Biodiesel production from date seed oil using hydroxyapatite-derived catalyst from waste camel bone

Area of Science:

• Green Chemistry and Sustainable Energy Production
• Catalysis and Materials Science

Background:

• Petroleum-based fuels pose environmental concerns, driving the need for sustainable alternatives.
• Biodiesel offers a greener energy source, contributing to bio-economy growth.
• Non-edible feedstocks are crucial for sustainable biodiesel production, avoiding competition with food resources.

Purpose of the Study:

• To synthesize eco-friendly biodiesel from non-edible date seed oil.
• To develop and utilize novel hydroxyapatite heterogeneous catalysts derived from waste camel bones.
• To optimize the transesterification process for maximum biodiesel yield.

Main Methods:

• Characterization of hydroxyapatite catalysts using X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), and transmission electron microscopy (TEM).
• Transesterification of date seed oil with ethanol using hydroxyapatite catalysts.
• Optimization of reaction conditions including catalyst concentration, oil-to-ethanol ratio, temperature, and time.
• Analysis of fatty acid ethyl ester (FAME) production using gas chromatography-mass spectroscopy (GC-MS).

Main Results:

• Hydroxyapatite catalyst pore size decreased with increasing calcination temperature.
• Optimized biodiesel yield of 89 wt% was achieved under specific reaction conditions (4 wt% catalyst, 1:7 oil to ethanol ratio, 75°C for 3 hours).
• Produced fatty acid ethyl ester fuel properties complied with ASTM D 6751 standards.

Conclusions:

• Biodiesel derived from date seed oil using waste-derived hydroxyapatite catalysts is a viable and sustainable alternative fuel.
• The developed catalytic process offers a promising route for environmentally friendly energy production.
• Utilizing waste resources for biodiesel synthesis supports a circular economy and promotes societal and economic growth in the biodiesel industry.