Effect of CO_𝟐 Flow Rate on the Pinang Frond-Based Activated Carbon for Methylene Blue Removal

Figure 2

SEM images showing: (a) Pinang frond precursor, (b) PFAC₁₅₀, (c) PFAC₃₀₀, (d) PFAC₄₅₀, and (e) PFAC₆₀₀.

(a)

(b)

(c)

(d)

(e)