Biomass-derived activated carbon as a green heterogeneous catalyst for conversion of glycerol, biodiesel byproduct, to solketal: Process optimization, kinetics, and cost analysis - Shikhasmita Das; Kedar Kashinath Thote; Gopinath Halder; Gurunathan Baskar; Ruma Rano; Samuel Lalthazuala Rokhum (Biomass and Bioenergy, 2026)

Microwave-enhanced conversion of waste cooking oil to biodiesel using flyash-supported Carica papaya leaf as a heterogeneous base catalyst - Prasad Pujari; Shikhasmita Das; Ramón Piloto-Rodríguez; Sanjay Basumatary; Prakash Bhuyan; Lakhinath Saikia; Gopinath Halder; Samuel Lalthazuala Rokhum; Ruma Rano (Bioresource Technology Reports, 2026)