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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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Penentuan Kondisi Operasi Optimum Ekstraksi Pewarna Alami Dari Limbah Serbuk Kayu Ulin (Eusideroxylon zwageri) Menggunakan Response Surface Method Putribarafike, Apriliantina; Rahayuningsih, Edia; Faridah, Eny
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

The use of natural dyes is an alternative to replace synthetic dyes. One of the natural resources in Indonesia that can be used as a natural dye is wood sawdust of Ulin wood. Phytochemical analysis results showed that the extract of Ulin wood sawdust contains tannin compound, as the chemical of these sawdust is potential as a source of natural dyes. This research is to find the optimum condition of natural dye extraction from Ulin wood sawdust.  Variables observed in this research are temperature, the weight ratio of sawdust to the solvent volume, and mixer rotation speed. The extraction process with a third necked flask with a stirrer, condenser, heat mantle, and with water as solvents. Natural dye content on the extract was analyzed by gravimetry. The optimization of operating variables extraction using Response Surface Method (RSM) with Box-Behnken model. The results that the optimum temperature was 90oC, the weight ratio of Ulin wood sawdust to the solvent volume was 0,25 g/mL, and the optimum mixer rotation speed was 250 rpm. In this optimum condition, the natural dye content in the extracts was 1,2054%
Pengaruh Variasi Konsentrasi Tepung Bonggol Pisang Termodifikasi dengan Metode Enzimatis sebagai Bahan Substitusi pada Pembuatan Mi Basah Widyaningsih, Arum Dewi; Abdillah, Hamid
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

The banana tuber contains high carbohydrates, but it is still rarely used because of the brown color of the flour due to heating. To cover this deficiency, modification with α-amylase enzyme was carried out. The purpose of this study was to obtain a suitable formulation for the manufacture of wet noodles that meet the requirements of SNI quality standards. The treatment variation made was the ratio of 3 tapioca: 9 banana tuber: 48 wheat (80% wheat), 3 tapioca: 6 banana tuber: 21 wheat (70% wheat), 3 tapioca: 5 banana tuber: 12 wheat (60% wheat). The variation of α-amylase enzyme used was 10%, 20%, 30%, 40% with 0% as the control variable. Organoleptic test to determine the most preferred noodle variation. The test parameters were color, aroma and texture. The results showed that the best quality with color and aroma wet noodles were obtained from a combination of 60% with 40% α-amylase enzyme concentration ratio. As the texture parameters were obtained from a combination of 60% wheat with 10% α-amylase enzyme concentration ratio. The results showed that the moisture content of wet noodles had met the SNI 2987:2015 standard, which is below 65%.
Sintesis Surfaktan Non-ionik Berbasis Asam Palmitat Melalui Reaksi Esterifikasi dengan Gliserol Purbaningdyah, Emma; Sulistyo, Hary; Sediawan, Wahyudi Budi
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

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).
Penjerapan Natrium pada Hasil Ekstraksi Silika dari Lumpur Panas Bumi Akmal, Afiffurroyan Aflah; Purnomo, Chandra Wahyu; Ariyanto, Teguh
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

Geothermal sludge contains silica which can be used as plant fertilizer. Extraction of silica from geothermal sludge can be carried out by the extraction method using sodium hydroxide solution to form sodium silicate. This extraction was conducted by varying the extraction time of 10, 20, 30, 40, 50, 60, 70 and 80 minutes; NaOH concentration of 1,5N; and extraction temperature of 80oC. Extracted silica concentration was analyzed using UV-Vis Spectrophotometry. The best extracted silica content was 158673 ppm under 60 minutes of extraction time, 80oC of extraction temperature, and 1.5N of NaOH concentration. The results of this extraction still contain sodium at a concentration and need to be reduced so that it can be used as fertilizer. The process of reducing sodium concentration using the ion exchange method in a batch system. This process uses variations of initial sodium concentration with a resin mass of 20 grams and temperature of 45oC. From the Atomic Adsorption Spectroscopy (AAS) analysis, the adsorption capacity (qe) increases with increasing the initial sodium concentration. Langmuir's equilibrium provide a match to the adsorption equilibrium experimental data.
Modifikasi Coating Pada Permukaan Implan Ti-6Al-4VELI Berbasis Kombinasi Hidroksiapatit Cangkang Rajungan dan Polycaprolactone Nibras, Adinda Lulyta Naifa; Susanti, Ajeng; Ramadhan, Haykal Nur Fajri; Kamilah, Villia Lidzati; Ningrum, Eva Oktavia
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

Ti-6Al-4V ELI (Extra Low Interstitials) is widely used material in orthopedics with its excellent mechanical properties and biocompatibility. However, in application it has a risk of corrosion caused by body fluids exposure as a results in inhibitation of tissue growth. Therefore, in this study modification of the surface of the Ti-6Al-4V ELI implan by coating Hydroxyapatite (HAp) combined with Polycaprolactone (PCL) using the dip coating method was carried out. The effect of HAp/PCL coating on implant morphology is investigated. Moreover, the effects of HAp/PCL concentrations on surface roughness, corrosion rates, and coating thickness are elucidated. The results showed that the hydroxyapatite of crab shells synthesized in a compliance with Food and Drug Association standards, i.e., Ca content of 93.03%. The functional groups confirmed with HAp standard chart JCPDS no. 09-0432 with crystallinity of 88.32%. The post-coated implant showed the coating thickness range of 140-200 µm and roughness average of 120-129 nm. In addition, the corrosion rate showed 0,043-0,33 mmpy which also complied with medical standard.
Batik Industry Wastewater Treatment using Constructed Wetland in Sidoarjo Regency Soeprijanto, Soeprijanto; Anara, Siti Alicia; Azis, Ahmad Rifky
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

Batik is one of the industrial potentials of Indonesia, which is experiencing rapid growth in various regions. Besides providing economic benefits, the batik industry also harms the environment. One of the processing methods that can be used as a solution is the Constructed Wetland (CW) method. This method is appropriate because it doesn't require high processing and maintenance costs and the process is simple and uses local resources. The purpose of this study was to measure the efficiency of batik industry wastewater treatment in reducing the pollutant load with the CW system so that the waste discharged into the environment can be declared safe. The parameters studied were COD, and TSS with the Hydraulic Retention Time for 10, 20, and 30 days. The results of the analysis of the initial content obtained a COD value of 1832,02 mg/L and a TSS value of 300 mg/L. Based on the results of the research that has been done, the results obtained for the removal of COD and TSS at 10 days HRT were 92.698% and 83.33%, then HRT 20 days of 94.603% and 86.67%. and then HRT 30 days of 96.138 % and 93.33%.
Kata Pengantar dan Daftar Panitia SNTKK 2023 2023, Editor SNTKK
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

Kata Pengantar dan Daftar Panitia SNTKK 2023
Prediksi Data Kesetimbangan Cair-cair Pada Sistem Terner Air + Asam Laktat + Pelarut Menggunakan Model UNIFAC-DMD Sugiarto, Kurniawan Wahyu; Honora, Faradiba; Altway, Saidah; Zuchrillah, Daril Ridho
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

Industrial lactic acid can be produced via chemical synthesis and fermentative production. However, due to the environmental issue and consumer preference, fermentative production of lactic acid is preferable. Lactic acid is used in many industries, including food processing, pharmaceutical, chemical and cosmetic industries. Various methods have been developed for separating lactic acid from its aqueous solution, and liquid-liquid extraction is considered as the most promising and efficient method. Liquid-liquid equilibrium data provide the basis for a rational design and optimal extraction operation. The objective of this study is to predict the liquid-liquid equilibria in the ternary systems of water+ lactic acid + solvent (MIBK, 2-pentanol, 1-hexanol) at temperatures of 303.15 K and 313.15 K and atmospheric pressure (101.3 kPa) using the UNIFAC-Dortmund (DMD) model. The distribution coefficients and separation factors were determined to evaluate the extraction performance of lactic acid. The extraction performance was in the order of MIBK > 1-hexanol > 2-pentanol. The prediction of lactic acid + water + MIBK system at 303,15 K was also compared with the experimental data with the RMSD 2,5 %. This result represented that UNIFAC-DMD was a reliable model for the prediction of liquid-liquid equilibria of system involving lactic acid.
Thermal Stability Test and Formulation of Sodium Lignosulfonate with Isoamyl Alcohol as EOR Surfactant Andriani, Anisa Novi; Azis, Muhammad Mufti; Purwono, Suryo
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

Sodium lignosulfonate (SLS) is a promising low-cost surfactant that can be prepared from biomass. There has been large interest to utilize SLS as a chemical Enhanced Oil Recovery (EOR) surfactant. For that purpose, SLS is often mixed with other chemicals such as alcohols. The aim of this study was to find the best formulation of mixed-surfactant and to perform its thermal stability. The resulting mixed-surfactant was then characterized with variety of tests: aqueous stability, phase behavior, and IFT values. We found that a mixture that consists of 50 wt.% SLS, 30 wt.% Isoamyl Alcohol, and 20 wt.% of Palm Fatty Acid Distillate (PFAD) soap gave ultralow IFT at 1.864 × 10-3 mN/m. Phase behavior test shows that 1 wt% of mixed-surfactant formed a Winsor Type III. Subsequently, thermal stability test was conducted at 70°C for 90 days. The results showed that the IFT value fluctuates within the range of 10-3 mN/m for the first three weeks. After three weeks, the IFT values tend to increase to 10-2 mN/m until the end of the test. Hence, although ultralow IFT was achieved in the beginning of the test, further study is needed to improve the long-term stability of the present mixed-surfactant
Pengaruh Massa Bioadsorben dari Klobot Jagung Terhadap Penurunan Kandungan Asam Lemak Bebas (FFA), Nilai Peroksida (PV) dan Tingkat Warna Dalam Minyak Sawit Mentah (CPO) Yustinah, Yustinah; Susanty, Susanty; Hendrawati, Tri Yuni; Fithriyah, Nurul Hidayati; Cardosh, Syafira R
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

Indonesia as an agricultural country, produces many agricultural products. In addition to agricultural products, agricultural waste is also generated throughout the year. This agricultural waste is still underutilized. One of the efforts to utilize agricultural waste is to process agricultural waste into bioadsorbent. This study aims to study the effect of the mass of bioadsorbent from agricultural waste, namely corn husks on reducing levels of free fatty acids (FFA), peroxide value (PV) and color in crude palm oil (CPO). Clean corn husks are then mashed, after which it is reacted with NaOH to remove the lignin content and neutralized with HCl, so that a bioadsorbent is obtained. Crude palm oil is heated to 80 oC, then mixed with 2 to 10 grams of bioadsorbent according to the variables used. The mixture was stirred at 500 rpm for one hour, and the temperature was maintained at 80 oC. After the adsorption process is complete, the mixture is filtered using a vacuum pump and the filtrate is taken. The filtrate obtained was analyzed for free fatty acid content, peroxide value and color. The research resulted in the more mass of bioadsorbent used, the greater the decrease in free fatty acid levels, peroxide value and color. Using 10 g of bioadsorbent can reduce FFA levels by 41.29%, reduce PV values by 54.96% and reduce color absorbance by 29.06%.

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