PENGGESERAN REAKSI KESETIMBANGAN HIDROLISIS MINYAK DENGAN PENGAMBILAN GLISEROL UNTUK MEMPEROLEH ASAM LEMAK JENUH DARI MINYAK BIJI KARET
<p>Abstract: Indonesia is one of the largest rubber producers in the world. Rubber seed is obtained<br />as agricultural waste. This is a potential feedstock for biodiesel because of its high proportion of<br />oil. The oil is hydrolyzed to produce saturated and unsaturated fatty acids. Unsaturated fatty acids<br />such as oleic, linoleic and linolenic acids are good for health. Besides, saturated fatty acids are<br />suitable for high-quality biodiesel by esterification. Batch process of rubber seed hydrolysis was<br />conducted on this research to produce fatty acids and glycerine. In case of its reversible reaction,<br />continuously separation of product or increasing reactant-concentration was needed to achieve<br />equilibrium conversion. In this batch process, continuously separation of glycerine was done by<br />settling it stage by stage (multi stages). The objection of this research was to find optimum<br />condition on multi stages hydrolysis to produce fatty acids. It was processed on hydrochloric-acid<br />catalyzed, fifty-fifty ratio of oil and water, and reacted in 70<br />C. In each stage of hydrolysis,<br />glycerine and water was separated from reaction mixture by settling on 24 hours. The fatty acids<br />were re-hydrolyzed with fresh water like the stage before. The process was stopped while it<br />reached maximum conversion (almost completely). Based on this research, we concluded that<br />for the shorter time of each stage on hydrolysis-process gives higher conversion of oil to fatty<br />acids.<br />o<br />Keywords: fatty acids, multi stages hydrolysis, Rubber Seed Oil, reaction equilibrium.</p>