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Alfian Noviyanto
Universitas Mercu Buana
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Other

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Stabilitasi Fasa Kalsium Pirofospat Pada Temperatur Tinggi Dengan Penambahan Zirkonia Huda, Ihsanul; Kusumaningrum, Retno; Sukmarani, Galuh; Noviyanto, Alfian
Syntax Literate Jurnal Ilmiah Indonesia
Publisher : CV. Ridwan Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1608.726 KB) | DOI: 10.36418/syntax-literate.v5i5.1134

Abstract

Kalsium Pirofospat adalah biomaterial yang sangat baik untuk digunakan sebagai pengganti tulang atau gigi yang rusak ataupun retak. Kalsium Pirofospat bersifat biokompatibel, bioaktif dan memiliki komposisi kimia yang mendekati komposisi pada tulang dan gigi manusia. Namun biomaterial ini memiliki kekurangan yaitu sifat mekanisnya yang rendah apabila digunakan untuk menerima beban yang berat. Peningkatan sifat mekanik kalsium pirofospat dapat dilakukan dengan menambahkan material zirkon. Oleh karena itu, pada penelitian ini dilakukan kajian perubahan fasa kalsium pirofospat dengan penambahan zirkon pada temperatur tinggi. Komposisi zirkonia yang ditambahkan sebesar 5% dan 10% (w/w). Pencampuran kalsium pirofosfat dilakukan menggunakan High Energy Milling (HEM) dengan Ball Powder Ratio (BPR) sebesar 5:1 selama 30 menit. Campuran selanjutnya dipanaskan pada temperatur 1000 selama 60 menit. Hasil karakterisasi menggunakan XRD menunjukan bahwa perlakuan pemanasan dapat mendekomposisi kalsium pirofosfat dan terbentuknya CaZrO3. Pemanasan juga menyebabkan ukuran partikel semakin besar. Hasil SEM menunjukkan ukuran mikrostruktur CPP TA yang semula 590±43nm menjadi CPP TAZ5 1,212±268µm dan CPP TAZ10 1,324±384µm. Sedangkan untuk CPP TB yang semula 455±32nm menjadi CPP TBZ5 1,112±546µm dan CPP TBZ10 1,123±392µm. Kata kunci: Kalsium Pirofospat, Zirkonia, High Energy Milling
Influence of Al and Cu Doping on the Structure, Morphology, and Optical Properties of ZnO Thin Film Faras Afifah; Arif Tjahjono; Aga Ridhova; Pramitha Yuniar Diah Maulida; Alfian Noviyanto; Didik Aryanto
Indonesian Journal of Chemistry Vol 23, No 1 (2023)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.73234

Abstract

In this study, ZnO thin films doped with Al (AZO) and Cu (CZO) were fabricated on a glass substrate via sol-gel spin coating. The influence of 1 atomic % Al and Cu doping on the structure, morphology, as well as optical properties of ZnO thin film was then analyzed with X-ray diffraction (XRD), atomic force microscopy (AFM), and UV-Vis spectroscopy. XRD analysis revealed that all samples possessed hexagonal wurtzite crystal structures with 3 to 4 preferred orientations. Al and Cu doping caused a decrease in crystal size, while the lattice strain (e) and dislocation density (ρ) were increased. AFM indicated that Al and Cu doping reduced the surface roughness of the ZnO thin film. Optical measurement showed that all samples exhibited high transmittance (> 80%) in the visible light region. Transmittance was reduced after doping, while the band gaps for ZnO, AZO, and CZO thin films are 3.26, 3.28, and 3.23 eV. This study showed that an addition of 1 atomic % transition metal (Al and Cu) greatly influences the structure, morphology, and optical properties of ZnO thin film.
Optimized Synthesis of FeNi/TiO2 Green Nanocatalyst for High-Quality Liquid Fuel Production via Mild Pyrolysis Riny Yolandha Parapat; Muhamad Firmansyah Rizkiawan Putra; Zamaludin Zamaludin; Didin Agustian Permadi; Imam Aschuri; Yuono Yuono; Alfian Noviyanto; Michael Schwarze; Reinhard Schomäcker
Jurnal Kimia Sains dan Aplikasi Vol 26, No 10 (2023): Volume 26 Issue 10 Year 2023
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.26.10.391-403

Abstract

In sustainable energy improvement, the strategic design of economical nanocatalysts has emerged as a pivotal pathway, notably within intricate processes such as asphalt pyrolysis. This study presents a new endeavor, conceptualizing a non-precious metal nanocatalyst FeNi deposited on TiO2, synthesized through an environmentally conscious green synthesis methodology employing mangosteen peel extract as a sustainable reductant. Asphalt, the most complex compound, is used as the pyrolyzed material to measure the activity of nanocatalysts in mild pyrolysis. In this study, the synthesis of the nanocatalyst and pyrolisis are optimized. The research outcomes reflect a notable work towards efficiency enhancement. Initial investigations showcased the highest values before optimization for nanocatalyst synthesis, oil yield, and calorific value, which are 63.23%, 50.78%, and 10684 cal/g, respectively. However, these values increase significantly after optimization to 68.44%, 53.72%, and 10775 cal/g, respectively. Careful validation endeavors have underscored the closeness, manifesting slight errors of 2.52%, 1.86%, and 0.36% for catalyst yield, oil yield, and calorific value, respectively. This validation features the reliability of the research findings. Intriguingly, the GC-MS analysis establishes compelling parallels in composition between the derived product and conventional diesel fuel. The minimal errors and the analogous composition to diesel fuel present a promising trajectory. The results obtained from this study contribute to the development of greener and more efficient energy production technologies, paving the way for a sustainable and eco-friendly approach to utilizing energy resources.
PENGARUH AMPLITUDO DAN WAKTU SONIKASI TERHADAP PENURUNAN REFLECTION LOSS PADA SINTESIS MATERIAL ABSORBER BERBASIS PASIR BESI BANTEN UNTUK APLIKASI PESAWAT ANTI RADAR Erlina Yustanti; Agung Trisdian; Alfian Noviyanto
JURNAL INTEGRASI PROSES Vol 13, No 1 (2024)
Publisher : JURNAL INTEGRASI PROSES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/jip.v13i1.24310

Abstract

Pada era industri 5.0 kebutuhan akan perangkat elektronik dan teknologi informasi berkembang sangat pesat. Rekayasa material untuk memenuhi kebutuhan pengguna dan perkembangan zaman melibatkan penggunaan gelombang elektromagnetik dari frekuensi rendah hingga ultra tinggi. Gelombang elektromagnetik banyak membantu dalam mendukung teknologi informasi, namun efek radiasi gelombang elektromagnetik sangat mengganggu kesehatan manusia, sehingga perlu dikembangkan bahan penyerap gelombang elektromagnetik. Pada penelitian ini dikembangkan material penyerap gelombang elektromagnetik berbasis muatan lokal pasir besi dari wilayah Banten. Barium heksaferit merupakan salah salah satu kandidat terbaik sebagai bahan baku untuk sintesis material penyerap gelombang mikro. Fe2O3 sebagai bahan baku barium heksaferit yang saat ini masih impor dapat digantikan fungsinya melalui penggunaan pasir besi lokal sebagai sumber Fe melalui teknik kopresipitasi menghasilkan FeCl3. Pada penelitian ini dilakukan kombinasi rekayasa melalui substitusi Mg-Al pada Fe untuk meningkatkan unjuk kinerja material anti radar yang lebih maksimal. Prinsip kopresipitasi pada penelitian ini mencampurkan BaCl2, FeCl3, MgCl2 dan AlCl3 dan diendapkan menggunakan NaOH 4M. Sampel hasil kopresipitasi disinter pada temperatur 1050°C selama 2 jam dilanjutkan sonikasi pada variasi 0, 3, dan 6 jam dengan variasi amplitudo 45 dan 55%. Karakterisasi komposisi unsur penyusun menggunakan XRF, dilanjutkan analisis struktur kristal menggunakan XRD. Ukuran partikel dikarakterisasi menggunakan particle size analyser (PSA) dan unjuk kinerja sebagai material anti radar menggunakan vector network analyzer (VNA). Penelitian ini menghasilkan FeCl3 sebagai bahan baku dengan kemurnian 41,65% menggantikan peran Fe2O3 dalam sintesis barium heksaferit. Material anti radar fase tunggal BaFe11,8Mg0,1Al0,1O19 berhasil disintesis dengan ukuran partikel 151 nm menghasilkan reflection loss -23,39 dB pada sonikasi 6 jam dengan amplitudo 55%. Material cerdas anti radar hasil penelitian ini dapat penyerapan gelombang elektromagnetik hingga 99,50% pada frekuensi X-Band 8-12 GHz.
Studi kelayakan ekonomi budidaya udang Litopenaeus vannamei: investasi nanobubble dalam meningkatkan produktivitas hasil panen Mauladani, Syifa; Rahmawati, Asri Ifani; Absirin, Muhammad Fahrurrozi; Saputra, Rizki Nugraha; Pratama, Aprian Fajar; Hidayatullah, Arief; Dwiarto, Agus; Syarif, Ahmad; Junaedi, Hardi; Cahyadi, Dedi; Saputra, Henry Kasman Hadi; Prabowo, Wendy Tri; Kartamiharja, Ujang Komarudin Asdani; Noviyanto, Alfian; Rochman, Nurul Taufiqu
Jurnal Akuakultur Indonesia Vol. 19 No. 1 (2020): Jurnal Akuakultur Indonesia
Publisher : Indonesian Society of Scientific Aquaculture (ISSA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (172.468 KB) | DOI: 10.19027/jai.19.1.30-38

Abstract

Tujuan dari penelitian ini adalah untuk menentukan kelayakan ekonomi usaha budidaya udang Litopenaeus vannamei dengan padat tebar 400 ekor/m2 selama 56 hari. Penelitian ini dilakukan pada kolam HDPE berukuran 800 m2 dengan menggunakan nanobubble dan non-nanobubble. Tingkat sintasan udang dan total panen pada kolam nanobubble berturut-turut meningkat mencapai 92% dan 2.255 kg. Parameter ekonomi yang dihitung terdiri dari Net Present Value (NPV), Internal Rate of Return (IRR), Payback Period (PP), Break Even Point (BEP), Benefit Cost Ratio (B/C Ratio), dan Sensitivity Analysis (SA). Biaya investasi total yang dibutuhkan untuk budidaya ini yaitu Rp 182.887.700. Pendapatan per siklus diestimasi mencapai Rp 157.850.000 dengan harga jual Rp 70.000 per kg udang. PP diestimasi setelah 4 siklus dengan NPV Rp 172.329.247 diproyeksikan setelah 10 siklus. Nilai IRR diestimasi sebesar 18% dan BEP diraih setelah produksi udang mencapai 7.058 kg. Rasio B/C diestimasi sebesar 1,26 dan SA menunjukkan bahwa produktivitas merupakan parameter yang paling berpengaruh dalam analisis ini. Berdasarkan hasil studi, budidaya udang menggunakan nanobubble layak diberi investasi.
Pengaruh Variasi Densitas Resin PVC terhadap Koefisien Gesek dan Mikrostruktur Komposit Kampas Rem Berbasis Serat Sabut Kelapa dan Serbuk Arang Pandriana, Aap; Alva, Sagir; Noviyanto, Alfian; Kurniawan, Kurniawan
Jurnal Rekayasa Energi dan Mekanika Vol 5, No 1 (2025): JREM
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/JREM.v5i1.50

Abstract

Penelitian ini bertujuan mengembangkan kampas rem ramah lingkungan berbahan komposit dengan menggunakan serat sabut kelapa sebagai penguat, serbuk arang batok kelapa sebagai pengisi, dan resin polivinil klorida (PVC) sebagai matriks. Proses pembuatan komposit dilakukan melalui metode hot press pada suhu 180 °C dan tekanan 7 MPa. Variasi resin PVC diperoleh dari perbedaan rasio pelarut cyclohexanone terhadap serbuk PVC, yaitu G01 (1,036 g/ml), G02 (1,069 g/ml), dan G03 (1,136 g/ml). Pengujian yang dilakukan meliputi pengukuran massa jenis, koefisien gesek, serta pengamatan struktur mikro menggunakan mikroskop optik. Hasil menunjukkan bahwa meningkatnya densitas resin sebanding dengan peningkatan massa jenis dan nilai koefisien gesek komposit. Spesimen G03 dengan densitas resin tertinggi menghasilkan nilai koefisien gesek tertinggi, yaitu 0,19. Hal ini menunjukkan bahwa kekuatan ikatan antar material semakin baik seiring peningkatan kandungan resin. Pengamatan struktur mikro memperlihatkan bahwa resin PVC lebih merata dan menyelimuti serat dengan lebih baik pada spesimen G03, yang mengindikasikan distribusi material yang lebih homogen dan ikatan antar fase yang lebih kuat. Hasil pengujian menunjukkan bahwa koefisien gesek meningkat seiring dengan peningkatan kandungan resin dan spesimen komposit G03 masuk dalam standar SAE J661-1997. (0,14–0,27), kondisi ini diduga disebabkan oleh pengujian yang dilakukan pada temperatur rendah. Secara keseluruhan, komposit ini memiliki potensi untuk digunakan sebagai kampas rem non-asbes yang aman, ringan, dan memiliki sifat mekanik serta mikrostruktur yang mendukung performa pengereman yang baik.
A Review : The Effect of Nanoparticles in Vegetable Oil on Surface Roughness in Machining Processes Pratiwi, Ayu; Noviyanto, Alfian
Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 15, No 01 (2026)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jtm.v15i01.36830

Abstract

The use of mineral oil based and synthetic coolants in machining processes remains dominant, despite their negative impacts on the environment and occupational health. Vegetable oils have emerged as an environment friendly alternative due to their biodegradable, non toxic properties, and renewable sources. However, thermal and tribological limitations restrict their performance under extreme conditions. To address this, various studies have investigated the addition of nanoparticles to vegetable oils to form nanofluids with improved lubrication and cooling performance. Nanoparticles such as aluminum oxide (Al₂O₃), molybdenum disulfide (MoS₂), and graphene have been shown to enhance thermal conductivity, reduce friction, and form protective tribological layers. This literature review discusses the effect of the combination of vegetable oil and nanoparticles on surface roughness in machining processes. The results show that nanofluids can significantly reduce surface roughness, particularly in Minimum Quantity Lubrication (MQL) systems. The effectiveness of nanofluids is greatly influenced by the type, size, and concentration of nanoparticles, where the optimal concentration varies but remains within a certain range (e.g., 2.5% for Al₂O₃). This study emphasizes that the development of plant-based nanofluids is a strategic approach toward efficient, environment friendly, and sustainable machining.
Synthesis of Polystyrene Fiber Membranes Prepared by Electrospinning: Effect of AgNO3 on the Microstructure Hanifah Setyaning Budi; Akmal Zulfi; Lia Dwi Setyaningsih; Muhammad Fahroji; Ratih Amalia; Julia Angel; Bagas Haqi Arrosyid; Gugus Handika; Kurniawan Eko Saputro; Alfian Noviyanto; Yulianto Agung Rezeki
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 9, No 1 (2024): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v9i1.84601

Abstract

Polystyrene (PS) is commonly employed in insulation, packaging, filters, and medical equipment, with recent studies exploring its potential in fiber membrane production. The electrospinning technique is discussed to synthesize PS fiber membranes with high porosity and controllable diameter. Additionally, incorporating silver nitrate into PS composite fibers is explored for enhanced functionalities such as catalytic activity, high electrical conductivity, and antibacterial activity. However, PS composite fiber membranes with silver nitrate (AgNO3) metal variations are rarely observed. This research aims to modify the microstructure of PS fiber membranes produced using electrospinning by adding silver nitrate (AgNO3) with varying concentrations. PS-Ag fiber membranes are produced using N,N-dimethylformamide (DMF) solvent, which serves as a solvent and a reducing agent for Ag. The results show that the effect of Ag affected the diameter of the PS-Ag fiber membrane, with an average diameter of around 3.67 - 6.93 micrometers. Degradation occurred in these samples at a strong broadening peak near ~1300 cm-1 until ~1600 cm-1 from the Raman results. The FTIR results show that the wavelength of ~3500 cm-1 indicated the presence of OH. The presence of OH indicates that the PS-Ag fiber membrane has the potential for water filtration application
Activated carbon air filter and rubber seed oil approach from waste rubber seed shell for alternative fuel and improving air quality Dafit Feriyanto; Supaat Zakaria; Alfian Noviyanto; Nurato Nurato; Dedik Romahadi; Hadi Pranoto; Samir Sani Abdulmalik
SINERGI Vol. 30 No. 2 (2026)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2026.2.015

Abstract

Research related to rubber seed conversion to oil and activated carbon as filter media requires further exploration. Therefore, the main objective of this study to investigate the rubber seed oil as alternative energy and rubber seed Shell Activated Carbon (RSSAC). Thermo-chemical method conducted with separation process between the kernel and the shell. The process used temperatures of 550 and 600°C. Biodiesel was produced by a blending process using a frequency of 20kHz, temperature of 60oC and 2h holding time. In addition, the side product was converted into activated carbon through carbonization and activation using KOH. Air filter fabricated using three layers, where the top and bottom layers being non-woven and RSSAC in the middle. It compacted using hot-press method at temperature of 150°C for 60 s to produce an air filter media thickness of 3–5mm. The results show that there are several high compound concentrations i.e. CH4, aldehydes, and ketonestone. Several gases evolve, such as CO2, CO, CH4, H2O, ketone aldehyde, and HC. Microstructure analysis using Scanning Electron Microscope (SEM) of RSSAC shows that element C significantly increase up to 80%, while O, K, and Ca decreased up to 72%, 66% and 90%, respectively. RSSAC has a large surface area of 175.95m2/g, and it will have high effectiveness in improving indoor air quality (IAQ). This is indicated by the result of IAQ analysis where the humidity, temperature, CO, CO2, TVOC, and PM10 were lower than the acceptable limit of 70%, 27oC, 1000ppm, 10ppm, 3 ppm, and 0.15 mg/m3, respectively.
FAILURE ANALYSIS OF SCREW COMPRESSOR AND ITS MODIFICATIONS Aat Safaat; Alfian Noviyanto
International Journal of Innovation in Mechanical Engineering and Advanced Materials Vol. 3 No. 3 (2021)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/ijimeam.v3i3.12963

Abstract

Screw compressor is one of critical equipment at many industries. Therefore, its reliability and performance shall be maintained. One problem that often arises with screw compressors is the lubrication system. This study investigates the cause of the screw compressor failure and its modification to prevent failure in the future. The failure analysis of the screw compressor was successfully conducted using the fishbone analysis diagram and visual examination. The presence of water in the oil was found due to a change of oil color. The water content analysis showed that 6% of water was found in the oil in the third month. Indeed, the presence of water has a detrimental effect on the screw compressor part, showing that corrosion has occurred in the inner part of the screw ompressor element. We found the water source comes from the air due to high humidity. Therefore, modification in the air supply is needed to prevent water contamination in the oil. The air supply modification is done using dry air at the screw compressor outlet, flowing into the breather system. The modification results showed that the oil's water content decreased significantly from 6% to 0.0035%. In addition, the vibration that occurs decreases from 80 dB to 58 dB. This shows the effectiveness of the modification process to extend the life of the tool and maintain the plant's operational continuity.
Co-Authors Aat Safaat Absirin, Muhammad Fahrurrozi Aga Ridhova Agung Trisdian Agus Sukarto Wismogroho Agus Sukarto Wismogroho Agus Sukarto Wismogroho Agus Sukarto Wismogroho, Agus Sukarto Ahmad Syarif Akmal Zulfi Amal, Muhamad Ikhlasul Amirudin Wibowo Arif Tjahjono Arramel Arramel Ayu Pratiwi Ayu Pratiwi, Ayu Bagas Haqi Arrosyid Dafit Feriyanto Dedi Cahyadi Dedik Romahadi Desrilia Nursyifaulkhair Didik Aryanto Didik Aryanto Didin Agustian Permadi Dwiarto, Agus Erlina Yustanti Faisal Akbar Faras Afifah Fiqhi Fauzi Gugus Handika H. Hakim Hadi Pranoto Hanifah Setyaning Budi Hardi Junaedi Henry Kasmanhadi Saputra HIDAYATULLAH, ARIEF Huda, Ihsanul I. G. A. Arwati Ihsanul Huda Imam Aschuri Iwan Setiawan Julia Angel Kartamiharja, Ujang Komarudin Asdani Kurniawan Eko Saputro Kurniawan Kurniawan Leanddas Nurdiwijayanto Lia Dwi Setyaningsih Mahliga Dwi Rezky Putri Mauladani, Syifa Mi'raj Shabrin Jamil Mi'raj Shabrin Jamil Michael Schwarze Muhajirin Muhajirin Muhamad Firmansyah Rizkiawan Putra Muhammad Fahroji Nishimura, Toshiyuki Nurato Nurul Taufiqu Rochman Nurul Taufiqu Rochman Nurul Taufiqu Rochman Nurul Taufiqu Rochman Nurul Taufiqu Rochman Nurul Taufiqu Rochman Pandriana, Aap Pipit Fitriani Prabowo, Wendy Tri Pramitha Yuniar Diah Maulida Pratama, Aprian Fajar Rahmawati, Asri Ifani Ratih Amalia Reinhard Schomäcker Retno Kusumaningrum Riny Yolandha Parapat S. Hartati Sabrina Dahlizar Sagir Alva Samir Sani Abdulmalik Saputra, Rizki Nugraha Sri Harjanto Sukmarani, Galuh Sulthoni Akbar Supaat Zakaria T. Zakly Toto Sudiro Wahyu Bambang Widayatno Wahyu Bambang Widayatno Wahyu Bambang Widayatno, Wahyu Bambang Wisnu Ari Adi Yulianto Agung Rezeki Yuono Yuono Zamaludin Zamaludin