GREEN SYNTHESIS OF Fe-Ni/TiO2 NANOCATALYST FROM MANGOSTEEN PEEL EXTRACT FOR HIGH QUALITY PYROLYSIS OIL PRODUCTION FROM WASTE LUBRICATING OIL
Riny Yolandha Parapat, Aji Tri Laksono, Rizki Imam Fauzi, Jono Suhartono, Mila Dirgawati, Michael Schwarze, Reinhard Schomäcker
This study explores the green synthesis of Fe-Ni/TiO2 nanocatalyst using mangosteen peel extract for the pyrolysis of waste lubricating oil to produce high cetane pyrolysis oil. The synthesis was simulated using a factorial design with four factors: A (amount of metal in the precursor), B (amount of reducing agent), C (amount of support), and D (duration of nanoparticle synthesis). The responses evaluated were oil yield, calorific value, density, and catalyst yield. The results indicated that the most significant factors influencing oil yield, calorific value, density, and catalyst yield were the amount of reducing agent, synthesis duration, amounts of metal and support, and amount of reducing agent, respectively. Significant interactions between factors were observed: A and B, A and D, and C and D for oil yield; A and C, and B and D for density; and A and C, B and C, and A and D for catalyst yield. The simulation results of the optimization of oil yield, calorific value, density, and catalyst yield showed an increase in the quality and quantity of pyrolysis oil where the optimum oil yield produced was 47.29% and the catalyst yield was 74.88%. These findings demonstrate the effectiveness of the Fe- Ni/TiO2 nanocatalyst synthesized through green methods, emphasizing its potential for sustainable production of high-quality pyrolysis oil from waste lubricating oil.