Sintesis Biodiesel dari Minyak Jelantah dengan Katalis NaOH dengan Variasi Waktu Reaksi Transesterifikasi dan Uji Performanya dengan Mesin Diesel

sakinah himav rezeika, Ita Ulfin, Yatim Laillun Ni'mah

Abstract


Biodiesel telah berhasil disintesis dari minyak jelantah hasil penggorengan dari ayam goreng. Sintesis biodiesel dilakukan dengan katalis NaOH menggunakan metode reflux pada suhu 65 °C, perbandingan mol asam oleat : metanol 1:2, massa katalis 0,5% terhadap massa minyak jelantah. Variasi yang digunakan yaitu variasi waktu reaksi 30, 60 dan 90 menit. Densitas, viskositas, titik nyala, bilangan asam biodiesel hasil penelitian telah sesuai dengan SNI 04-7128-2015. Hasil GC-MS biodiesel menunjukan kandungan metil ester sebesar 99,5% dengan kelimpahan paling besar adalah metil oleat sebesar 56,808%. Nilai kalor pembakaran dari solar dex, biodiesel 100%, dan biodiesel 10%  secara berturut-turut yaitu 10.710,89 , 9.494, dan 10.822 kal/g. Untuk uji performa pada mesin diesel, nilai Brake Horse Power (BHP) dari bahan bakar solar dex, biodiesel 100%, dan biodiesel 10% pada putaran 2000 rpm dan beban generator 1000 watt secara berturut-turut yaitu 1263,068, 1257,10, dan 1260, 37 watt ; nilai efisiensi thermis dari bahan bakar solar dex, biodiesel 100%, dan biodiesel 10% pada putaran 2000 rpm dan beban generator 1000 watt secara berturut-turut yaitu 17,95%, 18,94%, dan 18,14%

Keywords


Biodiesel, minyak jelantah; katalis basa; transesterifikasi; BHP; efisiensi

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DOI: http://dx.doi.org/10.12962/j25493736.v3i2.3098

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