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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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OLEORESIN FROM GINGER USING EXTRACTION PROCESS WITH ETHANOL SOLVENT Dwi Daryono, Elvianto
Jurnal Teknik Kimia Vol 6, No 1 (2011): JURNAL TEKNIK KIMIA
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v6i1.77

Abstract

Use of ginger was grow commercially in processing that use appropriate technology. Refining of oiland ginger oleoresin from ginger rhizome growing to be a raw material in pharmaceutical companiesmanufacture drugs. Components of chemical compounds contained in ginger consists of oil evaporated,oil does not evaporate and starch. This research aims is to extraction of ginger oleoresin. Variables thatperformed in this study include the extraction temperature (30, 40, 50 and 60 ° C) and extraction time (1,1.5, 2, 2.5 and 3 hours). While the operating conditions involved the comparison of materials andsolvents of etanol 70%, materials size measure ± 40 mesh, ginger type of emprit and speed turn around60 rpm. Ginger powder counted 300 gram and solvent 1500 ml entered into ekstraktor with time andtemperature of extraction according to variable. After finishing result of extraction entered into rotaryvacuum evaporator to be dissociated between oleoresin and solvent. Analysis batchwise to specific gravity,refractive index, rendemen and % gingerol. The best condition got by at oleoresin extraction of gingerwith temperature of extraction 40oC and time of extraction 3 hour, where got specific gravity 0,9012 gr /cm3, refractive index 1,4769, rendemen 9,98% and % gingerol 33,23%.Keywords : extraction, ginger, oleoresin
PECTIN FROM PAPAYA PEEL Novel Karaman, Yohandrik, L.Urip Widodo,
Jurnal Teknik Kimia Vol 6, No 1 (2011): JURNAL TEKNIK KIMIA
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v6i1.78

Abstract

Extraction from adhesive substance between tissue chell in the papaya peel wouldproduce a product called pectin. The aim of this research was to obtain pectin from papayapeel. Ten miligrams of papaya peel with the size of 40 mesh added with 200 ml of aquadesl,then add also HCl with various concentration: 0.01 N, 0.015 N, 0.02 N, 0.025 N, and 0.03N.The extraction was done at 80 0C temperature for: 1, 1.5, 2, 2.5 and 3 hours after that solutionextracted filtered to separate the concentrate and filtrate. The concentrate discharded and thefiltrate was pectin. Pectin filtrate then heated at temperature of 95 ° C while stirring intensivelyuntil the volume obtain half then the original volume. The filtrate cooled using acid alcohol,and stirred until evenly. After mixed evenly, filtrate left over fot about 10-14 hours. Theprecipate pectin then separated, washing with 95% neutral alcohol, and dried in an oven at 40oC for 6 hours. Dry pectin content weighed and analyzed the content of methoksil. The bestconditions result: the rendement of pectin obtained 9.2% and the content methoksil papaya peelwas 8.87% at 2 hours with the concentration of HCL 0.02 N.Keywords: extraction time, papaya peel, pectin
BIOETHANOL FROM COFFE PEEL WASTE WITH FERMENTATION PROCESS Mohammad Yatim, Rachm, Nana Dyah Siswati,
Jurnal Teknik Kimia Vol 6, No 1 (2011): JURNAL TEKNIK KIMIA
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v6i1.80

Abstract

When coffee is processed, 35% of it is in the form of coffee peel waste which is a source oforganic materiali and has high levels of cellulose and is available in abundance in Indonesia, sothat can be harnessed to become bioethanol. As anlternative energy fuel, bioethanol which hashigher oxygen to content (35%) to fuel, burns moreperfectly, it also has higher octane value(118)and contains lower CO emissions 19-25%, and thus it is more environmentally friendly. Theprocess of producing bioethanol from coffee peel waste is carried out by hydrolyzing the wasteinto glucose using H2SO4 catalyst and HCl. Afterwards glucose is fermented into bioethanol usingthe bacterium Zymomonasmobilis. By implementing the variables of fermentation time, and theconcentrations of Zymomonasmobilis stater. Research shows that coffee peel can be used as analternative to produce bioethanol the process of hydrolysis and fermentation, the best resultsbeing obtained at a concentration of 11% starter and fermentation time of 7 days producebioethanol as much as 51.02% having the content 38.68% levels.Key words: Bioethanol, Fermentation, Hydrolysis, Coffee peel waste.
Solubilitas Gas CO2 dalam Larutan Potassium Karbonat Khoirul Anam dan Yan Provinta, Kuswandi,
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.v3i1.97

Abstract

The Carbon dioxide (CO2) gas is the product from nature source as specially from nature gas.Once methode for CO2 concentration reduction is absorption with potassium carbonate solution.This research is experimental study for performances increase in absorption process and wettedwall column as absorber concentration potassium carbonate varied in the range 10-30% (weight)and temperature varied in the range 30-60oC. Estimation calculation with vapor-liquid equilibriumand chemical reaction with ENRTI model. The result show that the value of mol CO reduction is with temperature increasse and Potassium Carbonate concentration increase. Compare estimation result with experimental show small different.
HIDROLISIS BATANG PADI DENGAN MENGGUNAKAN ASAM SULFAT ENCER N. Soeseno, N. Chiptadi dan S. Natalia, Akbarningrum Fatmawati,
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.v3i1.99

Abstract

Glucose is usually known as a source of energy for organisms. Fermentation of glucose canproduce many useful products such as ethanol, which can be used for renewable energy source,replacing fuel oil. Glucose can be derived from many foodstuffs such as cassava, yam, grass,wheat, potato, corn, etc. Such foodstuffs contain polysaccharide that can be hydrolyzed intoglucose. Rice straw is one of natural waste materials with high cellulose content which can beutilized for glucose production to avoid competition with foodstuff needs. In this research diluteacid hydrolysis of rice straw is investigated using slurry concentration of 30% w/v. The effects of temperature (70, 85, 100oC), sulfuric acid concentration (0.3; 0.6; 0.9 %v/v), and particle size ofrice straw (8, 10, 20 mesh) on the reducing sugar yield are observed. In this research, the resultshows that the increase of set temperature will increase the final reducing sugar concentration.The decreasing size of the rice straw will increase the reducing sugar concentration. The higherthe sulfuric acid concentration the higher reducing sugar concentration will be. The maximumcondition obtained from this research is at the set temperature of 100oC, sulfuric acidconcentration of 0.9 %v/v, and size of rice straw of 20 mesh (0.841 mm). This condition willproduce 1.1583 gram/liter of final reducing sugar concentration with 38.61 mg/g of yield.
PROSES PEMISAHAN ION NATRIUM (Na) DAN MAGNESIUM DALAM BITTERN (BUANGAN) INDUSTRI GARAM Hapsari, Nur
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.v3i1.100

Abstract

Electrodyalises membrane could be used as a separation material of minerals from Bittern (lowsalt content). According to the several literatures data’s proved that the electrodialyses membrane could be used as a separation material for low salt content liquid optimally. So that the minerals content on bittern could be separated and worthwhile optimally. According to the research indicate that the best result of sodium ion (Na) obtained 21,425.90 ppm feeder concentration, 2.8 volt current voltage and 30 minutes operational time and 78.43% rejection. Whereas the Magnesium (Mg) obtained 15,795.30 ppm feeder concentration, 2.5 volt current voltage and 150 minutes operational time and 97.02% rejection.Key word : membrane, cation, anion, voltage, electrodyalises
KAJIAN PENURUNAN Ca DAN Mg DALAM AIR LAUT MENGGUNAKAN RESIN Kimia, Teknik
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.v3i1.101

Abstract

Salt is one of the most important thing in our daily life. Salt witch produce by farmer to consumed used haven’t the quality of salt ingredients. The aim of this research is to enchange the quality ofsalt ingredient from sea water by using ion exchange methode. The sea water from storage tankflow to ion exchange column with flow rate certain. Resin Dowex -50 weight 1000 gr is used inthis research .Product from resin column analyzed each hours. The flow rate and contact time are varied . Early consentration from sea water : Ca2+ : 253.8 mg/l and Mg 2+ : 1079.4 mg/ l. Theresult show that contact time in the resin column are very important in Ca and Mg ions reduction.,there fore the velocity ( debite ) needs to be measured to quaranty that the contact time hasproduce the massiv procentage amount. Reduction of Ca ion good relative at flow tae 5 l/ hour at5 hours , the consentration Ca ion is 53.11 %. For Mg ion , consentration reache 43.69 % at flowrate 10 l/ hours.  Key words :sea water, resin, ion exchange 
EKSTRAKSI DAN STABILITAS WARNA UBI JALAR UNGU SEBAGAI PEWARNA ALAMI Ulya Sarofa dan Dhini Anggrahini, Sri Winarti,
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.v3i1.102

Abstract

Use sintetic colouring agent for food and baverage not safe, because in most of sintetic colouringagent contain dagerous metal. Because of that to have need to found natural colouring agent.The potential natural colouring agent is anthocianin from purple potato sweet. Anthocianin wasextracted with mixture organic solvent (water, ethanol and acetic acid) in defference proportion.The purpose of this research is to found the optimum proportion of solvent for extractionanthocianin from purple sweet potato and to know stability colour was extracted. This researchtwo  step : one step was extracted anthocianin with mixture organic solvent water, ethanol andacetic acid (5:1:25; 10:1:20; 15:1:15; 20:1:10 dan 25:1:5). Design in this research is RandomDesign with 1 factor, data from experiment analisis with ANAVA and DMRT. Two step was teststability colouring agent from exchange of pH, sugar solutin, salt solution, temperature heating,time heating and for aplikation to made jelly and agar-agar. The result on one step research showthat the optimum organic solvent for extracted anthocianin was 5:1:25 (water:aceticacid:ethanol), with pH solvent 6,80 and polarity 32,77 was produce highest concentration ofanthocianin 1,3170 mg/100gr. The result on two step research show that anthocianin from purpleKey word: Sweet potato, Extracted, natural colouring agent, Ipomoea batatas L.potato sweet more stable at pH acid that pH basic, stable at sugar solution until 50 %, stable atsalt solution until 8 %, stable at heating until 80 °C, stable at heating until 60 menit, and sable formade jelly and agar-agar.
SIMULASI ALIRAN GAS-SOLID-LIQUID DALAM BIOREATOR MEMBRAN TERENDAM Endah Palupi, Aisyah
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.v3i2.107

Abstract

Hydrodynamics characteristic for the mixing of gas-solid-liquid in membrane bioreactorsubmerged (MBRs) and its influence on mass transfer was studied computationally at various solid concentration, incoming gas rate, and the baffle distance. Computational method was conducted by using software GAMBIT 2.1.6. for the making of the grid which represents the calculation domain and conduct the simulation using CFD software FLUENT commercial code 6.2.16. The calculation result was recorded after the iteration reach the certain convergence level.Multiphase flow in reactor was simulated with mixture model, while to model the turbulence characteristic of the flow standard k-ε model was used. The geometric system studied is bioreactor in the form of box with flat bottom, 2 baffles, submerged hollow fiber membrane and air passage at the bottom of the reactor. For the membrane modeling, it is used two approachesthat is membrane as black box and membrane as porous media. The liquid used is water, and the solid is activated sludge, and air acts as gas phase. The result indicates that gas-solid-liquid system with the nearest baffle location from the membrane cause, the liquid dispersion process goes faster, so that fluid in the tank can be mixed perfectly and it can increase the gas-liquid mass transfer rate and the flux at MBRs.The increase of the solid concentration does not significantly affect the change of gasliquid mass transfer rate and flux through the membrane, but the increase of air flow rate can increase the gas-liquid mass transfer and the flux. Porous media approach give the prediction of the gas hold up distribution more over all than black box approach. The position of baffle 9 cm from tank wall is the best position viewed from the balance between the of air flow with the circulating fluid flow. Considered from the solid distribution, double inlet MBRs is better compared to that of single inlet. Flux obtained does not show significant difference. From both approaches of the membrane model, membrane model as porous media give the simulation results closer to the experimental data.Keyword:MBRs, hydrodynamic, simulation CFD, gas-solid-liquid
YELLOW SWEET POTATO STARCH HYDROLYSIS INTO GLUCOSE ENZYMATICALLY Risnoyatiningsih, Sri
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.v3i1.103

Abstract

Glucose is a monosaccharide found in many fruits, and plants obtained through a process using enzymehydrolysis of starch saccharide. Sweet potato starch Hydrolisis run with three neck flask equipped with astirrer. In Liquifikasi stage, three-neck flask is inserted into the starch solution which has been set temperatureand the pH was added HCI and in the heat, then added α-amylase enzyme in a certain time. Saccharification second stage, where the results liquification cooled, set the temperature and pH on certain conditions. Then added enzyme giukoamilase by volume according to the specified variable, and incubated at a given time. At acertain time interval was taken a few examples of the analyzed samples will be analyzed glucose levels Process behavior observed in this study were changes in temperature, hydrolysis time and the addition of enzymes, the best hydrolysis results obtained at 60 ° C, pH 4.5 and the addition of 0.7 ml of glucoamylase and time hydrolysis 5 days with glucose levels reaching 5 , 65% and conversion yield of 66.8% and 22.59%.Key words: Sweet Potato Starch, Liquificationi, saccharifictsion, glucose, α-amylase enzyme

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