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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.
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Articles 76 Documents
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Search results for , issue "2017: PROSIDING SNTKK" : 76 Documents clear
Extraction of Phytochemical Compounds from Pressed-Palm Fiber Using Water and Pressurize Carbon Dioxide Putu Adhitya Dita Putra; Bella Putri Novitasari; Sugeng Winardi; Tantular Nurtono; Kusdianto Kusdianto; Siti Machmudah
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Sub-critical extraction of palm oil from pressed palm fiber using water and preassured carbon dioxide solventwas conducted via the dynamic mode to investigate the ability of water and CO2 to extract α-tocopherol, β-carotene, and phenolic compounds. The yield of palm oil and the solubility of α-tocopherol, β-carotene, andphenolic compounds were investigated at 120; 140; 160; and 180oC and pressure range from 30–100 bar. Theextracted oil was analysed α-tocopherol, β-carotene, and phenolic compounds content using UV–Visspectrophotometry. The results The temperature increase on the process of extracting hydrothermal on thetemperature (120-180oC) increase yield α-tocopherol .The steady to extract α-tocopherol , an acid palmitateand β-carotene on the temperature 180oc with pressure 10 MPa .From the experiment done get the best resulton the temperature 180oC to pressure 10 MPa with yield α-tocopherol 271,28 mg/g sample (% recovery is73,06%), yield pamitate acid 2,066 mg/g sample (% recovery is 0,55% ), and yield β-carotene 0,008 mg/gsample (% recovery is 0,0021 %) as compared to that achieved through conventional palm oil processingindicates that extraction of α-tocopherol, β-carotene, and phenolic compounds using this methode is viable.
Pengaruh Aditif Sodium Lauryl Sulfate dan Carboxy Methyl Cellulose pada Pembuatan Coal Water Mixture I Gusti S. Budiaman; S. Diyar Kholisoh; Placidia Osita O.; Priscilla Hilary K.
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Nowadays Indonesia’s energy needs are increasingly high and estimated at about 2 million barrels of oilequivalent (2 MMBOE). Indonesia's oil reserves are already dwindling, while coal has not well-utilized yet.Recent utilization of coal in the solid phase causes incomplete combustion. An alternative way to completethe combustion is by converting coal into CWM (coal water mixture). CWM is expected to have similarproperties to fuel oil so that it will be more easily atomized and burned. A relatively high calorific value coalfrom Murung Raya (Central Kalimantan) was applied. CWM was experimentally prepared by crushing coalinto very fine granules, it was therefore mixed into the water added by sodium lauryl sulfate (SLS) andcarboxy methyl cellulose (CMC) as dispersant and stabilizer, respectively. Two experimental paramaterschosen in this study included parameter-1 (0,7% SLS and 0,1% CMC) and parameter-2 (0,8% SLS and 0,2%CMC), based on the total mass. Each parameter was mixed into the flask (mixing vessel) containing water.Therefore coal was gradually added with the coal-water ratio of 50%, 55%, 60%, 65%, and 70%. The mixingwas conducted for 120 minutes at temperature of about 50 °C and stirring speed of 500 rpm. The best resultof CWM was performed on parameter-2 with 55% of coal. It had a calorific value of 3845 cal/g and wasstable during its storage within 20 hours.
Analisis Kadar Zat Menguap dan Kadar Karbon Terikat Pada Briket Eceng Gondok – Sekam Padi Tauny Akbari
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
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Water hyacinths are aquatic weeds that have negative impacts of social, economical, and environmental. Water hyacinth has not been widely used as a renewable energy. Aim of this research is to analyze volatile matter content and fixed carbon content at renewable energy sources in the form of water hyacinth – rice husk briquette. The research design is experiment using Factorial Complete Randomized Design (3x3) with two factors; the charcoal combinations of rice husk : water hyacinth and the percentage of tapioca binder. This experiment is repeated 3 times, so there are 27 treatments. The calculation of volatile matter content using ASTMD-3175 standard and the calculation of fixed carbon content using ASTMD-3172 standard. The results show that the lowest volatile matter content (50.5%) and the highest fixed carbon content (20.3%) are owned by briquette A1P3 (combination of rice husk : water hyacinth 1:1 and the percentage of tapioca binder 5%). That briquette is not appropriate with the standards of charcoal briquette (SNI 01-6235-2000)
Pectin Extraction of Citrus aurantifolia’s Peel Using Microwave Assisted Extraction Megawati Megawati; Ruth Samaria Pardede; Desy Putri Nawangsari
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
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This research investigated pectin extraction of lime (Citrus aurantifolia) peel with oxalic acid solvent using Microwave Assisted Extraction (MAE) method. Prior of usage, lime peel was dried and ground to reduce water content and increase contact surface. Extraction using conventional method was also performed to study comparison with extraction using MAE. Extraction using MAE was performed to 10 g material and 300 mL oxalic acid 0.2 N. Pectin solution was then dehydrated using 96% ethanol (1:1 v/v) to get pure pectin. Experiment showed that MAE method obtained pectin with shorter duration (6 minutes with rendement 10.9%) compared to conventional method (20 minutes with rendement 11.8%). Pectin extraction using MAE for 6 minutes at 450 Watt produced 10.9 g pectin, higher than 350 W which produced 10.2 g. At 450 Watt with duration of 2, 3, 4, 5 and 6 minutes, pectin obtained are 0.75; 0.87; 0.93; 1.01 and 1.09 g respectively. The result of FTIR (Fourier Transform Infrared Spectroscopy) and other properties analysis showed that pectin consists of ester, cyclic-carbon, carboxylic and carbonile; and also 8.15% metoxil, 74.57% galacturonic acid, 2.7% water, 0.236% ash, esterification degree of 79.2%, and equivalent weight of 612.
ESTER ASAM KARBOKSILAT DAN ISOPROPIL ALKOHOL UNTUK BAHAN DASAR BIOPELUMAS Mahreni Mahreni; Faizah Hadi; Renung Reningtyas; Gemal Kurniawan; Maulana Fahdlurahman Al Abdillah
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
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ESTERIFICATION OF OLEIC ACID, STEARIC ACID AND ISOPROPIL ALCOHOL FOR LUBRICANT BASE.Uncontrolled spill of petroleum base lubricant has been polluted the environment. An alternative of biodegradable and environmental friendly lubricant is needed to substitute petroleum based lubricant. Biolubricant can be made from plant or animal oil, or synthetic lubricant that meets biodegradability criteria and nontoxic to human and environment. The aim of this research is to produce ester from Oleic acid, Stearic acid and Isopropyl alcohol as a base stock for lubricant. Range of time in reaction was set 3,4, and 5 hour. Stearic acid was varied 11-15 gram, Oleic acid 85- 89 ml, and IPA 10-15 ml. The resulting products of ester were confirmed by FTIR. Kinematic viscosity, Pour point, Freezing pont are evaluated by ASTM analyses. Ester produced from 12 gr oleic acid, 88 ml of oleic acid and 5 mil of IPA at room temperature is still in liquid phase, with kinematic viscosity at 100oCis larger than 4,099 mm2/s, Pour point 24oC and Freezing point = 12oC.This ester is potential to be used as biolubricant base stock.
Studi Pengaruh Co-doping Neodymium (Nd) Terhadap Sifat Fisik Elektrolit Ce0.9Gd1-xNdxO2-z dengan Metode Sol-Gel untuk Aplikasi IT-SOFC Jarot Raharjo; masumi .; Wahyudin .
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Neodymium and Gadolinium co-doped ceria (Ce0.9Gd1-xNdxO2-z) is a promising alternative as a solidelectrolyte for intermediate temperature solid oxide fuel cell (IT-SOFC) due to its low operating temperatureand its high electrical conductivity. Ce0.9Gd1-xNdxO2-z powders, with x=0.25, 0.50 and 0.75mol% ofneodymium were successfully syhnthesized with a sol-gel method and citric acid as an organic precursor.The samples were calcined at temperature of 750oC for 5 hours. The powders properties were thencharacterized by X-ray diffraction, scanning electron microscopy, thermal gravimetry analysis, and thesintered pellets were evaluated by Archimedes method for calculate the density. Sintered Ce0.9Gd1-xNdxO2-zsamples exhibited the maximum theorical density of 97% which is suitable for solid electrolytes. TheCe0.9Gd1-xNdxO2-z powders consist of face-centered cubic fluorite ceria structure confirmed with x-raydiffraction (XRD). methodology investigated showed a better control of stoichiometry, impurities, and lowcost.
Pengaruh Aktivator Effective Microorganism 4 Terhadap Proses Pembuatan Pupuk Organik dari Kotoran Sapi Sri Wahyu Murni; Tunjung Wahyu Widayati; Bassmall Andriouty Pratama; Satriyo Oktavianto
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
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Cow's excrements originated from slaughterhouse is an organic waste that can damage the environmenttherefore need to be process to make something such as fertilizer using activators that help thedecomposition process run faster. Activator used in this experiment is Effective Microorganism 4.Decomposition of cow’s excrements becoming organic fertilizer by mixing cow’s excrements with EffectiveMicroorganism 4 activator. Ratio of cow’s excrements weight (Metric Ton) by volume (Liter) of EffectiveMicroorganism 4 activator is 1:0; 1:1; 1:2; 1:3; 1:4. Thereafter, add the anorganic fertilizer (Urea, KCl,SP-36) and limestone to the mixture each about 2,5 kilograms after that cover the mixture with plastic wrapand make some holes with bamboo. The experiment result for this study using Effective Microorganism 4activator by adding 4 liter in the decomposition process for 18-21 days to produce organic fertilizer consistabout 15,01% organic carbon, 0,87% total nitrogen, 17,25 C/N ratio. These result meet the qualitystandards set by the Minister of Agriculture No.70/Permentan/SR.140/10/2011.
Investigasi Sifat Bahan Bakar Campuran Disel Minyak Bumi dan Biodisel Dari Minyak Kelapa Sawit, Minyak Jarak dan Minyak Kanola S.I Heriyanti; Sumbogo Murti S.D; Adiarso Adiarso
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
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Biodiesel is a renewable fuel derived from various biomass which is very abundant in Indonesia. The physical properties of biodiesel are similar to those of petroleum diesel, but the fuel significantly reduces green house gas emission and toxic air pollutants. However, there are some disadvantages of biodiesel such as vulnerable to water contamination, lower energy content as well as having problems at low temperatures. Biodiesel can be blended and used in many different concentrations. Indonesia government has launched a policy of biodiesel mix gradually to 30% in 2020. To ensure that policy implementation, a study of blending biodiesel from Palm oil, Jatropha oil and Canola oil has been carried out with various compositions. Some thermophysical properties of the mixture have been investigated in accordance to ASTM standard. The measurement result of biodiesel blends fuel varies according to the mixture composition and origin of biodiesel. Generally, the properties of Palm oil and Canola oil biodiesel blend fuel can meet the standards that apply in Indonesia but biodiesel from Jatropha oil cannot meet the quality standards for oxidation stability. Antioxidant can be used to improve the oxidation stability of biodiesel and its mixture.
Fuel Grade Ethanol Production by Batch Distillation Using Ternary Components I Gusti S Budiaman; Tjukup Marnoto; Chintya Rizki Hapsari; Risqi Angga Yudha Prakosa
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
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Ethanol is a chemical compound whose production is abundant in Indonesia. Ethanol is also widely used in the pharmaceutical industry, cosmetics, solvents, and spiritus fuel. Pure ethanol also has a high octane rating making it suitable used to raise the octane number of the gasoline. One way that can be done to purify the ethanol is a way to shift the ternary distillation azeotrope so that its purity can reach over 99.5%. Chemicals used to raise the boiling point of water include sulfuric acid, sodium hydroxide, ethylene glycol, glycerol and citric acid at certain concentrations. Ternary components were added to the raw material alcohol 86% specified in such order to obtain increasing boiling point of water as the heavy fraction by 5 oC, 10 oC, 15 oC, 20 oC and 25 oC.The distillation process is done in batch include column packing material at atmospheric pressure. Distilled provide 99.57% up to 99.91% purity ethanol in ternary addition of sulfuric acid, 99.59% up to 99.79% in the ternary addition of sodium hydroxide, 99.55% in the ternary addition of ethylene glycol, 99.64% on a ternary addition of glycerol, and 99.42% in ternary addition of citric acid. So in this experiment only the addition of sulfuric acid ternary who can give the best results with ethanol content 99.91%.
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Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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