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 ...