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Eimi14

Mexico
1 Posts
Posted - 06/21/2024 :  6:14:15 PM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
OriginPro8
Hi, I´m looking for help or advice, to adjust my photocatalytic degradation data to the first-order kinetic model equation:

Ln(qeq-q) = ln qeq-k1t

chemistry

YimingChen

1630 Posts
Posted - 06/24/2024 :  10:23:32 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
You could convert the equation to the form 
q = qeq*(1 - exp(-k1*t))
, where q is the dependent variable, t is the independent variable, and qeq and k1 are fitting parameters.

Then you may perform nonlinear curve fitting on your dataset. Please refer to the tutorial page below:
https://www.originlab.com/doc/en/Tutorials/UserDef-FitFunc

James
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