4.7 Article

Multi-objective optimization modelling of sustainable green supply chain in inventory and production management

Journal

ALEXANDRIA ENGINEERING JOURNAL
Volume 60, Issue 6, Pages 5129-5146

Publisher

ELSEVIER
DOI: 10.1016/j.aej.2021.03.075

Keywords

Multi-objective fractional programming; Fuzzy goal programming; Sustainable green supply chain; Inventory and production management

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In this study, a multi-objective inventory model with green investment is proposed to address the increasing pressure to conserve the environment from global warming. The model is formulated as a multi-objective fractional programming problem with various objectives and constraints, aiming to provide useful suggestions to decision-makers in the manufacturing sectors.
The ever increasing pressure to conserve the environment from global warming cannot be overemphasized. Emission from the inventory and production process contributes immensely to global warming and hence, the need to device a sustainable green inventory by the operational managers. In this paper, a multi-item multi-objective inventory model with back-ordered quantity incorporating green investment in order to save the environment is proposed. The model is formu-lated as a multi-objective fractional programming problem with four objectives: maximizing profit ratio to total back-ordered quantity, minimizing the holding cost in the system, minimizing total waste produced by the inventory system per cycle and minimizing the total penalty cost due to green investment. The constraints are included with budget limitation, space restrictions, a constraint on cost of ordering each item, environmental waste disposal restriction, cost of pollution control, elec-tricity consumption cost during production and cost of greenhouse gas emission in the production process. The model effectiveness is illustrated numerically, and the solution obtained to give a useful suggestion to the decision-markers in the manufacturing sectors. (C) 2021 THE AUTHORS. Published by Elsevier BV on behalf of Faculty of Engineering, Alexandria University.

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