Yudha Gusti Wibowo, Dedy Anwar, Hana Safitri, Aris Setiawan, Yayat Iman Supriyatna, Sudibyo, Ahmad Tawfiequrrahman Yuliansyah, Himawan Tri Bayu Murti Petrus
Chromium contamination in wastewater poses significant environmental and health risks due to its toxicity and persistence. Traditional remediation methods often lack efficiency, are costly, and have limited scalability, leading to interest in advanced materials for Cr removal. Layered Double Hydroxide (LDH) and magnetite-biochar composites show promise as adsorbents, offering high surface area, magnetic properties, and anion exchange capabilities. This review presents the first comprehensive analysis of LDH/magnetite-biochar composites for Cr(VI) remediation, covering synthesis, modification, and application. Key findings emphasize their superior adsorption capacity and ease of regeneration, attributed to the combined effects of LDH's ion-exchange properties and biochar's porosity. Additionally, the use of biochar from agricultural waste supports a circular economy, providing a cost-effective approach to heavy metal removal. Future research should focus on optimizing synthesis methods and exploring large-scale applications, positioning these composites as viable materials for sustainable wastewater treatment. © 2025 Elsevier Ltd
Department of Mining Engineering, Institut Teknologi Sumatera, Jalan Terusan Ryacudu, Way Hui, Kecamatan Jati Agung, Lampung Selatan, 35365, Indonesia; Center for Green and Sustainable Materials, Institut Teknologi Sumatera, Jl. Terusan Ryacudu, Way Hui, Jati Agung, Lampung Selatan, 35365, Indonesia; Departement of Chemical Engineering, Universitas Gadjah Mada, Jl Grafika No. 2, Bulaksumur, Sleman, 55284, Indonesia; Research Center for Mining Technology, Badan Riset dan Inovasi Nasional, Lampung, Tanjung Bintang, Indonesia; Department of Chemistry, Universitas Islam Negeri Raden Intan Lampung, Lampung, Indonesia