title: Assessment of land suitability for olive mill wastewater disposal site selection by integrating fuzzy logic, AHP, and WLC in a GIS.
abstract: This paper presents a geographic information system-based multi-criteria site selection tool of an olive mill wastewater (OMW) disposal site in Sidi Bouzid Region, Tunisia. The multi-criteria decision framework integrates ten constraints and six factors that relate to environmental and economic concerns, and builds a hierarchy model for OMW disposal site suitability. The methodology is used for preliminary assessment of the most suitable OMW disposal sites by combining fuzzy set theory and analytic hierarchy process (AHP). The fuzzy set theory is used to standardize factors using different fuzzy membership functions while the AHP is used to establish the relative importance of the criteria. The AHP makes pairwise comparisons of relative importance between hierarchy elements grouped by both environmental and economic decision criteria. The OMW disposal site suitability is achieved by applying a weighted linear combination that uses a comparison matrix to aggregate different importance scenarios associated with environmental and economic objectives. Three different scenarios generated by different weights applied to the two objectives. The scenario (a) assigns a weight of 0.75 to the environmental and 0.25 to the economic objective, scenario (b) has equal weights, and scenario (c) features weights of 0.25 and 0.75 for environmental and economic objectives, respectively. The results from this study assign the least suitable OMW disposal site of 2.5 % when environmental and economic objectives are rated equally, while a more suitable OMW disposal site of 1.0 % is generated when the economic objective is rated higher.
authors.affiliation: Department of Earth Sciences, Faculty of Science of Bizerte, Carthage University, Jarzouna, 7021, Bizerte, Tunisia. abdelwaheb_2000@yahoo.fr.
authors.forename: Abdelwaheb
authors.initials: A
authors.lastname: Aydi
authors.affiliation: Florida State University, Tallahassee, FL, 32311, USA.
authors.forename: Tarek
authors.initials: T
authors.lastname: Abichou
authors.affiliation: UR-GAMM, Faculty of Sciences of Tunis, University of Tunis El Manar, 2092, Tunis, Tunisia.
authors.forename: Imen Hamdi
authors.initials: IH
authors.lastname: Nasr
authors.affiliation: Laboratory of Geomatics and Structural and Applied Geology, Department of Geology, Faculty of Sciences of Tunis, University of Tunis El Manar, 2092, Tunis, Tunisia.
authors.forename: Mourad
authors.initials: M
authors.lastname: Louati
authors.affiliation: National School of Engineers of Sfax, BP: 1173, 3038, Sfax, Tunisia.
authors.forename: Moncef
authors.initials: M
authors.lastname: Zairi
mesh_terms: D004777:Environment; D004784:Environmental Monitoring / Q000379:methods*; D019649:Food Industry; D017143:Fuzzy Logic; D040362:Geographic Information Systems; D007220:Industrial Waste; D008962:Models, Theoretical; D031658:Olea; D014416:Tunisia; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000737:chemistry*
chemical_list: D007220:Industrial Waste; D062065:Wastewater
keywords: Disposal site; GIS; Multi-criteria evaluation; Olive mill wastewater; Weighted linear combination