Assessment of waste management circularity in provinces by using material and substance flow analysis: A case study of Düzce province

Yıl 2025, Cilt: 14 Sayı: 3, 1049 - 1058, 15.07.2025

Kadriye Elif Maçin

https://doi.org/10.28948/ngumuh.1615960

Öz

The study aims to show how the combination of material flow analysis (MFA) and substance flow analysis (SFA) can be used as a basis for circularity assessment in waste management systems. In this context, a framework has been presented and a case study focusing on solid waste management in Düzce province has been applied. According to the specified framework for circularity calculation, four specific steps must be followed. These are (1) defining the purpose and scope; (2) data collection for a comprehensive study like MFA; (3) calculating circularity with selected indicators; and (4) evaluating the results. The circularity of packaging waste is 44.5%, while the circularity of the biomethanization facility in Düzce was found 13.2% for nitrogen and 4.4% for phosphorus. Although the suggested framework can be applied to other studies beyond circularity, it has economic limitations. MFA results on a municipal scale can support waste management capacity planning and prevent overcapacity.

Anahtar Kelimeler

Solid waste management , Circularity , Material flow analysis , Substance flow analysis , Recycling , Mass balance , STAN.

Malzeme ve madde akış analizi ile illerin katı atık yönetiminin döngüselliğinin incelenmesi: Düzce ili örneği

Öz

Bu çalışma, malzeme akış analizi (MAA) ile madde akış analizi (MDAA) kombinasyonunun illerde atık yönetimi ve döngüsellik değerlendirmesi için temel olarak nasıl kullanılabileceğini göstermeyi amaçlamaktadır. Bu kapsamda bir çerçeve sunulmuş ve Düzce ili katı atık yönetimi üzerine bir vaka çalışması gerçekleştirilmiştir. Döngüsellik hesabının yapılabilmesi için sunulan çerçevede belirtilen dört adım takip edilmelidir. Bunlar, (1) amaç ve kapsamın belirlenmesi; (2) MAA gibi kapsamlı bir çalışma için gerekli verilerin toplanması; (3) seçilen göstergeler aracılığıyla döngüselliğin hesaplanması ve (4) sonuçların değerlendirilmesidir. Vaka çalışmasının sonuçlarına göre, ambalaj atıklarının döngüsellik oranı %44.5 olarak tespit edilmiştir. Buna karşılık, Düzce'deki biyometanizasyon tesisinin döngüsellik oranı azot için %13.2 fosfor için ise %4.4 olarak belirlenmiştir. Önerilen çerçeve değerlendirildiğinde, döngüselliğin ötesine geçerek diğer hedef odaklı çalışmalara uygulanma potansiyeli taşımasına karşın özellikle ekonomik boyutlarda sınırlamalarının olduğu göz önünde bulundurulmalıdır. MAA’nın belediye ölçeğinde kullanılması, atık yönetim kapasitesinin planlanmasını destekleyebilir ve bu sayede olası aşırı kapasitenin önlenmesini sağlayabilir.

Anahtar Kelimeler

Katı atık yönetimi , Döngüsellik , Malzeme akış analizi , Madde akış analizi , Geri dönüşüm , Kütle dengesi , STAN.

Kaynakça

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