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INDONESIA
Jurnal Teknik Kimia
Published by Universitas Pembangunan Nasional Veteran Jawa Timur
ISSN : 19780419     EISSN : 26558394     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry
Jurnal Teknik kimia fokus pada proses perpindahan panas dan massa, material maju, teknik reaksi kimia, pengolahan dan pengelolaan limbah, biomassa dan energi, termodinamika, biokimia, elektrokimia, perancangan dan pengendalian proses, proses pencampuran dan pemisahan. Rung lingkup (Scope) Jurnal Teknik Kimia meliputi semua aspek yang berhubungan dengan bidang teknik kimia, ilmu kimia. dan semua proses reaksi kimia.
Arjuna Subject : -
Articles 8 Documents
 1 
Search results for , issue "Vol 6, No 2 (2012): Jurnal Teknik Kimia" : 8 Documents clear
PROSES HIDROLISIS SAMPAH ORGANIK MENJADI GULA DENGAN KATALIS ASAM KLORIDA Zainal Arifin, Dedy Irawan
Jurnal Teknik Kimia Vol 6, No 2 (2012): Jurnal Teknik Kimia
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v6i2.382

Abstract

Hydrolysis is one of the most important stages of bioethanol production made ​​from organic waste. Hydrolysis with dilute hydrochloric acid concentration was varied from 0.25-1% with a temperature of 120-180oC and time of 15-120 minutes. Reactant ratio 1:6 between organic waste and dilute hydrochloric acid for every stage hydrolysis was reacted in a batch reactor system. The sugars concentrations in the hydrolyzate were then analyzed by Nelson-Somogyi method. The results showed that the best conditions for hydrolysis was found at temperature of 120oC, catalyst concentration of 0.75%, time of 30 minutes and the pressure of 4 bar with the sugar concentration of 29.34 mg/mL and the yield of 13.09%. Key word : hydrochloride acid , hydrolysis, sugar concentration, yield
PEMUCATAN MINYAK SAWIT MENTAH MENGGUNAKAN ARANG AKTIF Muhammad Ali, Wahyuni, Haryono
Jurnal Teknik Kimia Vol 6, No 2 (2012): Jurnal Teknik Kimia
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v6i2.383

Abstract

Crude Palm Oil, CPO, is a strategic commodity that has economic value, because it is a main raw material to manufacture a variety of food consumer products. CPO is the most produced edible oil in the world. The purpose of this research were to find an alternative adsorbent of bleaching earth, i.e. activated carbon,  and to test the ability of activated carbon as bleaching agent in the bleaching process of CPO.  This research was involving, the activation process of carbon, degumming process of CPO with the addition of phosphoric acid, bleaching process with activated carbon, and analysis to the palm oil produced.  In this study, bleaching process carried out at temperature variations of 90, 100, 110, and 120 oC, and variations of the activated carbon’s concentration at 3, 4, and 5% (by weight) for 30 minutes. Based on this research, the activated carbon has potential as alternative adsorbent for bleaching process of CPO with bleaching power of 93% at the bleaching temperatute of 120 oC and concentration of activated carbon by 5% (by weight). In this bleaching process conditions, after degumming process, the resulted palm oil have the brightness level of 40 mg/L Pt, acid value of 5,66 mg KOH/g, phosphor content of 3,31 ppm, and water content of 0,06% (by weight). Keywords : activated carbon, bleaching, concentration of adsorbent, palm oil, temperature.
PENINGKATAN KADAR BIOETANOL DARI KULIT NANAS MENGGUNAKAN ZEOLIT ALAM DAN BATU KAPUR Harimbi Setyawati, Nanik Astuti Rahman
Jurnal Teknik Kimia Vol 6, No 2 (2012): Jurnal Teknik Kimia
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v6i2.384

Abstract

The use of zeolite and limestone as an adsorbent in an attempt to improve the purity of bioethanol from pineapple rinds. Sugar content contained in pineapple rinds is only about 8% so it is still very little bioethanol produced. Of the fermentation process of pineapple rinds  juice with Saccaromyces cereviceae  and ethanol distillation process obtained the highest levels of only 3.9%. With the distillation repeated for three times the concentration of ethanol does not increase, it is necessary for an alternative method is to purification other adsorption processes. Adsorbents used in this study is the natural zeolite and limestone obtained from the southern city of Malang. The results showed that the ethanol content increased to once passed through the zeolite adsorbent and limestone. Activation treatment, both physically and chemically strongly influences the adsorption process. Key words : adsorption, bioethanol, lime stone, zeolite
EKSTRAKSI KARAGINAN DARI RUMPUT LAUT (Eucheuma spinosum) DENGAN VARIASI SUHU PELARUT DAN WAKTU OPERASI Risa Sepdwiyanti, Suci Dian Sari, Mohammad Istnaeny Hudha 1)
Jurnal Teknik Kimia Vol 6, No 2 (2012): Jurnal Teknik Kimia
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v6i2.385

Abstract

One type of seaweed that has good potential and often found in the waters of Indonesia is Eucheuma spinosum (including red algae) which can produce karaginan. Karaginan is a complex mixture from several polysaccharides. In this study, aiming to get the best extraction time and temperature in the product of karaginan from Eucheuma spinosum. Variables used, extraction temperature: 60, 70, 80, 90 (0C) and extraction time: 0.5, 1, 1.5, 2, 2.5 hours. The solvent used, is water and the extraction pH is 8, the ratio of solids solvent: 1: 20 (= 30 g of seaweed: water = 600 mL). From the research results obtained the best persetage of yield at the time 2.5 hours and the temperature 90 ° C, at which in extracted karaginan this condition have yield of 33.0080%. Keywords : Carrageenan, Eucheuma spinosum, Extraction
MODEL MATEMATIK PENGERINGAN LAPIS TIPIS WORTEL Setyopratomo, Puguh
Jurnal Teknik Kimia Vol 6, No 2 (2012): Jurnal Teknik Kimia
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v6i2.386

Abstract

Drying is one of the most significant method in food preservation. This study was conducted to investigate mathematical models of thin layer drying of carrot slices. The kinetic of thin layer drying of carrot slices was experimentally investigated in a hot air convective dryer. Crank solution for difusion in slab model for drying in thin layer were used to predict the drying profile. Drying characteristic of carrot slices were determined using air at 50 oC , 60 oC, 70 oC and  80 oC at air linier velocity  0.4167 m/s. The result showed that before material deformation was taken place the Crank solution model was suitable for long- periode drying. Key words: carrot, drying, mathematical model
PENGGUNAAN MINYAK NYAMPLUNG SEBAGAI BAHAN BAKAR ALTERNATIF PENGGANTI MINYAK TANAH Jimmy, Jimmy
Jurnal Teknik Kimia Vol 6, No 2 (2012): Jurnal Teknik Kimia
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v6i2.387

Abstract

Vegetable oil have a higher flash point compared with kerosene. Because of the higher flash point, it would require an effort to lower the flash point. This study aimed to determine the effect of the composition ratio of ethanol and ethyl lactate in lowering nyamplung oil flash point. To determine the ratio of ethanol and ethyl lactate, preliminary experiments carried out by the addition of additives in the ratio 1:1; 1:2; 1:3; 2:1; 2:3 on nyamplung oil for determining the solubility of additives in the nyamplung oil. The result gives good  solubility for ratio 1:1. Concentrations of ethanol additive used each are 0%, 1%, 2%, 3%, 4%, 5%. Nyamplung oil used as much as 200 grams. Additives mixing made in stirred vessel at room temperature with slow stirring for 10 minutes. It can be concluded that the addition of ethanol and ethyl lactate additive effect on the decline in oil flashpoint nyamplung, nyamplung oil with ethanol and ethyl lactate concentration of each of the 2% obtained by the flash point 550C, density 0.9358 g/cm3 and viscosity 43.71 mm2/s. Nyamplung oil with additive ethanol and ethyl lactate more appropriately applied to the press stove. Keywords: composition of ethanol and ethyl lactate, flash point, nyamplung oil
DATA KESETIMBANGAN UAP-AIR DAN ETHANOL-AIR DARI HASIL FERMENTASI RUMPUT GAJAH Sari, Ni Ketut
Jurnal Teknik Kimia Vol 6, No 2 (2012): Jurnal Teknik Kimia
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v6i2.388

Abstract

The high purity of ethanol (Pro Analitic) commonly used for row material to get the VLE Value, but the research used the technical ethanol that from distillation of the product bulrush  fermentation. The research purpose to find the value of VLE on the binary system ethanol-water. Then the result compared with literature. Still othmer glass was used as main device and the row material from high purify ethanol (PA) and moderate. Moderate Purity ethanol (Technical ethanol). These row material combine with various composition are 0; 0,2 ; 0,4 ; 0,6 ; 0,8 ; 1 (mole Fraction) and constant  pressure 300 bar. Next, the product was analyzed by spectrophotometer pharo 100. Then the result was compared with literature value and show that the value close to the literature value. From the VLE curve show that the azeotropic point in the composition of ethanol 0,98 (molefraction) Keywords : Azeotropes, azeotropic point, bulrush, VLE on the binary system ethanol-water,
BRIKET ARANG KULIT KACANG TANAH DENGAN PROSES KARBONISASI Retno Dewati, Rezy Putri Ragilia, Tieka Kharisma 2), Kindriari Nurma Wahyusi 1)
Jurnal Teknik Kimia Vol 6, No 2 (2012): Jurnal Teknik Kimia
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v6i2.389

Abstract

 The Peanuts peel can be converted to charcoal through  the carbonization process with tapioca moulded as adhesive. Making  briquettes from peanut peel is usefull as an alternative fuel. Peanut peel were cutted in two parts and dried in open air.  Next, it were carbonized in 200 0C, 225 0C, 250 0C, 275 0C and 300 0C and 300 0C for 90 minutes. Then the charcoal ware pounded and sieved to make it in uniform size (40 mesh). Then it was weighed in 25 grams, 50 grams, 75 grams, 100 grams and 125 grams. And then mixed with adhesive moulded. The moulded briquettes were dried through the air for 24 hours and then it were heated in the oven with 100 0C for 1 hour. Then the briquettes were analyzed calorific value, ash content, water content and color of flame. Finally, the highest calorific value of charcoal briquettes was on the composition of peanut peel 75 grams and 250 0C, it give 6536.98 kcal / kg. The lowest water content in the composition of 125 grams and 300 0C, it give 2,014%.  And the lowest ash content generated in the composition of 75 grams and 200 0C, it give 7,39%. Key words : Carbonization, Charcoal Briquette, moulded, peanut skin,

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