Synthesis of recycle/reuse networks based on properties considering simultaneously economic and environmental concerns
Conference Paper
Overview
Identity
View All
Overview
abstract
This paper presents a multi-objective optimization model for the recycle and reuse networks based on properties while accounting for the environmental implications of the discharged wastes using life-cycle assessment. The economic objective function considers fresh sources and treatment costs, whereas the environmental objective function is measured through the eco-indicator 99. The model considers constraints in the process sinks as well as in the environment based on stream properties such as pH, chemical oxygen demand, toxicity, density, and color, in addition to the composition of the waste streams. A global optimization procedure is developed by indirectly tackling properties through property operators and by segregating the process streams prior to treatment. One example is included, and the results show that it is possible to consider the trade-offs between both conflicting objectives using the proposed methodology.