Decision making under uncertainty using PEES–fuzzy AHP–fuzzy TOPSIS methodology for landﬁll location selection Mohamed Hanine 1 • Omar Boutkhoum 1 • Abderraﬁe El Maknissi 2 • Abdessadek Tikniouine 1 • Tarik Agouti 3 Ó Springer Science+Business Media New York 2016 Abstract The location selection for landﬁll municipal solid waste is an important issue in waste management. Selection of the optimal location requires consideration of multiple alternative solutions and evaluation factors because of system complexity. Further, ranking of the alternative locations and selection of the most optimal and efﬁcient locations for landﬁll waste are an important multi- criteria decision-making problem. In this study, the can- didate locations for landﬁll are determined based on Political, Economical, Environmental and Social factors are assessed through decision-makers’ opinion and by the methodology that incorporates fuzzy analytic hierarchy process (fuzzy AHP) and fuzzy technique for order pref- erence by similarity to ideal solution (fuzzy TOPSIS). Speciﬁcally, the fuzzy AHP technique is applied to determine the weights of selected criteria impacting the location selection process, and the fuzzy AHP is adapted to model the linguistic vagueness and ambiguity, which can also be expressed as triangular fuzzy numbers. Further- more, fuzzy TOPSIS technique is employed to rank the alternative locations. The applicability of this methodology is demonstrated by a case study of landﬁll waste location selection in the region of Casablanca, Morocco, and the results are compared with other techniques. Finally, to complete the treatment, a sensitivity analysis is performed to examine the impact of the preferences given by decision- makers to choose the best location. Keywords Fuzzy logic  Fuzzy AHP  Fuzzy TOPSIS  Landﬁll location selection  Casablanca region 1 Introduction The management of municipal solid waste increasingly becomes a challenging task faced by governmental authorities for each region due to many various reasons such as increasing in waste quantities, human population, environmental and public health risk factors, and decreas- ing in land availability for waste disposal locations (Sri- vastava and Nema 2012). Therefore, the management of the municipal solid waste system can be thought to be a cycle with many related phases from waste generation to ultimate disposal of waste (Ojedabenitez and Beraudlozano 2003). The present work focuses on the ﬁnal phase of the life cycle of management waste, i.e., waste disposal (Liu et al. 2014a, b). Selection of the optimal landﬁll municipal solid waste location is a complex problem and requires an extensive evaluation process that considers the requirements of & Mohamed Hanine m.hanine@uca.ma Omar Boutkhoum o.boutkhoum@uca.ma Abderraﬁe El Maknissi elmaknissi@gmail.com Abdessadek Tikniouine tikniouine@uca.ma Tarik Agouti t.agouti@uca.ma 1 Laboratory of Engineering and Information Systems, Department of Computer Science, Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakesh, Morocco 2 Department of Geography, Polydisciplinary Faculty, Saﬁ, Morocco 3 Team of Telecommunications and Computer Networks, Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakesh, Morocco 123 Environ Syst Decis DOI 10.1007/s10669-016-9609-2