Determination of the Effects of Thermal and Chemical Pretreatment on Biogas Production from Sewage Sludge and Sugar Beet Pulp

Year 2019, Volume: 23 Issue: 3, 679 - 686, 25.12.2019

Burak Peker , Filiz Dadaşer Çelik

https://doi.org/10.19113/sdufenbed.492778

Abstract

In this
study, biogas production from sugar beet pulp and sewage sludge was examined.
In order to increase the efficiency of biogas production from these materials,
the effects of thermal and chemical pretreatments were evaluated. During the
study, anaerobic treatment was carried out under mesophilic condition for 30
days. Biogas production levels and methane contents in biogas were measured
daily. The sewage sludge produced methane at the level of 67 L/kg VS (volatile
solids) without pretreatment, while the methane production from the sugar beet
pulp without pretreatment was 84 L/kg VS. When sugar beet pulp and wastewater
sludge were used together as raw materials, the production level of methane was
103 L/kg VS. Thermal and chemical (O₃ and NaOH) pretreatments were
applied to sugar beet pulp and sewage sludge mixtures. The methane production
level of the mixture with thermal pretreatment was 116 L/kg VS, the methane
production level with basic pretreatment with NaOH was 99 L/kg VS and the
methane production level of the mixture subjected to ozone pretreatment was 133
L/kg VS. As a result, chemical and thermal pretreatments were found to increase
biogas production from waste materials. 
Pretreatments applied to raw materials converted the organic material to
more degradable forms and higher biogas yields were obtained.

Keywords

Biogas, Chemical pretreatment, Thermal pretreatment, Sugar beet pulp, Wastewater sludge

Termal ve Kimyasal Önişlemlerin Atıksu Çamuru ve Şeker Pancarı Küspesi Karışımından Biyogaz Eldesindeki Etkilerinin Belirlenmesi

Abstract

Bu
çalışmada, evsel atık suların arıtılması sonrası oluşan arıtma çamuru ve şeker
fabrikalarından atık olarak çıkan şeker pancarı küspesi kullanılarak biyogaz üretim
düzeyleri incelenmiştir. Bu maddelerden biyogaz üretim veriminin arttırılması
için termal ve kimyasal önişlemlerin etkileri değerlendirilmiştir.  Çalışmada 30 gün süreyle mezofilik şartlarda
anaerobik işlem uygulanmış, biyogaz üretim düzeyleri ve biyogaz içindeki metan
oranları ölçülmüştür. Önişlem uygulanmamış şeker pancarı küspesinden metan
üretim düzeyleri 84 L/kg UKM (uçucu katı madde) olarak gerçekleşirken, önişlem
uygulanmamış arıtma çamuru 67 L/kg UKM düzeyinde metan üretmiştir. Şeker
pancarı küspesi ve arıtma çamuru birlikte hammadde olarak kullanıldığında ise
metan üretim düzeyi 103 L/kg UKM olarak gerçekleşmiştir. Şeker pancarı küspesi ve
arıtma çamuru karışımlarına termal ve kimyasal (O₃ ve NaOH) ön
işlemler uygulanmıştır. Termal ön işlemli karışımın metan üretim düzeyi 116
L/kg UKM, NaOH ile önişlem uygulanmış karışımın metan üretim düzeyi 99 L/kg UKM
ve ozon ile önişlem uygulanmış karışımın metan üretim düzeyi ise 133 L/kg UKM
olarak gerçekleşmiştir. Sonuç olarak, kimyasal ve termal önişlemlerin
atıklardan biyogaz eldesini arttırdığı tespit edilmiştir. Hammaddelere
uygulanan önişlemler organik maddenin daha kolay bozunabilir hale gelmesini
sağlamış, böylece daha yüksek biyogaz üretimi gerçekleşmiştir. 

Keywords

Biyogaz, Kimyasal önişlem, Termal önişlem, Şeker pancarı küspesi, Arıtma çamuru

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