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All Journal VALENSI Jurnal Ilmiah Widya Jurnal Riset Kimia CHEMPUBLISH JOURNAL Desimal: Jurnal Matematika Indonesian Journal of Chemistry CHEESA: Chemical Engineering Research Articles Pena Literasi Pharmacoscript Jorpres (Jurnal Olahraga Prestasi) Indonesian Journal of Chemical Studies (Indones. J. Chem. Stud.) JURNAL ECONOMINA Jurnal Karya Abdi Masyarakat Babakti : Journal of Community Engangement Kesejahteraan Bersama : Jurnal Pengabdian dan Keberlanjutan Masyarakat INTIFA: Journal of Education and Language Sorption Studies Babakti: Journal of Community Engangement
Rahmat Basuki
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Religion Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Engineering Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Public Health Social Sciences Other

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Effect of Different Temperatures in Magnetite Synthesis on Methylene Blue Adsorption Ananda, Dea Dwi; Napoleon, Sultan; Tarigan, Thessa Octavia Joyetta; Yulita, Tiara Rizki; Alivia, Latisa Stefi; Kusuma, Bagas; Fajri, M. Rizki; Putri, Kayla Sophia; Artdero, Nayantaka Virsa; Nurwanto; Hartono, Rudi; Rahmat Basuki
Sorption Studies Vol. 1 No. 2 (2025): Sorption Studies, December 2025
Publisher : Indonesian Scholar Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55749/ss.v1i2.84

Abstract

This study aims to synthesize magnetite (Fe₃O₄) particles using the coprecipitation method, with variations in temperature (70°C and 90°C) and reaction system (open and closed) to evaluate their effects on product quality. Characterization was conducted using FTIR, XRD, and organoleptic observation to confirm the formation of Fe₃O₄. Additional tests included magnetic attraction measurements through mass response and adsorption capacity (Q) analysis using methylene blue. FTIR analysis showed absorption bands at 3417.00 cm⁻¹, 1627 cm⁻¹, 1404 cm⁻¹, and 578 cm⁻¹, indicating the presence of O–H, C=O, and Fe–O functional groups. XRD patterns revealed diffraction peaks at 2θ values of 30.27°, 35.23°, 43.22°, 53.71°, 57.43°, and 62.11°, confirming the spinel crystal structure of Fe₃O₄. The sample synthesized at 90°C under closed conditions exhibited a darker black color and higher mass yield, suggesting improved crystallinity and phase purity. The closed system also showed higher adsorption capacities of 0.0008 mmol·g⁻¹ at 70°C and 0.0018 mmol·g⁻¹ at 90°C, along with stronger magnetic response. The open system produced a black precipitate with lower yield and weaker magnetic response, suggesting oxidation of Fe²⁺ to Fe³⁺ due to direct contact with oxygen, leading to the formation of compounds such as hematite or maghemite with lower magnetic properties. These results confirm that higher reaction temperatures and closed conditions optimally enhance the quality and stability of magnetite.
Synthesis of Fe₃O₄ using the Co-precipitation Method with Temperature and Time Treatment as Methylene Blue Adsorbent Kuntjahjono, Mayang Fauziah Putri; Lestari, Aura Puja; Nurhalimah, Siti; Sarweswara, Wikrama; Purba, Farelino Oktavianus; Kaunang, Andrew Miracle; Sasongko, Nugroho Adi; Rahmat Basuki
Sorption Studies Vol. 1 No. 2 (2025): Sorption Studies, December 2025
Publisher : Indonesian Scholar Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55749/ss.v1i2.94

Abstract

Magnetite nanoparticles (Fe₃O₄) possess unique magnetic properties and are widely applied in various fields such as biomedical technology, environmental remediation, and material separation. This study reports the synthesis of Fe₃O₄ using the co-precipitation method under varying conditions of temperature, reaction time, and atmospheric exposure (open vs. closed system). Ferric and ferrous salts were reacted with ammonium hydroxide under controlled heating at 70°C and 80°C for 60 minutes. The synthesized materials were evaluated through visual color inspection, qualitative magnetic response, yield efficiency, and magnetic load-bearing capacity. The results showed that a closed system at 80°C produced the most optimal Fe₃O₄, indicated by a deep black color, strong magnetic attraction (149.86 mN), and a yield of 92.5%. Comparatively, open systems led to partial oxidation of Fe², resulting in less magnetic phases like maghemite or hematite. The findings confirm that controlling synthesis parameters, especially atmospheric exposure and temperature, significantly influences the purity, particle uniformity, and magnetic strength of Fe₃O₄ nanoparticles, highlighting the importance of optimized synthesis for practical applications.
Modification of Calcium Oxide Catalyst Derived from Chicken Eggshell Waste with Magnesium Oxide to Enhance Biodiesel Synthesis from Crude Palm Oil Hamidah, Fikriyah; Septaningsih, Dewi Anggraini; Fahri, Mirad; Basuki, Rahmat; Gunaryo; Subiakto, Amadea Kenyoning Hapsari; Nismarawati, Ardine Kusuma; Ningrum, Hanifa Setya; Fajry, Zaydan Al; Erwinda, Maura Agnes; Afandi, Achmad Kusyairi
Sorption Studies Vol. 1 No. 2 (2025): Sorption Studies, December 2025
Publisher : Indonesian Scholar Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55749/ss.v1i2.115

Abstract

Biodiesel is a promising renewable energy source to replace conventional diesel fuel. This study aims to improve biodiesel production efficiency by utilizing a heterogeneous catalyst derived from chicken eggshell-based calcium oxide (CaO), modified with magnesium oxide (MgO). The catalyst was synthesized via co-precipitation and applied in both transesterification and interesterification reactions using crude palm oil (CPO) as feedstock. The optimum reaction was conducted at 65°C for 180 minutes with a 9:1 methyl acetate/methanol to oil molar ratio and 2.5 wt% catalyst loading. The modified CaO.MgO catalyst outperformed unmodified CaO, yielding 89.63% and 99.96% biodiesel via interesterification and transesterification, respectively. The catalyst characterization was performed using FTIR, XRD, and GC-MS, confirming the enhancement in basicity, crystallinity, and FAME content. This study demonstrates the potential of waste-derived catalysts in sustainable biodiesel production while addressing environmental waste issues.
Recent Advances in Nickel Ferrite-Polymer Nanocomposites for Radar Absorbing Material Applications Panjaitan, Thesalonika Br; Hijrianisa, Alya; Apriliyanto, Yusuf Bramastya; Ananda, Dea Dwi; Basuki, Rahmat; Renta, Hotma
Sorption Studies Vol. 1 No. 2 (2025): Sorption Studies, December 2025
Publisher : Indonesian Scholar Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55749/ss.v1i2.125

Abstract

Nickel ferrite (NiFe₂O₄) and its polymer-based composites have emerged as promising candidates for radar absorbing materials (RAMs) due to their unique combination of magnetic and dielectric loss mechanisms. This review highlights recent advances in synthesis strategies, including sol–gel, hydrothermal, co-precipitation, and microwave-assisted methods, which enable precise control of particle size, morphology, and crystallographic defects. Such control supports flexible structural design of nickel ferrite spinel structures, allowing dopant incorporation to tailor magnetic anisotropy and saturation magnetization. These structural features directly affect electromagnetic performance. Magnetic loss is mainly governed by natural resonance and, to a lesser extent, eddy current effects, while dielectric loss arises from dipole polarization, interfacial polarization, and conduction loss. The synergistic balance of magnetic and dielectric losses makes nickel ferrite–polymer nanocomposites promising broadband radar absorbing materials. The discussion emphasizes the role of cation substitution, polymer matrices, and hybridization with carbon-based materials in enhancing microwave absorption bandwidth and impedance matching. Various synthesis approaches, including sol–gel, hydrothermal, and in-situ polymerization, are compared with respect to their influence on particle size, morphology, and absorption efficiency. Challenges such as limited bandwidth, thermal and mechanical stability, and scalability are highlighted, along with potential solutions through advanced nanostructuring, multifunctional design, and sustainable synthesis. Future research directions are also outlined to support the development of next-generation stealth and electromagnetic interference shielding technologies.
Comparative Review of Metal Ferrites for Heavy Metals Adsorption in Water Kuntjahjono, Mayang Fauziah; Napoleon, Sultan; Sarweswara, Wikrama; Pandia, Yoselyn Evangelina; Haqina, Zidni Aghna; Sasongko, Nugroho Adi; Nuha, Nuha; Rifai, Akhmad; Basuki, Rahmat
Sorption Studies Vol. 1 No. 2 (2025): Sorption Studies, December 2025
Publisher : Indonesian Scholar Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55749/ss.v1i2.132

Abstract

Heavy metal contamination in water is one of the most critical environmental issues, posing direct threats to human health and ecosystems. Various methods have been developed to address this problem; however, adsorption remains the most effective technique due to its simplicity, low cost, and regenerability. In this context, ferrite based materials (MFe2O4) offer great potential as heavy metal adsorbents owing to their combined advantages of magnetic properties, chemical stability, large surface area, and easy separation under an external magnetic field. This review paper provides a systematic comparison of various types of metal ferrites (Ni, Mn, Co, Zn, Mg, Cu, and Nd) applied for the removal of heavy metal ions from water. The comparison covers their crystal structures, morphology, surface area, magnetic properties, adsorption capacity, as well as the isotherm models and kinetics underlying the adsorption process. The findings show that each type of ferrite possesses specific advantages and limitations. NiFe2O4 exhibits high structural stability, MgFe2O4 demonstrates high adsorption capacity but is susceptible to dissolution under acidic conditions, CuFe2O4 exhibits strong chemical affinity, and NdFe2O4 shows potential selectivity toward specific ions. Meanwhile, MnFe2O4 and CoFe2O4, particularly in composite forms such as MnFe2O4/biochar and CoFe2O4/FAU, stand out with adsorption capacities exceeding 400 mg/g, sufficient magnetic properties, and easy magnetic separation, making them the most promising candidates for water treatment applications. This paper provides a comprehensive understanding of the structure property function relationship of metal ferrites as selective, stable, and efficient adsorbent materials for heavy metal remediation in aquatic environments.
Analysis of the smash and footwork performance of men's singles athletes at the 2021 toyota Thailand open Adzinar Rasyid; Prasetyo, Heru; Imam Wahyu Nalendra; Aditya Dwi Prima Nanda; Danang Armando Prakoso; Muhammad Bima Akasy; Alwan Priyan Ananta; Novica Anzar Sunarno; Rahmat Basuki; Delvieri Syafril; Fidelis Finishtian Krisna
Jorpres (Jurnal Olahraga Prestasi) Vol. 19 No. 3 (2023)
Publisher : Departement of Sports Coaching, Faculty of Sports Sciences, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study aims to analyze the success rate of smash techniques and dominant footwork patterns in the men's singles semifinals and finals of the 2021 Toyota Thailand Open. The study used a quantitative descriptive method with four male singles athletes who competed in the semifinals and finals as subjects. Data collection was conducted through observation using a smash technique and footwork analysis instrument sheet, while data analysis used descriptive statistics in the form of percentages. The results showed that the success rate of smash techniques in the semifinals and finals was very high. Full smashes, cut smashes, whip smashes, and circular smashes had a success rate of over 90%, while backhand smashes were rarely used in the finals. In addition, the most dominant footwork pattern was movement to the left rear, both in the semifinals and finals. These findings indicate that the effectiveness of smashes and the dominance of certain footwork patterns play a significant role in athletes' performance at the world level. The research results are expected to serve as evaluation material and a reference for coaches and athletes in developing training programs that are more aligned with the actual needs of competition.
Sosialisasi Pengelolaan Sampah dan Instalasi Pengolahan Air Limbah (IPAL) di Desa Muara Angke Minandre Wiratama; Gunaryo; Mentari Zikri Anty; Mirad Fahri; Anggi Khairina H H; Elva Stiawan; Rahmat Basuki; M. Sulthon Nurharmansyah P; Tedi Kurniadi; Dewi Anggraini S; Yusuf Bramastya A; Azimatur Rahmi; Aura Puja Lestari; Moch. Rizki Fajri
Babakti: Journal of Community Engangement Vol 2 No 1 (2025): April
Publisher : Universitas Singaperbangsa Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35706/babakti.v2i1.13091

Abstract

Kesadaran Kebersihan dan Pengelolaan Sampah yang baik merupakan salah satu kebiasaan yang dapat berdampak pada kesehatan yang lebih baik. Kepedulian yang minim dalam menjaga lingkungan yang bersih diprediksi akan menimbulkan dampak buruk bagi lingkungan dan masyarakat. Selain itu, pengelolaan air bersih pada lingkungan merupakan salah satu hal yang perlu diperhatikan. Pengetahuan tentang pengolahan air bersih melalui Instalasi Pengelolaan Air Limbah (IPAL) akan memberikan dampak positif bagi keberlansungan air bersih di lingkungan masyarakat. Pengabdian kepada masyarakat ini dilakukan dengan Sosialisasi melalui pendekatan modal sosial. Pendekatan modal sosial dilakukan dalam pelaksanaan pengabdian kepada masyarakat dimana pendekatan ini digunakan sebagai wadah sosialisasi menjaga kebersihan lingkungan dan pengetahuan dalam pengolahan air bersih bagi msayarakat di Desa Muara Angke. Pengabdian kepada Masyarakat ini bertujuan untuk mensosialisasikan cara mengelola dan mengkategorikan macam-macam sampah, pengelolaan air bersih, dan desalinasi air yang dilakukan di daerah Muara Angke, Kecamatan Penjaringan, Jakarta Utara. Data dikumpulkan melalui observasi langsung dan kuesioner yang diisi oleh peserta sebelum dan sesudah program pelatihan. Hasil analisis menunjukkan bahwa kesadaran masyarakat meningkat yang dilihat dari hasil tes yang dilakukan menunjukkan peningkatan nilai dari materi yang di ujikan. Pendekatan yang tepat berhasil membangkitkan semangat dan komitmen warga yang tercermin dari tingginya tingkat partisipasi. Pelaksanaan kegiatan ini diharapkan memberikan pengetahuan dan kesadaran masyarakat dalam menjaga kebersihan lingkungan dan pengolahan air bersih.
Co-Authors Abner Tonu Lema Aditiya Panji Satrio Aditya Dwi Prima Nanda Adzinar Rasyid Afandi, Achmad Kusyairi Akbar Berliansyah Putra Marhar Akhmad Rifai Alivia, Latisa Stefi Alwan Priyan Ananta Ananda, Dea Dwi Anggi Khairina H H Anitasari, Reza Anselmus Boy Baunsele Arief Budi Santiko, Arief Budi Artdero, Nayantaka Virsa Asmal May Aura Puja Lestari Azimatur Rahmi Bayu Ishartono Bolilanga, Patricya Inggrid Wilhelmina Cherryna Putri Khoirunnisa Danang Armando Prakoso Delvieri Syafril Dewi Anggraini S Dwi Siswanta Elva Stiawan Erwinda, Maura Agnes Esti, Mumpuni Fahri, Mirad Fajri, M. Rizki Fajry, Zaydan Al Fidelis Finishtian Krisna Fidelis Nitti Gunaryo Gusmaini, Nurul Hamidah, Fikriyah Haqina, Zidni Aghna Hartono, Rudi Heriyanti Heriyanti, Heriyanti Heru Prasetyo Hijrianisa, Alya Hikmah Hildegardis Missa Ihsan, Mahya Imam Wahyu Nalendra Irunsah, Aslan Istiqomah, Tiara Johnson N Naat Kaunang, Andrew Miracle Kuntjahjono, Mayang Fauziah Kuntjahjono, Mayang Fauziah Putri Kurnia Krisna Hari Kurnia, Adi Kurniadi, Tedi Kusuma, Bagas Lazuardy, Ardyan Lenny Marlinda Lestari, Aura Puja M. Sulthon Nurharmansyah P Malikhah, Wukhoidatul Mentari Zikri Anty Minandre Wiratama Mirad Fahri Moch. Rizki Fajri Muh. Darwis Muhammad Bima Akasy Napoleon, Sultan Nareswari, Vania Agatha Natalia Sari Pujiastuti Neolaka, Yantus A B Ngatijo Ngatijo Ngatijo Ngatijo Ngatijo Ningrum, Hanifa Setya Nismarawati, Ardine Kusuma Novica Anzar Sunarno Nugroho Sasongko Jati, Nugroho Sasongko Nuha, Nuha Nurrosyid, Naufan Nurul Gusmaini Nurwanto Pandia, Yoselyn Evangelina Panjaitan, Thesalonika Br Prajanti, Fina Dwi Prasojo, Agus Eko Purba, Farelino Oktavianus Putri, Kayla Sophia Putri, Riyanti Putri, Winda Arinda Rahayu Rahayu Rahmawati, Fani Rahmi Rosita Ratna, Djamil Renta, Hotma Restina Bemis Restina Bemis, Restina Rizal Aditiya Saputra Sabrina, Nina Safari, Ibnu Wahid Saifur Rohman Salim Hidayat Sandri, Azzahra Sarweswara, Wikrama Sekarini, Artanti Septaningsih, Dewi Anggraini Siti Nurhalimah Subiakto, Amadea Kenyoning Hapsari Tarigan, Thessa Octavia Joyetta Tedi Kurniadi Toharani, Dita Cinta Yasirly Maulayya Anjani Yonda Yulita, Tiara Rizki Yusuf Bramastya Apriliyanto Zuriyati Zuriyati