers, KD is actually (C0-Ce)/Ce. I guess the second one must be true to have the correct units. because ln (qe/ce) has not the same unit as ∆S/R and ∆H/RT. These two terms (∆S/R and ∆H/RT) are unitless and thus the other term on the left (ln KD) must be unitless as well. It will only be unitless if KD equals (C0-Ce)/Ce. Thank you so much.
@@ashraffaziz7393even this equation is incorrect. There is a paper that shows how authors have gotten it incorrect while calculating KD value. DOI:10.1016/j.molliq.2018.10.048
hi, i study the co2 adsorption, in your video, Kd=Qe/C, mine is Kd=Qe/P( co2 adsorption capacity/pressure), the question is, can i use the same method as yours to calculate the thermodynamic parameters?
Thank you Dr for this relevant video. But I want to ask you a concern: why did you choose only the experiment run at 298 K to calculate the ΔG? There is a real reason for that? Thanks again.
Thank you so much for your comment and appreciation. I have just shown how to calculate ΔG at 298K. You can follow similar procedure to calculate ΔG value for other temperatures. Please keep watching all the videos, like and share.
similar with Mr Henock question. I was confused about the value of ΔG in reaction. If we calculated ΔG value incrementaly from Temp value (in Kelvin). Which one is the right value of ΔG? Is it possible to average all obtained value of multiplication with temp? Or are there a different equation to calculate ΔG from whole reaction? Thanks for your comment Dr Amin.
Thank you for the video. Your videos have been really helpful for my research work. Could you please share a video on how to perform a calculation of thermodynamic parameters for non linear fit?
Thanks and glad to know that. Nonlinear fitting is not possible for thermodynamic parameters because the equations we use to calculate these are in linear form. please check out other videos & don’t forget to subscribe
@@Aminulchem Sir, I need to perform a nonlinear fit for the thermodynamic study. Is there any literature or published work to which I can refer? I'm also making an effort from my end. Please help me with this. I urgently require assistance. Thank you very much!
@@malapamei13 Thanks. I have not yet done nonlinear fit of thermodynamic study. I will try to make such video in near future. Please keep watching. Please see: www.sciencedirect.com/science/article/abs/pii/S0167732220322467
Thank you so much for your comment. Ce can be calculated using this video: th-cam.com/video/rdj058lMyHU/w-d-xo.html If you have further problem, please let me know & don't forget to subscribe.
Thank you so much for your comment. This is probably youtube algorithm which is recommending my videos. Anyway, please watch videos & subscribe this channel.
Hi, thanks for the video, But I have a question. there are lots of points (qe and Ce) in a specified temperature. if I want to calculate Ke(=qe/Ce), which qe and Ce should I consider in a specific temperature?
Thanks. I have shown Ce =100 mg/L for all cases as an example. But it will differ for different temperatures and Kd = qe/Ce. Please watch all other videos and if you have further queries, please let me know and don't forget to subscribe to this channel.
How we calculate arrhenius factor into the thermodynamic parameters. The factor was calculated with the help of pseudo-second order rate constant by converting unit ''g mg-1 min-1'' to ''g mol-1 s-1''. How we convert? The research paper is "doi: 10.1002/chem.201903875 ''
I have a doubt Sir, for example if i have multiple Ce for different Co which i have used to calculate isotherms at different tenperatures. What is the criteria for selecting the appropriate Ce value for different temperatures?
@@sourodiptomodak999 Sorry. Please ignore my previous answer. Here, I have shown Ce =100 mg/L for all cases as an example. But it will differ for different temperatures and Kd = qe/Ce
Dear sir , you put Ce = 100 mg/l which is a constant value, I notice that it is Ce becomes variable and relative to the value of the adsorbance of each temperature. logically Ce to calculate qe is the same to calculate Kd correct me if I am wrong, thank you
@@rachidatayeb3460 Thanks. Please ignore my previous answers. Here, I have shown Ce =100 mg/L for all cases as an example. But it will differ for different temperatures and Kd = qe/Ce
from the equation in minutes 0.56, lnKd vs 1/T, what i did is that i fit the adsorption isotherm form experiment with Sip isotherm model, from that i got the Ks for different temperature, can i calculate delta H using lnKs vs 1/T?
@@Aminulchem i fit the data to 3 different model include Langmuir and the most fitted is Sips, hence i use the K constant from Sips model. is it ok? or do i need to use Langmuir regardless the best fitted data?
Dear sir, With utmost respect i would like to inform you that KD is dimensionless. And if we calculate KD =qe/Ce we get L g-1 as the unit. Which is incorrect. Please take a look at this paper for proper calculation of KD. doi:10.1016/j.molliq.2018.10.048
Thanks. You are right. during the making of the video, it was not considered. However, now we consider this Kc as dimensionless by multiplying 1000 e.g., Kc = qe/Ce x1000. Please see our paper: www.sciencedirect.com/science/article/pii/S0022286023019361#:~:text=Plant%2Dbased%20biochar%20can%20be,confirmed%20by%20different%20characterization%20techniques.
I use the isothemal titration calorimetry (ITC) in my experiences and tensiometry and other methods to study the adsorption phenomena. I hope you put videos about these methods .
Next video will be on the significance of various thermodynamic parameters with real example! Keep watching!
How to interpret △G°, △H°, △S° from experimental data: th-cam.com/video/LGuDshiNOmQ/w-d-xo.html
How to fit Langmuir and Freundlich isotherm model in origin: th-cam.com/video/uVlPeDYY8SA/w-d-xo.html
I use the isothemal titration calorimetry (ITC) in my experiences and tensiometry and other methods to study the adsorption phenomena. I hope you put videos about these methods .
Thank you so much for your comments. Please subscibe and keep watcing all videos. Your topics will be covered in future videos.
Thank you for making such kind of informative video.
Thank you so much for your appreciation. Please subscibe and keep watcing all videos. More interesting videos coming soon.
May I ask something Sir?
why did you decrease the coma, is it for the conversion J to kJ or what?
And how about the units of each thermodynamics parameter?
Thank You Sir.
Thank you so much for your comment. You are right. To learn more about units, please check out this article: www.researchgate.net/publication/349621377_A_promising_chitosanfluorapatite_composite_for_efficient_removal_of_lead_II_from_aqueous_solution
If you have further querry, please let me know and don't forget to subscribe this channel for new videos.
@@Aminulchem Thankyou Sir for your information.
@@henochjayasuandi727 You are welcome. Please watch all the videos & subscribe.
Thanks again for your helpful video. The only problem is how KD is being calculated. Although in some papers, KD has been calculated az qe/ce, in many more papers, KD is actually (C0-Ce)/Ce. I guess the second one must be true to have the correct units. because ln (qe/ce) has not the same unit as ∆S/R and ∆H/RT. These two terms (∆S/R and ∆H/RT) are unitless and thus the other term on the left (ln KD) must be unitless as well. It will only be unitless if KD equals (C0-Ce)/Ce. Thank you so much.
Thanks for your thoughtfull comments. Please keep watching as more videos coming soon.
yeah ofcourse, i find another equation about that (lnp*kD), p is the density of the water (g/L)
Do you have any literature that proves this[Kd = (C0-Ce)/Ce.].. please
@@ashraffaziz7393even this equation is incorrect. There is a paper that shows how authors have gotten it incorrect while calculating KD value. DOI:10.1016/j.molliq.2018.10.048
hi, i study the co2 adsorption, in your video, Kd=Qe/C, mine is Kd=Qe/P( co2 adsorption capacity/pressure), the question is, can i use the same method as yours to calculate the thermodynamic parameters?
You can use but you have to cite some recent papers to validate your findings.
Thank you Dr for this relevant video. But I want to ask you a concern: why did you choose only the experiment run at 298 K to calculate the ΔG? There is a real reason for that? Thanks again.
Thank you so much for your comment and appreciation. I have just shown how to
calculate ΔG at 298K. You can follow similar procedure to calculate ΔG value for other temperatures. Please keep watching all the videos, like and share.
similar with Mr Henock question. I was confused about the value of ΔG in reaction. If we calculated ΔG value incrementaly from Temp value (in Kelvin). Which one is the right value of ΔG? Is it possible to average all obtained value of multiplication with temp? Or are there a different equation to calculate ΔG from whole reaction? Thanks for your comment Dr Amin.
Dear sir, Kd is adsorption equilibrium constant, but qe has a unit (mg/g) and Ce (mg/l),
How it's correlate, kindly enlighten us.Thank you.
Thank you for the video. Your videos have been really helpful for my research work. Could you please share a video on how to perform a calculation of thermodynamic parameters for non linear fit?
Thanks and glad to know that. Nonlinear fitting is not possible for thermodynamic parameters because the equations we use to calculate these are in linear form. please check out other videos & don’t forget to subscribe
@@Aminulchem Thank you for responding promptly. Really appreciate it.
@@malapamei13 You are welcome. I feel happy when I can help anybody. Please keep watching as new videos coming soon.....
@@Aminulchem Sir, I need to perform a nonlinear fit for the thermodynamic study. Is there any literature or published work to which I can refer? I'm also making an effort from my end. Please help me with this. I urgently require assistance. Thank you very much!
@@malapamei13 Thanks. I have not yet done nonlinear fit of thermodynamic study. I will try to make such video in near future. Please keep watching. Please see: www.sciencedirect.com/science/article/abs/pii/S0167732220322467
How to calculate Ce??
Thank you so much for your comment. Ce can be calculated using this video: th-cam.com/video/rdj058lMyHU/w-d-xo.html If you have further problem, please let me know & don't forget to subscribe.
Why was this recommended to me I can't even read the title correctly
Thank you so much for your comment. This is probably youtube algorithm which is recommending my videos. Anyway, please watch videos & subscribe this channel.
Hi, thanks for the video, But I have a question. there are lots of points (qe and Ce) in a specified temperature. if I want to calculate Ke(=qe/Ce), which qe and Ce should I consider in a specific temperature?
Thanks. I have shown Ce =100 mg/L for all cases as an example. But it will differ for different temperatures and Kd = qe/Ce. Please watch all other videos and if you have further queries, please let me know and don't forget to subscribe to this channel.
How we calculate arrhenius factor into the thermodynamic parameters. The factor was calculated with the help of pseudo-second order rate constant by converting unit ''g mg-1 min-1'' to ''g mol-1 s-1''. How we convert? The research paper is "doi: 10.1002/chem.201903875 ''
Thanks. I will check the paper and get back to you soon. Please watch other videos of this channel.
@@Aminulchem Ok sir, waiting for your response.
@@ilmakhan6834 Could you please send me the paper title?
@@Aminulchem Preparation of an Anti-Aggregation Silica/Zinc/Graphene Oxide Nanocomposite with Enhanced Adsorption Capacity
I have a doubt Sir, for example if i have multiple Ce for different Co which i have used to calculate isotherms at different tenperatures. What is the criteria for selecting the appropriate Ce value for different temperatures?
@@Aminulchem So I can check the adsorption thermodynamics at different Co?
@@sourodiptomodak999 Sorry. Please ignore my previous answer. Here, I have shown Ce =100 mg/L for all cases as an example. But it will differ for different temperatures and Kd = qe/Ce
why music is more louder than you voice
Thanks. Sorry to hear about this. Now I don't use background music.
Dear sir, In this video , I noticed that the slope was in negative value but you consider it as positive .
Can you explain please?
Thanks. I have just shown the procedure.
Could you please explain to me why you considered the slope to be positive (1922) if the value is negative (-1922)?
Thanks. You are right. The slope is negative.
Dear sir , you put Ce = 100 mg/l which is a constant value, I notice that it is Ce becomes variable and relative to the value of the adsorbance of each temperature. logically Ce to calculate qe is the same to calculate Kd correct me if I am wrong, thank you
@@Aminulchem I am confused, so Kd= qe/C0 (initial concentration) or Kd = qe/Ce (equilibrium concentration)?
@@rachidatayeb3460 Thanks. Please ignore my previous answers. Here, I have shown Ce =100 mg/L for all cases as an example. But it will differ for different temperatures and Kd = qe/Ce
from the equation in minutes 0.56, lnKd vs 1/T, what i did is that i fit the adsorption isotherm form experiment with Sip isotherm model, from that i got the Ks for different temperature, can i calculate delta H using lnKs vs 1/T?
Thanks. Kd is generally calculated from the Langmuir model and surface complexation model.
So try to use the Langmuir model
@@Aminulchem i fit the data to 3 different model include Langmuir and the most fitted is Sips, hence i use the K constant from Sips model. is it ok? or do i need to use Langmuir regardless the best fitted data?
@@noorashikinmohamad3175 Use from Langmuir model
Thank you very much doctor
You are welcome
Dear sir,
With utmost respect i would like to inform you that KD is dimensionless. And if we calculate KD =qe/Ce we get L g-1 as the unit. Which is incorrect. Please take a look at this paper for proper calculation of KD.
doi:10.1016/j.molliq.2018.10.048
Thanks. You are right. during the making of the video, it was not considered. However, now we consider this Kc as dimensionless by multiplying 1000 e.g., Kc = qe/Ce x1000. Please see our paper: www.sciencedirect.com/science/article/pii/S0022286023019361#:~:text=Plant%2Dbased%20biochar%20can%20be,confirmed%20by%20different%20characterization%20techniques.
slope was (-1922.9) why you write it in column as 1.922 ????
Thanks. It has been converted into KJ. Please check other videos and don't forget to subscribe.
@@Aminulchem Could you please explain to me why you considered the slope to be positive (1922) if the value is negative (-1922)?
@@cezaraugusto4323 Thanks. You are right. the slope is negative.
@@cezaraugusto4323 Thanks. You are right. The slope is negative.
Here slope taken ..but actually 1992.somthing please check sir
Thanks. You are right. The slope is negative.
Thanks. You are right. The slope is negative.
@@Aminulchem thx..sir , we will remain connected
Super sir
Thanks and glad to hear that. Please watch other videos and don't forget to subscribe to this channel
Yes 👍
How to fit Jovanovic isotherm model nonlinear equation: th-cam.com/video/1w7kNbDabyg/w-d-xo.html
I use the isothemal titration calorimetry (ITC) in my experiences and tensiometry and other methods to study the adsorption phenomena. I hope you put videos about these methods .