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INDONESIA
Seminar Nasional Teknik Kimia Kejuangan
Published by Universitas Pembangunan Nasional Veteran Yogyakarta
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Social, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Engineering Environmental Science
Prosiding Seminar Nasional Teknik Kimia Kejuangan adalah media online dari makalah yang telah diseminarkan pada acara Seminar Nasional Teknik Kimia “Kejuangan” (SNTKK). SNTKK merupakan agenda tahunan yang diselenggarakan oleh Program Studi Teknik Kimia FTI UPN ”Veteran” Yogyakarta. Seminar ini merupakan sarana komunikasi bagi para peneliti dari perguruan tinggi, institusi pendidikan, serta lembaga penelitian maupun industri, dalam mengembangkan teknologi kimia untuk pengolahan sumber daya alam Indonesia.
Arjuna Subject : -
Articles 588 Documents
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Pembuatan Arang Aktif dari Serbuk Kayu Meranti Merah dengan Aktivator H 3 PO 4 firman firman; Wahyudi Wahyudi; Ayu Ningrum; MUhammad Taufik
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Red meranti wood dust is one of the wastes generated from the plywood industry. Red meranti wood dust contains 55.2% cellulose. The cellulose content can be converted to carbon through carbonization process. To increase the absorption capacity, the carbon is activated chemically and physically into active carbon. Active carbon can be used as an absorbent and purifying agent in the chemical industries, food or beverage, pharmaceutical, and as a catalyst. This study aims to find out the effect of the H3PO4 concentration in producing active carbon. The carbonization is done using pyrolysis proess at a temperature of 500C for 2 hours. The the carbon is chemically activated using H3PO4 activator with concentration variation of 1.5%, 3%, 4.5%, 6%, and 7.5% for 24 hours, and physically activated in the furnace at a temperature of 900 C 1 hour. The best result is in the 1.5% H3PO4 concentration, with1,9558% water content, 2.3140% ash content, 5.0900% volatile matter content, and 820.99 mg/g iodine absorption.
Strategi Pengendalian Persediaan Gas Acetylene pada Industri Migas (Studi Kasus pada PetroChina International Jabung Ltd.) Nur Indrianti; Fajar Maulana Wijayanto
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Various materials and devices are needed to support production activities in the oil and gas industry. Therefore, optimal inventory strategy is required to satisfy the demand of the materials and devices with minimum inventory costs. This study deals with the evaluation of the inventory strategy of a private oil and gas company. As the object of the study, we considered acetylene inventory which is currently not managed properly. The strategy for acetylene inventory that has hitherto been implemented by the company is lot for lot ordering system in each period. In this study we applied Periodic Order Quantity, Wagner Whitin, and Silver Meal methods as alternative strategies for acetylene inventory control. The result of the study indicates that the Silver Meal method obtains optimal inventory schedule. It results in the lowest inventory costs compared to the other proposed methods and the current company’s strategy.
Penggunaan Radiasi Gelombang Mikro dalam Sintesis Karbon Aktif dari Serbuk Kayu Randu dan Aplikasinya untuk Menjerap Methyl Violet Widi Astuti; Luluk Siti Zulaechah; Stefanus Lian Kristian; Dinda Tri Novira
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Randu based activated carbons were prepared using chemical activation by potassium hydroxide (KOH) and applied as a potential adsorbent for the adsorption of methyl violet dye in aqueous solution. The technique of heating during activation can affect the physical and chemical characteristics of activated carbon structure. Conventional and microwave heating techniques represent two different types of activation methods. In conventional heating, there is a thermal gradient from the hot surface of the adsorbent to its interior until steady state conditions are reached. To avoid the thermal gradient, the microwave heating technique was used. Scanning electron microscope (SEM), Fourier-transform infrared spectroscopy (FTIR) and N2 adsorption-desorption isotherm were used to study the morphology of adsorbent surface, surface chemical property and specific surface area-pore size distribution, respectively. Batch experiments were carried out to investigate the effect of pH, contact time and methyl violet concentration on sorption efficiency. The result shows that effective pH for methyl violet removal was 9. A greater amount of dye was removed with an increase in the initial concentration of dye and quasi-equilibrium reached in 180 min. The adsorption capacity of methyl violet dye by randu based activated carbon was 531.16 mg g-1.
Perbandingan Granular Starch Hydrolyzing Enzyme dengan Glukoamilase Pada Proses Sakarifikasi Konvensional Pati Casava untuk Memproduksi Etanol Hargono .; Andri Cahyo Kumoro; Bakti Jos
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

In a conventional cassava starch is converted into dextrins using liquefaction enzymes at high temperatures(90–120°C) during a liquefaction step. Dextrins are hydrolyzed into sugars using saccharification enzymesduring a simultaneous saccharification and fermentation (SSF) step. Recently, a granular starch hydrolyzingenzyme (GSHE), Stargen 002, was developed that converts starch into dextrins at low temperatures (30°C) andhydrolyzes dextrins into sugars during SSF. In this study, cassava starch using GSHE enzyme was comparedwith glucoamylase of commercial saccharification enzyme. Cassava starch processes for GSHE andglucoamylase treatments were performed at the same process conditions except for the saccharification step(60°C). For GSHE and glucoamylase treatments, ethanol concentrations at 72 hr of fermentation were 12.3,12.8% (v/v), respectively. Sugar profiles for the GSHE treatment were different from glucoamylase treatments,especially for reducing sugar. During SSF, the highest reducing sugar concentration for GSHE treatment was8% (w/v), whereas for glucoamylase treatments, reducing sugar concentrations had maximum of 15% (w/v).
PENGARUH EMULSIFIER TERHADAP STABILITAS EMULSI SALAD DRESSING BERBAHAN MINYAK JAGUNG Ery Fatarina; Rudi Firyanto; Sri Mulyaningsih; Hilda Nur P
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Corn oil is a food that quite known, but it’s still not optimal. Salad Dressing is one of food product that makeby homoginezer process from oil and water. Emulsifier should be added to keep emultion system stability sothat it not easy for oil and water to be sparated. The experimental aim to find natural emulsfier effect (egg) tosalad dressing emultion satbility and find the product specification that has been made. This experimentconducted by mixing corn oil and lime juice water with a ratio of 250 ml : 25 ml with homoginezer’s duration1,2 and 3 minute, emulsifier’s volume 10,20 and 30 ml, and homoginezer’s velocity 9000, 12000 and 15000rpm. The variabels that has been looked are viscosity, density, also surface tension. The optimal result ofemulsifier volume is 28.2669 ml, homoginezer’s velocity is 9000,14 rpm and homoginezer’s duration 2.9987minute. The optimal equal to viscosities respond (Cp) = -1,20767 + 0,64850 x A + 4,38333E-4 x B +0,02250 x C, the equal respon for dencities respond (g/cm3) =+ 0.76749+7.08125E-3 x A-3.125E-6xB+6.875E-4 x C and the optimal equal to tension respond (N/m)=0.28453-5.0675E-3 xA-1.55E-6 x B+1E-4x C. The salad dressing product with specification pH 4-5, viscosity between 17.85 Nm-2s-1 - 66.76 Nm-2s-1,and surface tension between 0.0942 to 0.1954 N / m. Thus, salad dressing with basic material of Corn Oilhas a good quality.
Solid Biofuel dari Campuran Tongkol Jagung dan Tempurung Kelapa dengan Metode Hydrothermalsebagai Substituen Energi dalam Upaya Reduksi Sampah Pertanian C. Chika Oktalia Putri; Britania Dewi Clarasinta; Ahmad Tawfiequrrahman
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
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Abstract

Hydrothermal treatment is a thermochemical process that using subcritical water for converting biomass to produce high calorific biofuel. In this method, water actsas reactant, as well as medium of reaction. Experiments was conducted in temperature range of 200-270°C, holding time of 20-40 minutes, biomasswater ratio from 1:7.5 to 1:15 at various composition of coconut shell-corn cob. Based on experimental results, it was found that higher calorific value biofuels produced from treatments with higher temperature since more biomass was decomposed into more carbonaceous products. In addition, longer holding time also raised calorific value due to more complete decomposition. It was also indicated that increasing amount of biomass of the feed raised the calorific value of product. The highest calorific value of product of 5,12 kcal/kg was obtained from the treatment of 270°C, holding time of 30 minutes, biomass-water ratio of 1:10 at the coconut shell-corn cob ratio of 1:1
Penyediaan Katalis Cu/ZnO/Al 2 O 3 untuk Katalis Sintesis-Langsung DME Suryanet Sari Dewi; Aisyah Ardy; Herri Susanto
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Direct synthesis of dimethyl eter (DME) using Cu-based catalyst was studied with varying amounts of Zn for methanol synthesis, and Al2O3 as a component for methanol dehydration. Catalyst was prepared using two methods, i.e. the sol gel co-precipitation and the co-precipitation. Mass ratio of (Cu + Zn) to Al2O3 was held constant of 2. The characterization test indicated that co-precipitation catalyst had a better mechanical strength than sol-gel catalyst.Characteristic analysis (BET, XRD, SEM, and AAS) and activity tests (at 220oC). The sol gel co-precipitation method consisted of a higher portion of crystals 61.1%, while the coprecipitation catalyst had 21.8% crystals.However,the solgelco-precipitation had the smallest surface area of the catalyst 47.8m^2/g, while the co-precipitation had 114 m2/g. From the results of SEM analysis showed that almost all of catalyst texture contained amorf (50-70%) than crystal (20-40%). Catalyst CZA1 contained many amorf (78.2%) than crystal (21.8%), and this is match from XRD analysis. The amount of ZnO contained in catalyst (from the analysis of AAS) is quite far away from the target, this is due to lack of time aging in metal forming ZnO. Aging 6 hours enough for formation of crystal ZnO, but give a smallest surface area (20.4 m^2 /g). Co-precipitation method with aging 2 hours tested its activity in the synthesis of DME varied the active phase and promoter. CZA2 provide the best catalyst activity in the test activation and catalytic reduction process. CO convertion was 16% by CZA2 catalyst at 220oC and 1 bar.
Makalah Utama 2 Editor Prosiding sntkk 2017
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Makalah Utama 2
Analisis Proksimat Berbagai Jenis Kacang-kacangan yang Tumbuh di Pulau Timor-NTT Dhanang Puspita; Sarlina Palimbong; Nathania Liantari Pratamaningtyas; Kristiawan Prasetyo Agung Nugroho
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Almost throughout Indonesia, bean/legume plants can grow well. In the province of East Nusa Tenggara,Timor island there are many local beans that grow wild or cultivated. Local beans in the island of Timor,mostly processed into jagung bose (traditional meal made from corn) . Not much variety of food types basedon local beans. This study aims to identify the nutritional value of local beans in the island of Timor. Themethod used is by measuring the content of proteins, carbohydrates and fats. From the analysis of theresults obtained, the beans with the highest protein are arbila merah (18.55%), the highest carbohydratesare arbila biji besar (76.16%), and the highest fat are arbila biji loreng (1.85%). The results of this analyzecould be a recommendation in the processing of beans-based food to increase the added value andcommunity nutrition.
Effect of Ultrasound for Reducing Sugar Production from Cassava Starch Bramantyo Airlangga; Febriyanto Puspasari; Prida Novarita Trisanti; Sumarno Sumarno
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2018: PROSIDING SNTKK 2018
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

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