Browsing by Author "Octavia, Silvi"

Now showing items 1-2 of 2

Comparative Free Fatty Acid (FFA) Removal in Crude Rubber Seed Oil between Methanol and Ethanol on Acid Esterification Process for Biodiesel Production

Ulfah, Maria; Mulyazmi; Octavia, Silvi; Burmawi (Universitas Muhammadiyah Surakarta, 2015-10-15)

Rubber seed Oils (RSO) with high content of FFA can be treated by acid esterfication where an alcohol reacts with RSO in the presence of acid catalyst. Methanol and ethanol are the most widely that used in biodiesel ...
Enhance Enzymatic Digestibility of Rice Straw by Ammonia Modification Process at Ambient Condition

Octavia, Silvi (Universitas Muhammadiyah Surakarta, 2015-10-15)

As a lignocellulosic biomass material, rice straw consists of cellulose, hemicelluloses, and lignin. Lignin might cover cellulose and hemicelluloses from chemical or biological treatment. Therefore, delignification process ...