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Jawa timur
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 9 Documents
 1 
Search results for , issue "Vol 6, No 1 (2011): JURNAL TEKNIK KIMIA" : 9 Documents clear
ALTERNATIVE ENERGY BIOGAS FROM CHOCOLATE PEEL Mardhita Arlindawati, Sri redjeki, Dias Asmoro Putra,
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.v6i1.81

Abstract

The development of alternative energy fuel technology at present many are produced from biologicalresources, eg the manufacture of biodiesel and biodiesel as a fuel substitute for gasoline. This aims to obtainbiogas that can be used as alternative energy and find operating conditions that produce appropriate levelsof CH4 in the standard Indonesian. The first stage is done by preparing 1 liter of raw materials ie brown rindand water are then mixed with a starter (cow dung) 10% of the volume of raw materials and the addition ofyeast and grass after it is mixed until blended. Then put into containers / bottles that have been fitted hose,water manometer, and the gas holder. The research was done in stages with the conditions that you run.Variables that run is a comparison of raw material (1:1; 1:1.5; 1:2; 1.5:1; 2:1), observation time (5 days, 10days, 15 days, 20 days, 25 days , 30 days), and the variable addition of grass (50 gr, 100 gr, 150 gr, 200 gr).From the results of this study found the greatest level of 74.22% in comparison 1 (water): 1.5 (brown skin)with the addition of 150 g of grass while low levels of 60.04% in comparison 2 (water): 1 (brown skin ) withthe addition of 200 g of grass, the results of this study meets the National Standards of Indonesia.Key words: Biogas, grass, yeast
CITRONELLAL FROM CITRONELLA OIL BY WAY OF VARYING THE MIXING VELOCITIES AND THE ADDITIONS OF SODIUM BISULFITE Muyassaroh, Muyassaroh
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.v6i1.82

Abstract

At present the efforts to develop the cultivation of citronella oil has been given special attentionby the Indonesian Government. From various kinds of volatile crop kinds, one that is potential to bedeveloped is fragrant lemon grass. The fragrant lemon crops, fragnant lemongrass, which is a grasscrop which belongs to the group called Cymbogon nardus, is one that has great potensial to bedeveloped, The Technology used to produce volatile oil consist of 3 methods: pressing, solventextraction, and distillation. This research aims is to isolation Citronellal from Citronella Oil. In thisresearch the method used was refining the vapour and the water, followed by isolating citronellal fromcitronella oil and adding natrium bisulfite solution. This addition was aimed at acquiring the maximumlevel of citronellal that could be used as an active material for termiside or bakterial medicines. Theresearch result showed that the best quality of citronella was acquired when the Natrium Bisulfiteaddition was 20 gram, and the mixing velocity 150 rpm, producing 40.26% level of geraniol with adensity of 0,8867 gram/ml.Key words: Isolation, Natrium Bisulfite, Cymbopogan Winterianus, Sitronellal
ABSORPTION CO2 GAS USING MONOETHANOLAMINE Ricky Priambodo2), Sylvia Purnomo3), Hermawan Sutanto4), Wentalia Widjajanti5), Endang Srihari 1) ,
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.v6i1.83

Abstract

The air on an area of solid industry, having a level pollution that high . it is muchcaused the process of combustion done by most of the industry , whereby on the process ofcombustion will be produced a gas of dioxide carbon ( CO2 ) that edangers . Hence , requireda method to depress figures pollution resulting from the womb overgrowth CO2 in the air the ,one of them is with the process of absorption .CO2 absorption process usingmonoethanolamine (MEA) performed in a packed column absorber aims to determine the priceof overall volumetric mass transfer coefficient of the gas phase to the variable operation andknow the value of the interfacial area per unit volume packing (a) of the price of the coefficientvolumetric mass transfer. CO2 gas flowing to the packed column using MEA as a solvent. Theresults are overall volumetric mass transfer coefficient of the gas phase, KGa the greater therate of CO2 gas at a constant flow rate of MEA and its getting bigger. Likewise, under the sameconditions, the price of interfacial area per unit volume will increase packing. But at aconstant rate of MEA with greater gas flow rate of CO2 will cause the overall mass transfercoefficient of the gas phase, KGa decreases. While at the greater concentration of MEAsolution will cause the KGa is increasing. The interfacial area per unit volume packing is notaffected by changes in gas flow rate and concentration of MEA.Key words: Absorption of CO2,, Monoethanolamine, overall volumetric mass transfercoefficient of gas phase, interfacial area per unit volume packing
ANALISA TRANSFER MASSA DISERTAI REAKSI KIMIA PADA Kusnaryo, Radya Purna Wijaya, Ali Altway,
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.v6i1.85

Abstract

The aim of this research is to study mass transfer in CO2 absorptions a packed column for nonisothermal reversible reactions. The study was developed experimental and simulation co2 with air andpotassium carbonate solution is the matter used in this research.The arrangement counter current packed column to which a CO2 – air mixture flow is feed from the bottomand potassium carbon from the top of column.The work of simulation developed with microscopic mass and energy balance in column.The effect of flow absorbent and K2CO3 concentration is study do to percent CO2 removal. The results is;in range flow 3-5 l/mm have 10 % diviasi and range flow : 5-7 l/mnt was have deviasi in range 10-30 %Key words :mass transfer, absorption, non-isothermal, packed column
TEMPERATURE AND ACETIC ACID CONCENTRATION OPTIMATION IN THE EPOXIDATION REACTION OF PALM OIL METHYL ESTER Emma Savitri, dan Christopher Aditya Sivananda, Edy Purwanto,
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.v6i1.75

Abstract

Vegetable oils are rich in content unsaturated fatty acid from the type of oleic acid, linoleic acid andlinolenic acid that can be converted to epoxide groups. Epoxidized oil has many useful applications such asplastisizer to improve flexibility, elasticity and stability under the influence of heat and radiation. In thisresearch, palm oil was converted first to become palm oil methyl ester (POME), followed by epoxidationreaction to produce epoxidized palm oil methyl ester (EPOME). Response surface method (RSM) was performedfor optimization and to study the influence of reaction temperature and molar ratioPOME/CH3COOH on the conversion reaction and oxirane value. An optimal reactional condition was shownby high oxirane content which was in the form of oxirane counts/number. Epoxidation reaction was run inthe batch reactor using acetic acid as an oxygen carrier. Central Composite Design (CCD) with two independentvariables and two response function was utilized to investigate the effect of input variables. Theresult shows that reaction conversion increased with the rise of reaction temperature and molar ratio ofPOME/CH3COOH before reaching the maximum point, and then it monotonously decreased. The optimaloperating condition for epoxidation reaction was indicated by maximum oxirane value which could bereached by the reaction temperature of 56.3 oC and molar ratio POME/CH3COOH of 1:0.43Key words: epoxidation, methyl ester, oxirane, palm oil
BIOETHANOL FROM PINEAPPLE PEEL WITH SACCHAROMYCES CEREVICEAE MASS AND FERMENTATION TIME VARIATION Nanik Astuti Rahman, Harimbi Setyawati,
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.v6i1.76

Abstract

As a waste from pineapple, pineapple peel still contains high carbohydrate and glucose.The aim of this study was to made bioethanol from pineapple peel with variation fromSaccharomyces cereviceae mass addition and fermentation time variation. The variablesused are Saccaromyces cereviceae mass 20, 30, 40 grams, fermentation pH 4 and 5,andthe length of fermentation time 2, 4, 6, 8, and 10 days. The analysis of the obtained resultsshowed: the initial glucose level of pineapple peel extract 8.5325%, the highest levels ofglucose from fermentation was 8.4275%, at the addition of 30 grams Saccaromyces cerevisiae,length of fermentation time was 2 days, and the highest levels of bioethanol was3.965%, it was acquired on the addition of 30 grams Saccaromyces cerevisiae and lengthof fermentation time 10 days. The conclusion of this study is the addition of Saccaromycescerevisiae and the length of fermentation time give a significant effect on the bioetanolproduced from pineapple peel extract.Key words: bioethanol, saccharomyces cereviceae, pineapple peel
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.

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