Production of Sustainable Biodiesel from Sunflower Oil over Libyan Kaolin Clay Catalyst

Abdulwahab Abu-Awineh; Fathyah Omar Imbarik; Mohammed AL-Abbasi; Aisha AL-ABBASI

doi:10.63359/arzd6j22

المؤلفون

عبد الوهاب ابو عوينة
فتحية عمر مبارك
محمد العباسي
عائشة العباسي جامعة سبها

DOI:

https://doi.org/10.63359/arzd6j22

الملخص

تناول هذا البحث دراسة تحويل زيت عباد الشمس إلى ديزل حيوي (Biodiesel) كبديل صديق للبيئة للوقود الأحفوري، وذلك باستخدام محفزات غير متجانسة مشتقة من طينات الكاولين الليبية (منطقة أقار الشاطئ). تم تحضير المحفز وتنشيطه حرارياً عند 900 درجة مئوية للحصول على الميتا-كاولين (Meta-kaolin) لزيادة نشاطه الحفزي. أُجريت تجارب تفاعل الاستبدال الاستري (Transesterification) عند ظروف تشغيلية شملت نسبة ميثانول إلى زيت 20:1، ووزن محفز بنسبة 5%، عند درجة حرارة 70 درجة مئوية لمدة 4 ساعات. أظهرت النتائج أن الميتا-كاولين حقق كفاءة تحويل عالية بلغت في المتوسط 91.09%، متفوقاً على الكاولين الخام الذي سجل 87.83%. كما تم توصيف الديزل الحيوي الناتج ومقارنته بالمعايير العالمية (ASTM D6751) ، حيث أثبت جودة عالية من حيث اللزوجة الكينماتيكية (3.8 (cSt والقيمة الحرارية 40.56. (MJ/kg) تخلص الدراسة إلى أن الكاولين الليبي يمثل محفزاً فعالاً ومنخفض التكلفة لإنتاج وقود حيوي مستدام.

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