Enhanced Copper(II) bioremediation using Sargassum duplicatum derived biochar from various water sources

Prashant Kumar, Anil Kumar Patel, Reeta Rani Singhania, Yamini Sumathi, Chiu-Wen Chen and Cheng-Di Dong

Energy & Environment, 2025, vol. 36, issue 5, 2231-2247

Abstract: This study presents Sargassum duplicatum -derived biochar as an efficient solution for removing heavy metals from various water sources, addressing a critical sustainability need. Achieving a remarkable adsorption efficiency of 617 mg/g within 4 h at pH 5 and 150 rpm, surpassing previous findings, the biochar demonstrates exceptional efficacy. Impressively, it achieves removal efficiencies of 97.56% in tap water and 99.05% in seawater. Investigating various heavy metals, the study reveals differential adsorption and removal efficiencies across different water sources. Utilizing scanning electron microscopy, Fourier-transform infrared spectroscopy, and Brunauer–Emmett–Teller analyses, the study elucidates the biochar's porous structure and significant surface area, enhancing its effectiveness. Notable attributes include low-temperature sensitivity, pH 5 optimization, and excellent fits to Langmuir and Pseudo-second-order kinetics models. This research underscores Sargassum duplicatum -derived biochar as a chemically active material, offering a promising solution to water contamination challenges with innovation and remarkable efficiency.

Keywords: Biochar; copper; seaweed; adsorption; pollutant removal; heavy metals (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:sae:engenv:v:36:y:2025:i:5:p:2231-2247

DOI: 10.1177/0958305X241259511

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