INX Column Loading: Oper. Conds Tab

Variable Definitions, Ranges and Default Values

The following table shows a brief description of the variables appearing in this tab. The table also displays their default values and their generally acceptable range. Note that due to how the variables are used in the modeling equations, the range of acceptable values may be further reduced; for more details, see INX Column Loading: Modeling Assumptions & Constraints.

Variable	Default Value	Range

◙ Breakthrough Time (h) The actual duration of the loading operation (per cycle).	200.0	Positive
◙ Resin Binding Capacity based on CaCO3 (g/L) The maximum ion mass that can bind to the resin volume expressed as equivalent CaCO₃ hardness.	50.0	Positive
◙ Resin Binding Capacity based on Ion Mass (g/L) The maximum ion mass that can bind to the resin volume.	20.0	Positive
◙ Service Volume The volume of material that can be fed to the column until breakthrough is reached, expressed as number of bed volumes.	400.0	Positive
◙ Empty Bed Contact Time (min) The amount of time it takes for a feed volume of material to flow through an empty bed.	3.0	Positive
● Cycles Per Week The number of procedure cycles per week.	0.0	Positive
○ Binding % The amount of ion mass that binds to the resin for each component, expressed as percentage of the component’s mass in the feed stream.	0.0	0-100
○ Ignore In Sizing ? Check the box next to a component to ignore the binding percentage of that component in equipment sizing calculations.	No	Yes/No

Symbol Key: ○ User-specified value (always input); ● Calculated value (always output); ◙ Sometimes input, sometimes output

Specification Choices / Comments

The following list describes the available specification choices in this tab; for more details on how these are implemented, see Discrete Pass-Through (in a GBX): Modeling Calculations.

•Breakthrough Time...

The Breakthrough Time can be either set or calculated based on the resin binding capacity or the service volume. The Empty Bed Contact Time must also be specified unless the breakthrough time and the equipment size are set. In that case, the empty bed contact time is calculated by the model.

•Resin Binding Capacity...

The resin binding capacity refers to all components that bind to the resin and are not ‘Ignored in Sizing’.