CD Skripsi
Sintesis Dan Karakterisasi Karbon Aktif Dari Limbah Pelepah Kelapa Sawit (Elaeisguineensisjacq.) Menggunakan pengaktifkalium Hidroksida
The utilized of oil palm plantation waste in the form of fronds, Oil Palm Fronds (OPF) needs to be increased in economic value so that it will reduce OPF waste in Riau Province, by converted it to Activated Charcoal of Oil Palm Fronds (ACOPF). OPF has the potential as a basic material in the manufacture of ACOPF because it contains high levels of cellulose and hemicellulose. This study aims to increase the economic value of OPF, produced ACOPF with potassium hydroxide (KOH) activator and to determine the effect of variations in carbonization temperature on the characteristics of the carbon produced. Charcoal of Oil Palm Fronds (COPF) is made through a carbonization process with temperature variations of 400, 500 and 600 oC for 60 minutes. Then, process COPF to ACOPF was converted with KOH activator at weight ratio (1:3), temperature 100 oC for 6 hours with stirring speed 300 rpm and physical activation at temperature 800 for 30 minutes. Several parameters of OPF, COPF, ACOPF were characterized by gravimetric determination of yield, content (water, ash, volatile matter), surface acidity used the pyridine adsorption method, functional groups used the FTIR instrument and the degree of crystallinity used XRD. The results obtained from OPF, COPF and ACOPF 400, 500, 600 characterization were the yield, moisture content and volatile substance content decreased with increasing carbonization temperature and activation process, otherwise the ash content increased. Water content and ash content data meet the quality requirements of technical activated carbon according to SNI 06-3730-1995. The total acidity value obtained in the sample shows an increase with increasing carbonization temperature and with the presence of activation. Qualitative determination of pyridine adsorption through IR spectra, detected Bronsted acid sites at wave number 1600 cm-1 and Lewis acid sites at wave number 1400 cm-1. The functional groups present in the sample are vibrations of C-O (carboxylate), O-H (free hydroxy), O-H (alcohol), C=O (carbonyl), C=C (aromatic) and C-H. The XRD diffraction pattern shows the Lw decreasing value, the value LH increasing and the increasing ratio of LH/Lw. Also, the degree of crystallinity obtained is higher with increasing carbonization temperature.
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