Highly Crystalline Heterogeneous Catalyst Synthesis from Industrial Waste for Sustainable Biodiesel Production

Ali, Rehab Mohamed; El Katory, Marwa; Hassaan, Mohamed; Amer, Karim; El Geiheini, Adel

doi:10.21608/ejchem.2019.15471.1943

Highly Crystalline Heterogeneous Catalyst Synthesis from Industrial Waste for Sustainable Biodiesel Production

Document Type : Original Article

Authors

¹ Fabrication Technology Department, Advanced Technology and New Material Institute, City of scientific Research and Technological Applications

² City of Scientific Research and Technological Applications

³ National Institute of Oceanography and Fisheries, Marine Pollution Lab, Alexandria, Egypt.

⁴ Technology Management Department, Egypt-Japan University for science and technology, New Borg El-Arab City, Alexandria, Egypt.

⁵ Textile Engineering Department, Faculty of Engineering, Alexandria University, Alexandria 21544, Egypt.

10.21608/ejchem.2019.15471.1943

Abstract

Iron and steel factories in Egypt have been suffering from fine calcium oxide (CaO) emission which is considered as a waste and leads to many health hazards. An alternative, this waste (fine CaO) has been utilized as a low-cost, sustainable source of calcium sulfate impregnated sulfated silica (CSISS) nano-catalyst production. This hybrid catalyst has been utilized as a heterogeneous catalyst for biodiesel production from waste frying oil (WFO). In this study, the linear, quadratic and interaction effects of the main four factors that affect the biodiesel yield were investigated. An empirical model has correlated the experimental results and used to optimize and predict the biodiesel production yield. The model showed good agreement of about 93% with the experimental results and revealed that the optimum operating condition is: 50% SiO2 content, 20 min reaction time, 8:1 methanol to oil molar ratio and 3% catalyst weight at 55ºC and 300 rpm stirring speed to produce 99% biodiesel yield. The physicochemical properties of the produced biodiesel were analyzed. The combustion exhaust emissions of the produced biodiesel / petrodiesel blends have been evaluated. The techno-economic analysis elucidated that, the produced biodiesel is a strong competitor to petrodiesel with a cost of US$0.488/L.

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