A deterministic approach in waste management: delineation of potential territories in Turkey for industrial symbiosis of olive pomace, marble wastes and plastics by integrating Fuzzy AHP to GIS

This study aimed to create a mapping-depended methodology in delineating the suitable territories for Industrial Symbiosis (IS) initiatives. The Geographic Information System (GIS)-integrated Fuzzy AHP (FAHP) was applied to the data of olive pomace (OP), marble processing wastes (MPW) and plastic wastes (PP/PET) generated in the whole country (Turkey). In the proposed methodology, factor identifications and their pairwise comparisons need to be made by experts. Factor weighting was implemented by FAHP method for each waste type. The highest FAHP weights were calculated as 0.57 for OP facility capacity, 0.64 for marble facility capacity and 0.41 for plastics industrial estate factors (high consistency: CR < 0.1). Potential region maps were prepared by integrating these factor weights into GIS. The second-stage FAHP was applied for determining the wastes transportation factor weights to be used in the delineation of intersecting regions. At this stage, OP and MPW have the equal and higher factor weights (0.41) than plastic wastes (0.18). The number of provinces having higher potential for establishing IS facility increased from 10 to 22 province as compared to the case with equal transportation weights. Southern Marmara, Aegean, Mediterranean and Central Anatolia were found as the regions with the higher potential for IS initiatives. The common features of the provinces in these regions are high waste generation capacities and spatially closeness to the provinces having high waste generation capacities. The proposed flexible methodology can be adapted to all types of wastes, to all number of factors (criteria) and to all countries.