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INDONESIA
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI
Published by Universitas Diponegoro
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Engineering Industrial & Manufacturing Engineering
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI adalah jurnal yang diterbitkan oleh Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro untuk mempublikasikan karya ilmiah - karya ilmiah mahasiswa Program S1 Teknik Kimia Undip.
Arjuna Subject : -
Articles 77 Documents
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Search results for , issue "Volume 1, Nomor 1, Tahun 2012" : 77 Documents clear
PRODUKSI TRIACETIN DENGAN PROSES ESTERIFIKASI GLISEROL DAN ASAM ASETAT MENGGUNAKAN KATALIS ASAM SULFAT Ika Windrianto K. H; Hantoro Satriadi
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

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Abstract

Biodiesel is one alternative energy that is expected to replace diesel fuel. Glycerol is a by product of biodiesel production from transesterification reaction. Glycerol when esterified with acetic acid to form triacetin. Triacetin usability very much both for food and non food. For groceries, triacetin can be used as a fragrance ingredient in candy, beverages from milk, soft drinks and chewing gum. As for the non-food materials can be used for solvent triacetin on perfumes, printing ink, solvent in flavor, plasticizer for cellulose resin, polymer and co-polymers, it can even be used as fuel additives to reduce knocking in car engines. In this study will be obtained under optimum conditions of manufacture of triacetin. Glycerol and total volume of 600 ml acetic acid, stirring speed of 100 rpm and the catalyst was 5 wt% glycerol. In this study the process of qualitative analysis using FTIR instrument has detected the existence of triacetin product. Besides the quantitative analysis obtained under optimum conditions resulted in mole ratio of reagents 1:7 glycerol and acetic acid to a temperature of 1200C at 5 minutes with the conversion rate of 67.6323 %.
STUDI REAKTOR PLASMA DIELECTRIC BARRIER DISCHARGE (DBD) PLANAR TO PLANAR UNTUK PRE-TREATMENT KONVERSI LIMBAH PLASTIK POLIPROPILEN MENJADI BAHAN BAKAR CAIR Aniyati Khoiriyah; M.C.T. Wahyu Utami; I. Istadi
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

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Abstract

Polipropilen (PP) is a kind of plastic that is widely used in our life. Plastic wastes give big problems to environment because plastic wastes are not easily degraded by nature. Conventional method for plastic waste processing is thermal cracking and catalytic cracking. The conventional process needs high energy. Plasma technology combined with catalytic cracking process is expected to cover the problems of energy requirement. Distance between both electrodes (high voltage and ground) and high voltage magnitude in plasma reactor is important parameter in plasma reactor operation and type or design of plasma reactor. Optimum of both important parameters need to be studied in order to get optimal operating condition suitable for better productivity. DBD Planar to Planar plasma reactor can be used to pre-crack polipropilen's structure (in the pre-treatment's process) so that catalytic cracking process in fixed bed's reactor conventional that use RCC (Residual Catalytic Cracking) catalyst can be easier to take. On this plasma reactor, distance between both electrodes of 2,5 - 4 cm, and the high voltage of 3-7,5 kV are optimal operating conditions. Combination of the pre-treatment (distance between electrodes 3,3 cm and high voltage 5,3 kV) and  the conventional catalytic cracking process by using weight ratio of catalyst to plastic 2:1 and reactor temperature 500oC and reaction time 1 hour could produce liquid fuel yield of 36,27%.
PENGARUH COATING ALGINATE-CHITOSAN TERHADAP PERTUMBUHAN MIKROBA PADA BUAH MELON KUPASAN Heru Cahyana; Marcelinus Christwardana; Nur Rokhati
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

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Abstract

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.
PROSES PENGERINGAN JAMUR LINGZHI (GANODERMA LUCIDIUM) MENGGUNAKAN MEDIA UDARA YANG DIDEHUMIDIFKASI OLEH ZEOLIT ALAM M. Ikhwan Shofarudin; Tri Nugroho; M. Djaeni
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

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Abstract

Drying is process that establish the quality of Lingzhi mushrom and then it will influence the price of mushrom. Dryng process which did by farmer of lingshi mushrom use the light of sun which have some weakness, drying time reached 5 days, dependence on season, bigger space need to drying, and operational cost that reach 3 times more expensive in rainy season. The goals of this research are to dry lingzhi mushrom in tray dryer using natural zeolite to make drying process faster, to obtain the effect of operation condition to drying process, and to obtain the effect of operation condition to lingzhi mushrom quality. the condition operation in this research are air temperatures ( 40, 50, 60C), air velocity (6, 8, 10 m/s), and the use of natural zeolite. this research are done by drying lingzhi mushrom in tray dryer during 15 hours until the obtaine the certain moisture content. The result of this research are as follow: at air velocity 8 m/s Nc 400C = 0.0268, Nc 500C = 0.0295, Nc 600C = 0.0297. at temperature 600C obtained Nc at velocity 6 m/s, Nc = 0.0291, at velocity 8 m/s, Nc = 0.0297, and at velocity 10 m/s, Nc = 0.0315, whereas at air velocity 8 m/s with temperature 600C Non zeolite variable Nc = 0.0256, where using of zeolite, Nc = 0.0297. From these data, we can conclude that as the air temperature and air velocity increase, the drying rate will increase therefore drying process takes shorter time. Using of zeolite on drying process make it faster, The best quality of dry lingzhi mushrome with maximum moisture content 12-14% is obtained when using zeolite at air velocity 8 m/s, air temperature 600C also at air velocity 10 m/s at temperature 400C, 500C, and 600C.
PEMURNIAN BIOGAS DARI KANDUNGAN HIDROGEN SULFIDA (H2S) DENGAN NaOH, CuSO4, Fe2(SO4)3 DALAM PACKED COLUMN SECARA KONTINYU Kusuma Aditya; Pricilia Melisa; Agus Hadiyarto
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

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Abstract

Biogas is potential for use as a fuel because of high methane content. However, the content of hydrogen sulfide (H2S) in the biogas is very harmful because it can cause corrosive to the equipment and can pollute the environment. Therefore, it is necessary to purify the Biogas first before being used as fuel either by absorption method. Much research is done to reduce the H2S content in biogas physically, one with the membrane. However, membrane costly and so difficult to apply high-tech into society. Purification of biogas H2S content of the chemical absorption method gives various advantages. The advantage is high efficiency, fast reaction rates, and effectively used for low gas flow rate at normal conditions. Absorber used in this study were NaOH, CuSO4, dan Fe2(SO4)3 .Absorbent solution flowed into the packed column absorber, in contact with biogas flowing in counter current. The results indicate that the third absorbent NaOH, CuSO4, and Fe2 (SO4)3 can absorb H2S. It is known that chemical absorption is affected by the fluid flow rate and the ratio L / G. From this study it was found that increasing the flow rate of absorbent causing the growing number of H2S is absorbed as well by increasing the ratio L / G is the amount of H2S is absorbed more and more as well. Although all three absorber can absorb H2S, NaOH is more reactive than CuSO4, and Fe2 (SO4) 2.
MODIFIKASI TAPIOKA DENGAN KOMBINASI PROSES HIDROLISA ASAM LAKTAT DAN OKSIDASI HIDROGEN PEROKSIDA UNTUK MENINGKATKAN DAYA KEMBANG Desti Permata Sari; Devi Marietta Siregar; Siswo Sumardiono
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

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Abstract

Indonesia is one of the largest wheat importer. Wheat is consumed by most of Indonesian. Nowadays, the government is trying to find alternative material to substitute wheat with local material named cassava. Cassava is chosen because it has good potential to be developed in Indonesia. Native starch requires long time in reacting and cooking. Hence, the native starch with high purity can be readily modified by physical, chemical and enzyme process to many diversified products to improve the starch functionality and, consequently, encourage more industrial application. On this research, cassava starch modification is produced by combination lactic acid hydrolysis and oxidation using hydrogen peroxide. The results of this research are expected to be a food innovation in small and medium industries.The conclusion that we get is combination lactic acid hydrolysis and oxidation using hydrogen peroxide can increase the expansion of starch. The highest values for the sum of carbonyl dan carboxyl occured at pH 5, hydrogen peroxide concentration 2 %, temperature 40oC, and baking expansion 3,03 cm3/gr. The condition of oxidation that presented the carbonyl and carboxyl content of starch similar to the sun-dried cassava starch. The oxidation with H2O2 provides after hydrolisis cassava starch and produces more homogenous product.  Optimal composition of the use of tapioca starch modification bread is 25% of modified tapioca and 75% of wheat flour which has baking expansion 3,03 cm3/gr.
EVALUASI PERTUMBUHAN MIKROALGA DALAM MEDIUM POME: VARIASI JENIS MIKROALGA, MEDIUM DAN WAKTU PENAMBAHAN NUTRIENT Muhammad Zaini Mahdi; Yasinta Nikita Titisari; H Hadiyanto
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

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Abstract

POME is a liquid waste produced by crude palm oil industry. POME has not been processed optimally and therefore it is problem for environment due to high level of COD and BOD. Algae is known as bioabsorbent which can neutralize pollutants components in the liquid waste. For its growth, microalgae needs nutrients containing carbon, nitrogen, and phosphor. These nutrients are required for photosynthetic to convert carbon source into biomass. POME contains large amount of C, N, P and therefore this research is aimed to study the potential of POME as medium growth of algae Spirulina, Nannochloropsis, and Chlorella. The experiment was done by performing variation of nutrients, type of water, and time of nutrient feeding. The nutrients were urea and sodium bicarbonate. The steps of experiment were preparing the medium, cultivating the microalgae, observing biomass, counting the algae cells, and making calibration curve. The results showed that the best medium for microalgae is POME, Spirulina could grow better in the POME medium than Chlorella and Nannochloropsis, and nutrients added every 2 days was better than adding nutrients in the beginning and without addition of nutrients.

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