Performance of Sweet Potato’s Leaf-Derived Activated Carbon for Hydrogen Sulphide Removal from Biogas

Figure 4

SEM images of the SpLAC sample at low magnification (25.00 KX) and high magnification (50.00 KX). (a, c) Fresh AC and (b, d) spent AC samples.

(a)

(b)

(c)

(d)