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 Non-linear curve fitting for Langmuir isotherm		  New Topic  Reply to Topic
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SHILPI DAS

India
1 Posts
Posted - 12/19/2018 :  12:05:31 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Origin Ver. and Service Release (Select Help-->About Origin):
Operating System:

I am doing work on adsorption. Can you please tell me how to do non-linear regression analysis in Langmuir isotherm in Origin? How can I determine the initial values for the parameters i.e lower bound?
The equation is qe=qmKCe/(1+KCe). The parameters are qm, K.
Kindly provide me the steps. I have tried but cannot. Kindly reply Sir

With best regards


S.Das

lkb0221

China
497 Posts
Posted - 12/19/2018 :  11:31:14 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi,

You can convert it to a linear scale first, see this tutorial:
https://www.originlab.com/doc/Tutorials/Linear-Fit-For-Kinetic-Models

SZ
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