Enhanced copper (II) bioremediation from wastewater using nano magnetite (Fe3O4) modified biochar of Ascophyllum nodosum
Abstract
Despite the remarkable Cu(II) sorption biochar potential, it is challenging to desorb them for repeated biochar usage. The present study aims to develop engineered biochar by polarizing Ascophyllum nodosum (seaweed) biomass and magnetizing it with Fe 3 O 4 nanoparticles coating. SEM, EDX, XRD, BET, and FT-IR helped to characterize engineered biochar. Unlike conventional, magnetite biochar exhibited a significant Cu(II) removal potential from an aqueous solution at pH 5. The native and magnetic biochar removal efficiency was 75.2 % (36.99 mgg-1) and 90.27% (45.13 mgg-1), respectively. No significant change in temperature effect was observed. Adsorption study showed that magnetic biochar followed the Langmuir isotherm model with Q max 53.19 mgg-1. Adsorption kinetics study indicates that magnetic biochar chemisorption dominates over physisorption. Thus, this study shows that seaweed-derived modified biochar could be the best alternative bioresource for removing heavy metals from wastewater. It can be reused to reduce the overall treatment cost of the process.
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Ascophyllum nodosum biochar derived from pyrolysis at 700 °C followed by FeCl3 and FeCl2 coprecipitation achieved Cu2+ adsorption capacity of 53.19 mg/g, with pseudo-second-order kinetics dominating.
“Meanwhile, Ascophyllum nodosum biochar, derived from pyrolysis at 700 • C followed by FeCl 3 and FeCl 2 coprecipitation, achieved a Cu 2+ adsorption capacity of 53.19 mg/g, with pseudo-second-order kinetics dominating the adsorption process [86].”
From Algal-Based Carbonaceous Materials for Environmental Remediation: Advances in Wastewater Treatment, Carbon Sequestration, and Biofuel Applications (2025) · cites this paper as [86]
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References 45 · Cited by 60
- Authors
- Kumar, P., Patel, A. K., Singhania, R. R., Chen, C.-W., Saratale, R. G., & Dong, C.-D.
- Affiliations
- National Kaohsiung University of Science and Technology (TW)
- Dongguk University (KR)
- Corresponding author
- Dong, Cheng-Di
- Venue
- Bioresource Technology
- Publisher
- Elsevier BV
- Published
- 2023-11
- Volume
- 388
- Pages
- 129654
- ISSN
- 0960-8524 (ISSN-L)
- OpenAlex
- W4386003357
- Cited by
- 60
- References
- 45
- Citations by year
- 2026: 14 · 2025: 23 · 2024: 21 · 2023: 2
- FWCI
- 4.80
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- Locations
- Bioresource Technology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Kaohsiung University of Science and Technology (112A13)
- National Science and Technology Council (NSTC 111-2222-E-992-006)
- Topics
- Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
- Physical Sciences › Engineering › Biomedical Engineering › Environmental remediation with nanomaterials
- Physical Sciences › Environmental Science › Water Science and Technology › Heavy Metal Pollution Remediation
- Keywords
- copper(II) removal, magnetic biochar, Fe3O4 nanoparticles, Ascophyllum nodosum, seaweed biomass, heavy metal adsorption, wastewater treatment, biochar regeneration, Langmuir isotherm, chemisorption, adsorption kinetics
- MeSH terms
- Adsorption, Biodegradation, Environmental, Charcoal, Copper, Kinetics, Water Pollutants, Chemical, Spectroscopy, Fourier Transform Infrared, Ascophyllum, Ferrosoferric Oxide, Wastewater
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