Fig. 2
From: Valorization of marble sludge waste in biodiesel production using a central composite design
XRD analysis: a marble sludge waste, b calcinated marble sludge waste.
Fig. 2 | Scientific Reports
From: Valorization of marble sludge waste in biodiesel production using a central composite design
XRD analysis: a marble sludge waste, b calcinated marble sludge waste.
