Zea mays husk leaf and magnetic zea mays husk leaf as activated carbon used for decolourization of methylene blue dye

Nur Fathiah Mohmmad Zaki, Nursyafreena Attan

Abstract


Zea mays husk leaf (ZHL) and magnetic Zea mays husk leaf (MZHL) as activated carbons were investigated for the removal of methylene blue (MB) dye. The uses of activated carbon ZHL and MZHL are beneficial; it acts as natural adsorbent and will decrease the amount of agricultural waste. The ZHL was treated with different concentration of phosphoric acid, H3PO4 then calcined at 450  to produce activated carbons (ZHLAC45, ZHLAC55, and ZHLAC65). The magnetic activated carbons ZHL (MZHLAC45, MZHLAC55, and MZHLAC65) were prepared by further impregnating the activated carbons with iron oxide. Both ZHLAC and MZHLAC were characterized using Fourier Transform Infrared Spectroscopy (FTIR), Brunauer-Emmett-Teller (BET), Scanning Electron Microscopy (SEM) and Energy Dispersive X-Ray (EDX) analysis. ZHLAC45 exhibits higher surface area (1035.75 m2/g), while MZHLAC55 has lower surface area (555.70 m2/g) due to impregnation of iron. Nevertheless, the MZHLAC55 exhibits higher adsorption capacity with 79.35% of MB removal. 


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