CD Skripsi
Sintesis Dan Karakterisasi Adsorben Magnetik Fe3o4 Arang Aktif Biomassa Pelepah Kelapa Sawit (Elaeis Guineensis Jacq.)
SUMMARY
Very fine activated charcoal particles were a problem in separating this adsorbent from the solution after the adsorption process, especially for large sample quantities. Magnetic adsorbents were one way to overcome this. In this research, the magnetic adsorbent Fe3O4-activated charcoal was synthesized using palm fronds as a carbon source. Palm fronds are carbonized at 600⁰C for 60 minutes to produce palm fronds activated charcoal (COPF). Magnetic adsorbent (MCOPF) was obtained by co-precipitation of activated charcoal with iron salts FeCl3.6H2O and FeSO4.7H2O with NaOH as a precipitating agent. Activated charcoal (COPF) was characterized based on SNI No. 06-3730-1995 which includes yield, water content and ash content and adsorption capacity of iodine. The results of activated charcoal adsorption test (COPF) and magnetic adsorbent Fe3O4-activated charcoal (MCOPF) were 826,62 mg g-1 and 787,16 mg g-1. The results of the FTIR analysis showed an absorption band at wave number 638,44 cm-1 indicating the formation of Fe-O-C bonds in MCOPF and wave number 563.21 cm-1 in magnetite (Fe3O4) indicating the presence of Fe-O bonds. XRD analysis showed amorphous carbon peaks in COPF and magnetite (Fe3O4) peaks in MCOPF. The crystallinity of COPF and MCOPF was 15,66% and 10,01%. The results of VSM analysis or the magnetization values of MCOPF and magnetite (Fe3O4) are 7,64 emu g-1 and 39,25 emu g-1, respectively. SEM morphological analysis of the COPF and MCOPF samples had uniform and relatively small pore shapes, in accordance with the determination of pore size through ImageJ software which showed the average pore size was 5,508 μm and 2,044 μm and the surface area based on methylene blue adsorption on COPF and MCOPF was in accordance with the Langmuir isotherm model of 163,98 m2 g-1 and 181,67 m2 g-1.
Tidak tersedia versi lain