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INDONESIA
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI
Published by Universitas Diponegoro
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Engineering Industrial & Manufacturing Engineering
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI adalah jurnal yang diterbitkan oleh Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro untuk mempublikasikan karya ilmiah - karya ilmiah mahasiswa Program S1 Teknik Kimia Undip.
Arjuna Subject : -
Articles 44 Documents
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Search results for , issue "Volume 2, Nomor 2, Tahun 2013" : 44 Documents clear
PROSES PENGAMBILAN KEMBALI BIOETANOL HASIL FERMENTASI DENGAN METODE ADSORPSI HIDROPHOBIK Agung Nur Hananto Putro; Sherviena Amanda Ardhiany; S Sumarno
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 2, Nomor 2, Tahun 2013
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

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Abstract

Bioetanol merupakan salah satu energi alternatif pengganti bahan bakar fosil. Proses produksi bioetanol dengan fermentasi menghasilkan yield sebesar 9-11%, dan proses pemurniannya menggunakan metode destilasi yang hanya bisa digunakan jika yield minimal 9%. Penelitian ini untuk merecovery bioetanol pada hasil fermentasi dengan yield di bawah 9% menggunakan metode adsorpsi hidrophobik dengan variabel kendali adalah suhu kamar dan tekanan 1 atm, sedangkan variabel berubah adalah adsorbent, waktu adsorpsi dan ukuran partikel dari adsorbent. Digunakan adsorbent Mg(OH)2, Ca3(PO4)2, Mgsilikat dan Casilikat dengan ukuran partikel 106 dan 150 mm dan waktu adsorpsi 30 dan 60 menit. Adsorpsi yang terjadi adalah adsorpsi hidrophobik dimana bioetanol sebagai solute lebih diserap oleh adsorbent daripada solvent air. Bioetanol yang terlarut dalam adsorbent dipisahkan dari solvent dengan cara disaring kemudian diuapkan untuk mendapatkan bioetanol murni. Hasil dianalisa dengan metode cawan Conway. Hasil yang diperoleh bahwa adsorbent yang paling baik menyerap etanol adalah Mgsilikat dengan ukuran partikel 106mm dan waktu 60 menit.
PEMANFAATAN MINYAK GORENG BEKAS DAN ABU KULIT BUAH KAPUK RANDU (SODA QIE) SEBAGAI BAHAN PEMBUATAN SABUN MANDI ORGANIK BERBASIS TEKNOLOGI RAMAH LINGKUNGAN Naliawati Prastiya Ningrum; Muhamad Alfin Indra Kusuma; Nur Rokhati
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 2, Nomor 2, Tahun 2013
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

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Abstract

Capok Randu (Ceiba petandra (L)) Gaerin van Indica (D.C) are most everseen in Indonesia mainly as horticulture in Central Java, with the total areas of95.107,17 ha. Manufacture of capok randu’s ash leather called Soda Qie and itcontains 78%W of potassium. In the other hand, consumption of frying oil inIndonesia is very high and it increases annually, up to 500.000 tons/year. Ex fryingoil produced still contains plenty of free fatty acid and it can be used as raw materialin preparation of soap with soda qie as a source of alkaly by saponification reaction.This experiment aimed to find the optimum operation condition in soap preparationand the its reaction kinetic. This experiment is designed using RSM method (ResponseSurface Methodology) and software Statistica 6. Parameters in this research are exfrying oil volume of 100 ml, soda qie solution concentration of 300 g / 1000 ml, andsaponification reaction time of 60 minutes. Independent variables are the reaction temperature of 30, 60, 90 oC, ratio of soda qie volume : ex frying oil volume 3:1 ; 4:1; 5:1 ml. Optimation is conducted at saponification reaction time variables of 30, 60,90, 120 minutes. Observed responses are amount of Free Fatty Acid (FFA), and freealkali of the product. The optimum operation condition are gained at temperatur of90oC, reactant ratio of 3:1. In the soap product, the number of FFA are 0,80%, andthe number of free alkali are 0,08%, this is fulfill the SII.0005-72. The rate constantgained were 0,068 menit-1.
PROSES PRODUKSI BIODIESEL DARI MINYAK BIJI KARET DENGAN PROSES REAKTIF DISTILASI Jonathan Ginting; Praditya Nugraha; Bakti Jos
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 2, Nomor 2, Tahun 2013
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

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Abstract

Harga minyak bumi yang terus melambung tinggi memaksa terus dilakukannya upaya pencarian dan penelitian sumber energi alternatif baru. Salah satu sumber energi alternatif yang paling menjanjikan adalah biodiesel dari minyak biji karet. Dikarenakan bahan baku yang dapat diperbaharui dan tersedia melimpah. Dalam penelitian ini menggunakan proses reaktif distilasi dimana proses konversi dan pemisahan berlangsung secara serentak atau sinambung. Paremeter operasi yang akan dipelajari rasio katalis dan suhu serta pengaruhnya terhadap karakteristik produk biodiesel yang dihasilkan .Hasil analisis karakteristik bahan diperoleh kadar minyak yang cukup tinggi yakni 50,5%. Konversi minyak menjadi metil ester yang diperoleh paling besar adalah sebesar 25,86% . Variabel perbandingan volume asam lemak bebas dengan methanol lebih berpengaruh dibandingkan dengan variabel temperatur.
STUDI KINETIKA REAKSI EPOKSIDASI MINYAK SAWIT Revina Allundaru; Tanty Wisley Sitio; Setia Budi Sasongko
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 2, Nomor 2, Tahun 2013
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

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Abstract

Epoxidized triglycerides as a product of epoxidation have found important applications as plasticizers and additives for polyvinyl chloride (PVC). The raw material usually used is natural oil based. The usage of this raw material can give negative effects, one of them is the non-degradable characteristic. In addition, natural oil is non-renewable resources and the usage of raw material based from natural oil can increase the CO2 emission.According to the reasons above, renewable and bio-degradable alternative resources start to be found. One of this resources is plant oil and this research concern to epoxidation of plant oil. Plant oil which is used in this research is palm oil. In this research, we are going to study the influence of reaction time and temperature to the epoxide value, and reaction kinetics parameters.Palm oil was characterized with an iodine value of 58,37%w/w was in situ epoxidized by hydrogen peroxide and formic acid and the presence of benzene to reduce oxirane ring opening. Then the product was distillated to separate the epoxidized oil from the dissolved solvent. The epoxidized oil was neutralized by washing it twice in hot aquadest for 15 minute to remove the remaining acid compound.Palm oil epoxidation kinetic is known from the formation on epoxide compound during the reaction time. The rate constant of reaction at 30oC was 1,523864 x10-4 l/mole sec, at 40oC was 1,01755 x 10-5 l/mole sec, and at 50oC was 3,353358 x 10-4 l/mole sec. The activation energy of the palm oil epoxide formation was 29,391 kJ/mole. The conclusion of this research is that palm oil can be used as raw material to produce epoxide compound, this was identified by the epoxide value.

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