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<![CDATA[PEMBUATAN BAHAN BAKAR CAIR DARI TREMBOSO (SISA SADAPAN LATEKS) MENGGUNAKAN KATALIS ZEOLIT MODERNITE ]]>
<![CDATA[Dian Cahyaningrum]]>;
<![CDATA[Nerfiana Fradevi]]>;
<![CDATA[Didi Dwi Anggoro]]>
<![CDATA[ JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012 ]]>
Publisher : <![CDATA[Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro, ]]>
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<![CDATA[Modernite very well used as an acid catalyst for the cracking process, to get a good acid levels can be modified catalyst by dealumination process. Dealumination will provide a ratio of Si / Al higher which can provide the catalyst selectivity and activity of catalysts are higher and more stable than modernite the ratio of Si / Al 20. In this study, using raw materials such as used cooking oil and zeolite catalysts modernite types. In an influential study variable, didapaatkan equations for liquid products is Y = -120.858 + 4.869 + 1.473 X1 + X2 + X3 59.183 0.043 X1X2 - X1X3 0.733 - 0.320 X2X3 - X1 0.324 2 to 0.008 X22 - X32 6.075. As for the product gas mathematical equation is Y = 122.3022 + 1.5447 X1 - 0.8713 X2 + X3 + 55.8804 0.0357 X1X2 - 0.8281 X1X3 - X2X3 0.0547 - 0.0643 X12 + 0, 10.7038 + 0076 X22 X32, the Y is the yield resulting product, X1 is a dealumination, X2 is the operating temperature, and X3 is the concentration. Optimal conditions maximizing the type contained in the concentration versus time relationship, with a time of 8 hours and a concentration dealumination 3 N for liquid products, while for the product gas at 8 hours with an operating temperature of 50 ° C.]]>
<![CDATA[SINTESA KATALIS SUPER ASAM SO42-/ ZnO UNTUK PRODUKSI BIODIESEL DARI MINYAK KELAPA SAWIT ]]>
<![CDATA[Inshani Utami]]>;
<![CDATA[Roikhatus Solikhah]]>;
<![CDATA[I. Istadi]]>
<![CDATA[ JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012 ]]>
Publisher : <![CDATA[Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro, ]]>
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<![CDATA[The issue of energy is a global issue that must be discussed by all countries in the world. Rising oil prices and a dwindling supply push every country to develop new renewable energy alternatives. One of this alternative energy is biodiesel. The biodiesel production can be done by using vegetable oil as the raw material over supported homogeneous catalyst, heterogeneous catalyst and enzymatic catalyst. In this study the use of palm oil as the main material to be reacted with methanol and the catalyst used as heterogeneous catalysts SO42-/ZnO by changing variables used are long reaction times (1, 2.5 and 4 hours) and the weight ratio of catalyst / oil (4 , 6, and 8).The studybeganwith thepreparation of catalyst SO42-/ZnO followed by aransesterification reaction between palm oil with methanol. The resultsofthis studyshowed that the super acid catalyst SO42-/ZnOcan be usedin making biodiesel.Optimum operatingcondition for this catalytic reaction is the weight ratio of catalyst/oil 3,8 during 2,5 hours with 78% yield of the resulting ester metal.Longer time ofthe transesterificationreaction, the higher the % yield ofthe resulting ester metal, while adding more catalyst produced the lower theyield.]]>
<![CDATA[PENGARUH SUHU DAN LAJU ALIR UDARA PENGERING PADA PENGERINGAN KARAGINAN MENGGUNAKAN TEKNOLOGI SPRAY DRYER ]]>
<![CDATA[Ruben Tinosa Dwika]]>;
<![CDATA[Trisna Ceningsih]]>;
<![CDATA[Setia Budi Sasongko]]>
<![CDATA[ JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012 ]]>
Publisher : <![CDATA[Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro, ]]>
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<![CDATA[Carrageenan, as one of the treatment of seaweed, is very important role in food and beverage industry, pharmaceuticals, and others. The low quality of carrageenan in the state due to the less accurate drying system which is used as the final materials handling unit (finishing product). The method of spray dryer is drying the liquid by contacting the liquid droplets in the opposite direction or the direction of hot air. Humidity can be reduced by passing the air in the adsorbent column that will absorb moisture in it before entering the furnace room. Carrageenan with a spray drying process using zeolite as an absorbent of moisture is an alternative option to achieve an effective hot air. Variable used in this research was the temperature change of air for drying (70°C, 80oC, 90oC, 100oC) and a flow rate of air dryers (11 m / sec, 12 m / sec, 13 m / sec, 14 m / sec). The results showed that water content carrageenan products affected by temperature and air velocity dryer into the column. Carrageenan results with the lowest water content of 11.19% is achieved on the process conditions with a temperature of 100oC column with drying air velocity 14 m / sec. In addition, the heat transfer process (based on temperature) is more affected than the mass transfer processes of momentum transfer (based on drying air flow rate). As well, the efficiency of the drying process the product increases with increasing drying temperature and air velocity. The efficiency of the drying process the product for 83.33% carrageenan obtained at 100oC temperature conditions and the drying air velocity 14 m/sec.]]>
<![CDATA[PENGARUH JENIS AGEN PENGENDAP ALAMI TERHADAP KARAKTERISTIK TAHU ]]>
<![CDATA[Amelia Maharani]]>;
<![CDATA[Dessy Kurniawati]]>;
<![CDATA[Nita Aryanti]]>
<![CDATA[ JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012 ]]>
Publisher : <![CDATA[Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro, ]]>
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<![CDATA[Tofu is a popular soy processed food in Indonesia. The tofu made processing has done by the making ofusing sintetic coagulants. But general coagulant has some lacts which can influence the quality of tofu.Meanwhile the selection of natiral components as natural coagulant of tofu in Indonesia production itselfhave not been used. That is way in this research, the making of tofu will be done by using averrhoabilumbi, citrus acid, and chitosan as natural coagulants. It surrounds some steps that is coagulantspreparation, measurement of acidity of coagulants, preparation of soymilk, until preparation of tofu. Theproximate analysis of tofu is yield of tofu analysis, crude protein analysis and moisture content analysis.This research show that the use of comersiil coagulants (CaSO4) results lower yield than naturalcoagulants. The effects of additon of natural coagulants in making process of tofu, which naturalcoagulants each other has positive effects and negative effects itself, but generally the use of naturalcoagulants has positive effects than comersiil coagulants CaSO4. In next research it will be better to doanalysis of parameter of tofu texture besides hardness, they are cohessiveness, springiness, andchewiness to get more complete discussion. It need too add the other variable in knowing the effects ofthe quality of tofu like pH, temperature, mixing speed, coagulation time and many more.]]>
<![CDATA[KAJIAN PERTUMBUHAN LACTOBACILLUS CASEI PADA SUBSTRAT PORANG (AMORPHOPALLUS ONCOPHILLUS) ]]>
<![CDATA[Farisa Sirtika Ramadhan]]>;
<![CDATA[Hanifah Rahim]]>;
<![CDATA[Dyah Hesti Wardhani]]>
<![CDATA[ JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012 ]]>
Publisher : <![CDATA[Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro, ]]>
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<![CDATA[Nowadays, probiotic products which can be found in market are milk and cereal based products. Porang or iles-iles (Amorphophallus onchophillus) is one of roots which grow commonly wildly in Indonesia. Porang contains high of glucomannan concentration, aproximatelly 41.137%. This research is aimed to study the ability of probiotic bacteria named Lactobacillus casei to grow in various concentration of porang flour( 0,5%w; 1%w and 5%w) and fermentations time and The effect of milk on the growth of probioticbacteria also studied. The results shows that pH of suspension decreased in the line with fermentation time, and porang concentration. And the addition of milk does not affect pH of the suspension. Bacteria concentration increased with the lenght of fermentation time and the high concentration of starch. Meanwhile, glucose level declined along with the lenght of fermentation time and the amount of porang suspense. The increase of suspension density is proportional to the fermentation time and concentration of porang. The effect of milk supplement did not show any different in all cases.This research concluded that bacteria Lactobacillus casei could grow in porang suspense. In the future it’s needed to study the optimum condition for bacteria Lactobacillus casei grow in porang suspense.]]>
<![CDATA[OPTIMASI PROSES EKSTRAKSI GINGEROL DARI RIMPANG JAHE SEGAR MENGGUNAKAN PELARUT n-HEXANE SECARA BATCH ]]>
<![CDATA[Fitra Pradhita]]>;
<![CDATA[Margaretha Praba Aulia]]>;
<![CDATA[H Hargono]]>
<![CDATA[ JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012 ]]>
Publisher : <![CDATA[Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro, ]]>
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<![CDATA[Ginger contains gingerol which is very useful in the industry. Gingerol can be used in the crosslinking of starch to crosslinking the carbon chains in the starch. Gingerol on the market are still rare, expensive and of poor quality, so it needs to be studied gingerol extraction method to efficiently generate high-quality gingerol. This study aims to determine the most influential variables between solvent feed ratio, particle size ginger, temperature and look for the optimum operating conditions on the extraction of gingerol from fresh ginger rhizome. This study is planned by the method of factorial design two levels and three independent variables are: temperature (50 and 60 °C), particle size (10x10x1 mm and 5x5x1 mm), solvent feed ratio (1:6 and 1:4 g / ml solvent) . Dependent variable used is the volume of n-hexane 300 ml technical, stirring speed of 450 rpm and extraction time 1hr with sampling every 10 minutes. 3 variables show a positive influence / improve gingerol obtained and solvent feed ratio is the most influential. Optimum conditions in the extraction process is at a temperature of 60 ° C gingerol, 5x5x1 mm particle size, and solvent feed ratio of 1:4 g / ml solvent.]]>
<![CDATA[PENGOLAHAN LIMBAH POME (PALM OIL MILL EFFLUENT) DENGAN MENGGUNAKAN MIKROALGA ]]>
<![CDATA[Riky Yonas]]>;
<![CDATA[Uray Irzandi]]>;
<![CDATA[Hantoro Satriadi]]>
<![CDATA[ JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012 ]]>
Publisher : <![CDATA[Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro, ]]>
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<![CDATA[Along with increased produktivity of palm it will be followed increase in wastegenerated. Each palm mill wasted liquid waste known as palm oil mill effluent (POME). POME contains BOD and COD are very high, so it can inhibit the growth of microalgae in the POME. Therefore, comprehensive research is needed to find out a pretreatment step in lowering the content of BOD and COD in POME before being used as a medium for the growth and development of microalgae. Research POME waste water as a medium of growth and development of microalgae is specifically aimed at studying the treatment process of POME using wild microalgae. The procedure of mixing experiments conducted POME and microalgae erlemeyer fitinto the specified ratio. Research shows that pond IV POME waste can be used as growth wild mikrolga, so it can reduce the levels of BOD and COD of POME waste. Modifiers of variable are applied volume of POME ratio of the volume of microalgae and the amount of nutrients provided. Growth of microalgae with a ratio of 1:4 resulting in a reduction of BOD and COD at both the 61.66 ppm and 173.33 ppm from 110.6 ppm and 496.67 ppm. On the effect of nutrient giving C 120 ppm resulted in lower BOD and COD at the 65.33 ppm and 186.67 ppm, where as the effect giving nutrient N 40 resulted lower and COD reached 55.41 ppm and 158.33 ppm.]]>
<![CDATA[PENGARUH COATING ALGINATE-CHITOSAN TERHADAP PERTUMBUHAN MIKROBA PADA BUAH MELON KUPASAN ]]>
<![CDATA[Heru Cahyana]]>;
<![CDATA[Marcelinus Christwardana]]>;
<![CDATA[Nur Rokhati]]>
<![CDATA[ JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012 ]]>
Publisher : <![CDATA[Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro, ]]>
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<![CDATA[Lack of peeling fruit processing now cause the rapid spoilage the fruit. Therefore, most of the industry slows microbial growth by using a coating on the fruit. In this study making edible films made from alginate and chitosan. Edible film also applied to peeling melon and tested the microbial growth during 3 days. The result showed melon which coating with chitosan film is very good because this film can hold up during 2 days with growth of microbe to 21,6 x 105 CFU/gr.]]>
<![CDATA[PRODUKSI BIOGAS DARI ECENG GONDOK (EICCHORNIA CRASSIPES) : KAJIAN KONSISTENSI DAN pH TERHADAP BIOGAS DIHASILKAN ]]>
<![CDATA[Arnold Yonathan]]>;
<![CDATA[Avianda Rusba Prasetya]]>;
<![CDATA[Bambang Pramudono]]>
<![CDATA[ JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012 ]]>
Publisher : <![CDATA[Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro, ]]>
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<![CDATA[Water hyacinth (Eicchornia crassipes) is one of the weeds type which has the fastest growth amongothers, but it can be used in the biogas production because it contains large number ofhemiselulosa. Anaerobic digestion is a process where the microorganism is doing a biodegradablematerial split within the oxygen devoid. The biogas making process begins at cutting up the waterhyacinth, to be added with the water and to be blended with cow dung later. When the mixedsolution is already well-suited with the operation variable, pour it into the pre-treatmentbiodigester by adding the H2SO4 into the (substrat). The process will present the result atcomposition variable, which is showing the largest biogas production at 2:2,5 composition in1.162,97mL, and the smallest biogas production at 2:1 composition in 12,85mL. The bestcomposition from the fermentation process has done before is used as the dependent variable witha pH variable change. The result shows at the pH interval 4 -7, the biogas production isincreasing, and will decrease at the pH 8. The largest biogas production is at the variable pH 7 inthe amount of 1.162,97mL. The GC analysis result shows the metana that contains inside thebiogas is 0,03mol/100gr water hyacinth.]]>
<![CDATA[PEMBUATAN BIOGAS DARI SAMPAH SAYURAN ]]>
<![CDATA[Andreas Felix S.]]>;
<![CDATA[Paramitha S.B.U.]]>;
<![CDATA[Diyono Ikhsan]]>
<![CDATA[ JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012 ]]>
Publisher : <![CDATA[Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro, ]]>
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<![CDATA[Vegetable waste is produced in a huge volume everyday. The sources of this waste are traditional market, where the waste is usually unusefull or just taken by people for feeding cows. It is actually an organic waste that can be used to make biogas. The reactions of biogas reforming are included by three steps, hydrolysis reaction, acidic reaction and methanogenic reaction. At this research we use cow manure as a mixing and as starter for methanobacteria.The intention of this research are to make biogas using vegetable waste from traditional market in batch system, to know the concentration and composition of vegetable waste, water and cow manure in slurry, and also to know the heating value and volume of biogas. Tools that used are plastic tank and simple type of floating drum biodigester with manometer that is operated in room temperature, atmospheric pressure. The dependence variables are concentration of slurry within 6-10 % (dry basic weight per volume slurry) and composition 1 : 0, 1 : 0,5 and 1 : 1 weight comparison of vegetable waste with cow manure. The data of biogas volume and heating value will be observed everyday until the production of biogas stops.Biogas is produced since the first day of digestion until 35 days. The accumulation of biogas volume is reached the highest amount in 9 % of concentration and 1 : 0,5 of composition. The analysis of heating value is being measured based on the highest volume from the best consentration and composition. Biogas can be burned on the 7th day until 30th. The highest heating value of it is about 10081 Joule/day on the 18th day. This is happen during the periode of regeneration time of methanogenic bacteria which converts the acetic acid into methane.]]>
