Arıtma Çamuru ve Gıda Endüstrisi Atıklarından Karanlık Fermentasyon ile Biyohidrojen Üretimi: Substrat Derişiminin Etkisi

Yıl 2024, Cilt: 9 Sayı: 4, 623 - 631, 31.12.2024

Habibe Elif Gülşen Akbay

https://doi.org/10.35229/jaes.1564156

Öz

Organik atıkların yönetiminde elektrik, ısı, biyo-gübre gibi faydalı ürünlerin eldesine imkân sağlayarak, doğal kaynakların sürdürülebilirliğini destekleyen yenilenebilir nitelikteki biyokütle enerjisinin önemi her geçen gün artmaktadır. Karanlık fermantasyon (KF) ile biyokütleden biyohidrojen üretimi sürdürülebilir ve daha temiz bir teknoloji olması ile öne çıkmaktadır. Tamamlayıcı özelliklere sahip birden fazla atığın birlikte fermantasyonu, daha yüksek biyohidrojen verimliliği elde etmek için umut verici bir yaklaşım olarak değerlendirilmektedir. Bu çalışmada mevsimlere ve arz-talep ilişkisine bağlı olarak işletme koşulları değişiklik gösterebilen meyve suyu üretimi endüstrisi atıkları (MSA) ve kentsel nitelikli arıtma çamurlarının (KAÇ), KF prosesi önderliğinde farklı substrat karışım oranlarında biyohidrojen üretimine etkisi araştırılmıştır. Bu amaçla biyoreaktörlerdeki karışımların toplam katı madde (TKM) oranı %8 olacak şekilde, KAÇ ve MSA içeriği 50:50,75:25 ve 25:75 olan üç farklı deney seti hazırlanmıştır. Anaerobik biyoreaktörler mezofilik sıcaklıkta kesikli sistemde işletilerek biyogaz/biyohidrojen üretim potansiyeli incelenmiştir. Fermantasyon süresi sonunda biyoreaktördeki KAÇ oranının %25’ten, %50 ve %75’e çıkması ile biyohidrojen üretim potansiyelinin sırası ile %14 ve %39,9 oranında artış gösterdiği belirlenmiştir. Bununla birlikte tüm biyoreaktörlerde çözünebilir kimyasal oksijen ihtiyacı (çKOİ) ve karbonhidrat içeriklerinin sırası ile %14-18 ve %54-64 arasında giderildiği tespit edilmiştir. Modifiye Gompertz kinetik modeli tüm biyoreaktörler için deneysel verilere en iyi uyan model (R2≥0,9949) olarak belirlenmiştir.

Anahtar Kelimeler

Biyohidrojen, Biyokütle, Karanlık fermantasyon, Organik atık yönetimi, Sürdürülebilirlik

Etik Beyan

Anadolu Çevre ve Hayvancılık Dergisi (Journal of Anatolian Environmental and Animal Sciences)’ne makale olarak sunduğum “Arıtma Çamuru ve Gıda Endüstrisi Atıklarından Karanlık Fermentasyon ile Biyohidrojen Üretimi: Substrat Derişiminin Etkisi” başlıklı çalışmada deneysel çalışmalar, verilerin değerlendirilmesi, grafiklerin hazırlanması, makale yazım süreci vb. tüm faaliyetleri tek başıma yaptım. Başka kaynaklardan aldığım bilgileri metinde ve kaynakçada eksiksiz olarak gösterdiğim, çalışma sürecinde bilimsel araştırma ve etik kurallara uygun olarak davrandım. Bu ifadelerin aksinin ortaya çıkması durumunda her türlü yasal sonucu kabul ettiğimi beyan ederim. 09/10/24 Yazar Dr. Öğr. Üyesi Habibe Elif GÜLŞEN AKBAY

Destekleyen Kurum

Mersin Üniversitesi Bilimsel Araştırma Projeleri Koordinasyon Birimi

Proje Numarası

2023-1-AP1-4855

Teşekkür

Mersin Üniversitesi Bilimsel Araştırma Projeleri Koordinasyon Birimi’ne desteklerinden ötürü teşekkür ederim (BAP Proje No: 2023-1-AP1-4855).

Biohydrogen Production from Sewage Sludge and Fruit Juice Industry Wastes By Dark Fermentation: Effect of Various Substrate Concentrations

Öz

The importance of renewable biomass energy, which supports the sustainability of natural resources by enabling the production of useful products such as electricity, heat and bio-fertilizer in the management of organic waste, is increasing day by day. Biohydrogen production from biomass via dark fermentation (DF) stands out as a sustainable and cleaner technology. Co-fermentation of multiple wastes with complementary properties is considered a promising approach to achieve higher biohydrogen efficiency. In this study, the effects of fruit juice production industry wastes (MSA) whose operating conditions may vary depending on the seasons and supply-demand relationship and urban sewage sludge (KAÇ), on biohydrogen production at different substrate mixing ratios under the leadership of the DF process were investigated. For this purpose, three different experimental sets were prepared with KAÇ and MSA contents of 50:50, 75:25, and 25:75, so that the total solid matter (TS%) ratio of the mixtures in the bioreactors would be 8%. Biogas/biohydrogen production potential was investigated by operating anaerobic bioreactors in a batch system at mesophilic temperature. It was determined that at the end of the fermentation period, as the KAÇ ratio in the bioreactor increased from 25% to 50% and 75%, the biohydrogen production potential increased by 14% and 39.9%, respectively. Besides, in all bioreactors, soluble chemical oxygen demand (sCOD) and carbohydrate contents were reduced between 14-18% and 54-64%, respectively. The Modified Gompertz equation was determined as the model that best fits the experimental data for all bioreactors (R2≥0.9949).

Anahtar Kelimeler

Biohydrogen, Biomass, Dark fermentation, Organic waste management, Sustainability

Proje Numarası

2023-1-AP1-4855

Kaynakça

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