Valorisation of Pine Cone as an Efficient Biosorbent for the Removal of Pb(II), Cd(II), Cu(II), and Cr(VI)

Figure 1

(a) FTIR spectra of pine cone (PC) and pine cone after metal adsorption (PC-M), (b) SEM micrograph and EDX spectra of pine cone, and (c) SEM micrograph and EDX spectra of pine cone after adsorbing Cu(II), Cd(II), and Pb(II).

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(b)

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