Transport models for desorption from natural soils packed in flushed columns

Biospecific desorption from mixed-function columns.

enzymes. Necessary requirements include: (i) the enzyme must contain more than one ligand binding site; (ii) the bis-ligand should have strong affinity for the enzyme; (iii) the spacer connecting the two ligand entities should have sufficient length to cover the distance between two ligand binding sites situated on different molecules. AfRnity precipitation has been applied to several dehydroge...

simulation of packed columns for multicomponent adsorption

the dynamics of multicomponent adsorption in a fixed bed adsorber is examined numerically. the dynamic model of adsorption in the packed column included axial dispersion and variable space velocity along the bed for the multicomponent adsorption adsorption the pore fluid and the solid phase are in equilibrium with a nonlinear isotherm. the numerical solution is based upon the modified lax-wendr...

Prediction of Mean Drop Size in Pulsed Packed Extraction Columns

a study on thermodynamic models for simulation of 1,3 butadiene purification columns

attempts have been made to study the thermodynamic behavior of 1,3 butadiene purification columns with the aim of retrofitting those columns to more energy efficient separation schemes. 1,3 butadiene is purified in two columns in series through being separated from methyl acetylene and 1,2 butadiene in the first and second column respectively. comparisons have been made among different therm...

Packed versus capillary columns in gaschromatography.

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