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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 274 Documents
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PRODUCTION PROCESS OF LIQUID FERTILIZER FROM BANANA TRUNK Suprihatin, Suprihatin
Jurnal Teknik Kimia Vol 5, No 2 (2011): JURNAL TEKNIK KIMIA
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v5i2.148

Abstract

Banana a plant that many grow in Indonesia. Utilization of banana mostly just takes the fruitand leaves, while the trunk of banana has not been much used. The existence of Ca, P and K in bananatrunk, then the banana trunk can be used as alternative raw material for the production of liquidfertilizer. Produce liquid fertilizer from banana trunk done with the extraction process using a processtemperature of 700C and stirring speed of 240 rpm. Results from the extraction process to analyzelevels of Ca, P and K. Where available Ca content: 16.2% weight, P content: 30.05% weight and Kcontent: 21.5% weight with volume 600 ml of solvent and 15 minutes of stirring time.Key words: banana, liquid fertilizer, extraction. , alternative fertilizer
ISOLATION STUDY OF EFFICIENT α - CELLULOSE FROM WASTE PLANT STEM MANIHOT ESCULENTA CRANTZ Puspita Erka Tamara,, Ketut Sumada,
Jurnal Teknik Kimia Vol 5, No 2 (2011): JURNAL TEKNIK KIMIA
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v5i2.149

Abstract

Waste Manihot esculenta Crantz stems of plants is one of the waste has a high cellulose content. However, current waste plant Manihot esculenta Crantz stems only become organic waste that has not been fully utilized. The study is expected to utilize waste Manihot esculenta Crantz plant stems to produce α-cellulose can be used for paper and solve the problem of the environment especially forests. Waste Manihot esculenta Crantz plant stems as a raw material containing fiber 65.38%, 29.01% leather waste, waste cambium levels of 5.61% and 56.82% α-cellulose. Stages of research to produce α-cellulose include prehidrolisis stage, the stage of delignification, bleaching stages, and analysis of α-cellulose. At this stage delignification used NaOH, Na2SO3, Na2SO4 with varying concentrations of 5, 10, 15, 20, 25% by weight as degrading lignin which is then followed by bleaching stage using H2O2 2% and 5% NaOCl to get a pure α-cellulose. The best results with α-cellulose content of 90.41% in the delignification process Na2SO3 with 20% using 2% H2O2 bleaching. Key words: Waste Plant Manihot esculenta Crantz Trunk, delignification, bleaching, α-cellulose
METYL ESTER PRODUCTION IN ASLANT SEALED TRANESTERIFICATION REACTOR Mulyadi, Edi
Jurnal Teknik Kimia Vol 5, No 2 (2011): JURNAL TEKNIK KIMIA
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v5i2.150

Abstract

Biodiesel, the environment friendly substitute alternative for solar, is made from a resource which can be renewed. Exploiting off grade fish oil as raw material for biodiesel represent the grand breakthrough in increasing value of waste industrial fish. According to research funded by PT Rekayasa Energi Alternative Mandiri (PT. REAM) and DP2M Dikti, industrial scale efficiency can be reached by continuous esterifiications buffle reactor in series with transesterifications sliding reactor. Biodiesel production was done at a reactor prototype which has capacity of 20 liter/hour.From all variables studied, it seemed that temperature and catalyst concentration had the highest effect on the methyl esters conversion, so these variables are controlling parameters. The optimized set of conditions were sodium methoxide (NaOCH3) as the catalyst at a concentration of 0.2 % volume, reaction temperature of 60°C, and 60 menute. The experiments resulted in an average product yield of 94.2%. Biodiesel density of 0.8898 kg/m3 , Iodine number of 7.4, flash point 272 oC, and pour point of 2oC Key words: biodiesel, slanted baffles reactor, transesterification
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
PEMBUATAN EKOSEMEN DARI SAMPAH ORGANIK Rubin Nanda 2) dan Riant Anggraini 2), Nana Dyah Siswati,
Jurnal Teknik Kimia Vol 3, No 2 (2009): JURNAL TEKNIK KIMIA
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v3i2.381

Abstract

The Huge volume of urban garbage despite limited space of garbage dump and inappropriate handling have become complicated and never ended problem. Helped to these issue, the research on Forming Ecocement from organic garbage was carried out. Ecocement was made from the mixture of the ash of organic garbage and limestone. The ashing was started by putting up the dry leaves and branches and some anorganic garbage (i.e paper) in pirolisis reactor, heated at temperatures 100, 150, 200, 250, 300 (oC). The resulted ash was mixed with limestone at (60:40) ; (55:45) ; (50:50) ; (45:55) ; (40:60) (%) ratio and blended with water. Next, the mixture was heated in a temperature of 900 oC for 1 hour. The ash analysis from the pirolisis process indicated that the best ash to produce cement was one that was heated in the temperature of 300 oC in the composition of CaO = 200.591,8 ppm SiO2 = 160.020, 8 ppm Al2O3 = 56.800,9 ppm dan Fe2O3 = 5.510,6 ppm, while the best ratio of ash : lime stone is 55 % : 45 % in the composition of CaO=60,8 % , SiO2 = 16,3 % , Al2O3 = 4,8 %, Fe2O3 = 0,3%. The resulted cement stand the tensile strengt 72,6 kg/cm2, min, in 7 days stored (standard  grade of the tensile strengt 150 kg/cm2, min, in 7 days stored). Key words : Ecocement, Ash of Organik Garbage, Lime Stone.
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

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