An investigation on PROMETHEE and ELECTRE outranking methods in environmental decision-making of oil and petrochemical industries

Nowadays one of the most important global issues is environmental problems that can cause harm to human and other organisms. This problem is caused due to various factors like pollutants and other environmental disturbances. Because of these factors we need to find strategies for solving such problems. One of the most important problems in the world is the pollution produced by different industries like oil industry that has a significant role in the nations economic and progress. There are many solutions and methods for surveying and mitigating the industries effects. Multiple Criteria Decision-Making (MCDM) is one of these methods that order alternatives based on their importance. Ranking problems consist in rank ordering of all alternatives from the worst to the best، looking at their evaluations on the considered criteria. In present study two more important outranking methods (PROMETHEE and ELECTRE) were assessed and their advantages and disadvantages were surveyed. Also a study was done in Arak petrochemical industry by PROMETHEE method as an case study and construction phase alternatives were ranked by mentioned method. Case study investigation and review on other studies showed that the PROMEHTEE method because of some features like being easy to use، understandable، Ability to cope with uncertainty، importance the decision makers، ability of visual representation، validity and flexibility is more applicable than ELECTRE. So the suggested method can be applied for making environmental decisions and also oil and petrochemical industries that simultaneously deal with qualitative and quantitative data and uncertainty. The researchers hope that it would have desirable results