Abstract
Research on the use of the oil palm empty fruit bunch (OPEFB) as an adsorbent for free fatty acid (FFA) adsorption on Crude Palm Oil (CPO) has been done. CPO is the main raw material in the manufacture of food products. The results of OPEFB adsorbent characteristics showed the amount of water content and ash content of 0,067% and 0,175%, XRF analysis obtained the greatest content of OPEFB in the form potassium metal as much as 44,24%, FTIR analysis identified that there were CO3 compounds in wave number 1648 cm-1 and SEM analysis indicates there are no pores in OPEFB. The result showed that the number of OPEFB with the best adsorption was 0,1 gram with 60 minute optimum contact time. The CPO adsorption process with OPEFB shows the Langmuir model with a correlation value (R2) of 0,8845 and the adsorptions kinetics follows the pseudo order 2 adsorption kinetics model with a correlation value (R2) of 0,9857. The results of this study showed the characteristics of CPO before and after adsorbed using 0,1 g of adsorbent OPEFB showed the amount of FFA level of 7,321% to 6,297%, water content of 0,0025% to 0,00119% and impurities content of 0,8847% to 0,8408%.
Highlights
Kelapa sawit merupakan bahan baku utama minyak goreng
The results of this study showed the characteristics of Crude Palm Oil (CPO) before and after adsorbed using 0,1 g of adsorbent oil palm empty fruit bunch (OPEFB) showed the amount of free fatty acid (FFA) level of 7,321% to 6,297%, water content of 0,0025% to 0,00119% and impurities content of 0,8847% to 0,8408%
Pembuatan dan Karakterisasi Karbon Aktif dari Biji Kelor (Moringa oleifera L) dengan NaCL sebagai Bahan Pengaktif, Fakultas Matematika dan Ilmu Pengetahuan Alam, UIN Maulana Malik Ibrahim, Malang
Summary
CPO sebelum dan sesudah diadsorpsi tidak berubah secara signifikan terhadap kadar air dan kadar kotoran. Hasil pada Tabel 2 menunjukkan bahwa kadar air tidak lebih dari 0,5% dan kadar kotoran lebih dari 0,5% tetapi efektifitas adsorben ATKS berkerja dengan baik karena dapat menurunkan kadar air dan kadar kotoran walaupun selisihnya tidak jauh. Parameter uji selanjutnya dalam analisis sampel CPO yaitu kandungan ALB. Prosedur ini diawali setelah memperoleh massa optimum dan waktu kontak optimum untuk mengadsorpsi ALB pada CPO. Kadar ALB tersebut masih tergolong tinggi dari standar SNI karena CPO yang digunakan pada penelitian ini memiliki kadar ALB yang tinggi dikarenakan lama nya waktu penyimpanan sehingga secara langsung terjadi proses hidrolisis dan oksidasi yang dipercepat juga dengan adanya kandungan air dalam CPO. Efektivitas adsorben ATKS berkerja dengan baik karena dapat menurunkan kadar ALB yang tinggi dengan persen adsorpsinya sebesar 6,46%. Berikut reaksi antara ALB dan K2CO3 yang terdapat pada adsorben ATKS:
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