Oil shale 17 Palm oil Effluents 3 Fatty acids 3 Palm oil mill effluents 3 Sustainable development 3 X ray diffraction 3 Bending strength 2 Biodiesel 2 Chemical analysis 2 Curing 2 Elaeis 2 Esters 2 Fourier transform infrared spectroscopy 2 Fruits 2 Kinetics 2 Mechanical properties 2 Oil palm empty fruit bunch (EFB) 2 Oil palm empty fruit bunches (EFB) 2 Oxygen 2 Palm Oil 2 Polymorphic forms 2 Scanning electron microscopy 2 Temperature 2 Tensile strength 2 Thermal properties 2 Thermodynamic properties 2 Thermogravimetric analysis 2 Transesterification process 2 chemistry 2