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All Journal Indonesian Journal of Chemistry Prosiding Seminar Nasional Teknik Mesin Journal of Applied Materials and Technology
Manawan, Maykel
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Aerospace Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Rancang Bangun Prototipe Case Powerbank dengan Solarcell sebagai Media Konversi Energi Panas ke Energi Listrik Rizka, Hawa; Gotama, Priya Esa; Manawan, Maykel; Sukandi, Agus
Seminar Nasional Teknik Mesin 2019: Prosiding Seminar Nasional Teknik Mesin 2019
Publisher : Politeknik Negeri Jakarta

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Abstract

Smartphone yang merupakan salah satu contoh kemajuan teknologi di abad ini, yang membuktikkan bahwa kebutuhan manusia semakin tinggi dan menjadi kebutuhan vital, bisa digunakan diperjalanan dengan baterai yang telah diisi dengan pengisi daya sebelumnya. Kinerja baterai smartphone yang terbatas menyebabkan turunnya effisiensi daya baterai sehingga dapat membuat smartphone lebih cepat tereksploitasi baterainya dan membutuhkan pengisi daya yang dapat dibawa kemanapun. Dengan memanfaatkan energi matahari, inovasi powerbank akan membuat pengisian smartphone menjadi lebih mudah dan efisien secara tempat dan waktu. Inovasi yang diperlukan yaitu penambahan solarcell bagi penangkapan sinar matahari lalu dikonversi menjadi energi listrik dan superkapasitor untuk mempercepat pengisian daya bagi smartphone. Metode yang akan digunakan yaitu deskriptif dan eksperimen, yaitu dengan mengadakan survei bagi masyarakat terutama bagi pekerja lapangan seperti driver ojek online sebagai batasan masalah untuk penelitian guna keperluan produk yang dibuat lalu kami akan membuat produk sesuai kebutuhan konsumen dengan hasil yang diinginkan ialah pengisian daya baterai menjadi lebih mudah dan efisien secara waktu dan tempat
Optimized Carbonization and Kinetic Analysis of Palm Kernel Shell Porous Carbon for Heavy Metal Adsorption Hafizah, Mas Ayu Elita; Manaf, Azwar; Valency, Tiara; Andreas, Andreas; Manawan, Maykel
Indonesian Journal of Chemistry Vol 25, No 3 (2025)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.100714

Abstract

This study explores the use of porous carbon derived from palm kernel shells to adsorb lead ions (Pb2+) from water. Porous carbon was produced by carbonizing palm kernel shells at different temperatures (400, 600, and 800 °C) and was evaluated for its effectiveness in a lead chloride (PbCl2) solution. The best adsorption rate, reducing Pb2+ concentration by 27.5%, was observed by carbonized material at 800 °C with a 3 h contact time. Kinetic analysis suggested that the process followed a pseudo-second-order model, indicating that chemical adsorption was the dominant mechanism. The adsorption data were best described by the Freundlich isotherm, implying multilayer adsorption on an uneven surface. These findings highlight the efficient and low-cost potential of palm kernel shell-based porous carbon for removing heavy metals from wastewater. Palm kernel shell-derived porous carbon has proven to be a sustainable, cost-effective, and practical solution for mitigating Pb2+ contamination, positioning it as a promising candidate for environmentally friendly water treatment applications.
Photo-Fenton of Dyes Degradation Using Covalent Triazine Frameworks: Toward Industrial Wastewater Treatment Applications Prawiranegara, Barata Aditya; Sugesti, Heni; Suhendri; Abid, Hussein Rasool; Azhar, Muhammad Rizwan; Rada, Zana Hassan; Manawan, Maykel; Utama, Panca Setia
Journal of Applied Materials and Technology Vol. 5 No. 2 (2024): March 2024
Publisher : Faculty of Engineering Universitas Riau and Applied Materials and Technology Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/Jamt.5.2.77-85

Abstract

A Covalent Triazine Framework (CTF-1) and carbon nanospheres (CS) were synthesized to develop a porous, thermally stable, and efficient photocatalyst for dye degradation in wastewater treatment applications. The synthesized composite material exhibited a high surface area exceeding 400 m²/g, a well-defined mesoporous structure, and excellent optical properties, including strong light absorption extending up to 550 nm and a moderate band gap of approximately 2.8 eV. These characteristics promote effective visible light-driven photocatalysis. The photocatalytic performance was assessed by degrading methylene blue (MB) as a model organic dye pollutant under photo-Fenton conditions. The system demonstrated high efficiency, with over 90% of the dye removed within 120 minutes of irradiation. The degradation followed pseudo-first-order kinetics, confirming the photocatalytic nature of the reaction. Parameter studies indicated that hydroxyl radicals (•OH) were the dominant reactive species responsible for dye degradation. Moreover, CTF-1 retained its photocatalytic activity and structural integrity over multiple reuse cycles, showcasing excellent reusability and stability. The integration of high surface area for dye adsorption, efficient photoactivation under visible light, and robust radical generation synergistically contributed to the enhanced degradation performance. The study highlights the promising role of CTF-1 and its composites as multifunctional materials for advanced oxidation processes. Given its effectiveness, durability, and environmental compatibility, CTF-1 presents a sustainable and scalable solution for the treatment of dye-laden industrial wastewater. This work contributes to the development of next-generation photocatalysts aimed at addressing global challenges in water pollution and environmental remediation.
Co-Authors Abid, Hussein Rasool Agus Sukandi Andreas Andreas Azhar, Muhammad Rizwan Azwar Manaf Gotama, Priya Esa Mas Ayu Elita Hafizah Prawiranegara, Barata Aditya Rada, Zana Hassan Rizka, Hawa Sugesti, Heni Suhendri Utama, Panca Setia Valency, Tiara