Proses Delignifikasi Tandan Kosong Kelapa Sawit Menggunakan NaOH dalam Sistem Cairan Ionik Choline Chloride

Abstract

Palm Empty Fruit Bunches (TKKS) is a waste which has a fairly high content of lignocelluloses. Meanwhile, TKKS has not been utilized optimally. With a cellulose content of 45%-50%, TKKS then potentially be used as raw material for bioethanol. In the process of bioethanol production from TKKS, delignification of lignocellulose the first stage to dissolving ligament between cellulose, hemicellulose and lignin. In this research, delignification process was carried out using NaOH in the ionic liquid system and without ionic liquids. The purpose of this research was to find out the highest content of cellulose which contained in the TKKS. Delignification process were performed using ionic liquids choline chloride (ChCl) in variety of heating time with amount of different ChCl. This research used TKKS powder heated at a temperature 130 °C with a variety of heating time 30, 60, and 90 minutes and the variation addition of ChCl at10%, 15% and 20% weight of TKKS. Delignification research results used ChCl obtained highest content of cellulose is 40,33%, containing hemicellulose 20,28%, and lignin 3,62% in heating treatment 90 minutes and the addition of 15% ChCl. While delignification without ChCl obtained highest content of cellulose is 24,98%, containing hemicellulose 8,25%, and lignin 18,99% in heating treatment 90 minutes. Delignification process using ionic liquids ChCl can improve the degree of delignification is 61,45%.