Scale Deposits from Drinking-Water Pipelines as a Sustainable Heterogeneous Catalyst for Biodiesel Production
Biodiesel has attracted considerable attention as a promising renewable fuel because it burns cleaner than conventional diesel and produces lower pollutant emissions. In this work, a CaO-based heterogeneous catalyst was prepared by calcining drinking water pipeline scale deposits at 900 °C for 2 h. X-ray diffraction (X...