There 4 kinds of Direct Air Capture :
1.Adsorbent adsorbs carbon dioxide;
2.Solution absorbs carbon dioxide;
3.Electrochemistry;
4.Membrane separation.
1.Adsorbent adsorbs carbon dioxide
It has strong flexibility and mature related processes, but it is difficult to desorb,we have a new type of adsorbent: Carbon Dioxide Adsorbent DAC-1 can figure this problem.
2.2.Solution absorbs carbon dioxide
High solvent consumption
High overall energy consumption
High product purity
3.Electrochemistry
High cost, safety, and availability of renewable electricity
4.Membrane separation.
Low selectivity, low product purity, and small footprint
