Introduction.- Types and composition of wastes.- Waste management rules in India and other countries focussing on co-processing.- Resource recovery options from wastes.- Hazardous waste treatment and disposal.- Evolution of co-processing as a disposal and energy recovery method.- Co-processing technology for waste recycling.- Strategies and policy advocacy.- Facilities for co-processing of wastes.- Facilities for pre-processing of wastes.- Design features involved in equipment and facilities for pre- and co-processing.- Operational considerations in pre- and co-processing of wastes.- Co‐processing in power plant and steel plants.- Co-processing of POPs and DRE.- Mass and heat balance in co-processing.- Emission considerations involved in co-processing.- Development of co-processing technology in India and its status.- Co-processing scenario in other countries.- Business models associated with co-processing.- Sustainable supply chain for co-processing.- Co-processing and considerations on the cement quality.