Compost Plant Site Selection for Food Waste Using GIS Based Multicriteria Analysis

Abstract

Marketplace waste collection is one of the crucial services provided by the district municipalities in Turkey. A significant amount of food waste is periodically collected from marketplaces. However, an important opportunity for recycling and mitigation climate change is missed because these waste are sent to landfills. Composting, one of the waste management technologies applied to organic waste to reduce greenhouse gas emissions and produce compost, is often preferred for the management of marketplace waste. This study aims to determine suitable locations for compost facilities to manage marketplace waste with the help of GIS considering economic, environmental, and topographic factors in Izmir, Turkey. There are 199 marketplaces in Izmir and each has at least one market a week. Each marketplace was weighted by means of population served by using location-allocation analysis since the amount of waste collected from the marketplaces is not known. First, an exclusion analysis was performed to remove limited use areas. Then, a preference analysis was performed. Factors affecting plant site selection process for composting marketplace waste, including marketplace locations and weights, were determined. Since all factors do not have equal importance, the analytical hierarchy process was used to determine weights for each factor based on their influence. The study area was spatially evaluated for each preference factor and a suitability map was created for each factor. Finally, a high-resolution final suitability map was obtained by combining each factor’s suitability map along with their weights. Areas with a suitability index greater than 80% have been defined as suitable areas for compost facility installation. The results indicate that there are 323 potential locations suitable for compost facilities in Izmir.

Decentralized Composting Analysis Model—The Qualitative Analysis Path

“…The most discussed conflicts in the literature for the various types of composting systems are [25][26][27][28][29]:…”

“…The composting site should fulfil certain requirements and criteria in order to minimize potential conflicts. It should be accessible, be located near water and energy infrastructures, and include a "sufficient" buffer zone, which can help in cases of malfunction or dysfunction of the composting system [25][26][27][28][29].…”

“…It, therefore, appears as a "Go or No-Go" criterion, meaning that if such an area is not available, the whole project cannot be implemented. This area should be selected according to specific regulations and the conditions of the local environment [25][26][27][28][29]. If the former do not exist, then they should be adapted from other locations, locally or around the world, with successful composting projects.…”

Decentralized Composting Analysis Model — The Qualitative Analysis Path

“…The most discussed conflicts in the literature for the various types of composting systems are [21][22][23][24][25]: 1. Site selection for DC system 2.…”

Usage of GIS-based Nominal Valuation Method in Creating Value Maps: The Case of Foça/İzmir

“…Bunun yanında CBS, veriler arası anlamlı ilişkiler kurarak yerinde kararlar vermemizi sağlar. CBS, Kamusal uygulamalardan [27], tarımsal uygulamalara [28], yer seçiminden [29], akıllı şehir/kampüs uygulamalarına [30] kadar birçok farklı alanda kullanılmaktadır. Tüm bu bahsedilen alanlara ek olarak taşınmaz değerleme alanında da kullanılıp fayda sağlanan eşsiz bir teknolojik platformdur [4,31,32].…”