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All Journal Perwira Journal of Science and Engineering (PJSE) Asian Journal Science and Engineering Jurnal Pendidikan Teknik Mesin
Zulfikar Alief Utama, Iqbal
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Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Mechanical Engineering

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Analysis of Bioethanol Purification with Two Outlet Distillation System Iqbal Zulfikar; Bambang Irawan
Asian Journal Science and Engineering Vol 2 No 1 (2023): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/ajse.v2i1.761

Abstract

The purpose of this study is to analyzes of the process of purifying bioethanol produced by a distillation apparatus that uses two holes of different heights. The equipment used in this study is a distillation prototype tool which has two steam holes coming out of the vessel, with different height positions. The research method used is experimental. Data collection was based on the results of distillation experiments with the independent variable alcohol content in the solution, the dependent variable alcohol content resulting from the distillation process and the control variable is steam temperature and processing time. The results of the study were processed with statistics showing that the position of the holes affects the product resulting from the alcohol content in bioethanol, a high hole position will produce bioethanol with a greater alcohol content. The alcohol content in the solution that is put into the distillation vessel affects the distillation results, the greater the alcohol content, the greater the alcohol product. The interaction between the position of the holes and the alcohol content in the solution affects the amount of alcohol product in the bioethanol. input solution containing low alcohol cannot reach the distillation results of bioethanol with high alcohol content. Bioethanol through the top hole has a higher alcohol content than that through the bottom hole. The alcohol content in the solution affects the difference in the alcohol content produced between the upper and lower holes. Distillation can produce bioethanol with a high alcohol content of up to 96%, with a solution containing about 85% alcohol. This distillation process can be done privately so that everyone can make fuel for their own vehicles. Keywords: Bioethanol Purification, Distillation System, Purifying Bioethanol
ANALYSIS OF MECHANICAL CHARACTERISTICS OF TOOTH BUCKET EXCAVATOR BASED ON DIFFERENT GRADE LEVELS nurdin, akhmad; Zulfikar Alief Utama, Iqbal; Angger Prasetiyo, Bagus; Hidayat, Rosyidi; Paundra, Fajar; Kurniawan, Fajri; Yasmin, Dzikrina Salsabila; Muhyi, Abdul
Jurnal Pendidikan Teknik Mesin Vol. 25 No. 02 (2025): December 2025 (on going)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jptm.v25i02.33074

Abstract

The purpose of this study is to comprehend the microstructure and hardness value of three distinct tooth bucket manufacturers. Three manufacturers' excavator tooth buckets—Canada Grade, China Grade A, and China Grade C—are compared for their mechanical characteristics. Among the tests are the Vickers method for measuring hardness, optical microscopy for examining microstructure, and chemical composition analysis. According to the results, the primary elements in all three specimens—carbon, silicon, manganese, and chromium—meet the DIN Grade 25CrMo4 standard. The martensite phase, which gives the Canada product its hardness and resistance to deformation, dominates its microstructure. The China Grade C product, on the other hand, has a more prominent ferrite phase, which raises ductility while decreasing hardness. China Grade C (570.24 HVN) had the highest hardness test value, followed by China Grade A (517.67 HVN) and Canada (468.09 HVN). This demonstrates that while Canada excels at withstanding heavy loads without damage, China Grade C is better suited for applications needing high wear resistance. Users of heavy machinery can use this study as a scientific guide when choosing bucket nails based on operational requirements, including material toughness and wear.
Pengaruh Pasir Silika sebagai Filler pada Komposit Berpengikat Poliester teradap Karakteristik Komposit Zulfikar Alief Utama, Iqbal; Yusron Wijanarko, Zidan; Bagus Prasetiyo, Angger; Harwijayanti, Widyanita; Whonica
Perwira Journal of Science & Engineering Vol 6 No 1 (2026)
Publisher : Universitas Perwira Purbalingga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54199/nrkhw323

Abstract

Pertumbuhan jumlah manusia dan perkembangan pembangunan di berbagai wilayah di dunia mempengaruhi mobilisasi manusia yang membutuhkan kendaraan untuk berpindah tempat dalam memenuhi kebutuhan. Untuk memenuhi kebutuhan kendaraan di perlukan material body kendaraan dengan material yang memiliki ketahanan terhadap uji mekanis. Komposit merupakan material unggul dimana tailorability (kekuatan) bisa disesuaikan dengan kebutuhan. Komposit polimer pada bidang otomotif dikembangkan  dengan kualifikasi ketahanan bakar yang baik. Pengembangan komposit polimer dapat dilakukan dengan filler sehingga menghasilkan material yang lebih unggul dan menghasilkan kinerja yang tinggi. Pasir Silika merupakan Geomaterial dengan istilah pasir kuarsa, pasir putih atau pasir industri. Secara umum pasir silika terdiri dari silikon dioksida ( SiO2 ). Pasir Silika memiliki sifat keunggulan apabila digunakan sebagai material manufaktur diantaranya adalah keras, memiliki titik leleh yang tinggi/ tahan panas, tahan terhadap tekanan dan abrasi. Resin yukalac 157 BQTN merupakan polimer jenis termosted poliester biasa diaplikasikan pada suhu kerja mencapai 79 ˚C. dengan berat jenis 1,3-1,4 kg/cm3.Penelitian ini bertujuan untuk mengetahui karakteristik komposit geopolimer antara pasir silica dan polimer yukalac 157 BQTN terhadap kekuatan lentur dan kekuatan tarik.
Co-Authors Angger Bagus Prasetiyo Angger Prasetiyo, Bagus Bambang Irawan Fajri Kurniawan Harwijayanti, Widyanita Hidayat, Rosyidi Muhyi, Abdul Nurdin, Akhmad Paundra, Fajar Whonica Yasmin, Dzikrina Salsabila Zidan Yusron Wijanarko