Figure 1.

(A) Overall process for the absorption and desorption of VOCs using SHS as the absorbent; (B) details of the switchable desorption and regeneration steps in the process. VOC-containing gas is fed into the absorber (1) where the VOCs are absorbed by the SHS. The liquid from the absorber (1) is then sent into the desorber (2) and mixed with recovered water from tank (5). CO₂ from vessel (7) is sparged into the liquid mixture in the desorber (2) to achieve the separation of VOCs from the SHSs; then the aqueous phase solution containing SHSs and water is transported into separator (4) and is bubbled with N₂ to separate the SHS from the water. The red circle in Figure 1A is the process of desorption, the details of which are shown in Figure 1B.