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All Journal JURNAL CRANKSHAFT Prosiding Simposium Nasional Rekayasa Aplikasi Perancangan dan Industri Abdi Teknoyasa Majalah Teknik Mesin
Riza, Ramzul Irham
Unknown Affiliation
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Studi Sifat Optik Nanomaterial SiO2 dengan Spektroslopi UV-Vis Riza, Ramzul Irham; Ngafwan, Ngafwan
JURNAL CRANKSHAFT Vol 8, No 1 (2025): Jurnal Crankshaft Vol.8 No.1 (2025)
Publisher : Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/cra.v8i1.14462

Abstract

Daya serap gelombang terhadap setiap nano material mempunyai nilai yang berbeda-beda. Hal ini dipengaruhi oleh beberapa factor mulai dari struktur mikro, gugus fungsi dan jenis perlakuan yang diberikan kepada nano material tersebut. Salah satu material yang memiliki potensi untuk menyerap gelombang dengan baik adalah SiO2 yang sudah mendapatkan perlakuan panas. Material tersebut di proses menggunakan High Energy Milling (HEM) untuk mencapai ukuran nano. Dalam prosesnya  material yang akan direkayasa ukuranya dimasukkan kedalam tabung yang berputar dan menghasilkan gaya sentrifugal. Rekaya Nanomaterial saat ini berkembang dengan pesat dan berkembang kedalam banyak bidang seperti bidang rekayasa struktrur, kesehatan dan energy. Dibidang energi, nanomaterial sangat berperan penting karena mempunyai energi lebih besar dari pada material ukuran biasa karena memiliki surface area yang besar. Energy band secara bertahap berubah terhadap orbital molekul. Umumnya Resistivitas elektrik mengalami kenaikan dengan berkurangnya ukuran partikel untuk melihat pengaruh karakteristik nanomaterial terhada daya serap energy dapat dilakukan dengan menggunakan uji UV-Vis.  Spektroskopi UV-Visible (UV-Vis) mengukur penyebaran dan penyerapan cahaya yang melewati sampel. Nanopartikel memiliki sifat optik unik yang sensitif terhadap ukuran, bentuk, konsentrasi, keadaan aglomerasi, dan indeks bias di dekat permukaan nanopartikel, yang menjadikan UV-Vis alat yang berharga untuk mengidentifikasi, mengkarakterisasi, dan mempelajari material nano.
The Effect of Reactant Compositions on The Microstructure of Ceramic Materials Formed by Combustion Synthesis Riza, Ramzul Irham; Riyadi, Tri Widodo Besar; Wijianto, W
Prosiding Simposium Nasional Rekayasa Aplikasi Perancangan dan Industri 2024: Prosiding Simposium Nasional Rekayasa Aplikasi Perancangan dan Industri
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

Ceramics have been attractive as advance materials for high temperature applications due to their advantages such as high modulus, high hardness, high melting temperature, and high corrosion resistance. Of a broad range of ceramics, titanium carbide and aluminide have developed into one of the most interesting ceramics since they have high strength and good wear resistance at elevated ceramic materials. Producing TiC-Al2O3 from economical material (TiO2) is less expensive than that from their elemental powders. The combustion synthesis (CS) process offers significant advantages to fabricate TiC-Al2O3 since it produces high exothermic reaction and takes a short processing time. The objective of this study was to explore the combustion synthesis of TiC-Al2O3 and investigate the effect of reactant compositions on the combustion process and microstructure of synthesized products. The combustion synthesis was carried out in a combustion chamber with an atmospheric condition. The ignition technique to initiate the CS was performed using an arc flame. The microstructure and mechanical properties of synthesized products were observed. The result of this research would benefit for producing a high performance ceramic material obtained from economical material with an efficient process.
PENERAPAN INSINERATOR RAMAH LINGKUNGAN UNTUK ATASI SAMPAH DI DESA GONILAN Riza, Ramzul Irham; Aklis, Nur; Sugiharto, Agung; Al-mu’tashim, Mas’ud Fajar; Kurnia, Dicky
Abdi Teknoyasa Vol. 6 No. 2 (2025): Volume 6, Nomor 2, Desember 2025
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

Desa Gonilan, Kecamatan Kartasura, Sukoharjo, merupakan kawasan padat penduduk yang didominasi mahasiswa, menghasilkan volume sampah mencapai 40 ton per bulan. Permasalahan utama adalah penumpukan sampah di Tempat Penampungan Sementara (TPS) yang melebihi kapasitas, menyebabkan bau tak sedap, pencemaran udara, dan potensi penyakit. Tujuan pengabdian ini adalah menerapkan teknologi tepat guna insinerator ramah lingkungan untuk mengurangi volume sampah secara signifikan dan meningkatkan kesadaran masyarakat. Mitra pengabdian adalah Tim Pengelolaan Sampah Mandiri (P2SM) RW X Desa Gonilan. Metode yang digunakan meliputi analisis kondisi eksisting, perancangan dan pembuatan insinerator, sosialisasi, serta pendampingan operasional. Hasil menunjukkan bahwa insinerator berdimensi 50x50x80 cm dengan suhu operasional 800-900°C mampu mereduksi volume sampah hingga lebih dari 90%. Residu abu nantinya dapat dimanfaatkan masyarakat untuk membuat paving blok, menambah nilai ekonomi. Partisipasi aktif masyarakat melalui P2SM dalam penyediaan infrastruktur dan pengoperasian alat menjadi kunci keberhasilan, membangun rasa kepemilikan dan kemandirian. Makna hasil ini adalah terciptanya model pengelolaan sampah berkelanjutan berbasis komunitas yang mengintegrasikan solusi teknis dengan pemberdayaan sosial, menjadikan Desa Gonilan sebagai role model bagi desa lain.
STRUCTURAL AND OPTICAL CHARACTERIZATION OF HEAT-TREATED SIC PARTICLES DERIVED FROM RICE HUSK ASH FOR PHOTOVOLTAIC Riza, Ramzul Irham; Ngafwan; Masyrukan; Krisnoadi, Ridwan; Kurniawan, Adhyaka Billy
Media Mesin: Majalah Teknik Mesin Vol. 27 No. 1 (2026)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/mesin.v27i1.16145

Abstract

This study explores the potential of nanoscale silicon carbide (SiC) particles synthesized from rice husk ash to enhance light absorption characteristics in solar panel applications. The SiC particles were produced by burning rice husks, followed by purification and division into two groups: one group underwent heat treatment at 400 °C, while the other was kept untreated for comparative analysis. High-Energy Milling (HEM) for 60 hours was used to reduce the particle size of selected samples. Comprehensive characterization was performed using Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), and UV-Vis spectroscopy in the wavelength range of 200–1100 nm. The results of the study indicate that heat-treated SiC exhibits significantly reduced agglomeration and better particle dispersion compared to untreated samples. FTIR analysis confirmed the presence of additional functional groups (C=C and O–H) in the treated SiC, which contribute to surface chemical modification. Most importantly, the UV-Vis spectra show that the treated SiC maintains consistently higher absorbance values (0.5–0.6) in the visible to near-infrared region (400–1100 nm), whereas the untreated SiC exhibits a decreasing trend (0.4–0.2). These findings suggest that thermal processing can enhance the optical performance of SiC nanoparticles by improving dispersion and introducing functional groups that strengthen light-matter interactions. The superior absorption characteristics of the processed SiC demonstrate promising potential as an additive or nanostructured layer to improve photon capture and overall efficiency in photovoltaic devices
Co-Authors Agung Sugiharto Al-mu’tashim, Mas’ud Fajar Krisnoadi, Ridwan Kurnia, Dicky Kurniawan, Adhyaka Billy Masyrukan Ngafwan Ngafwan Ngafwan Nur Aklis Tri Widodo Besar Riyadi Wijianto, W