Natural Protective Power: Prevention of Biodiesel Oxidation with Tilia platyphyllos

Öz

Traditional energy sources are incompatible with contemporary environmental sustainability goals, hence renewable and eco-friendly alternatives are more popular. Due to its polyunsaturated fatty acid make up, biodiesel is prone to oxidative breakdown despite its low toxicity, biodegradability, and emissions. This reduces gasoline storage life and engine performance. Tilia platyphyllos extract, a natural phenolic, improved biodiesel-diesel (50% biodiesel + 50% diesel) blends' oxidation resistance in this research. The soxhlet extract was added to the gasoline at 3000 ppm and compared to TBHQ, a synthetic antioxidant. Thermal and chemical characterization methods FT-IR, TGA, and DSC were used to assess antioxidant activity. We tested the extract's ability to eliminate free radicals using DPPH• and ABTS•⁺ assays. The results show that Tilia platyphyllos is a powerful antioxidant that prevents biodiesel-diesel blend oxidative degradation. Biofuel technology might benefit from Tilia platyphyllos.

Anahtar Kelimeler

• Tilia platyphyllos
• Biodiesel
• Natural antioxidant
• Oxidative stability
• DPPH and ABTS assays

Doğal Koruyucu Güç: Tilia platyphyllos ile Biyodizel Oksidasyonunun Önlenmesi

Öz

Geleneksel enerji kaynakları, günümüz çevresel sürdürülebilirlik hedefleriyle uyumsuzdur; bu nedenle yenilenebilir ve çevre dostu alternatifler giderek daha fazla ilgi görmektedir. Biyodizel; düşük toksisitesi, biyolojik olarak kolayca parçalanabilirliği ve düşük emisyon seviyelerine rağmen, çoklu doymamış yağ asidi içeriği nedeniyle oksidatif bozulmaya karşı hassastır. Bu durum, yakıtın depolama ömrünü kısaltmakta ve motor performansını olumsuz etkilemektedir. Bu araştırmada, doğal bir fenolik bileşik olan Tilia platyphyllos ekstresi, biyodizel-dizel (yüzde 50 biyodizel + yüzde 50 dizel) karışımlarının oksidatif direncini artırmak amacıyla kullanılmıştır. Soxhlet yöntemiyle elde edilen ekstre, yakıta 3000 ppm oranında eklenmiş ve sentetik bir antioksidan olan TBHQ ile karşılaştırılmıştır. Antioksidan aktivite, FT-IR (Fourier Dönüşümlü Kızılötesi Spektroskopisi), TGA (Termogravimetrik Analiz) ve DSC (Diferansiyel Taramalı Kalorimetri) gibi termal ve kimyasal karakterizasyon yöntemleriyle değerlendirilmiştir. Ekstrenin serbest radikalleri uzaklaştırma kapasitesi DPPH• ve ABTS•⁺ analizleriyle test edilmiştir. Sonuçlar, Tilia platyphyllos'un biyodizel-dizel karışımının oksidatif bozulmasını önlemede güçlü bir antioksidan olduğunu göstermektedir. Tilia platyphyllos, biyoyakıt teknolojisinde faydalı bir doğal katkı maddesi olarak değerlendirilebilir.

Anahtar Kelimeler

• Tilia platyphyllos
• Biyodizel
• Doğal antioksidan
• Oksidatif stabilite
• DPPH ve ABTS analizleri

Kaynakça

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