Preparation, Characterization, and Cationic Functionalization of Cellulose-Based Aerogels for Wastewater Clarification

Figure 11

Comparison of the removal efficiency of reactive dye (CI RB19) from the water for aerocellulose and cationized aerocellulose prepared from 5% cellulose concentration: (a) aerocellulose and (c) cationized aerocellulose before dye absorption; (b) aerocellulose and (d) cationic aerocellulose after dye absorption; (e) photographs of the dye fixation over time for cationized aerocellulose.