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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 3, No 1 (2008): JURNAL TEKNIK KIMIA" : 8 Documents clear
ANALISIS PERENCANAAN TENAGA KERJA DI PERUSAHAAN REDRYING TEMBAKAU SARTIN, SARTIN
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.v3i1.104

Abstract

Planning of labour is activity of determination of amount and labours types required by an organizations for aperiod of which will come. Therefore planning of labour is with refer to activity related to forecasting of requirement oflabour in a period of to come at one particular organization, cover new labour preparation and utilization which haveis available. Or equally determine the labour movement from position in this time towards position which wanted in aperiod of to come. In this research done by analysis and enumeration concerning planning of labour at company ofredrying tobacco which will make a change is internal that is doing installation of new machine by paying attention tosome policies and purpose of specified by companies. Method which applied is programming linear, while processingwhich implemented is determine and define decision variable then expressed in mathematical symbol, develop(buildaimed at mathematical model is programming linear formulation then calculate objective function for each purpose ofthat is minimizing redundancy and minimize expense where in this enumeration applied by computer software aid QMor windows version 2.2, software for quantitative method, management science or operational research. From resultcalculation and analysis seen that planning of labour with policy for minimizing redundancy and policy for minimizingexpense yield difference of result calculation enough signifikan.Keyword:Planning of labour ( manpower planning), programming linear
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.
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
Pengaruh Katalis Asam (H2SO4) dan Suhu Reaksi pada Reaksi Esterifikasi Minyak Biji Karet Mira Primasari, Orchidea Rachmaniah dan M. Rachimoellah, Fitri Yuliani, Mira Primasari, Orchidea
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.v3i1.95

Abstract

Biodiesel productions, generally, use transesterification reaction with base as a catalyst. Thus reaction process will be need raw materials oils in high grade quality. Oils with high content of free fatty acids are not suitable for base-catalyzed transesterification reaction. Because of the difficulty of separation process for purify biodiesel or methyl ester from its mixture in the end of the processes. Rubber seed, until now, still underutilized specially in Indonesia which is has an abundant amount of rubber plantation. Rubber seed contain 40-50%-w of oil, which is potentially use as a raw material for biodiesel production. Use an edible oils, unexpensive materials would be minimized the biodiesel production cost in order to produce high quality of biodiesel with competitive market price. Biodiesel production process which is using rubber seed oil high free fatty acid content as a raw material should be decrease the free fatty acids level in to 2%-FFA orless via esterterification methode. Following with transesterification, afterwards. This research desiged to investigate the effects of catalyst amounts (H2SO4) and temperature reaction of esterification methode. Experiment results show that increasing on temperature reaction would be decresed free fatty acids content. 0,5%-w of acid catalyst amount decreased free fatty acids contents rapidly. There are 1,57% and 1,33%-FFA in 120 minute reaction time, 55 oC and 60oC temperature reaction respectively. For others amount of acid catalyst (0,25%, 1%, and 2%-w), thedecresed level of free acid content were work slowly. Respectively, 3,91; 3,16; and 2,62%-FFA for 0,25%, 1%, and 2%-w of acid catalyst amounts. Esterification reaction conditions: 60oC and 0,5%-w of H2SO4 given the higher FAME content. Keywords : biodiesel, acid-catalyzed transesterification, Hevea brasiliensis, rubber seed oil, basecatalyzed transesterification. 

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