Synthesis and Physicochemical Characterization of Anion Exchanger Based on Green Modified Bottle Gourd Shell

Figure 8

SEM micrographs of LVS biomass (a, b), MLV precursor (c), and CALV biosorbent before (d) and after phosphate (e) and nitrate (f) biosorption.

(a)

(b)

(c)

(d)

(e)

(f)