Pemanfaatan Bahan Alam Lengkuas (Alpinia Galanga) Menjadi Fotokatalis Untuk D…

ABSTRACT Water pollution caused by synthetic dye waste, particularly methylene blue, is one of the environmental issues that requires effective management. One method that can be used to address this issue is photocatalysis. This study aims to utilize galangal rhizomes (Alpinia galanga) as an environmentally friendly photocatalyst material and to analyze the effects of variations in calcin…