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All Journal Jurnal Teknologi Dan Industri Pangan Jurnal Rekayasa Proses Research Report - Engineering Science Jurnal Bahan Alam Terbarukan Seminar Nasional Teknik Kimia Kejuangan The Journal of Pure and Applied Chemistry Research Indonesian Journal of Chemistry Jurnal Rekayasa Proses Journal of Multidisciplinary Applied Natural Science INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY Jurnal Rekayasa Proses
Asaf Kleopas Sugih
Jurusan Teknik Kimia, Fakultas Teknologi Industri Universitas Katolik Parahyangan, Bandung
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Education Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Social Sciences

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COMBINATION OF FeCl3 AND Fe3O4 AS A MAGNETIC COAGULANT FOR CONGO RED REMOVAL Sugih, Asaf K; Deiza, Muhammad A; Nurmawan, Safri F; Prasetyo, Susiana; Tan, Daniel; Kristianto, Hans
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 8, NUMBER 1, APRIL 2025
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v8i1.22575

Abstract

Water pollution remains a critical environmental issue, necessitating efficient treatment technologies, among which, coagulation is still widely applied due to its effectiveness in removing colloidal particles and organic pollutants. Inorganic coagulants remain a preferred coagulant despite drawbacks such as excessive sludge formation and long settling times. To address these limitations, the integration of magnetic nanoparticles to form magnetic coagulants has emerged as a promising strategy. Aims: This study was aimed to investigate the effectiveness of the FeCl3 - magnetite (Fe3O4) combination as a magnetic coagulant for the removal of Congo red from synthetic wastewater. Methodology and results: The influence of key parameters, including pH (3-8), coagulant dose (4-44 mL/L), magnetite dose (0-200 mg/L), and initial dye concentration (50-100 mg/L), was systematically evaluated. Coagulation experiment was done by using a standard jar test apparatus.              The settling kinetic was evaluated by using pseudo-first and second-order kinetic model. Conclusion, significance and impact study: It was found that pH 6, coagulant dose of 20 mL/L FeCl3 0.5 M, and magnetite dose of 150 mg/L gave the best coagulation efficiency with 95% removal of 50 mg/L Congo red wastewater. Furthermore, the settling kinetics showed a good suitability with non-linear pseudo-second order-model kinetics. Results demonstrated that FeCl3-Fe3O4 as a magnetic coagulant significantly improved floc formation, settling efficiency, and overall pollutant removal.
Alginate as A Natural Coagulant-Aid: Advances, Challenges, and Applications Kristianto, Hans; Prasetyo, Susiana; Sugih, Asaf Kleopas
Journal of Multidisciplinary Applied Natural Science Articles in Press
Publisher : Pandawa Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47352/jmans.2774-3047.287

Abstract

Coagulation is a critical step in water and wastewater treatments that is essential for the removal of suspended solids, organic matters, and colloidal particles. Conventional metal-based coagulants such as aluminium sulphate, ferric chloride, and polyaluminium chloride and synthetic polymer such as polyacrylamide are widely used due to their proven efficiency. However, concerns over their environmental impact, including the generation of non-biodegradable sludge, potential health risks, and negative impact on the water ecosystem, have driven the search for alternative, eco-friendly coagulants. Natural coagulants derived from plants, animals, or microorganisms have emerged as promising alternatives, offering advantages like biodegradability, non-toxicity, and lower sludge production. Among these, polysaccharide-based coagulants such as alginate, a biopolymer sourced from brown seaweed and bacteria, have gained significant attention. Alginate's biodegradability, non-toxicity, low cost, and versatile gelation properties make it a potential substitute for synthetic coagulants. This review focuses on the use of alginate as a coagulant-aid, providing an overview of its sources, characteristics, coagulation mechanisms, and variables that affect the coagulation performance. The review also highlights the benefits, challenges, and future research directions for improving the efficiency and scalability of alginate in sustainable water/wastewater treatment processes.
Co-Authors Ahimsa, Gadmon Ali Djamhuri Anastasia Prima Kristijarti Angelica Jennifer Atin, Jessica Deiza, Muhammad A Denny Nugroho Hartono, Ryan Henky Muljana Illona Nathania Irawan, Maria Gracella Jessica Atin Katherine Kho Kristianto, Hans Loanda, Jordi Maria Gracella Irawan Noryawati Mulyono Nurmawan, Safri F Oemar, Usman Olivia Juliani Rahma Rahma Reinaldo, Nicholas Susiana Prasetyo S Tan, Daniel Usman Oemar