Figure 4

FTIR spectra of (a) RPAL and the adsorbents (b) SiMg-31-12, (c) SiMg-21-12, (c) SiMg-11-12, (d) SiMg-12-12, and (e) SiMg-13-12.
FTIR spectra of (a) RPAL and the adsorbents (b) SiMg-31-12, (c) SiMg-21-12, (c) SiMg-11-12, (d) SiMg-12-12, and (e) SiMg-13-12.