Silica extracted from ragihusk as heterogeneous catalyst for synthesis of biodiesel from waste cooking oil Sravanthi Veluturla*, Akansha Muniswamy Sagar, Vijay Kumar Venkatesh, Akshay Gangegowda, Afnan Shariff, 10.57647/j.ijc.2024.1403.23 XML Requires Subscription HTML Requires Subscription PDF views: 35 downloads: 352