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Steric Mass Action¶

Group /input/model/unit_XXX/adsorption – ADSORPTION_MODEL = STERIC_MASS_ACTION

For information on model equations, refer to Steric Mass Action.

IS_KINETIC: Selects kinetic or quasi-stationary adsorption mode: 1 = kinetic, 0 = quasi-stationary. If a single value is given, the mode is set for all bound states. Otherwise, the adsorption mode is set for each bound state separately.

Type: int

Range: {0,1}

Length: 1/NTOTALBND

Unit: \(m_{MP}^3~m_{SP}^{-3}~s^{-1}\)

Type: double

Range: \(\ge 0\)

Length: NCOMP

Unit: \(s^{-1}\)

Type: double

Range: \(\ge 0\)

Length: NCOMP

SMA_NU: Characteristic charges of the protein; The number of sites \(\nu\) that the protein interacts with on the resin surface

Type: double

Range: \(\ge 0\)

Length: NCOMP

SMA_SIGMA: Steric factors of the protein; The number of sites \(\sigma\) on the surface that are shielded by the protein and prevented from exchange with the salt counterions in solution

Type: double

Range: \(\ge 0\)

Length: NCOMP

SMA_LAMBDA: Stationary phase capacity (monovalent salt counterions); The total number of binding sites available on the resin surface

Unit: \(mol~m_{SP}^{-3}\)

Type: double

Range: \(\ge 0\)

Length: 1

SMA_REFC0: Reference liquid phase concentration (optional, defaults to \(1.0\))

Unit: \(mol~m_{MP}^{-3}\)

Type: double

Range: \(\gt 0\)

Length: 1

SMA_REFQ: Reference solid phase concentration (optional, defaults to \(1.0\))

Unit: \(mol~m_{SP}^{-3}\)

Type: double

Range: \(\gt 0\)

Length: 1

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