Immobilization of Heavy Metals Present in Biomedical Waste Ash by Using Sulphur Based Geopolymer Concrete – A Review. - Suresh Kumar, A.; Vijay Sankar, K.; Pream Kumar, S.; Rithika Sivasankari, M.; Muthuselvan, M.; Lokesh, S. (E3S Web of Conferences, 2025)