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All Journal International Journal of Renewable Energy Development Jurnal Teknik ITS Jurnal Teknik Kimia Journal of Engineering and Technological Sciences Indonesian Journal of Chemistry JURNAL PHOTON Journal of halal product and research (JHPR) Jurnal Pengabdian dan Peningkatan Mutu Masyarakat (JANAYU) Halal Research Journal Sewagati
Rachmaniah, Orchidea
Chemical Engineering, Institut Teknologi Sepuluh Nopember, Surabaya, INDONESIA
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Journal : Jurnal Teknik Kimia

 1 
Pengaruh Katalis Asam (H2SO4) dan Suhu Reaksi pada Reaksi Esterifikasi Minyak Biji Karet Mira Primasari, Orchidea Rachmaniah dan M. Rachimoellah, Fitri Yuliani, Mira Primasari, Orchidea
Jurnal Teknik Kimia Vol 3, No 1 (2008): JURNAL TEKNIK KIMIA
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v3i1.95

Abstract

Biodiesel productions, generally, use transesterification reaction with base as a catalyst. Thus reaction process will be need raw materials oils in high grade quality. Oils with high content of free fatty acids are not suitable for base-catalyzed transesterification reaction. Because of the difficulty of separation process for purify biodiesel or methyl ester from its mixture in the end of the processes. Rubber seed, until now, still underutilized specially in Indonesia which is has an abundant amount of rubber plantation. Rubber seed contain 40-50%-w of oil, which is potentially use as a raw material for biodiesel production. Use an edible oils, unexpensive materials would be minimized the biodiesel production cost in order to produce high quality of biodiesel with competitive market price. Biodiesel production process which is using rubber seed oil high free fatty acid content as a raw material should be decrease the free fatty acids level in to 2%-FFA orless via esterterification methode. Following with transesterification, afterwards. This research desiged to investigate the effects of catalyst amounts (H2SO4) and temperature reaction of esterification methode. Experiment results show that increasing on temperature reaction would be decresed free fatty acids content. 0,5%-w of acid catalyst amount decreased free fatty acids contents rapidly. There are 1,57% and 1,33%-FFA in 120 minute reaction time, 55 oC and 60oC temperature reaction respectively. For others amount of acid catalyst (0,25%, 1%, and 2%-w), thedecresed level of free acid content were work slowly. Respectively, 3,91; 3,16; and 2,62%-FFA for 0,25%, 1%, and 2%-w of acid catalyst amounts. Esterification reaction conditions: 60oC and 0,5%-w of H2SO4 given the higher FAME content. Keywords : biodiesel, acid-catalyzed transesterification, Hevea brasiliensis, rubber seed oil, basecatalyzed transesterification. 
ALGAE SPIRULINA SP. OIL EXTRACTION METHOD USING THE OSMOTIC AND PERCOLATION AND THE EFFECT ON EXTRACTABLE COMPONENTS Elfera Yosta R., Danang Harimurti W., Orchidea Rachmaniah,
Jurnal Teknik Kimia Vol 4, No 2 (2010): JURNAL TEKNIK KIMIA
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v4i2.124

Abstract

Alga dipandang sebagai bahan baku baru yang berpotensi menghasilkan minyak dengan jumlah yang cukup besar. Selain itu, minyak alga tidak bersaing sebagai komoditi pangan. Spirulina Sp. atau ganggang hijau-biru dipilih dikarenakan waktu panennya sangat singkat dan memiliki kandungan lipid cukup tinggi dibandingkan dengan jenis alga yang lain. Selain itu karakteristik kondisi lingkungan tempat hidup Spirulina Sp. sesuai dengan kondisi cuaca di Indonesia, yaitu pH cenderung basa, suhu 20-40oC. Metode osmotik dipilih mengingat Spirulina Sp. adalah makhluk hidup mikrokopis multi sel yang memiliki membran semipermiabel yang rentan terhadap perubahan tekanan osmotik. Asam klorida dipilih sebagai pelarut karena kedua jenis larutan diatas memiliki tekanan osmotik cukup tinggi sehingga dapat dengan mudah merusak membran semipermiabel yang ada. Metode perkolasi juga dipilih sebagai salah satu metode pembanding, dimana metode ini banyak digunakan sebagai metode rujukan untuk merecovery senyawa-senyawa atsiri bernilai tinggi dibidang farmasi.Hasil penelitian menunjukkan bahwa ekstraksi minyak alga dengan pelarut etanol (99,8%) (77,236%-berat) memberi yield minyak lebih besar dibandingkan dengan pelarut HCl 5 M (71,218%-berat). Semakin banyak volume pelarut yang digunakan, semakin lama waktu pengadukan, dan semakin tinggi molaritas larutan maka semakin meningkat perolehan yield minyak. Kadar air pada fase hidroalkoholik dan waktu perendaman mempengaruhi perolehan yield minyak untuk pelarut etanol (99,8%). Kadar air 37,63% pada fase hidroalkoholik memberi yield minyak sebesar 76,584%-berat.Jenis pelarut yang digunakan turut mempengaruhi komposisi komponen-komponen terekstrak, khususnya FA, MG, GD, dan TG, dan komponen zat warna Spirulina Sp. yang terekstrak.  Keywords :Alga; Ekstraksi; Osmotik; Perkolasi; Spirulina Sp.; Minyak alga. 
Co-Authors Achmad Roesyadi Adi Soeprijanto Agus Surono Agustiani, Elly Ahmad Nezard Dhiaulhaq Airlangga, Bramantyo Akbar, Faisal Ali Altway Altway, Saidah Angga Widya Putra Aparamarta, Hakun Wirawasista Danawati Hari Prajitno Darmawan, Raden Donny Satria Bhuana Fachrudin, Fathi Haqqani Fahmi Fahmi Fahmi Firman Kurniawansyah Geert Jan Witkamp Hendrianie, Nuniek Hendy Pandu Hogantara Herminanto, Rifky P Hikmatun Ni’mah Irfan Ramadhitya Jaap van Spronsen Ju, Yi Hsu Karenina Anisya Pratiwi Karenina Anisya Pratiwi Khamila, Henni Matul Kusdianto Kusdianto Kusumahati, Sari Lailatul Qomariyah Lily Pudjiastuti, Lily Meka, Wahyu Meka, Wahyu Mochammad Zayyan Difa Fadhillah Mochammad Zayyan Difa Fadhillah Muhammad Ilham Ramdlani Muhammad Rachimoellah Muhammad Rifqy Muhsin Naulina, Rosada Y Ni Made Intan Putri Suari Nuniek Hendrianie Nuniek Hendrianie Nuniek Hendrianie Nurkhamidah, Siti Oktavianingrum, Eva Pamungkas, Berlian Widi Bela Pramesti, Tia Antika Putra, Ari Krisna Raden Darmawan Ririn Sumiyani Rizky Tetrisyanda Robert Verpoorte Ryanto Budiono, Ryanto Sabella, Julietta Salwa Sabrina, Melia Indah Safira, Chyntia Aulia Safitri, Bella Intan Sakdiyah, Sakdiyah Samparia, Dian Asrini Sari Kusumahati Siti Machmudah Siti Nurkhamidah Siti Zullaikah Sri Rachmania Juliastuti Sri Rachmania Juliastuti, Sri Rachmania Sri Utami Sumarno . Susianto Susianto Susianto Wahyu Meka Wisnu, Mita Mellenia Yeni Rahmawati Yeni Rahmawati, Yeni Zuchrillah, Daril Ridho