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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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Pengaruh Lapisan Kalsium pada Devais Sel Surya Organik Berbasis Bahan Polimer Budiawan, Widhya; Widodo, Slamet
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

Organic solar cells (OSC) as an emerging photovoltaics devices have potential clean energy source due to their advantages properties, including low-cost production, light weight, and promising for flexible devices. In this study, we investigated the effect of calcium as buffer layer on top photoactive layer of the polymer based solar cell device. Poly-3-hexylthiophene (P3HT) as donor material combining with phenyl-C61-butyric acid methyl ester (PC61BM) were blended to form bulk heterojunction. Calcium was deposited on top of polymer (P3HT) and fullerene derivative (PC61BM) photoactive layer using thermal evaporation inside ultrahigh vacuum chamber. Calcium was selected as buffer layer because of its low-work -function in order to improve performance of polymer solar cells. Our study presented that calcium buffer layer enhanced the performance of solar cells mainly in open circuit voltage, VOC, (0.45 V to 0.61 V) and fill factor, FF, (44% to 65%), increasing power conversion efficiency (PCE) from 1.79% to 3.79%. This result suggested that the improvement of polymer solar cells performance because of the recombination suppression and more efficient charge transfer in cathode. The energy level alignment and work function properties of calcium form an ideal ohmic contact between the active layer and the cathode, thus ensuring effective electron injection from the active layer to the cathode. We also demonstrated the fabrication of polymer solar cells device under ambient atmosphere. However, the devices fabricated under ambient atmosphere have lower performances than fabricated inside nitrogen filled glovebox, because polymer photoactive material and calcium are easily degraded by moisture.
Pengaruh penambahan Ekstrak Biji Kelor sebagai Antioksidan Masker Gel peel off Sari, Fatma; Sari, Alvika Meta; Nugrahani, Ratri Ariatmi; Kurniaty, Ika; Putri, Dirga Aulia Eka
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

Compounds called antioxidants are particularly beneficial to human health. Antioxidant substances are frequently utilized as free radicals because they can prevent the growth of oxidation reactions. Because of their high antioxidant content, moringa seeds produce oil that is resistant to rancidity and does not easily oxidize.  The peel-off gel mask formulation in this investigation included Moringa seed oil extract as a source of natural components. The goal of this study was to evaluate the antioxidant activity of a peel-off gel mask preparation made from Moringa seed oil extract. Maceration extraction is the technique used for extraction, and DPPH is the technique used to test for antioxidants. The results showed that the sample with a solvent volume of 450 ml had the best yield (34.64%), and the antioxidant activity of the extract of Moringa seed oil was measured at 256.89 g/ml with an average pH of 5.79.  The Moringa seed oil extract peel-off gel mask has the attributes of being white, thick, and smelling like moringa seeds. The peel-off gel mask gets thicker the more Moringa seed oil extract there is in it. This study establishes the potential of using Moringa seed oil extract in peel-off gel mask formulations extract in peel-off gel mask formulations.
Sintesis Biodiesel dari Minyak Jelantah dengan Katalis K2CO3/y-Al2O3 Handayani, Fitriyani Yetti; Cahyono, Rochim Bakti; Budiman, Arief
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

Biodiesel is an environmentally friendly alternative fuels. The price of biodiesel is still relatively expensive due to the high price of raw materials. Thus, cheaper raw materials such as used cooking oils can be used. Used cooking oils can be used to produce biodiesel by transesterification reaction using alcohol and catalyst. The effect of temperature on the conversion was studied in this research. The research was carried out in batch at various temperatures of 45, 55 and 65 oC by reacting used cooking oil and bioethanol with catalyst K2CO3/γ-Al2O3. The ratio of used cooking oil and bioethanol is 1:9 and the concentration of catalyst is 3%. The reaction was run for 5, 10, 15, 30, 60, and 120 minutes, then the biodiesel was separated from the catalyst and glycerol. Furthermore, the biodiesel samples were analyzed by GC-MS to determine the alkyl ester content. The result showed that the highest conversion was 86.39% at 65oC. The biodiesel product complies with SNI 7182:2015, with a density of 871.7 kg/m3, kinematic viscosity of 4.82 mm2/s, flash point of 176oC, cloud point of 9oC, copper plate corrosion number 1, acid number 0.39 mg-KOH/g, total glycerol 0.16%, and ester content 98.3%.
Pemanfaatan Membran Selulosa Bakteri dari Limbah Kulit Pisang sebagai Matriks Masker Antioksidan Wibowo, Claudia Shinta Octa; Hidayat, Muslikhin; Sulistyo, Hary
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

Banana skins have several potential applications in the health and beauty industries. Through a fermentation process with the help of Acetobacter xylinum, it produces banana skin bacterial cellulose. It is possible to further process this cellulose into a face mask matrix. Bacterial cellulose has biodegradable properties, a low toxicity value, and a good absorption ability to be applied as a face mask matrix. The addition of serum to the mask matrix aims to focus on the function of the formulated matrix. Methods: filtering the sample; making nata de banana skin with different fermentation times; making a matrix mask; matrix mask characterization; and data analysis. The results of the study showed that the variation of different fermentation times can affect the resulting cellulose products. The optimal fermentation time for producing nata was 10 days, resulting in a thickness of 0.92 cm. Then, the evaluation tensile strength test on the mask matrix revealed the highest value was also a 10-day fermentation variation, 3.000–10.000 kg/cm2. And last, the best test of the release of vitamin C is the 10-day fermentation variation.
The Effect of Complexity of Fuel Oil Composition Compounds on Desulphurization Degrees in Oxidative Desulphurization Processes Rofii, Mochammad; Nasikin, Mohammad
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

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.
Metode Ekstraksi dan Karakterisasi Kitosan Dari Limbah Seafood : Kajian Pustaka Ivana, Cheryn; Husin, Amelia S; Setiawati, Agustina
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

Seafood waste is one of the common sources for chitosan production, such as crustaceans (shrimp, crab, and sea shells), squid cartilage, and others. Chitosan is a cationic biodegradable polymer which is biocompatible and has nontoxic properties to be applied in biological system. Chitosan, degraded from chitin, widely is used for drug delivery, tissue engineering (bone scaffold), food (coating film), agriculture (protection from harmful microorganisms), and pharmacological therapy such as an antibacterial agent for the human body. Chitosan is extracted with various methods such as chemical extraction, biological extraction, and microwave radiation extraction. Tthe characterization of chitosan can be known by percent yield, organoleptic test, dissolution, water content, and FTIR spectroscopy. The purpose of this review article is to overview the chitosan extraction method from environmental waste including the advantages and disadvantages of each method.
Pengolahan Limbah Warna DYA Industri Pencelupan Tekstil dengan Teknologi UV / H2O2/ TiO2 Hudaya, Tedi; Tunardi, Stephen Reinaldo; Octaviany, Octaviany
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

Textile wastewater often contains non-biodegradable as well as toxic dyes, for example Dianix Yellow Ace (DYA). One possible destructive method of treating such waste treatment is the Advance Oxidation Processes (AOPs), in which the oxidation of organic compounds by potent hydroxyl radicals (● OH) occurs. This research had a novelty of combining UV / H2O2 with UV / TiO2 to study the effect of treatment process’ variables, i.e. [H2O2], [TiO2] and initial pH on the rate of degradation as well as the ratio of BOD / COD until biodegradability threshold was reached.  This research employed a Central Composite Design (CCD) experimental design technique that used factorial design and included center points as well as axial points for better accuracy and understanding of the process. CCD helped create a response surface model for optimization and prediction. The variations were the concentration of H2O2 between 0.01 - 1.00 %w, TiO2 concentrations ranging from 0.80 to 3.00 g.L-1 and initial pH between 1 - 11.  The order and reaction rate constants were also determined by measuring the DYA concentrations using a spectrophotometer.  The optimum condition for DYA degradation was found at pH 3, 0.2% H2O2 and [TiO2] 3 g.L-1 with a pseudo first-order rate constant of 0.0524 min-1.  UV irradiation around 75 minutes resulted in DYA removal of 99%.  The wastewater fell into the biodegradable limit after 60 minutes treatment, with a value of BOD / COD ratio was 0.1029 so that the wastewater became biodegradable to be further treated by much cheaper biological method.
CFD Simulation and Efficiency Analysis of Natural Gas Ejector-Booster System Kurniawan, Aditya; Nuzuladzmi, Rafida Nariswari; Afni, Amanda Lailia Nur
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

Natural gas production involving several gas-well streams with different operating pressure creates a problem, especially for lower-pressure streams. Usually, a compressor unit is installed to enable a lower-pressure stream to tie in the higher-pressure stream. However, this solution requires high costs and investment related to compressor operation. Natural gas ejector provides an alternative, where a higher-pressure stream act as the motive fluid to withdraw the lower-pressure stream.  This work aims to simulate the flow inside the ejector using ANSYS Fluent CFD simulator. The model used is validated to published data by other authors. Ejector efficiency is calculated for several operating pressure and ejector geometry: ratio of mixing tube length to diameter. We found that the variation in L/D ratio of mixing tube in current study did not significantly affect the ejector performance. Conversely, it was strongly affected by both motive and suction pressure, where the entrainment ratio is generally higher for lower pressure ratio. On the other hand, the efficiency of ejector process exhibited an optimum behavior, where we obtained the highest efficiency of 26.7% at pressure ratio of 0.1765. Therefore, this result can be utilized as the recommended operating condition.
Pengaruh Variasi Kosentrasi Tepung Tapioka Termodifikasi Dengan Metode Enzimatis Sebagai Bahan Substitusi Pada Proses Pembuatan Mie Putri, Itci Amada; Abdillah, Hamid
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

Indonesia has dependency to rice Enough high , so request rice very tall And when happen scarcity rice inside _ country . So needed innovation product For cope problem such , ie Wrong only one replace rice with noodles wet as alternative  replacement source carbohydrates . Material raw making noodles wet on study This is flour tapioca modified And flour wheat as material substitution . Expected with use material non- flour basis For product noodles capable replace dependency use flour flour . On study This use variation comparison composition flour tapioca modified And flour different flour _ namely ; (10%:90%, 25 % : 75%, and 30%:70%) use variation concentration enzyme 10%, 20%, 30%, 40%, and 0% as control parameters . Results study show comparison flour tapioca modified influential to noodle water content wet And quality noodles wet include (aroma, elasticity , and color ). Highest water content that is sample noodles wet on ratio of 30% flour tapioca modified and 70% flour wheat with 40% enzyme concentration of 64.54 % . According to Body Standard Indonesian National requirements quality noodle water content good wet is 65%, got concluded that noodles wet fulfil requirements.
Biodegradable Wet Wipes dari Sabut Kelapa Sawit (Palm Fiber) dengan Ekstrak Flavonoid Daun Kelapa Sawit Sebagai Bahan Antibakteri Fadilah, Fadilah; Ningtyas, Divanda Sekar Rahayu; Dewi, Audrey Vista Candra; Krisnawati, Anita Budi; Putra, Reyza Fachrezy
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

The wet tissue currently circulating in the market is made of synthetic fibers consisting of 30% viscose fibers and 70% polyester fibers, and 90% of the wet tissue contains plastic. Indonesia's palm oil industry grows annually, however. Palm fiber waste has high cellulose, useful as wet tissue raw material substitute. This study used flavonoids from palm leaves as an antibacterial material to create biodegradable wet wipes from palm fiber and evaluate their antibacterial and antiseptic effectiveness. The best characteristics of biodegradable wet wipes are obtained with a composition of 91.5% (w/w) palm coconut fiber cellulose, and a ratio (w/w) of PVA:tapioca:chitosan at every 10 mL of used VCO of 2:3:6 (1.5%:2.25%:4.5%) with variations in pulp bleaching and the method of applying the binder solution by being spread onto semi-dry tissue paper. The evaluation of wet tissue includes tests for tensile strength, color, biodegradability, phytochemical analysis, antibacterial testing, antiseptic testing, irritation testing, and pH testing. The test results showed that biodegradable wet wipes made of palm coconut fiber and flavonoid extract from palm coconut leaf at concentrations of 10%, 15%, and 20%, which have been adjusted to SNI 8526:2018 standard, have bacterial reduction effectiveness of 68.09%, 79.06%, and 89.94%, respectively.

Page 51 of 59 | Total Record : 588

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