Termal Ön İşlem ile Anaerobik Sindirim Sonrası Tavuk Gübresi Artığından Metan Verimini ve Kinetiğinin İyileştirilmesi

Yıl 2025, Cilt: 15 Sayı: 4, 1618 - 1637, 15.12.2025

Halil Şenol , İlkay Türk Çakir , Ersin Kaygusuz

https://doi.org/10.31466/kfbd.1686752

Öz

Bu çalışma, artan enerji talebi ve fosil yakıtların tükenmesi karşısında tavuk gübresinin biyometan üretiminde değerlendirilmesini amaçlamaktadır. İlk anaerobik sindirim (AS) aşaması sonrası reaktörde kalan katı artık, 60–100 °C aralığında iki saat süren termal ön işleme tabi tutulmuş ve ikinci bir sindirim döngüsünde yeniden değerlendirilmiştir. Ön işlemsiz durumda 232,9 mL/g TK olan kümülatif biyometan verimi, 100 °C termal ön işlemle 318,83 mL/g TK’ye yükselmiş ve belirgin bir iyileşme sağlanmıştır. Kinetik değerlendirme için kümülatif metan verileri Modifiye Gompertz ve Modifiye Lojistik modellerle analiz edilmiş; her iki model de yüksek uyum katsayısı (R² > 0,996) göstermiş, Lojistik model daha düşük RMSE ve SSE değerleriyle deneysel veriyi daha iyi temsil etmiştir. Artan ön işlem sıcaklığı, maksimum metan üretim hızını (μₘ) yükseltmiş ve gecikme süresini (λ) kısaltmıştır. Sonuçlar, AS sonrası tavuk gübresi artığının termal ön işlemle yeniden değerlendirilmesinin biyometan verimini ve süreç kinetiğini iyileştiren etkili bir yöntem olduğunu göstermektedir.

Anahtar Kelimeler

Tavuk gübresi , Termal ön işlem , Biyometan , Kinetik modelleme

Proje Numarası

FEN-BAP-A-250221-27

Teşekkür

Giresun Üniversitesi Bilimsel Araştırmalar Birimi (BAP) tarafından FEN-BAP-A-250221-27 numaralı proje kapsamında çalışmamız desteklenmiş olduğundan dolayı ilgili birime teşekkür ederiz.

Improving Methane Yield and Kinetics from Post-Anaerobic Digestion Chicken Manure Residue Through Thermal Pretreatment

Öz

This study evaluates poultry manure as a renewable substrate for biomethane production under increasing energy demand and declining fossil fuel reserves. After an initial anaerobic digestion (AD) step, the remaining solid residue was thermally pretreated at 60–100 °C for two hours and re-digested. The cumulative biomethane yield increased from 232.9 mL/g TS (untreated) to 318.83 mL/g TS after pretreatment at 100 °C. Kinetic analysis using the Modified Gompertz and Modified Logistic models demonstrated excellent agreement with experimental data (R² > 0.996), with the Logistic model providing slightly better accuracy. Increasing pretreatment temperature enhanced the maximum methane production rate (μₘ) and shortened the lag phase (λ). Overall, thermal pretreatment of post-AD residue is shown to be an effective strategy to accelerate hydrolysis and improve both methane yield and process kinetics.

Anahtar Kelimeler

Poultry manure , Thermal pretreatment , Biomethane , Kinetic modeling

Proje Numarası

FEN-BAP-A-250221-27

Kaynakça

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