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All Journal Indonesian Journal of Science and Technology Asean Journal of Science and Engineering (AJSE) Advance Sustainable Science, Engineering and Technology (ASSET)
Muhammad Aziz
The University of Tokyo
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Design of Rice Husks Gasification Stove Aulia Eka Wulandari; Sekar Madu Kusumawardani; Mutiara Amelia Sabrina; Sofi Arofah; Siti Nur Shifa Sholihat; Dadi Rusdiana; Tri Suwandi; Muhammad Aziz
ASEAN Journal of Science and Engineering Vol 1, No 1 (2021): AJSE: March 2021
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1383.24 KB) | DOI: 10.17509/ajse.v1i1.33644

Abstract

The human population increases every year, reported from the official website of the United Nation, in 2011 the world population reached 7 billion people. Then in 2016 reached 7.4 billion people and the world population in   2020 reached 7.7 billion people. It is estimated that by 2030 it will grow to 8.5 billion people and by 2050 to reach 9.7 billion inhabitants. which makes energy needs also increase. With these facts, we design gasification stove biomass energy that aims to reduce the use of non-renewable fuels.  The study aims to design a rice husks gasification stove to minimize agricultural waste. In this study, there is an innovation in tar reduction using dolomite as a catalyst. This research uses qualitative research methods that are presented descriptively. The gasification stove design is inspired by the oil stove with the addition of an iron pipe that serves as an oxygen supplier. The design of gasification stoves using rice husk as fuel was successfully carried out. This stove is proven to be one of the tools to maximize the potential of using rice husks as fuel. Finally, we hope that this research can continue to be refined in further studies to maximize the utilization of rice husk waste as renewable alternative energy.
How to Calculate and Measure Solution Concentration using UV-Vis Spectrum Analysis: Supporting Measurement in the Chemical Decomposition, Photocatalysis, Phytoremediation, and Adsorption Process Asep Bayu Dani Nandiyanto; Risti Ragadhita; Muhammad Aziz
Indonesian Journal of Science and Technology Vol 8, No 2 (2023): (ONLINE FIRST) IJOST: September 2023
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijost.v8i2.57783

Abstract

UV-visible (UV-Vis) spectroscopy is a powerful instrument for qualitative investigation and quantitative detection of pollutants in water. UV-Vis spectrophotometry is an analytical method using the concept of transmission of light in UV and Visible wavenumber. Generally, compounds can be identified using UV-Vis Spectrophotometry, based on the concept of light absorption, specifically for compounds with a chromophore group and an auxochrome group. Although the utilization of UV-Vis spectrum analysis has been well-documented, no information regarding detailed step-by-step measurement for examining detailed quantitative analysis, particularly in determining the concentration of an analyte in an aqueous solution sample. Here, this study explores the idea and application of UV-Vis technology in water quality detection, including guidelines for determining the concentration of the sample in an aqueous solution. To support the analysis, we also added practical examples for understanding concentration during the organic decomposition. This paper is intended to be useful for researchers and students in understanding UV-Vis spectrophotometry when analyzing chemical composition during chemical decomposition, photocatalysis, phytoremediation, and adsorption analysis.
How to Purify and Experiment with Dye Adsorption using Carbon: Step-by-Step Procedure from Carbon Conversion from Agricultural Biomass to Concentration Measurement Using UV Vis Spectroscopy Asep Bayu Dani Nandiyanto; Meli Fiandini; Risti Ragadhita; Muhammad Aziz
Indonesian Journal of Science and Technology Vol 8, No 3 (2023): (ONLINE FIRST) IJOST: December 2023
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijost.v8i3.58290

Abstract

This paper contains guidelines and provides a basic understanding of how to do experiments in dye adsorption using carbon. This paper presents a step-by-step experimental procedure from carbon preparation (as biochar) from agricultural waste to concentration measurement using UV-Vis Spectroscopy. We used agricultural waste as a model due to its high cellulose and organic content, making it easily converted into carbon. This paper can be used as a guide for researchers and students in the fabrication of carbon from agricultural waste biomass easily and inexpensively for its application as an adsorbent in the batch adsorption process. This paper also supports the current issues in Sustainable Development Goals (SDGs).
CFD Simulation of Flame Characteristics Resulting from Volatile Matter Combustion of Various Biomass Pellets Ramavi Akbar Akhsanul Fitrah; Ratna Dewi Kusumaningtyas; Dwi Widjanarko; Catur Rini Widyastuti; Muslikhin Hidayat; Muhammad Aziz
Advance Sustainable Science Engineering and Technology Vol. 8 No. 3 (2026): May - July
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v8i3.3591

Abstract

While biomass is a promising carbon-neutral alternative to coal, the specific volatile matter (VM) flame characteristics of diverse biomass pellets, particularly water hyacinth, remain under-researched. This study uses a numerical CFD approach (Ansys Fluent) to investigate how varying VM fractions influence flame structure in a 2D planar slice of the furnace block (25 cm width). Simulations employed the SST k–ω turbulence and Eddy dissipation model to capture mixing-limited chemical reactions. Boundary conditions were based on experimental configurations using a 0.05 m/s air inlet velocity. Results using CO-based flame-tip markers revealed that water hyacinth (VM: 63.5 wt%) produced a peak temperature of ~1,400°C at 75 cm above the fuel, while rice husk and bagasse (VM: 59–77 wt%) exhibited longer, more intense hot plumes compared to the localized heat profile of coal. These findings demonstrate that biomass generates more dispersed combustion zones, aiding in furnace hot-spot prevention and air control optimization. A limitation of this study is that findings are based solely on numerical simulations without direct experimental validation, although the model replicates physical furnace configurations. These results provide a foundation for developing sustainable biomass–coal co-firing technologies.
Co-Authors Asep Bayu Dani Nandiyanto Aulia Eka Wulandari Catur Rini Widyastuti Dwi Widjanarko Fiandini, Meli Muslikhin Hidayat Mutiara Amelia Sabrina Ragadhita, Risti Ramavi Akbar Akhsanul Fitrah Ratna Dewi Kusumaningtyas Sekar Madu Kusumawardani Siti Nur Shifa Sholihat Sofi Arofah Suwandi, Tri