كنفرانس بين المللی مهندسی صنايع و سيستم ها

صفحه اصلی / دوازدهمین كنفرانس بين المللی مهندسی صنايع و سيستم ها

A Bi-Objective Optimization Model for Sustainable Closed-Loop Corn Supply Chain Design Considering Waste Valorization and Water Footprint

نویسندگان :

Amirreza Aliakbari¹ Mohammad Sheikhalishahi² Behdin Vahedi-Nouri³

1- University of Tehran 2- University of Tehran 3- University of Tehran

کلمات کلیدی :

Closed-Loop Supply Chain،Multi-Objective Optimization،Waste Valorization،Water Footprint،Circular Economy،Corn Supply Chain

چکیده :

Increasing pressure on agricultural systems to improve resource efficiency necessitates the development of sustainable supply chain structures. This study proposes a bi-objective linear programming model for a closed-loop corn supply chain integrating production, distribution, processing, and waste recovery activities. Harvested corn is allocated to canning facilities and corn oil extraction plants, while agricultural residues and processing by-products are recovered into animal feed, biofuel, and organic fertilizer. The model simultaneously maximizes total profit and minimizes water footprint using the ε-constraint method to generate Pareto-optimal solutions. Computational results show that the proposed framework effectively valorizes agricultural residues and processing by-products while producing multiple Pareto-efficient operating strategies. The Pareto frontier highlights the trade-off between profitability and water consumption, enabling decision-makers to evaluate alternative sustainable configurations. The proposed model provides a practical decision-support framework for designing environmentally and economically balanced agricultural supply chains.