Figure 5
(a) FTIR spectra of PBBC, MBBC0.75M and MBBC0.75MA. (b–d) The SEM images of PBBC, MBBC0.75M and MBBC0.75MA, respectively. (e) The XRD image of MBBC0.75M and MBBC0.75MA. Notes: PBBC—pristine banana straw biochar, MBBC0.75M —0.75 M KOH modified banana straw biochar, MBBC0.75MA—MBBC0.75M after Cd(II) adsorption.
