This graph very closely resembles that for microbial specific growth rate coefficient versus substrate concentration. These data often fit nicely the empirical equation proposed by Freundlich:
q = Kf Cn
where: Kf and n are coefficients
q = weight adsorbed per unit wt of adsorbent
C = concentration in fluid
Taking logs and rearranging:
log q = log Kf + n log C
The coefficients Kf and n can be estimated from slopes and by substituting
values from a line fitted to a graph of log q versus log C. With a personal
computer handy, the method of least squares can be used to get a statistical
fit, however outlying data points are not as obvious as with a graph.
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Step-by-step example of finding Freundlich coefficients.
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