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All Journal JURNAL KIMIA SAINS DAN APLIKASI MARINA CHIMICA ACTA POSITRON Jurnal Kimia Khatulistiwa Equator Journal of Management and Entrepreneurship Protobiont: Jurnal Elektronik Biologi SEMIRATA 2015 Journal of Tropical Biodiversity and Biotechnology Science and Technology Indonesia Jurnal Farmasi Sains dan Komunitas Journal Of Chemical Process Engineering (JCPE) ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemistry Indonesian Journal of Pure and Applied Chemistry Martabe : Jurnal Pengabdian Kepada Masyarakat Walisongo Journal of Chemistry Jurnal Kartika Kimia Molekul: Jurnal Ilmiah Kimia JSI (Jurnal sistem Informasi) Universitas Suryadarma Portal: Jurnal Teknik Sipil Bappenas Working Papers Abdimas Galuh: Jurnal Pengabdian Kepada Masyarakat Creativity And Research Theatre Journal Jurnal Abdimas ADPI Sains dan Teknologi Jurnal PkM (Pengabdian kepada Masyarakat) Jurnal Teknologi Jurnal Akademika Kimia Molekul: Jurnal Ilmiah Kimia Jurnal Akademika Kimia Jurnal Sipil Sains Terapan
Gusrizal Gusrizal
Department Of Chemistry, Faculty Of Mathematics And Natural Sciences, Universitas Tanjungpura, Jl. Prof. Dr. H. Hadari Nawawi, Pontianak 78124, Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Physics Social Sciences

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Journal : JURNAL KIMIA SAINS DAN APLIKASI

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Synthesis of Magnetic Chitosan Composite Beads as an Adsorbent for Removal of Organic Matter from Peat Water Uul Warosatul Ambiya; Nurlina Nurlina; Gusrizal Gusrizal
Jurnal Kimia Sains dan Aplikasi Vol 25, No 9 (2022): Volume 25 Issue 9 Year 2022
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.25.9.338-345

Abstract

Groundwater in peatlands has the potential to be utilized as a water source, but its high organic matter content presents challenges. This study aimed to improve the quality of peat water through the adsorption of organic matter using chitosan magnetic beads composite adsorbent. Magnetic chitosan beads (KMB) composite was synthesized by mixing chitosan, acetic acid, and a mixture of Fe2+/Fe3+ solution with a mole ratio of 1:2. This mixture was then dropped into a sodium hydroxide solution. In addition to KMB, magnetic composite beads containing glutaraldehyde crosslinking agent (KMBG) were also synthesized. The results of composites analysis using a Fourier transform infrared (FTIR) spectrophotometer showed typical Fe-O absorption bands at 582 cm-1 and 578 cm-1 for KMB and KMBG. The typical C=N absorption band for glutaraldehyde in KMBG appeared at 1631 cm-1. X-ray diffraction (XRD) analysis revealed the characteristic peaks of Fe3O4 for KMB and KMBG at 2θ = 30.2°, 35.5°, 43.2°, 57.0°, and 62.8° with an amorphous structure. The adsorption of organic matter was performed by varying the pH (2, 3, 4, and 5) of peat water and the mass of the adsorbent (50, 70, 100, 200, and 300 mg). The optimum adsorption occurred at pH 2 with an absorbent mass of 0.1 g KMB and 0.07 g KMBG. Applying KMB on peat water reduces turbidity, color, and absorbance at a wavelength of 254 nm (Aλ=254), which is better than using KMBG. These three parameters’ efficiency percentages were 44%, 78%, and 74% for KMB and 17%, 30%, and 59% for KMBG.
Synthesis of Hydrophobic Silica Xerogel from Fly Ash for Oil–in–Water Adsorption Hanifah, Ummi; Shofiyani, Anis; Gusrizal, Gusrizal
Jurnal Kimia Sains dan Aplikasi Vol 28, No 5 (2025): Volume 28 Issue 5 Year 2025
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.28.5.235-243

Abstract

In this study, silica xerogel was synthesized from coal fly ash modified with trimethylchlorosilane (TMCS) reagent to increase the hydrophobicity of the material. TMCS-modified silica xerogel was then used for oil adsorption in water. Silica xerogel was synthesized using the sol-gel method with sodium silicate from fly ash as a precursor and citric acid as a catalyst. The sol-gel process involves sequential steps of hydrolysis and condensation, followed by gelation (the sol-to-gel transition) and aging. Surface modification of the resulting silica xerogel was conducted using TMCS in a mixture of methanol and petroleum benzine, with volume ratios of TMCS:methanol:petroleum benzine set at 0:1:1, 1:1:1, 2:1:1, and 3:1:1. The synthesized silica xerogel was characterized using FTIR spectroscopy, SEM, GSA, and contact angle measurements to evaluate its hydrophobicity. FTIR spectrophotometry results revealed that silica modified with TMCS exhibited absorption bands corresponding to Si–CH3 groups at 843.20, 845.69, and 843.18 cm-1. These findings indicate the successful formation of silyl groups on the surface of the silica xerogel when using TMCS:methanol:phosphate buffer (PB) ratios of 0:1:1, 1:1:1, 2:1:1, and 3:1:1. SEM analysis revealed that the surface morphology of the synthesized silica xerogel exhibited a porous structure with a mesoporous pore size distribution. Based on the experimental results, it can be concluded that surface modification with TMCS enhances the hydrophobicity of the silica xerogel. An increase in TMCS volume led to a corresponding increase in hydrophobicity. The hydrophobic silica xerogel demonstrated a good adsorption capacity for oil in water, ranging from 6 to 22 mg/g, with the adsorption capacity increasing in accordance with the degree of hydrophobicity.
Co-Authors Abrori, Sayyidus Dzaki Adi Maulana, Adi Ajuk Sapar Alimunddin, Andi Hairil Andi Hairil Alimuddin Andi Hairil Alimuddin Andrian Kaifan Anis Shofiyani AR, Sulaiman Ari Widiyantoro Bambang Rusdiarso Bambang Rusdiarso Bekti Yulianti Chairil Anwar Chris Octavianus Cucu Suhery Devi Wulandari Dewi Puspita Dwi Yuniarsih Eko Sri Kunarti Eko Sri Kunarti Elvi Rusmiyanto Pancaning Wardoyo, Suci Lestari, Mukarlina, Endah Sayekti Evi Noviani Fikri z.a, Muhammad Aulia Firman Shantya Budi, Firman Shantya Fishal, Fishal Gani, Fauzi A. Hairunnisa Hairunnisa Hamzi Anwari Hanafiah Hanafiah, Hanafiah Hanif Hanif Haris, Raihan Harlia, Harlia Hestivera, Eva Novianti Ibnur Rusi Imelda Hotmarisi Silalahi Irma D. Oktavianta Jasmita, Jasmita Karimuddin, Karimuddin Krisnanti, Gendis Yayi Kurniati Kurniati Lestari, Titiek Mastura, Meila MISWAR MISWAR Miswar, Khairul Muhammad Reza Mulizar Mulizar Muzaffar, Anis Fikri Nasril Fuad Hasan Nelly Wahyuni Normaningsih Rahayu Noverando Rafiel Angelo Nurlina Nurlina Nurlina Nurlina Nurlina, Nurlina Prayitno, Dwi Imam Puji Ardiningsih Putra, Harisal Radianti, Sri Rahayu, Warsi Kurnia Renny Puspita Sari Rinaldi, Muhammad Ikhsan Risa Nofiani Risa Nofiani Rizki Noviani Ridwan Rizky Noviani Ridwan Roberta Anjelia Rudiyansyah Rudiyansyah Rudiyansyah Rudiyansyah Sabardiansyah, Rajab Salatiana Salatiana Saprianti, Siti Sari, Emilda Sari, Gladis Raspida Shofiyani, Anis Siregar, Muhammad Andryansyah Siregar, Muhammad Rizkyansyah Sri Juari Santosa Sri Juari Santosa Sri Juari Santosa ST., MT, Syaifuddin Din Sulaiman Sulaiman Syahbanu, Intan Syarwan, Syarwan Syukri Syukri Thamrin Usman Titin Anita Zahara, Titin Anita Titin Anita Zaharah Ulfa, Nadia Ummi Hanifah Uul Warosatul Ambiya Warsidah Warsidah Wibowo, M. Agus Wibowo, Muhamad Agus Widiyananta, Surya Winda Rahmalia Winda Rahmalia Yohannes Dewanto Yudha Arman Yulia Zahara Yuniarni Yuniarni Zaharah, Titin Anita