Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University, Indonesia
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@article{JKSA15666, author = {Riza Habibi and Enny Fachriyah and Dewi Kusrini}, title = {Sintesis Biodiesel dari Minyak Mikroalga Nannochloropsis Sp. Melalui Transesterifikasi Menggunakan Katalis Basa}, journal = {Jurnal Kimia Sains dan Aplikasi}, volume = {13}, number = {1}, year = {2010}, keywords = {Biodiesel; Nannochloropsis sp.; Transesterifikasi; Katalis Basa}, abstract = {Telah dilakukan penelitian tentang sintesis biodiesel dari minyak mikroalga Nannochloropsis sp . melalui transesterifikasi menggunakan katalis basa. Isolasi minyak mikroalga dilakukan dengan metode ekstraksi soxhlet menggunakan pelarut n-heksan, diperoleh ekstrak minyak dalam fraksi lipid sebanyak 23,793 gram dengan rendemen 5,28 %. Sintesis biodiesel/metil ester asam lemak melalui transesterifikasi dengan variasi katalis KOH dan K 2 CO 3 . Metil ester yang terbentuk dianalisis menggunakan 1 H NMR. Puncak proton metoksi dari metil ester tampak pada δ ± 3,7 ppm. Luas puncaknya menunjukkan kelimpahan proton metoksi dari metil ester pada penggunaan katalis K 2 CO 3 lebih besar dari penggunaan KOH. Hasil analisis GC-MS menunjukkan komposisi asam lemak penyusun minyak mikroalga adalah asam miristat, palmitoleat, palmitat, linolelaidat, elaidat, dan stearat. Biodiesel B5 mikroalga ( blending 5% biodiesel dan 95% solar murni) mempunyai sifat viskositas kinematik 40°C sebesar 4,71 mm 2 .s -1 dan density 15°C sebesar 862 kg.cm -3 . Hasil analisis ini menunjukkan bahwa sifat viskositas kinematik dan density biodiesel B5 mikroalga memenuhi syarat dalam batasan standar Dirjen Migas.}, issn = {2597-9914}, pages = {30--35} doi = {10.14710/jksa.13.1.30-35}, url = {https://ejournal.undip.ac.id/index.php/ksa/article/view/15666} }
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