Pengaruh Konsentrasi Asam Terhadap Aktivasi Lempung Palas Dan Aplikasinya Sebagai Katalis Pada Pembuatan Biodiesel Dari Minyak Nyamplung Dengan Variasi Kecepatan Pengadukan

Renia Navivin, Syaiful Bahri, Wisrayetti Wisrayetti

Abstract


This study aims to produce biodiesel from calophyllum oil using acid-activated heterogene clay catalyst, determining catalyst and biodiesel characteristics and determining the selectivity of clay catalyst. The clay catalyst is prepared by grinding clay soil that has been dried to a size of -100 + 200 mesh, then clay is activated using H2SO4 0.5 N, 1 N and 2N solution. Then filtered using a vacuum pump. The solids are then calcined at 300ºC. The process of making biodiesel is carried out through two stages: esterification and transesterification, in transesterification process of stirring speed variation of 200 rpm, 300 rpm, 400 rpm, with catalyst weight of 3% by weight of oil, calophyllum oil sample weight 80 grams and methanol with ratio of oil to methanol 1: 12 is introduced into the transesterification reactor, the reaction lasting for 120 minutes at 60 ° C. This study yielded the largest biodiesel yield on 2 N activated acid catalyst with 400 rpm mixing speed velocity of 78.4%. Characteristics of the catalyst that has a surface area and ratio of Si / Al is large enough.
Keywords: biodiesel, calophyllum, clay, transesterification.

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