Open Problems in Green Supply Chain Modeling and Optimization with Carbon Emission Targets

Research on pollutant emissions management is developing into a very essential part of the green supply chain landscape as more industries try to make it part of their strategy among pressure from customers, competitors, and regulatory agencies. This has resulted in an increased tendency to not only focus on financial costs in the production process but also on its impact on society. This public impact comprises, for instance, environmental implications, such as the emission of pollutants during production. The carbon tax and emissions trading mechanisms are the most effective market-based choices used to lower carbon emissions. These mechanisms are incorporated into the development of inventory lot sizing models, the results of which could improve the effectiveness of carbon management in the supply chain. The paper presents some open problems associated with the lot sizing problem under emissions constraints.