Biogas production from the co-digestion of urban solid waste and cattle manure

Year 2020, Ejosat Special Issue 2020 (ICCEES), 396 - 403, 05.10.2020

Halil Şenol , Mehtap Erşan , Emre Görgün

https://doi.org/10.31590/ejosat.802272

Abstract

In recent years, the need for alternative energy sources has become an urgent concern due to the decline in fossil fuel input and also the disruption of fossil fuels to cause global warming and waste management, which is a human problem. Biogas, an example of alternative energy, can be used to eliminate these problems related to fossil fuels and biodegradable waste management. Since ancient times, biodegradable waste has been the subject of the discovery of environmentally friendly fuel products such as biogas. Animal manure and urban solid wastes produced by humans are the leading ones among these wastes. In this study, anaerobic digestion of different ratios of cattle manure (CM) and municipal solid waste (MSW) was investigated. Anaerobic digestion studies untreated were carried out in mesophilic conditions. In the reactor where CM: MSW mixture ratio is 2: 1, the highest biogas production (222.5 ± 15.7 mL/g solid matter) was realized compared to other mixture ratios. NaOH pretreatments were applied to this mixing ratio with concentrations of 0.1, 0.5, 1 and 2 N in order to increase biogas yield. After NaOH 1N pretreatment, biogas production increased by 47.46% compared to the untreated reactor. As a result of the application of NaOH pretreatment with 2N value, due to possible rapid resolution, biogas production was decreased compared to 1N NaOH pretreated reactor. As a result of the study, it has been understood that CM and MSW can be a good mixture in anaerobic digestion and biogas production can be increased successfully with NaOH pretreatments.

Keywords

Biogas, Cattle manure, Urban solid wastes, NaOH pretreatment

Supporting Institution

Sivas Cumhuriyet University Scientific Research Projects Unit (CUBAP)

Project Number

M-748

Thanks

This study was supported by the Sivas Cumhuriyet University Scientific Research Projects Unit (CUBAP) under project M-748. We appreciate their contribution.

Kentsel katı atık ve sığır gübresinin ko-sindiriminden biyogaz üretiminin incelenmesi

Abstract

Son yıllarda alternatif enerji kaynağına duyulan ihtiyaç, fosil yakıt girdisinin azalması ve ayrıca fosil yakıtların çevreyi bozarak küresel ısınmaya neden olması ve insan sorunu olan atık yönetimi nedeniyle acil bir endişe kaynağı olmuştur. Alternatif enerji örneklerinden biri olan biyogaz, fosil yakıtlar ve biyolojik olarak parçalanabilir atık yönetimi ile ilgili bu sorunları ortadan kaldırmak için kullanılabilir. Çok eski zamanlardan beri, biyolojik olarak parçalanabilen atıklar, biyogaz gibi çevre dostu olan yakıt ürünlerinin keşfinin konusu olmuştur. Bu atıkların başında çoğunlukla hayvan gübreleri ve insanların ürettiği kentsel katı atıklar gelmektedir. Bu çalışmada sığır gübresi (SG) ve kentsel katı atıkların (KKA) farklı oranlardaki karışımlarının anaerobik sindirimi incelenmiştir. Ön işlemsiz anaerobik sindirim çalışmaları mezofilik koşullarda yürütülmüştür. SG: KKA karışım oranının 2:1 olduğu reaktörde diğer karışım oranlarına kıyasla en yüksek biyogaz üretimi (222.5 ± 15.7 mL/g katı madde) gerçekleşmiştir. Bu karışım oranına biyogaz verimini artırmak amacıyla NaOH ön işlemler 0,1, 0,5, 1 ve 2 N konsantrasyonlarda uygulanmıştır. 1N NaOH ön işlem sonucunda biyogaz üretimi ön işlemsiz reaktöre kıyasla % 47,46 oranında artmıştır. NaOH ön işlem konsantrasyonun 2N olması muhtemel hızlı çözünürlük nedeniyle 1N NaOH ön işlemli reaktöre kıyasla biyogaz üretimi azalmıştır. Çalışma sonucunda SG ve KKA’ nın anaerobik fermantasyonda iyi bir karışım olabileceği ve NaOH ön işlemler ile biyogaz veriminin başarıyla artırılabileceği anlaşılmıştır.

Keywords

Biyogaz, Sığır gübresi, Kentsel katı atıklar, NaOH ön işlem

Project Number

M-748

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