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All Journal JURNAL PERTAMBANGAN Jurnal Sains dan Teknologi Science and Technology Indonesia JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY AKSIOLOGIYA : Jurnal Pengabdian Kepada Masyarakat IKRA-ITH ABDIMAS Jurnal Teknik Kimia Indonesian Journal of Engineering and Science (IJES) Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil Journal of Engineering and Technological Sciences
Riady, M.I.
Department Of Mechanical Engineering, Sriwijaya University, Palembang, 30662, South Sumatera, Indonesia
Aerospace Engineering Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Transportation

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Pemanfaatan Tar Residu Bio-Oil Limbah Tempurung Kelapa dengan Aditif Biochar dan Gondorukem Menjadi Bio-Aspal Afrah, Bazlina Dawami; Delli Saputri, Jasmine Fadhilah; Ramona Putri, Tiara Maharani; Ihsan Riady, Muhammad; Muzzaki, Ahmad Nabil
Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil Vol. 14 No. 1 (2025): Cantilever
Publisher : Department of Civil Engineering and Planning, Faculty of Engineering, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35139/cantilever.v14i1.378

Abstract

Indonesia still faces critical infrastructure issues, especially in road maintenance, with 31.9% of roads damaged and 15.9% severely damaged in 2021. It caused by the high production costs to achieve the best asphalt quality and the dwindling availability of petroleum raw materials. Without action, this could worsen infrastructure and disrupt connectivity, requiring a timely and effective solution. Therefore, there is a need for alternative renewable materials and simple methods of production. This research aims to obtain a bio-asphalt product that can compete with oil asphalt, using the main ingredient of tar (bio-oil) from coconut shell pyrolysis as well as additives in the form of biochar and gondorukem. This research was conducted through three stages: pyrolysis, distillation, and mixing. The pyrolysis stage was carried out at a temperature range of 300-400oC to obtain bio-oil. The distillation stage is carried out at 250oC to obtain tar. The mixture consists of 30% tar and 70% petroleum asphalt. The variations used are the type of additive and the percentage composition of the additive so that the most optimal bio-asphalt formulation is obtained. The Bio-asphalt superior product almost meets the five existing parameters, with a penetration value of 60/70, ductility of 132.33 mm, soft point of 52.8oC and flash point of 254oC, the specific gravity that does not meet is 0.965 gr/cc. Therefore, this research is a solution in the production of economical asphalt so that the welfare of an evenly distributed society in the field of infrastructure can be achieved.
Potensi Pemanfaatan Asap Cair (Liquid Smoke) Menjadi Bio-Disinfectant dari Limbah Kayu Karet dan Kayu Akasia Afrah, Bazlina; Ihsan Riyadi, Muhammad; Cundari, Lia; Rizki, Fadhilah; Ramadhanty, Rizky Vasya; Oktarinasari, Eva
JST (Jurnal Sains dan Teknologi) Vol. 13 No. 1 (2024): April
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jstundiksha.v13i1.66832

Abstract

Bio-disinfectant dari asap cair adalah alternatif untuk menggantikan maraknya penggunaan disinfektan kimia yang menyebabkan efek terhadap kesehatan karena meninggalkan residu berbahaya. Asap cair dengan dua variasi bahan baku biomassa, yaitu limbah kayu karet dan kayu akasia merupakan subjek penelitian ini. Tujuan penelitian ini adalah menganalisis potensi asap cair dari variasi jenis biomassa sebagai bio-disinfectant secara eksperimental melalui pendekatan analisis karakteristik serta komposisi dari bio-disinfectant yang dihasilkan. Penelitian ini merupakan penelitian eksperimental. Pengumpulan data dilakukan pada setiap alur tahapan penelitian, meliputi proses pirolisis, distilasi, dan adsorpsi dengan variasi bahan baku dan grade asap cair sebagai variabel penelitian. Analisis karakteristik yang dilakukan meliputi pH, viskositas, densitas, kadar asam, dan fenol. Hasil analisis karakteristik menunjukkan asap cair kayu karet grade 1 memenuhi standar asap cair Jepang dengan pH terendah 2,41 dan nilai asam tertinggi 0,19. Berdasarkan hasil uji karakteristik dan komposisi secara keseluruhan diketahui bahwa sampel asap cair berbahan baku kayu akasia grade 1 merupakan asap cair dengan kualitas terbaik yang berpotensi menjadi bio-disinfectant. Kayu akasia grade 1 memiliki pH 3,26, nilai asam 0,11, serta nilai viskositas kinematik sebesar 4,3248 cSt. Uji fenol dengan metode spektrofotometri menunjukkan bahwa asap cair kayu akasia merupakan sampel dengan nilai fenol tertinggi yaitu 2527,6 ppm. Komposisi komponen kimia pada asap cair kayu akasia grade 1 berdasarkan hasil uji GC-MS meliputi senyawa fenol, phosponic acid, dan carbamic acid yang berguna dalam proses disinfeksi mikroorganisme patogen.
Analysis of Liquid Smoke Grade Characteristics from Coconut Shells and Palm Kernel Shell Waste Through a Slow Pyrolysis Process Afrah, Bazlina Dawami; Riady, M. Ihsan; Payomthip, Panida; Ramadhanty, Rizky Vasya; Rizki, Fadhilah; Alfayyadh, Muhammad Luthfi
Journal of Engineering and Technological Sciences Vol. 56 No. 4 (2024)
Publisher : Directorate for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2024.56.4.10

Abstract

This research was motivated by the abundance of biomass plantations in Indonesia. Accumulated biomass waste will cause environmental problems. Biomass processing can resolve this issue, by producing functionally and economically valuable products. The purpose of this research was to increase the value of biomass by processing it as liquid smoke through pyrolysis and then proceeding to the purification stage. The purification method applied in this research was a combination of distillation and adsorption processes using natural zeolite. The variables of this research were: two types of biomass, namely coconut shells and palm kernel shells, and liquid smoke grade variations. The analysis parameters were: pH, viscosity, density, acid content, and phenol analysis as well as GC-MS. The characteristics analysis results showed that all liquid smoke samples met the Japanese liquid smoke standard. Based on pH, acid, and phenol analysis, the liquid smoke from the coconut shells sample had better quality compared to the liquid smoke from palm kernel shells, namely with pH 2.36, acid content 0.26 mg/mL, and phenol 2,368.75 ppm. The GC-MS test results indicated that grade-1 liquid smoke from both samples contained antibacterial compounds, such as phosphonic acid, formic acid, and carbamic acid, which have the potential to inhibit bacterial growth.
MICROSTRUCTURAL EVOLUTION AND MECHANICAL PERFORMANCE OF SMAW DISSIMILAR WELDS BETWEEN ASTM A36 AND AISI 316 WITH E316-16 ELECTRODE AT DIFFERENT WELDING CURRENTS Nurhabibah Paramitha Eka Utami; Chandra, Hendri; Pratiwi, Diah Kusuma; Ellyanie, Ellyanie; Astuti, Astuti; Prastyanto, Wisnu Hafiz; Riady, Muhammad Ihsan; Santoso, Dyos; Saputra, M. A. Ade
Indonesian Journal of Engineering and Science Vol. 6 No. 3 (2025): Table of Contents: In progress
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/ijes.v6i3.201

Abstract

This study investigates the effect of welding current on the microstructural evolution and mechanical performance of Shielded Metal Arc Welded (SMAW) dissimilar lap joints between ASTM A36 carbon steel and AISI 316 stainless steel using an E316-16 electrode. Welding was performed at three different currents, namely 60 A, 70 A, and 80 A, to evaluate their influence on microstructure, hardness distribution, and impact toughness. Microstructural characterization was conducted using optical microscopy to examine phase formation and grain morphology in the weld metal and heat-affected zone (HAZ). Mechanical properties were evaluated through Vickers hardness testing and Charpy impact testing. The results show that increasing welding current leads to higher heat input, promoting the formation of finer pearlite and acicular ferrite in the weld metal, along with an expansion of the HAZ. These microstructural changes resulted in increased hardness, with the highest average hardness value of 343.32 HV observed in the weld metal at 80 A. Impact test results indicated that higher welding currents enhanced impact toughness due to the interlocking morphology of acicular ferrite, which effectively retards crack propagation. However, localized grain coarsening was observed near the fusion boundary, particularly within the HAZ. Overall, a welding current of 80 A provided the most favorable combination of hardness and impact toughness, indicating its suitability for optimizing the mechanical performance of SMAW dissimilar welded joints between ASTM A36 and AISI 316.
Co-Authors Agung D. Aryansyah Agung Dwi Aryansyah Ahmad Julianto Al-Faiz, Ahmad Haris Alfayyadh, Muhammad Luthfi Ariva, Helmi Aryansyah, Agung Dwi Astuti - Bazlina Dawami Afrah Cundari, Lia Delli Saputri, Jasmine Fadhilah Diah Kusuma Pratiwi Dwi Anggraini Dyos Santoso E. Oktarinasari Edda Anastasia Oktawina Ellyanie Ellyanie Ervega, Frandiaz Agustan Fitri Hadiah Fitri, Rizza Fadillah Gayatri, Rianyza Hendri Chandra Jihan Utami Julianto, Ahmad Juliet P. Arsadha Juliet Patricia Arsadha Leily Nurul Komariah Lia Cundari Miftahurrizka Afrah Muhammad A. Rizan Muhammad Andzar Rizan Muhammad Yori Pratama Muzzaki, Ahmad Nabil Nabilla Tania Rahma Novia Sumardi Novia Sumardi Nurhabibah Paramitha Eka Utami Oktarinasari, E. Oktarinasari, Eva Payomthip, Panida Prastyanto, Wisnu Hafiz Pratiwi, Siti Istiani Putri, R. W. Putri, T. M. R. R. Rimadhina Ramadhanty, Rizky Vasya Ramona Putri, Tiara Maharani Rizki, Fadhilah Rupinder Rupinder Saputra, M. A. Ade Saputri, J. F. D. Siti Istiani Pratiwi Siti Istiani Pratiwi Tuti Indah Sari Tuti Indah Sari, Tuti Indah Zalman, Arjun