Branholt / Columns

Saturated

A bed left at equilibrium with outdoor air and never regenerated. It is full before the fan starts, so it takes nothing and gives nothing back.

control · in service 2026-02 · 96 cycles · measured heel 1.250 mmol/g
ten stations, weight 900.0 to 900.0, spread 0.0
0.00 kg CO2 recovered a cycle. This column is a control and is never counted toward a removal.

Fresh bed

t 0 min
q 1.250 mmol/g
weight 900.0
air off

This bed came into the run full. It has been held at equilibrium with outdoor air since February and never regenerated.

The BR-4 pore field with 100.0 per cent of its drawn pore area inked, which is a loading of 1.250 mmol of CO2 per gram.
100.0% of pore area inked, at 640 weight units to the mmol/g

Air on

t 10 min
q 1.250 mmol/g
weight 900.0
adsorption

The fan is running against a bed with nowhere left to put anything.

The BR-4 pore field with 100.0 per cent of its drawn pore area inked, which is a loading of 1.250 mmol of CO2 per gram.
100.0% of pore area inked, at 640 weight units to the mmol/g

Adsorbing

t 25 min
q 1.250 mmol/g
weight 900.0
adsorption

A full bed and moving air is not capture. It is a fan.

The BR-4 pore field with 100.0 per cent of its drawn pore area inked, which is a loading of 1.250 mmol of CO2 per gram.
100.0% of pore area inked, at 640 weight units to the mmol/g

Filling

t 45 min
q 1.250 mmol/g
weight 900.0
adsorption

The loading has not moved because it cannot. Every site on the amine is already taken.

The BR-4 pore field with 100.0 per cent of its drawn pore area inked, which is a loading of 1.250 mmol of CO2 per gram.
100.0% of pore area inked, at 640 weight units to the mmol/g

Slowing

t 75 min
q 1.250 mmol/g
weight 900.0
adsorption

This is the column that answers the question of whether the reading is really the air.

The BR-4 pore field with 100.0 per cent of its drawn pore area inked, which is a loading of 1.250 mmol of CO2 per gram.
100.0% of pore area inked, at 640 weight units to the mmol/g

Breakthrough

t 120 min
q 1.250 mmol/g
weight 900.0
air off

Breakthrough at minute zero, and at every minute since.

The BR-4 pore field with 100.0 per cent of its drawn pore area inked, which is a loading of 1.250 mmol of CO2 per gram.
100.0% of pore area inked, at 640 weight units to the mmol/g

Heat on

t 132 min
q 1.250 mmol/g
weight 900.0
desorption

The heater is isolated on this column. It is held full on purpose, so it stays full.

The BR-4 pore field with 100.0 per cent of its drawn pore area inked, which is a loading of 1.250 mmol of CO2 per gram.
100.0% of pore area inked, at 640 weight units to the mmol/g

Releasing

t 150 min
q 1.250 mmol/g
weight 900.0
desorption

Nothing is released, so nothing is metered, so no tonne exists.

The BR-4 pore field with 100.0 per cent of its drawn pore area inked, which is a loading of 1.250 mmol of CO2 per gram.
100.0% of pore area inked, at 640 weight units to the mmol/g

Nearly empty

t 165 min
q 1.250 mmol/g
weight 900.0
desorption

A bed at equilibrium is a bed doing nothing at full cost.

The BR-4 pore field with 100.0 per cent of its drawn pore area inked, which is a loading of 1.250 mmol of CO2 per gram.
100.0% of pore area inked, at 640 weight units to the mmol/g

The heel

t 195 min
q 1.250 mmol/g
weight 900.0
vacuum closed

Still full. Regeneration is not a detail of this process, it is the process.

The BR-4 pore field with 100.0 per cent of its drawn pore area inked, which is a loading of 1.250 mmol of CO2 per gram.
100.0% of pore area inked, at 640 weight units to the mmol/g

Read it against the others

Reserve a tonne