SODYUM HİDROKSİT (NaOH) VE POTASYUM HİDROKSİT (KOH) KULLANILARAK ÜRETİLEN MISIR YAĞI BİYODİZELLERİNİN OPTİMUM REAKSİYON PARAMETRELERİNİN KARŞILAŞTIRILMASI

Year 2015, Volume: 30 Issue: 3, 503 - 511, 30.09.2015

Mert Gülüm Atilla Bilgin Abdülvahap Çakmak

https://doi.org/10.17341/gummfd.81237

Cited By: 13

Abstract

Bu çalışmada, katalizör olarak sodyum hidroksit (NaOH) ve potasyum hidroksit (KOH) kullanılarak transesterifikasyon reaksiyonuyla üretilebilecek en düşük viskoziteye sahip mısır yağı biyodizellerinin optimum reaksiyon parametrelerinin karşılaştırılması amaçlanmıştır. Bu amaç doğrultusunda sırasıyla katalizör oranı, reaksiyon sıcaklığı, reaksiyon süresi ve alkol/yağ mol oranı gibi transesterifikasyon reaksiyonuna etki eden başlıca parametrelerin söz konusu katalizörler kullanılarak üretilen mısır yağı biyodizellerinin kinematik viskozitelerine ve yoğunluklarına etkileri incelenmiştir. Deneysel çalışma sonuçlarına göre, en düşük viskozitelerin elde edildiği optimum reaksiyon parametreleri, NaOH kullanılarak üretilen biyodizel için %0,90 katalizör oranı, 50℃ reaksiyon sıcaklığı, 60 dakika reaksiyon süresi ve 9:1 alkol/yağ mol oranı; KOH kullanılarak üretilen biyodizel için %1,10 katalizör oranı, 60℃ reaksiyon sıcaklığı, 60 dakika reaksiyon süresi ve 9:1 alkol/yağ mol oranı olarak belirlenmiştir. Ayrıca, üretilen en düşük viskoziteli biyodizellerin her ikisinin de yakıt özelliklerinin EN 14214 ve ASTM D 6751 standartlarına uygun olduğu tespit edilmiştir.

Keywords

Biyodizel, transesterifikasyon reaksiyonu, mısır yağı biyodizeli, viskozite, üretim parametreleri, optimizasyon

COMPARISON OF OPTIMUM REACTION PARAMETERS OF CORN OIL BIODIESELS PRODUCED BY USING SODIUM HYDROXIDE (NaOH) AND POTASSIUM HYDROXIDE (KOH)

Abstract

In this study, it was aimed to compare optimum reaction parameters of the lowest kinematic viscosity corn oil biodiesels which can be producible by using sodium hydroxide (NaOH) and potassium hydroxide (KOH) as catalyst and methanol (CH3OH) as alcohol by means of transesterification reaction. Therefore, the effects of main parameters influencing the transesterification reaction such as catalyst concentration, reaction temperature, reaction time, alcohol/oil molar ratio on the kinematic viscosities and densities of produced corn oil biodiesels were investigated. According to experimental results, optimum reaction parameters giving the lowest viscosity were determined as 0,90% catalyst concentration, 50℃ reaction temperature, 60 minutes reaction time and 9:1 alcohol/oil molar ratio for biodiesel produced by using sodium hydroxide, and, 1,10% catalyst concentration, 60℃ reaction temperature, 60 minutes reaction time and 9:1 alcohol/oil molar ratio for biodiesel produced by using potassium hydroxide. Also, fuel properties of each optimum biodiesels were found in accordance with EN ASTM D 6751 and EN 14214 standards.  

Keywords

Biodiesel, transesterification reaction, corn oil biodiesel, viscosity, production parameters, optimization

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