Synthesis, Characterization, and Application of Co-Al-Zn Layered Double Hydroxide/Hydrochar Composite for Simultaneous Removal of Cationic and Anionic Dyes

Figure 9

3D response surface plots for MB (a and b), MO (c and d), and RY-2 (e–h).

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)