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<![CDATA[KINETIKA REAKSI HIDROLISA LMWCS (LOW MOLECULAR WEIGHT CHITOSAN) MENGGUNAKAN ASAM KLORIDA ]]>
<![CDATA[Indrawati Dwi Paramita]]>;
<![CDATA[Ressa Puspita Dewi]]>;
<![CDATA[Aji Prasetyaningrum]]>
<![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[Chitosan is a natural carbohydrate biopolymer derived from crustacea exoskeleton animals which have important benefits in the health field. Quality and utilization of chitosan depends on the molecular weight and degree of deacetilation. The purpose of this research was to determine the effect of temperature and time on the rate of depolymerization of chitosan from high to low molecular weight, as well as experimental data applied to the modeling of reaction kinetics of hydrolysis of variation LMWCs (Low Molecular Weight Chitosan) desired (+20 kDa). Chitosan hydrolysis process carried out with distilled water to be included in the reactor equipped with stirrer, then heated until it reaches a certain temperature. Once the desired temperature is reached, the chitosan powder introduced into the reactor and followed by the introduction of the catalyst. Hydrolysis process carried out during a certain time (corresponding variable) with stirring and the temperature is kept constant (as variables). After the hydrolysis process is over, done by adding a solution of NaOH neutralization. The solid obtained was then filtered, washed with water and dried. The higher the temperature of hydrolysis, the hydrolysis will take place more rapidly with stirring and the use of a strong acid with a high concentration. The longer of the hydrolysis time (15-120 min) led to a decline in the value of molecular weight (MW) are obtained. Iteration of the experimental data, obtained the value of k1 = 3.145x10-6 and k2 =1.84x10-6.The value of k1 and k2 are used to make the modeling of the kinetics of the hydrolysis reaction LMWCs desired variation, so it can be determined the estimated time required to process the hydrolysis of chitosan.]]>
<![CDATA[PROSES KULTIVASI Spirulina platensis MENGGUNAKAN POME (Palm Oil Mill Effluent) SEBAGAI MEDIA KULTUR DALAM RACEWAY OPEN POND BIOREACTOR ]]>
<![CDATA[Elisa Mutiah]]>;
<![CDATA[Erlinda Khoirunisa]]>;
<![CDATA[A Abdullah]]>
<![CDATA[ JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 2, Nomor 2, Tahun 2013 ]]>
Publisher : <![CDATA[Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro, ]]>
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<![CDATA[Penelitian dilakukan dengan mengkultivasi Spirulina platensis pada media POME menggunakan raceway open pond bioreactor selama 5 hari. Penelitian dengan variabel konsentrasi POME (pengenceran 3×, 4×, 5×) dan kepadatan umpan Spirulina platensis (0.443 g/L; 0.618 g/L; 0.952 g/L) ini, bertujuan untuk mempelajari pengaruh variabel tersebut terhadap pertumbuhan Spirulina platensis dan mengetahui perpaduan yang paling baik untuk kedua variabel yang dipelajari. Respon yang diambil adalah biomassa kering dari Spirulina platensis. Hasil penelitian memperlihatkan bahwa untuk konsentrasi POME dengan pengenceran 5× memberikan biomassa kering Spirulina platensis paling baik yaitu mencapai 0.7592 g/L. Sedangkan pada kepadatan umpan Spirulina platensis yang memberikan biomassa kering paling baik mencapai 0.9932 g/L adalah kepadatan umpan 0.443 g/L. Oleh karena itu, dapat disimpulkan bahwa untuk mendapatkan biomassa paling baik dari Spirulina platensis, digunakan konsentrasi POME dengan pengenceran 5× menggunakan umpan Spirulina platensis pada kepadatan 0.443 g/L. Dari penelitian ini, diharapkan dilakukan penelitian lanjutan untuk waktu kultivasi yang lebih lama sehingga dapat menjadi kontribusi bagi upaya budidaya Spirulina plantesis untuk dimanfaatkan dalam bahan makanan, pakan, kecantikan, dan kesehatan.]]>
<![CDATA[PENGARUH KONSENTRASI SERTA PENAMBAHAN GLISEROL TERHADAP KARAKTERISTIK FILM ALGINAT DAN KITOSAN ]]>
<![CDATA[Giovanni Anward]]>;
<![CDATA[Yusuf Hidayat]]>;
<![CDATA[Nur Rokhati]]>
<![CDATA[ JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 2, Nomor 3, Tahun 2013 ]]>
Publisher : <![CDATA[Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro, ]]>
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<![CDATA[Bioethanol used as fuel should have purity greater than 99.5%, but the conventional distillation produces only 95% purity. One way to increase the purity of ethanol is pervaporation method using selective membrane. The aim of this research is to prepare and characterize alginate and chitosan films. To determine the optimum concentration of alginate and chitosan films, both of these films were characterized. The results showed that the optimum alginate film obtained at 3% of concentration with the addition of 20% glycerol, while the optimum chitosan film obtained at 3% of concentration without the addition of glycerol. Alginate film has the highest permeability and swelling degree, while chitosan film has the lowest value. Alginate and chitosan films have the highest swelling degree in water, then 95% alcohol and the lowest is in PA alcohol.]]>
<![CDATA[PEMBUATAN DAN KARAKTERISASI SUPPORT LAYER UNTUK MEMBRAN PERVAPORASI ]]>
<![CDATA[Ariestya Meta Devi]]>;
<![CDATA[Lulluil Mahsunnah]]>;
<![CDATA[Heru Susanto]]>
<![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 selection of the membrane has an important role in the process of pervaporation membranes based on the advantages and disadvantages for use in the separation process.. In the separation process of water with low concentration and need a specific condition, anorganic membrane is suitable. The purpose of this research is to find the optimal composition of support for the preparation of zeolite membranes.The result of the research shown the support membrane with composition alumina : kaolin 56%wt : 34%wt has a highest strength 46,65 N/mm2 and 30,24 N/mm2 if it compare with composition of alumina : kaolin 45%wt : 45%wt and 34%wt : 56%wt. And then the support layer is depositioned by zeolite. As an identification result from XRD, it shown mullite as dominant phase that formed with crystal size range 3,16 – 7,25 nm. Based on the analysis results obtained using the SEM support surface which has been deposited into closer, but the zeolite crystals have not formed a bond that forms between each zeolite.]]>
<![CDATA[BIOFIKSASI CO2 OLEH MIKROALGA Spirulina sp DALAM UPAYA PEMURNIAN BIOGAS ]]>
<![CDATA[Fegi Yuliandri]]>;
<![CDATA[Yudha Duta Utama]]>;
<![CDATA[Luqman Buchori]]>
<![CDATA[ JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 2, Nomor 4, Tahun 2013 ]]>
Publisher : <![CDATA[Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro, ]]>
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<![CDATA[The main component of biogas CH4,it is a renewable energy product that is expected to be the fuel gas. However, the presence of CO2 in the biogas decrease it’s heating value. The Purification of biogas is a solution to increase the heating value. One of eco-friendly way to purify biogas eco-friendly is by using microalgae Spirulina sp which has the CO2 Biofixation ability. This research intends to Determine the most effective flow rate of tubular type photobioreactor by using microalgae spirulina in absorbing CO2 and determine the optimum concentration of CO2 that can be absorbed by the microalgae Spirulina sp. This research is using flow rate of gas mixture (30% CO2 gas composition V: air 70% V) 0.2 L / sec, 0.5 L / sec, 1 L / sec, and 1.5 L / sec. And using composition of the feed gas (flow rate of 0.5 L / min) was 25% V CO2, 75% air V; CO2 30% V; air 70% V; V 35% CO2, 65% air V; CO2 40 % V, 60% air. The results obtained that the optimum flow rate for CO2 absroption is the flowrate 0.5 L / min with a feed gas composition CO2: air (30:70). Highest CO2 absorption amounted to 0.47%, and it doesnt reach the desired target of purification. So it needs to re-design the research’s tools to increase the amount of CO2 absorbed.]]>
<![CDATA[PENGOLAHAN AIR LIMBAH RUMAH TANGGA SECARA BIOLOGIS DENGAN MEDIA LUMPUR AKTIF Suatu Usaha Pemanfaatan Kembali Air Limbah Rumah Tangga Untuk Kebutuhan Mandi Dan Cuci ]]>
<![CDATA[Deissy L Nusanthary]]>;
<![CDATA[Elliza Rosida Colby]]>;
<![CDATA[Herry Santosa]]>
<![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[Liquid wastes water, the former can be processed into water that can be used again in accordance with needed. Research carried out using a biologically active sludge media. The experiment is done through two stages (1) the characterization of waste water (2) wastewater treatment. Characterization of wastewater is meant to find out the characteristics of the waste water based on pH and clarity level. Stages of wastewater treatment is performed in four aerator box, each with comparative weight of active sludge per unit volume (MLSS 1000, 2000, 3000 MLSS MLSS and MLSS 4000 mg/litre). On each end of the experiment conducted test pured, pH, water softening, and surfactants of kehari for seven days. From the results of the experiment retrieved data (1) the waste Water need further processing to put back as water bath and laundry (2) Review of test parameters pH, clarity, and water softening. processing for 6 days will provide product water processed relatively better on the use of MLSS 1000mg/l (3) of the day to day, during the process of decreasing the levels of processing takes place even though it has not yet reached the levels of surfactants are surfactants are equal to zero, according to SK menkes RI in 2002.]]>
<![CDATA[STUDI EKSPERIMENTAL ALAT PENGERINGAN GABAH SISTEM RESIRKULASI KONTINYU TIPE KONVEYOR PNEUMATIK ]]>
<![CDATA[Listiyana Riska]]>;
<![CDATA[Rahim Arlanta S]]>;
<![CDATA[Siswo Sumardiono]]>
<![CDATA[ JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 2, Nomor 2, Tahun 2013 ]]>
Publisher : <![CDATA[Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro, ]]>
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<![CDATA[Drying paddy by using conventional method is irrelevant to used nowadays. The need of grain increasing each year is one of the main factor that pushes scientist to invent new methods of drying paddy grain. The old method is unusefull since it takes up space, needed the sun as the drying media which causes a long drying time. One of the alternative of drying paddy grain is by using mechanic dryer. By using this type of dryer, the process of drying takes faster comparing to the old method and the distribution of grain is supplied continuously. The dryer which uses pneumatic conveyor can be one of the solution due to its less energy consumption, a better drying result and high drying capacity. The variable used to identify drying performance is temperature and loading weight. From the experiment, it is resulted that the best temperature for drying paddy grain is 60 C with the weight loading of 150 gram.]]>
<![CDATA[EKSTRAKSI GLUKOMANNAN DARI TANAMAN ILES-ILES (Amorphophallus oncophillus) DENGAN PELARUT AIR DAN PENJERNIH KARBON AKTIF ]]>
<![CDATA[Irene Nindita P]]>;
<![CDATA[Noor Amalia]]>;
<![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[Iles-iles (Amorphophallus oncophyllus) is a type of plant that is very potential to be developed in terms of medical, industrial and food. ). Iles-iles contains high glucomannan, namely 45-65% (Arifin, 2001).. The purpose of this study is to determine the variables influencing the extraction process iles-iles becomes glucomannan, obtain optimum conditions and to search the influence of activated carbon. In this research there are two steps experiment, which is extraction and analyzed glucomannan content. This research uses two levels design factorial method with three variables. Fixed variables used 35 grams of iles-iles flour. Free variables used solvent with low level (-) 400 ml and upper level (+) 800 ml, temperature with low level (-) 35°C and upper level (+) 50°C, and the weight of activated carbon with low level (-) 1,25 gr and upper level (+) 1,8 gr. In the experimental results can be seen that the most influental variable is the solvent. The less the amount of solvent, the more content glucomannan obtained. The result of glucomannan extraction after given the addition of activated carbon obtained colors more clearly. Iles-Iles optimum processing conditions to be glucomannan is the 300 ml solvent with the temperature is 35OC and the weight of activated carbon is 1,25 gram.]]>
<![CDATA[PENGGUNAAN ZEOLITE SINTETIS DALAM PENGERINGAN GABAH DENGAN PROSES FLUIDISASI INDIRECT CONTACT ]]>
<![CDATA[Affian Widjanarko]]>;
<![CDATA[R. Ridwan]]>;
<![CDATA[M. Djaeni]]>;
<![CDATA[R. Ratnawati]]>
<![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[Drying grain commonly used in Indonesia is drying by using sunlight. Drying is still constrained by the type of season. The research objective to accelerate the use of zeolite grain drying process, determine the relationship inlet air temperature dryer drying rate, and determine the relationship of the inlet air flow rate of air at the rate of drying. The operating conditions in this experiment is the drying air temperature ((30oC; 40oC; 50oC and 60oC), drying air flow rate (1 m / s; 1.5 m / s, 2 m / s and 2.5 m / s) and zeolite 1 kg. The research was carried out by flowing dry air at specific operating conditions and then brought into contact with the grain in the fluidized bed to obtain the water content of 12-14%. The results obtained indicate the temperature of 30oC, Nc = 0.0082, while the temperature of 60oC, Nc = 0.0138. In the air flow rate of 1 m / s, Nc = 0.0094 while the air flow rate of 2.5 m / s, Nc = 0.0118. From this data it can be concluded that the higher the temperature and the rate of air dryer, the drying rate wil be faster.]]>
<![CDATA[PENYISIHAN KEKERUHAN PADA SISTEM PENGOLAHAN AIR SUNGAI TEMBALANG DENGAN TEKNOLOGI RAPID SAND FILTER ]]>
<![CDATA[Catur Pamularsih]]>;
<![CDATA[Dera Choanji]]>;
<![CDATA[I Nyoman Widiasa]]>
<![CDATA[ JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 2, Nomor 4, Tahun 2013 ]]>
Publisher : <![CDATA[Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro, ]]>
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<![CDATA[Design of rapid sand filters differ from one place to another because it has the distinction of influent. Therefore in order to obtain the optimal, effective and efficient design for water treatment tembalang river so that the effluent can be used around the community. The purpose of this study is to get a pattern of rapid sand filter operation with water from Tembalang river. Variables used in this study is the loading rate (10, 11, 12 gpm/ft2), high media filter (60 and 100 cm), and the addition of coagulant. The result of study showed 85% reduction of turbidity by using a loading rate of 10.2 gpm/ft2 at height of 100 cm filter media. At loading rate 11.75 gpm/ft2 removal turbidity by using a coagulant will be more effective when compared to not using coagulants.]]>
