In recent years, the importance of Life Cycle Assessment (LCA) as an environmental decision-making tool has skyrocketed. The study of chemical engineering's environmental effects has grown in popularity, but it still needs a lot of refinement and growth before it can be used to evaluate industrial processes. The Lifecycle Emissions Model (LEM) estimates energy consumption, criterion air-pollutant emissions, and CO2-equivalent greenhouse-gas emissions from a variety of energy and material lifecycles using lifecycle analysis (LCA). A important method for evaluating the environmental implications of developing technology is life cycle assessment (LCA).