ESTIMATION OF METHANE GENERATION AND ENERGY POTENTIAL OF NIGDE LANDFILL SITE USING FIRST ORDER MATHEMATICAL MODELLING APPROACHES

Yıl 2019, Cilt: 7 Sayı: 1, 126 - 135, 25.03.2019

Gülden Gök

https://doi.org/10.21923/jesd.405047

Cited By: 4

Öz

Methane content of landfill gas is approximately 50%. Methane has a significant calorific and economic value, rather than its greenhouse effect. Therefore, it is essentially important to estimate future LFG and methane production in terms of usage and management policies. More than a few models have been used to computerize prospective methane trends based on deposited waste characters and climatic information. This study aims to calculate LFG and methane production using different models. The model inputs were adopted from field measurements, waste characterization, meteorological information, and technical papers prepared by Conestoga-Rovers & Associates (CRA), Intergovernmental Panel on Climate Change (IPCC), and United States Environmental Protection Agency (EPA). This study indicates that the first order models have different outcomes for Niğde Landfill Site and the increase in methane generation potential value causes higher generation volumes of LFGs for the future. The maximum total LFG production is estimated as 600 million m³ with a methane potential of 126 m³/ton and total methane yield for the same method was calculated as 312.5 million m³. This study also estimates the maximum electricity generation from LFG. The maximum electricity generation was estimated 6.9 million kWh for 2042.

Anahtar Kelimeler

Energy potential, Landfill gas, Methane generation, Methane modelling

NİĞDE DÜZENLİ DEPOLAMA ALANININ METAN ÜRETİMİ VE ENERJİ POTANSİYELİNİN BİRİNCİ DERECEDEN MATEMATİKSEL MODELLEME YAKLAŞIMLARI İLE TAHMİNLENMESİ

Öz

Düzenli
depolama gazlarının (DDG) yaklaşık %50’sini metan gazı oluşturmaktadır. Metanın
sera etkisinden başka önemli ölçüde kalorifik ve ekonomik değeri vardır. Bu
nedenle, gelecekteki DDG ve metan üretiminin kullanım ve yönetim politikaları
açısından tahmin edilmesi önemlidir. Gelecekteki metan salınımlarını katı atık
karakteristiklerine ve iklim bilgilerine göre hesaplamak için birden fazla
model kullanılmıştır. Bu çalışmada, farklı modeller kullanılarak DDG ve metan
üretiminin hesaplanması amaçlanmıştır. Model girdileri saha ölçümlerinden, atık
karakterizasyonundan, meteorolojik bilgilerinden ve Conestoga-Rovers &
Associates (CRA), Hükümetler arası İklim Değişikliği Paneli (IPCC) ve Amerika
Birleşik Devletleri Çevre Koruma Ajansı (EPA) tarafından hazırlanan teknik
dokümanlardan elde edilmiştir. Bu çalışma, birinci derece modellerinin Niğde
Depolama Sahası için farklı sonuçlara sahip olduğunu ve metan üretimi
potansiyel değerindeki artışın, gelecek için daha yüksek DDG oluşumuna neden
olduğunu göstermektedir. Toplam maksimum DDG üretimi, 126 m³/ton
metan potansiyeli ile 600 milyon m³ olarak tahmin edilmiştir ve aynı
yöntem için toplam metan verimi 312,5 milyon m³ olarak
hesaplanmıştır. Bu çalışma aynı zamanda DDG’den elde edilecek maksimum elektrik
üretimini de tahmin etmektedir. 2042 yılı için maksimum elektrik üretimi 6,9
milyon kWh olarak hesaplanmıştır.

Anahtar Kelimeler

Enerji potansiyeli, Düzenli depolama gazı, Metan oluşumu, Metan modellemesi

Kaynakça

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