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All Journal Teknika: Jurnal Sains dan Teknologi Science and Technology Indonesia Jurnal Inovasi Hasil Pengabdian Masyarakat (JIPEMAS) Indonesian Journal of Engineering and Science (IJES)
Barlin Oemar
Department Of Mechanical Engineering, Faculty Of Engineering, Universitas Sriwijaya, Indralaya-30662, South Sumatera, Indonesia
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Other

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Optimization of activated carbon yield using the Taguchi method in synthesizing activated carbon from wood charcoal Barlin Barlin; Wei-Chin Chang
Jurnal Teknika Vol 17, No 1 (2021): Available Online in June 2021
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/tjst.v17i1.10321

Abstract

Judul: Optimalisasi rendemen karbon aktif menggunakan metode Taguchi dalam mensintesis karbon aktif dari arang kayu Title: Optimization of activated carbon yield using the Taguchi method in synthesizing activated carbon from wood charcoalArang kayu telah digunakan sebagai bahan baku pembuatan karbon aktif. Tujuan penelitian ini adalah untuk mendapatkan parameter signifikan dan optimal dalam proses preparasi karbon aktif dengan product yield yang tinggi. Karbon aktif telah dibuat dengan metode impregnation-activation (IA). Dalam proses ini, kalium hidroksida telah difungsikan sebagai reagen kimia. Tiga parameter proses yang divariasikan yaitu konsentrasi KOH (25-75%), suhu aktivasi (600-850°C), dan waktu aktivasi (1-2,5 jam). Rancangan eksperimen didesain dengan metode Taguchi. Dalam analisis, Signal to noise (S/N) ratio digunakan untuk mendapatkan level optimal, sedangkan parameter proses yang paling signifikan diidentifikasi dengan analisis ANOVA. Berdasarkan Taguchi orthogonal array design, multiple regression model dikembangkan untuk menunjukkan hubungan antara parameter proses dengan activated carbon yield (AC yield). Berdasarkan hasil tersebut, suhu aktivasi merupakan parameter yang paling signifikan untuk memaksimalkan AC yield, sedangkan ondisi optimum pembuatan karbon aktif adalah konsentrasi KOH 50 wt. %, suhu aktivasi 700 ° C, dan waktu aktivasi 2,5 jam. Activated carbon yield optimum berdasarkan prediksi dan hasil eksperimen adalah 87, 3 dan 67, 6%. Sebagai kesimpulan, hasil-hasil dari penelitian ini menunjukkan bahwa metode Taguchi memiliki efektivitas dalam proses sintesis karbon aktif. Wood charcoal (WC) was used as raw material for synthesizing activated carbon (AC). This research aims to determine optimum preparation conditions for activated carbon. The wood charcoal activated carbon (ACWC) was prepared by the impregnation-activation (IA) method. In this process, potassium hydroxide (KOH) has functioned as a chemical reagent. Three process parameters were varied such as KOH concentration (25-75 wt. %), activation temperature (600-850 °C), and activation time (1-2.5 hours). The design of the experiment was arranged with the Taguchi method. For analysis, the signal to noise (S/N) ratio was utilized to find the optimal levels, while the most significant process parameter was identified via ANOVA analysis. The multiple regression model was developed to associate the process parameters with activated carbon yield (AC yield) based on the Taguchi orthogonal array design. According to the results, activation temperature was the most significant parameter for maximizing the AC yield. The optimum conditions for preparing activated carbon were found as follows: KOH concentration of 50 wt. %, activation temperature of 700 °C, and activation time of 2.5 hours. The predicted and experimental results for optimum activated carbon yield were 87.3% and 67.6 %, respectively. In conclusion, the results of this study indicated that the Taguchi optimization method has effectiveness in the synthesis of activated carbon.
THE EFFECT OF BLADE CURVATURE ANGLE OF SAVONIUS WIND TURBINE L-TYPE ON THE PERFORMANCE Barlin Barlin; Chandra Octavian Pratama; Krerkiat Sasiwimonrit
Indonesian Journal of Engineering and Science (IJES) Vol. 2 No. 1 (2021): Table of Contents
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/ijes.v2i1.13

Abstract

The wind is a renewable energy source (alternative energy) as a substitute for the dwindling fossil fuel. L-type Savonius wind turbine is a technology that is widely used to convert wind energy into mechanical because its construction is simple and cheap. The disadvantage of this turbine is having a lower efficiency than other types of wind turbines. Modification of the curvature of the L-type Savonius wind turbine blade is assumed can improve its performance because it affects the direction and magnitude of wind and wheel velocity, consequence impact to power. Thus, the blade angle is interesting to review. There are three angles of blade studied: 30º, 45º, and 60º. Based on results, the blade angle influences the performance of the L-type Savonius wind turbine, where the 45º blade angle produced better performance than 30º and 60º.
Penerapan alat minimum quantity lubrication pada pemberian cairan pemotongan sebagai upaya pemesinan ramah lingkungan Muhammad Yanis; Al Antoni Akhmad; Barlin Barlin; Aneka Firdaus; Nova Yuliasari
Jurnal Inovasi Hasil Pengabdian Masyarakat (JIPEMAS) Vol 5, No 2 (2022): Jurnal Inovasi Hasil Pengabdian Masyarakat (JIPEMAS)
Publisher : University of Islam Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33474/jipemas.v5i2.13957

Abstract

ASSESSMENT MATERIAL SELECTION FOR CHAIN - SUBMERGED SCRAPPER CONVEYOR Gunawan Gunawan; Amir Arifin; Irsyadi Yani; M. A. Ade Saputra; Barlin Oemar; Zulkarnain Ali Leman; Dendy Adanta; Akbar Teguh Prakoso
Indonesian Journal of Engineering and Science Vol. 4 No. 1 (2023): Table of Content
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/ijes.v4i1.92

Abstract

Chain–submerged scrapper conveyor bottom ash handling in the petrochemical industry has failed several times and was repaired with AISI 420, which can only operate for three months. AISI 420 is recommended in applications requiring moderate corrosion resistance, high hardness, excellent wear resistance, and good edge retention in cutting surfaces. The initial cracks and fractures occur in the pin-link joint hole, which causes chain failure. Some evaluation has been performed for both as-received and failed links. It can be concluded that chain link failure occurs due to fatigue failure with low-stress levels. Microstructure observation, XRD, and hardness properties showed no significant difference in both as-received and failed links. Since the operating conditions of the chain are in a corrosive environment, experiencing dynamic loading and working temperatures between 23 ºC and 60 ºC, the selection of HSL materials such as AISI 4140 should be considered.
Experimental Investigation on Thermophysical and Stability Properties of TiO2/Virgin Coconut Oil Nanofluid Barlin Oemar; Amir Arifin; David Bahrin; Astuti; Dwiki Ramadhan; Muhammad Abil Rifqy; Muhammad Reza Tinambunan
Science and Technology Indonesia Vol. 8 No. 2 (2023): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2023.8.2.178-183

Abstract

This paper shows experimental study results on the thermophysical and stability of nanofluids of Titanium oxide (TiO2) dispersed in high-purity of Virgin Coconut Oil (VCO). Nanofluid samples that functioned as a lubricant were prepared by a two-step preparation method at different volume fractions (0.1, 0.3, and 0.5 vol.%) and different temperatures (28, 40, and 100°C). The dynamic viscosity and density were performed using Falling Ball Viscometer and Pycnometer, respectively. The sedimentation photograph method using a digital camera was applied to analyze the stability. A maximum dynamic viscosity enhancement of 62.78% was recorded for TiO2/VCO nanofluid with 0.5% nanoparticle volume fraction and at the temperature of 100°C). Whereas, the highest density improvement was recorded for TiO2/VCO nanofluid with 0.5% nanoparticle volume fraction. Freshly prepared nanofluids did not show any significant change in stability. However, a trivial phase separation appeared in the samples after 8 days. The results indicated that adding TiO2 nanoparticles increased the dynamic viscosity and density. It can be concluded that the volume in fraction has the effect to enhance the thermophysical stability of TiO2/VCO nanofluids.
Co-Authors Adanta, Dendy Akbar Teguh Prakoso Al Antoni Akhmad Amir Arifin Amir Arifin Aneka Firdaus Astuti Chandra Octavian Pratama David Bahrin Dwiki Ramadhan Gunawan Gunawan Irsyadi Yani Krerkiat Sasiwimonrit M. A. Ade Saputra Muhammad Abil Rifqy Muhammad Reza Tinambunan Muhammad Yanis Nova Yuliasari Wei-Chin Chang Zulkarnain Ali Leman