A multi-objective location-routing model for dental waste considering environmental factors

Ghazale Kordi, Parsa Hasanzadeh-Moghimi, Mohammad Mahdi Paydar () and Ebrahim Asadi-Gangraj
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Ghazale Kordi: Babol Noshirvani University of Technology
Parsa Hasanzadeh-Moghimi: Babol Noshirvani University of Technology
Mohammad Mahdi Paydar: Babol Noshirvani University of Technology
Ebrahim Asadi-Gangraj: Babol Noshirvani University of Technology

Annals of Operations Research, 2023, vol. 328, issue 1, No 23, 755-792

Abstract: Abstract Nowadays, the amounts of infectious medical waste (IMW) have surged considerably so waste management has become a critical emergency in many developing countries. However, most large medical waste generation centers (MWGC) are equipped with treatment facilities, small MWGC faces the waste management problem. It reveals the significance of having a proper program for small health centers. This is an indisputable difficulty that governments bordered because it imposes great costs on societies, also the environmental problems caused by improper treatment are irreparable. To attend to all the essential aspects of the problem, this paper recommended a location-routing model with four objective functions to minimize the total costs, environmental pollution, the risk imposed on the population around disposal sites, and the total violation from the expected arrival time. Considering a multi-period problem with a maximum acceptable delay plays a key role to connect the assumptions to the real-world problem. In addition, for solving mathematical models based on case studies, the role of uncertainty is undeniable. The demand for dental waste treatment is not definite and is changed based on the different conditions thus fuzzy chance-constrained programming is proposed for this problem to tackle the uncertainty. The revised multi-choice goal programming method is considered to solve the model and a real case study for dental clinics in Babol city of Iran is investigated to illustrate the validation of the proposed model. The results indicate that the solution method can create a balance between four objective functions. Finally, sensitivity analyses are performed for some parameters to analyze the behavior of the objective functions.

Keywords: Location-routing; Dental Waste; Mathematical Model; Fuzzy chance-constrained programming; Goal programming; Environmental considerations (search for similar items in EconPapers)
Date: 2023
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DOI: 10.1007/s10479-022-04794-1

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