| T O P I C R E V I E W |
| Vishal1987 |
Posted - 10/19/2018 : 02:05:41 AM
Origin Ver. and Service Release (Select Help-->About Origin):
Operating System:
Dear Friends,
I need to use nonlinear fit for Thomas, Yoon-Nelson and Adams-Bohart adsorption models. I tried to build these equations using fitting function builder, but I fail to do so.
Equations are
Thomas model = y=1/(1+exp((K*q*M)/F-(K*C*x)))
Yoon-Nelson model= Y=exp(K*A-K*x)
Adams-Bohart model= Y= exp(K*C*x-K*N*F)
K is the respective model constant and it varies with different flow rates and bed height,
C is the initial concentration it is 1 mg L-1
x (independent variable) which is time it varies from 0 to 180 min
I tried to edit some default functions and use but it didn't work. I'm getting an error massage saying that, Fitting failed on all datasets"
Please help me on this
VISHAA |
| 1 L A T E S T R E P L I E S (Newest First) |
| AmandaLu |
Posted - 10/19/2018 : 04:16:45 AM
Hi,
Could you please send your fitting function and data to tech@originlab.com so I can check?
Thanks,
Amanda
OriginLab Technical Service
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