CaO catalyst FAME HY zeolite acid mine drainage animal fats biodiesel biomass calcium oxide economic analysis eggshell electrolysis ethanolysis heterogeneous catalysis hydrotreated kerosene ionic liquid catalyst lipid liquefied biomass methanolysis micro- and nano-structured catalysts microalgae microalgae culture nano-catalyst photobioreactor power plant exhaust gas renewable energy seafood inorganic wastes solid base heterogeneous catalyst sustainability synthesis gas synthetic fuels