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Journals / Türk Biyokimya Dergisi / 2013 / Cilt: 38 - Sayı: 4

Optimization of dilute acid and alkaline peroxide pretreatment to enhance ethanol production from wheat straw

Buğday saplarından etanol üretimini arttırmak için seyreltik asit ve alkali peroksit önarıtım işlemlerinin optimizasyonu

Melek ÖZKAN
Pınar KARAGÖZ
Pages
457–467
Publication Date
2022-11-04
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Objective: The main purpose of this study was to determine the optimal pretreatment process conditions for wheat straw to maximize the overall ethanol yield.

📌 3 Key Takeaways

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Objective & Hypothesis:Objective: The main purpose of this study was to determine the optimal pretreatment process conditions for wheat straw to maximize the overall ethanol yield.
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Key Findings & Data:Results: 0.5% H2SO4 concentration, 15% solid loading, and particle size between 0.75-0.9 mm (20 mesh) was predicted to be optimal by RSM for dilute acid pretreatment and experiment performed at that condition resulted in overall ethanol yield of 12.95%.
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Conclusion & Impact:Conclusion: Alkaline peroxide pretreatment of wheat straw was found to be more effective than dilute acid pretreatment for enhancing bioethanol production from wheat straw by cofermentation
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objective: The main purpose of this study was to determine the optimal pretreatment process conditions for wheat straw to maximize the overall ethanol yield. Methods: The effects of pretreatment conditions for dilute acid and alkaline peroxide pretreatment were investigated using Response Surface Methodology (RSM). Cofermentation with S. cerevisiae and P. stipitis was employed to produce ethanol from pretreated solids. Cellulose and xylan composition of wheat straw, degradability of these compounds, as well as ethanol production, were monitored at different conditions. Results: 0.5% H2SO4 concentration, 15% solid loading, and particle size between 0.75-0.9 mm (20 mesh) was predicted to be optimal by RSM for dilute acid pretreatment and experiment performed at that condition resulted in overall ethanol yield of 12.95%. The maximum overall ethanol yield determined for alkaline peroxide pretreatment is 18.23% and can be achieved when the pretreatment were done with 0.875% H2O2 at 35 °C for 1 h. Experimental results agreed with the responses. Conclusion: Alkaline peroxide pretreatment of wheat straw was found to be more effective than dilute acid pretreatment for enhancing bioethanol production from wheat straw by cofermentation

Özet

Amaç: Bu çalışmanın ana amacı buğday saplarından üretilecek nihai etanol miktarını maksimize etmek için en uygun ön arıtma koşullarının tespit edilmesidir. Gereç ve Yöntemler: Hem seyreltik asit hem de alkali peroksit önarıtım yöntemleri için Yüzey Tepki Metodolojisi (YTM) kullanarak ön arıtma koşullarının etkileri araştırılmıştır. Etanol üretimi için ön arıtıma tabi tutulmuş katılara S. cerevisiae ve P. stipitis ile kofermentasyon uygulanmıştır. Buğday saplarının içerdiği selüloz ve ksilanın parçalanabilirliği etanol üretiminde olduğu gibi değişik koşullarda incelenmiştir. Bulgular: Seyreltik asit önarıtımı için YTM tarafından tahmin edilen optimum koşullar %0.5 H2SO4 konsantrasyonu, %15 katı yükleme oranı ve 0.75-0.9 mm partikül boyutu olarak bulunmuş ve bu koşullarda yapılan deney sonucunda %12.95 nihai etanol üretimi gerçekleşmiştir. Alkali peroksit önarıtımı için tespit edilen en yüksek etanol miktarı ise %18.23 olarak bulunmuş ve bu değere 35 °C 'de 1 saat %0.875 H2O2 ile ön arıtım gerçekleştirildiğinde ulaşılmıştır. Sonuçlar: Deneysel sonuçlar YTM ile elde edilen sonuçlarla uyum içindedir. Buğday saplarından kofermentasyonla etanol üretiminin iyileştirilmesinde alkali peroksit ile ön arıtım işleminin seyreltik asit ön arıtımına kıyasla daha etkili olduğu tespit edilmiştir

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Cite This Article

ÖZKAN, M., KARAGÖZ, P. (2022). Optimization of dilute acid and alkaline peroxide pretreatment to enhance ethanol production from wheat straw. Türk Biyokimya Dergisi, Cilt: 38 - Sayı: 4, 457–467. https://ajindex.com/articles/621290

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