| dc.description.abstract | Telah dilakukan penelitian pembuatan katalis heterogen dari limbah cangkang keong emas (Pila ampullacea), untuk konversi biodiesel minyak dedak padi. Penelitian ini bertujuan untuk mengetahui efektivitas penggunaan abu cangkang keong (Pila ampullacea) yang mengandung CaO (kalsium oksida) serta menemukan metode yang efektif dan efesien dalam konversi biodiesel, Katalis dipreparasi dengan cara menggerus cangkang keong, dilanjutkan dengan kalsinasi pada temperatur 900oC selama 2 jam. Padatan yang diperoleh dianalisis menggunakan instrumen FTIR, SEM-EDX, XRD, dan uji kebasaan. Aktifitas katalitik katalis cangkang keong diuji dalam reaksi transesterifikasi minyak dedak padi dengan perbandingan volume minyak:metanol = 20:80 secara refluks berturut-turut selama 1 jam, 3 jam dan 5 jam serta dengan metode microwave selama 30 menit.
Hasil karakterisasi dengan FTIR terlihat adanya gugus O-C-O dari karbonat monodentat pada bilangan gelombang 1463.05 cm-1 dan adanya CaO (Ca-O) pada bilangan gelombang 407.02 cm-1. Hasil analisis EDX menunjukan adanya unsur Ca 60.01% dan O 24.36 %. Selain itu, hasil analisis difraksi sinar-X (XRD) menunjukan terbentuknya kristal CaO dengan adanya puncak khas CaO yaitu pada peak 2θ = 32.48ᵒ, 37.22ᵒ, 50.64ᵒ, 54.14ᵒ, dan 64.02ᵒ. Dari hasil uji aktivitas katalis, dengan variasi waktu refluks 1 jam, 3 jam, dan 5 jam, berturut-turut dihasilkan mL rendemen biodiesel sebanyak 12.92 mL, 10.99 mL, dan 13.98 mL. Serta dengan metode microwave dalam waktu reaksi 30 menit, mL rendemen biodiesel yang dihasilkan sebanyak 17.41 mL.
A research on making heterogeneous catalyst from waste of golden snail shells (Pila ampullacea), for biodiesel conversion of rice bran oil has been investigated. This research aim to determine the effectiveness of using shell ash (Pila ampullacea) which contains CaO (calcium oxide) and to find an effective and efficient method in biodiesel conversion. The catalyst was prepared by crushing the snail shell, followed by calcination at 900oC for 2 hours. The obtained solids were analyzed using FTIR, SEM-EDX, XRD instruments and alkalinity test. The catalytic activity of the snail shell catalyst was tested in transesterification reaction of rice bran oil with oil volume ratio: methanol = 20: 80 by reflux in successively for 1 hour, 3 hours and 5 hours and microwave method for 30 minutes.
The result of characterization with FTIR showed the presence of O-C-O group of monodentic carbonate at wave number 1463.05 cm-1 and the presence of CaO (Ca-O) at wave number 407.02 cm-1. EDX analysis results showed the presence of Ca 60.01% and O 24.36%. In addition, the results of X-ray diffraction analysis (XRD) showed the formation of CaO crystals in the presence of typical peaks of CaO in peak 2θ = 32.48ᵒ, 37.22ᵒ, 50.64ᵒ, 54.14ᵒ, and 64.02ᵒ. From the results of catalyst activity test, with variation of reflux time of 1 hour, 3 hours, and 5 hours, successively produced mL yield of biodiesel as much as 12.92 mL, 10.99 mL, and 13.98 mL. As well as the method of microwave within 30 minutes of reaction time, produced mL yield of biodiesel as much as 17.41 mL. | en_US |
