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All Journal Traksi : Majalah Ilmiah Teknik Mesin J@TI (TEKNIK INDUSTRI) AUSTENIT Jurnal Desiminasi Teknologi Jurnal Sistem dan Manajemen Industri Turbo : Jurnal Program Studi Teknik Mesin Media Ilmiah Teknik Sipil Industri Inovatif : Jurnal Teknik Industri Jurnal Abdimas Mandiri Jurnal Abdi Insani International Journal of Industrial Optimization (IJIO) Teknomekanik IGKOJEI: Jurnal Pengabdian Masyarakat Profisiensi : Jurnal Program Studi Teknik Industri Nusantara of Engineering (NOE)
Selvia Aprilyanti, Selvia
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Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences Transportation Veterinary

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Journal : teknomekanik

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Experimental study of gas adsorption using high-performance activated carbon: Propane adsorption isotherm Aprianti, Tine; Hapsari, Harrini Mutiara; Permata, Debby Yulinar; Aprilyanti, Selvia; Sobey, Justin; Pham, Kallan; Kandadai, Srinivasan; Chua, Hui Tong
Teknomekanik Vol. 7 No. 1 (2024): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/teknomekanik.v7i1.28672

Abstract

Activated carbon is widely used for its diverse adsorptive abilities, with a vast range of current and emerging uses. This study developed a data set for high-performing activated carbon, its adsorption abilities with differing adsorbents, and an understanding of what deviations are present compared to the widely used adsorption models. This study included the construction of Tóth isotherms in varying conditions. Building a strong isotherm correlation is desired, with an understanding of the relationship between the pores of the activated carbon sample, operating parameters, and the adsorbent. The present data could complement efforts in designing adsorbed natural gas storage systems. Experimental data was collected using a Constant Volume Variable Pressure (CVVP) apparatus, consisting of a temperature-regulated vessel containing the activated carbon sample dosed with varying adsorbents through a controlled dosing vessel. Analysis of the derived data gave a well-fitted Tóth adsorption isotherm, giving the maximum specific adsorption capacity of the activated carbon to be 2.28 g of propane per gram of activated carbon with a standard error of regression
Optimization of bio-based cellulose-phosphate hydrogel production from rice husk waste using the Taguchi method Aprilyanti, Selvia; Pratiwi, Irnanda; Andalia, Winny; Aprianti, Tine; Faritzie, Hariman Al
Teknomekanik Vol. 9 No. 1 (2026): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/teknomekanik.v9i1.47172

Abstract

This work reports the development and statistical optimization of a fully Bio-based absorbent hydrogel synthesized from rice husk–derived cellulose via phosphoric acid crosslinking. Cellulose was extracted through sequential chemical treatments and subsequently converted into a phosphate-crosslinked hydrogel using a controlled synthesis process. A Taguchi L16 (4⁵) orthogonal array was employed to optimize four key synthesis parameters: cellulose content, reaction time, heating temperature, and phosphoric acid volume. Hydrogel structure and morphology were characterized using Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM). FTIR results confirmed the formation of phosphate ester linkages, indicating successful crosslinking, while SEM observations revealed a porous and interconnected network structure favorable for water absorption. The optimized hydrogel formulation achieved a maximum swelling ratio of 91.25 g/g, demonstrating effective absorbent performance despite the absence of synthetic monomers or grafting agents. These findings indicate that rice husk waste can be efficiently valorized into an environmentally benign absorbent material through a simple and statistically guided synthesis route, supporting sustainable hydrogel development and agricultural waste utilization.
Co-Authors Al Faritzie, Hariman Aprianti, Tine Atika Daliilah, Dea Azhari Azhari Chua, Hui Tong Devie Oktarini, Devie Fauzie, Amin Hapsari, Harrini Mutiara Hariman Al Faritzie Hermanto MZ, Hermanto Irnanda Pratiwi Kandadai, Srinivasan Lumbantobing, Iman jaharia Madagaskar, Madagaskar Misdalena, Felly Noviantoro, Djatmiko Permata, Debby Yulinar Pham, Kallan Rita Maria Veranika, Rita Maria Satria, Vissad Rambang Setiati, Tri Woro Sobey, Justin Suryani, Faizah Suryani, Faizah Tamalika, Tolu Winny Andalia