Seminar Nasional Teknik Kimia Kejuangan
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 â€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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<![CDATA[Pengaruh Penambahan Jumlah Air terhadap Kekerasan, Kerapuhan dan Waktu Hancur Tablet Obat ]]>
<![CDATA[Fitriyano, Gema]]>;
<![CDATA[Prabowo, Aris]]>;
<![CDATA[AB, Syamsudin]]>;
<![CDATA[Kurniaty, Ika]]>;
<![CDATA[Ismiyati, Ismiyati]]>
<![CDATA[ Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023 ]]>
Publisher : <![CDATA[Seminar Nasional Teknik Kimia "Kejuangan" ]]>
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<![CDATA[The water content in the tablet is related to the compressibility of the tablet, because the water content formed acts as a binder that will fill the empty space between tablets. Excess water content in the tablet formulation can cause the tablet to become hydrophobic so that the tablet is difficult to wet during dissolution and travels in the body. Thus, the tablet will be more difficult to disintegrate in the stomach. The procedure for turning jackfruit seeds into flour are peeling, milling, and drying at a temperature of 105 oC. Following, water at 90 oC is mixed with jackfruit seed flour to make mocilago (mixture 1). fdc yellow and patent blue v dye into a beakerglass containing aquademin 95 oC then stir until completely uniform (mixture 2). Put mixture 1 into mixture 2 which has a temperature >80 oC. In the granulation stage, all ingredients are mixed with fine granulated sugar, magnesium hydroxide, dimethyl polysiloxane, some jackfruit seed flour and hydrotalcite to form mixture 3. Then add the binder solution Granule drying and drug printing processes follow. The characterization parameters of tablets produced in this research were tablet friability, tablet hardness and tablet disintegration time. Adding 193.2 mL of water to 25.6 grams of jackfruit seed powder was a variable that gives optimum effect on tablet hardness, friability, and disintegration time]]>
<![CDATA[Karakteristik Morfologi dari Formulasi Pupuk NPK Coated dengan Enkapsulasi Starch-PVA-Glycerol ]]>
<![CDATA[Habibi, Wildan]]>;
<![CDATA[Purnomo, Chandra Wahyu]]>;
<![CDATA[Perdana, Indra]]>
<![CDATA[ Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023 ]]>
Publisher : <![CDATA[Seminar Nasional Teknik Kimia "Kejuangan" ]]>
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<![CDATA[In modern agriculture, the application of NPK fertilizer plays an important role in food security. However, most commercial uncoated fertilizers have low nutrient absorption efficiency with 30-70% nutrient loss, advances to financial losses for farmers and causing environmental issues. Slow-release fertilizer (SRF) is the best solution to decrease loss rate, supplying nutrients sustainably, and reduces potential negative environmental effects. These fertilizers are made by physically encapsulating NPK fertilizer with organic hydrophobic materials (starch-polyvinyl alcohol (PVA)-glycerol). Double layered encapsulation is formulated by in-situ copolymerization of starch with vinyl acetate monomer from PVA in different ratios. Glycerol is added to increase the film compatibility. Scanning Electron Microscope (SEM) followed by Energy Dispersive X-ray (EDX) analysis reveals the morphological characteristic of uncoated and coated NPK samples. The surface micrograph of uncoated NPK exhibits fine spire crystals that are intensely cemented on to the surface with some bigger crystals of potassium chloride. The gaps and pores are also visible. The SEM micrographs of coated NPK depict layering and agglomeration that is a clear indication of the coating. A higher ratio of PVA increases agglomeration on the surface of coated NPK, representing dense and complete coverage with less pores and cavities occurs]]>
<![CDATA[Pengaruh Penambahan Silica Nanopartikel dan Surfaktan SLS (Sodium Lignosulfonat) terhadap Proses Adsorpsi pada Enhanced Oil Recovery (EOR) ]]>
<![CDATA[Handayani, Destias Selly]]>;
<![CDATA[Yuliansyah, Ahmad Tawfiequrrahman]]>;
<![CDATA[Purwono, Suryo]]>
<![CDATA[ Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023 ]]>
Publisher : <![CDATA[Seminar Nasional Teknik Kimia "Kejuangan" ]]>
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<![CDATA[Surfactant flooding is a chemically enhanced oil recovery (EOR) technique that removes trapped residual oil by lowering the oil-water interfacial tension. The success of surfactant flooding is strongly affected by surfactant loss through its adsorption process on reservoir mineral rocks. Surfactant adsorption is a test method to determine whether surfactant is adsorbed in the reservoir rocks. In the surfactant adsorption test, only static adsorption was carried out. The mixed-surfactant formulation used 70% surfactant SLS, 22% PFAD, and 8% 1-octanol (w/v). Mixed-surfactant concentration variations are 0.25, 0.5, 0.75, and 1% (w/v). The IFT test results showed that the smallest IFT value at a concentration of 1% is 3.15 x 10-3 mN/M. In this research, adding silica nanoparticles (SNPs) to the mixed-surfactant solution is expected to reduce the interfacial tension (IFT) value and the amount of surfactant adsorbed in the reservoir rocks. Variations of SNPs concentration used are 0.05, 0.09, 0.15, and 0.3% (w/v). The lowest IFT test result by adding concentration SNPs of 0.09% is 2.07 x 10-4 mN/M. The adsorption test result showed that by adding SNPs with concentration 0.09% with adsorption time of 24h is effective to used for adsorption.]]>
<![CDATA[Preparation and Characterization of Ni/H-ZSM-5 Catalysts for Producing Green Diesel from Palmitic Acid ]]>
<![CDATA[Kurniati, Sayekti]]>;
<![CDATA[Azis, Muhammad Mufti]]>;
<![CDATA[Dwiatmoko, Adid Adep]]>
<![CDATA[ Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023 ]]>
Publisher : <![CDATA[Seminar Nasional Teknik Kimia "Kejuangan" ]]>
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<![CDATA[Biofuel is a promising alternative as a sustainable energy resource in the transportation sector in Indonesia. Green diesel is one of biofuels that can be produced from feedstock containing fatty acid. Fatty acid conversion to green diesel can be conducted via hydrodecarboxylation or hydrodeoxygenation process. Catalyst Ni/H-ZSM-5 is a potential catalyst to convert fatty acid to n-alkane which is the main component in green diesel. In this work, we prepared Ni/H-ZSM-5 catalyst with various Ni loading of 7%, 13%, 18%, and 25%, respectively. The catalysts were synthesized according to a simple incipient wetness impregnation method. Those catalysts were characterized with X-ray fluorescence, Field-Emission Scanning Electron Microscopy, and NH3-TPD. The highest nickel-loading catalyst, Ni 25%/H-ZSM-5, gave the best dispersion. NH3-TPD results showed the presence of two acid sites, namely Brønsted acid site and Lewis acid site. The presence of Brønsted acid sites is crucial to facilitate fatty acid conversion to n-alkane.]]>
<![CDATA[The Effect of Complexity of Fuel Oil Composition Compounds on Desulphurization Degrees in Oxidative Desulphurization Processes ]]>
<![CDATA[Rofii, Mochammad]]>;
<![CDATA[Nasikin, Mohammad]]>
<![CDATA[ Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023 ]]>
Publisher : <![CDATA[Seminar Nasional Teknik Kimia "Kejuangan" ]]>
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<![CDATA[Oxidative Desulfurization is an alternative process to reduce sulfur content in fuel. ODS is an oxidation reaction of sulfur compounds in fuel, which contains various hydrocarbon compounds, using an oxidizing agent with the help of a catalyst. The polarity of fuel, sulfur compounds and catalysts is a critical success factor for ODS. This study aims to determine the effect of the complexity of the model fuel used in the ODS process on the degree of sulfur reduction. The complexity variable is considered by polarity, which is determined based on the dielectric constant of the compound using the mixed concentration average of the dielectric constant of the pure compound. The model fuel used in this study is a mixture of hydrocarbon compounds having 6 C atoms in the form of n-hexane, cyclohexane, and benzene. Dibenzothiophena is used as a representative of sulfur compounds with an initial concentration of 300 ppm in each sample. The independent variables that were varied were the composition of the model fuel and the ODS reaction time. Sulfur content in model fuel before and after ODS was analyzed using UV-Vis. Meanwhile, the dielectric constants of fuel and catalyst are determined using empirical equations. The results showed that the polarity of the model fuel changed depending on the composition of the constituent compounds. The ODS process resulted a decrease in DBT levels as a function of increasing the time reaction of ODS. Changes in the polarity of the model fuel solvent give different desulphurization results. The highest degree of desulphurization was obtained at 21% with the use of model fuel with a catalyst which had a dielectrict constant of 1.995.]]>
<![CDATA[Preparasi Katalisator Berbasis Biochar dari Ampas Buah Merah untuk Reaksi Transesterifikasi Minyak Jelantah ]]>
<![CDATA[Rahmah, Puspa]]>;
<![CDATA[Yuliansyah, Ahmad Tawfiequrrahman]]>;
<![CDATA[Wintoko, Joko]]>
<![CDATA[ Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023 ]]>
Publisher : <![CDATA[Seminar Nasional Teknik Kimia "Kejuangan" ]]>
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<![CDATA[Biodiesel can be produced from plant and animal oils by transesterification reaction using homogeneous or heterogeneous catalysts. In this study, we prepare a biochar-based catalyst, as a heterogeneous catalyst, for transesterification of used cooking oil. The biochar was made by the pyrolysis of the solid waste from the oil extraction of Papuan red fruit (Pandanus conoideus). After the pyrolysis, the solid was immersed in KOH solution to provide the kalium in the produced biochar. The biochar was then sulfonated by H2SO4 5M for 15h at 120°C. Afterwards, the catalysts were characterized by BET for surface area measurement, FTIR for functional groups on the catalyst surface determination and XRD for successive crystallography characterization. The catalytic performance was studied by conducting transesterification of used cooking oil using methanol with the prepared biochar-based catalysts. The transesterification optimum conditions were found to be oil to methanol molar ratio of 1:15, temperature of 60°C, reaction time of 2 hours and the catalyst amount of 3% of the oil weight. Furthermore, the highest biodiesel yield was obtained by the catalyst prepared from biochar that was sulfonated with 5M H2SO4 solution]]>
<![CDATA[Sintesis Asil Gliserol Melalui Reaksi Esterifikasi Asam Oleat dengan Gliserol ]]>
<![CDATA[Husada, Caesar Purnama]]>;
<![CDATA[Sulistyo, Hary]]>;
<![CDATA[Sediawan, Wahyudi Budi]]>
<![CDATA[ Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023 ]]>
Publisher : <![CDATA[Seminar Nasional Teknik Kimia "Kejuangan" ]]>
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<![CDATA[Acyl glycerol derivatives from oleic acid, especially monoacylglycerol (MAG) and diacylglycerol (DAG), are products that is widely used in the food, lubricant, and cosmetic industries. Acyl glycerol can be obtained through esterification reaction of glycerol with fatty acids. This study aims to determine the effect of temperature on the conversion and amount of acyl glycerol produced. This research was conducted using a batch system with temperature variations of 80°C, 100°C, and 120°C with HCl 1%wt as catalyst and 1:1 reactant mole ratio (glycerol: oleic acid) for 2 hours reaction time. Samples were taken every 10 minutes, then the samples were analyzed using Thin Layer Chromatography (TLC) to determine the fraction of the product produced. The experimental results showed that increasing the temperature will produce higher conversions and acyl glycerols. The highest conversion of oleic acid occurred at 120°C (43.016%), with mole percentage of 1,796% monoacylglycerol (MAG), 3,820% diacylglycerol (DAG), and 5,813% triacylglycerol (TAG).]]>
<![CDATA[Sintesis Surfaktan Non-ionik Berbasis Asam Palmitat Melalui Reaksi Esterifikasi dengan Gliserol ]]>
<![CDATA[Purbaningdyah, Emma]]>;
<![CDATA[Sulistyo, Hary]]>;
<![CDATA[Sediawan, Wahyudi Budi]]>
<![CDATA[ Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023 ]]>
Publisher : <![CDATA[Seminar Nasional Teknik Kimia "Kejuangan" ]]>
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<![CDATA[Esterification of glycerol using the fatty acids is one of methods that is widely used in the conversion of glycerol to synthesize products containing monoacylglycerol (MAG) and diacylglycerol (DAG). Among the various types of surfactants, monoacylglycerol (MAG) and diacylglycerol (DAG) are the most widely used of non-ionic surfactants in many industries such as food, pharmacy and cosmetic. This study aims to determine the effect of temperature on the conversion of palmitic acid and the concentration fraction of products. This research was conducted in a batch system with the temperature variations of 80°C, 100°C and 120°C; using 1% HCl catalyst concentration of palmitic acid mass, and reactant mole ratio of 1:1 (glycerol: palmitic acid). Samples were taken every 10 min during 120 min of reaction, to be analyzed by Thin Layer Chromatography (TLC) to determine the concentration fraction of products. The experimental results showed that increasing temperature enhanced the products formation, thus, increased the fraction concentration of products. However, the highest conversion of palmitic acid (80.14%) was obtained at 120°C, with concentration fraction of 1.67% monoacylglycerol (MAG), 10.96% diacylglycerol (DAG) and 6.01% triacylglycerol (TAG).]]>
<![CDATA[Potensi Mikroorganisme Indigen Perairan Teluk Lampung sebagai Pendegradasi Masker Sekali Pakai (Disposable Face Mask) ]]>
<![CDATA[Deviany, Deviany]]>;
<![CDATA[Achmad, Feerzet]]>;
<![CDATA[Purwanti, Millennia Rischa]]>;
<![CDATA[Yudhanti, Tri Febri]]>
<![CDATA[ Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023 ]]>
Publisher : <![CDATA[Seminar Nasional Teknik Kimia "Kejuangan" ]]>
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<![CDATA[To prevent the transmission of COVID-19, the World Health Organization recommends the implementation of health protocols including using disposable masks. The use of disposable face masks has an impact on the emergence of mask waste in aquatic environments which results in pollution of water sources by microfibers. Degradation by indigenous microorganisms can be one of the solutions for handling waste that is environmentally friendly and cost effective. In this study, bacteria were isolated from the coast of Lampung Bay which was polluted with plastic waste and masks. Bacterial isolates were characterized by morphological and biochemical tests before the selected one being used for degradation. After seven days of incubation, gravimetric analysis showed that the mask pieces increased in weight when compared to the control. However, the degradation process can be shown by the results of Scanning Electron Microscope (SEM) analysis which shows damage in the form of holes on the surface of the mask when compared to the new mask and the control. SEM images also showed the presence of bacterial biomass remnants attached to the surface of the mask. Based on the results of this study, Lampung Bay indigenous microorganism isolate showed potential as a degrader of disposable face masks.]]>
<![CDATA[Degradasi Masker Sekali Pakai dengan Vermiremediasi dan Penambahan Isolat Bakteri Teluk Lampung ]]>
<![CDATA[Deviany, Deviany]]>;
<![CDATA[Achmad, Feerzet]]>;
<![CDATA[Rosafira, Adela]]>;
<![CDATA[Aini, Syarifah]]>
<![CDATA[ Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023 ]]>
Publisher : <![CDATA[Seminar Nasional Teknik Kimia "Kejuangan" ]]>
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<![CDATA[The use of disposable face masks during the Covid-19 pandemic has resulted in the emergence of mask waste polluting aquatic environments due to poor management. This waste will decompose into microfibers which accumulate in aquatic organisms. The combination of vermiremediation with the addition of degrading microorganisms can be one of the solutions for treating disposable mask waste. In this study, Eudrilus eugeniae, an earthworm species, was used in vermiremediation with variations in the treatment by adding indigenous bacterial isolate from the waters of Lampung Bay which has been proven able to degrade disposable masks. The results showed that the vermiremediation technique can be used to degrade disposable masks, indicated by a decrease in mask weight after incubation for two months in the amount of 0.03 grams and 0.05 grams for the treatment with the Eudrilus eugeniae and a combination of bacterial isolate respectively against the initial weight. Lampung Bay indigenous bacterial isolate helped accelerate the mask degradation process in the combined vermiremediation technique. The carbon, nitrogen, phosphorus, and potassium contents of the compost produced by the vermiremediation process have met the SNI for compost from domestic organic waste.]]>
