Anaerobik Biyoreaktördeki Sığır Gübresinin Biyometan Veriminin Termal Ön İşlemlerle Artırılması

Yıl 2023, , 652 - 664, 15.06.2023

İlkay Türk Çakır , Halil Şenol , Ersin Kaygusuz

https://doi.org/10.31466/kfbd.1256566

Cited By: 1

Öz

Ülkemizde ve Dünyada hayvancılığın artması ile ortaya çıkan hayvansal atık miktarı çevre kirliliğinin en önemli kaynaklarından biri olmuştur. Hayvansal organik atıkların biyogaz üretiminde kullanılması, atık bertarafında ve atıklardan enerji geri kazanımında verimli bir atık yönetimi adımıdır. Bu çalışmada, sığır gübresinin mezofilik koşullar altında kesikli reaktörlerde anaerobik sindirim (AS) sonucu biyogaz ve metan (CH4) verimi incelenmiştir. Ardından kesikli reaktörlerdeki AS kalıntısına 60 °C, 80 °C, 100 °C ve 120 °C'de 4 saat termal ön işlemler uygulanmıştır. Ön işlemsiz sığır gübresinin CH4 verimi 203,5 ml/g uçucu katı (UK) iken 120 °C termal ön işlemli sığır gübresinin kümülatif CH4 verimi 251,7 ml/g UK olarak belirlenmiştir. Termal ön işlemler sayesinde sığır gübresinin birim kütle başına CH4 verimi kümülatif olarak en fazla %23,6 kadar artırılmıştır. Termal ön işlemler ile lignoselülozik bileşenlerin (selüloz, hemiselüloz ve lignin) çözünme verimleri incelenmiştir. Aynı zamanda tüm anaerobik süreç sonunda toplam kimyasal oksijen ihtiyaçları ve UK miktarlarının giderim verimleri belirlenmiştir. Çalışma bulguları Türkiye’de üretim yapan büyük ölçekli biyogaz tesisleri için kullanılabilir niteliktedir.

Anahtar Kelimeler

Biyogaz, metan, anaerobik sindirim, sığır gübresi

Destekleyen Kurum

Gİresun Üniversitesi

Proje Numarası

FEN-BAP-A-250221-27

Teşekkür

Bu çalışma Giresun Üniversitesi Bilimsel Araştırmalar Birimi tarafından FEN-BAP-A-250221-27 nolu proje ile desteklenmiştir. İlgili kuruma desteklerinden dolayı yazarlar olarak teşekkürlerimizi sunarız.

Increasing the Biomethane Production of Cattle Manure in Anaerobic Bioreactor by Thermal Pretreatments

Öz

The amount of animal waste resulting from the increase in animal husbandry in our country and in the world has become one of the most important sources of environmental pollution. The use of animal organic wastes in biogas production is an efficient waste management step in waste disposal and energy recovery from waste. In this study, biogas and methane (CH4) yield of cattle manure as a result of anaerobic digestion (AD) in batch reactors under mesophilic conditions were investigated. Then, thermal pretreatments were applied to the AD residue in batch reactors at 60 °C, 80 °C, 100 °C and 120 °C for 4 hours. While the CH4 yield of untreated cattle manure was 203.5 mL/g volatile solids (VS), the cumulative CH4 yield of 120 °C thermal pretreated cattle manure was determined as 251.7 mL/g VS. Thanks to thermal pre-treatments, the CH4 yield per unit mass of cattle manure was increased by a maximum of 23.6% cumulatively. The dissolution efficiency of lignocellulosic components (cellulose, hemicellulose and lignin) with thermal pretreatments were investigated. At the same time, at the end of the whole anaerobic process, the total chemical oxygen needs and the removal efficiency of VS amounts were determined. The findings of the study can be used for large-scale biogas plants producing in Turkey.

Anahtar Kelimeler

Biogas, methane, anaerobic digestion, cattle manure

Proje Numarası

FEN-BAP-A-250221-27

Kaynakça

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