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All Journal Reaktor International Journal of Renewable Energy Development METANA Sawala : Jurnal Administrasi Negara Indonesian Journal of Chemistry Jurnal Organisasi Dan Manajemen Prosiding Seminar Nasional Sains dan Teknologi Terapan Conference on Innovation and Application of Science and Technology (CIASTECH) JIA (Jurnal Ilmiah Agribisnis) : Jurnal Agribisnis dan Ilmu Sosial Ekonomi Pertanian ASEAN Journal of Chemical Engineering JUMANTIK: Jurnal Mahasiswa dan Peneliti Kesehatan Ilmu Pendidikan International Journal of Renewable Energy Development

Silviana Silviana

Department Of Chemical Engineering, Faculty Of Engineering, Diponegoro University, Jl. Prof. Soedarto SH, Tembalang, Semarang 50275, Central Java, Indonesia

Author-ID : 380399

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Neuroscience Social Sciences Other

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PENAMBAHAN POTASSIUM CHLORIDE PADA BIOPLASTIK PATI SAGU DENGAN BERPENGUAT MIKROFIBRIL SELULOSA BAMBU BERBANTUKAN SONIKASI Silviana Silviana; Puji Rahayu
Reaktor Volume 17 No. 3 September 2017
Publisher : Dept. of Chemical Engineering, Diponegoro University

Sago starch based bioplastics as food packaging have drawbacks such as soft, and easily broken. This paper explains improvement of sago starch-based bioplastics reinforced with bamboo microfibrillated cellulose (MFC). Furthermore, this paper investigates effect of dispersing agent on mechanical property by using of potassium chloride (KCl) assisted by ultrasonic homogenizer. Variable used experiments were bamboo MFC concentration of 1%; 3% and 5% w/w and KCl concentration of 1%; 2% dan 3% w/v. Sago starch-based solution was prepared from 4% w/v of commercial sago starch. The mixed solution was gelatinized at temperature of 90 oC. The result showed that the 5% of bamboo MFC increased tensile strength of sago starch-based bioplastics due to purpose of bamboo MFC as reinforcement of sago starch. Further, additional of KCl reduced the dispersing time for 1 hour. Optimum result in this preliminary experiment was obtained at bamboo MFC of 5% w/w and KCl concentration of 1% w/v resulting tensile strength of 17.99 MPa.

EFEK PENYIMPANAN BIODIESEL BERDASARKAN STUDI KAJIAN DEGRADASI BIODIESEL CPO Silviana Silviana; Luqman Buchori
Reaktor Volume 15 No.3 April 2015
Publisher : Dept. of Chemical Engineering, Diponegoro University

BIODIESEL STORAGE EFFECT BASED ON DEGRADATION OF CPO BIODIESEL Biodiesel denotes as ester mono alkyl of long chain fatty acid such as CPO (crude palm oil) which can biologically degrade more than 98% within three (3) weeks, whereas fossil fuel degrade partially only. The objective of research was to investigate degradation of biodiesel during storage. The scope of this research covered the container design, storage condition, initial analysis of CPO biodiesel, and degradation rate during product storage by using oxidation rate of biodiesel. The results showed that there was degradation on CPO biodiesel during product storage. It can be seen from increasing of acid value and saponification number, decreasing of iodine number, increasing of total glycerol value, and decreasing of ester number in biodiesel product. Storage period prediction of biodiesel can be approached by using equation, i.e. ????=0.0012????2−0.0052????+0.0609. In this research, the maximum storage period of CPO biodiesel achieved at 27 weeks. Other result showed that well storage was achieved with closed-galvanized container.Keywords: biodiesel; CPO; degradation; storage period AbstrakBiodiesel merupakan ester mono alkil dari asam lemak rantai panjang, seperti CPO (crude palm oil) yang terdegradasi lebih dari 98% secara biologi dalam 3 minggu, sedangkan bahan bakar diesel hanya terdegradasi sebagian. Penelitian ini bertujuan untuk mengamati proses degradasi biodiesel selama masa penyimpanan. Penelitian ini meliputi rancangan tangki biodiesel, kondisi penyimpanan, analisa awal biodiesel, dan studi laju degradasi pada tahap penyimpanan produk dengan ditelaah laju oksidasi pada biodiesel.Hasil penelitian menunjukkan bahwa selama periode proses penyimpanan terjadi proses degradasi biodiesel. Hal ini terlihat dari hasil analisa yang menunjukkan bahwa terjadi kenaikan angka asam selama proses penyimpanan, kenaikan angka penyabunan, penurunan bilangan iodine, kenaikan kadar gliserol total dan penurunan kadar ester di dalam biodiesel. Prediksi periode penyimpanan biodiesel dapat didekati dengan persamaan ????=0,0012????2−0,0052????+0,0609. Dari persamaan tersebut diperoleh bahwa periode maksimal penyimpanan biodiesel adalah 27 minggu. Hasil penelitian juga menunjukkan bahwa penyimpanan biodiesel CPO yang paling baik adalah dengan menggunakan bahan galvanized dengan kondisi penyimpanan yang tertutup.

Co-Authors Abdul Halim Adi Darmawan Afriza Ni'matus Sa'adah Agus Subagio Ahmad Alvinal Azmi Anang M Legowo Andy Hardianto Anisa Widia Utami Arie Restu Wardhani Ayu Wulandari Bella Ayu Silawanda Candra Aditya Cantika Aulia Salsabila Dadang Hermawan Didi Dwi Anggoro Fahmi Arifan Febio Dalanta Febio Dalanta H Hadiyanto H. Hadiyanto Ismael Saleh Istiqomah Muryaningsih Kevin Aprilio Kevin Ryo Pratama Luqman Buchori Muhammad Aswar Limi Muslimin, M. Nurwantoro Nurwantoro Piontek Benedictus Brandon Puji Rahayu Purnama Putra, Purnama Siti Susanti Syuraini, Syuraini Vebrina Hania Cholily Yelta Okta Dina

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