Figure 9.

SEM micrographs of CEL/CS aerogels prepared at 1 wt.% (A) and 2 wt.% (B) CS solution. (C) Optical image of CEL/CS aerogel prepared at 1 wt.% CS solution featuring its ultralightweight property. (D) Reusability performance and optical images after pollutants sorption and desorption of CEL/CS aerogel (abbreviated with CE/CSA-1 and CE/CSA-2, the number identifying the concentration of CS solution), as well as of control CEL (CEA) and CS (CSA) aerogels. The breakthrough curves of CR sorption in column experiments by the CEL/CS aerogel prepared at 1 wt.% CS solution as a function of (E) flow rate, (F) sorbent mass and (G) pollutant concentration. (Reprinted with permission from Ref. [109]. Copyright 2023 Elsevier.)