Residual mass

A discussion forum for STANMOD users. STudio of ANalytical MODels is a software package for evaluating solute transport in porous media using analytical solutions of the convection-dispersion solute transport equation.

Post Reply
Posts: 1
Joined: Wed Jan 21, 2009 3:14 pm

Residual mass

Post by schokoigel » Wed Jan 21, 2009 3:17 pm

Dear all,
currently I am running a column experiment where I observe the concentrations eluted from an contaminated sediment. CXTFIT was used to model the concentration time series with a simple one site non equilibrium model in flux concetration mode. I also would like to know the residual mass that remains in the column after a certain time. Can I calculate the sorbed concentration at time t just by C2(t)*Kd*C0 or is there something else to consider?

Thanks for your help

Posts: 74
Joined: Fri May 21, 2004 12:50 pm
Location: Japan

Post by ntoride » Thu Jan 22, 2009 1:40 pm

Yes, as shown in Table 3.1 in the CXTFIT manual, the nondimensional nonequilibrium concentration C2 for the one-site model is equal to s/(Kd co), where s is the adsorption concentration in the kinetic site. Nobuo

Post Reply