Hydrochar from Sargassum muticum : a sustainable approach for high-capacity removal of Rhodamine B dye
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An invasive macroalga biomass was valorised by hydrothermal carbonization. The resultant carbonaceous materials exhibited efficient adsorption of hazardous organic pollutants in water due to their favourable physicochemical and textural properties.
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Activated hydrochars can achieve adsorption capacities of up to 714 mg/g for methylene blue.
“Furthermore, algal-based adsorbents have proven effective in mitigating dye pollution from the textile industry, with activated hydrochars achieving adsorption capacities of up to 714 mg/g for methylene blue (MB), facilitated by an optimized surface area and functional group composition [11].”
From Algal-Based Carbonaceous Materials for Environmental Remediation: Advances in Wastewater Treatment, Carbon Sequestration, and Biofuel Applications (2025) · cites this paper as [11]
Spagnuolo et al. (2023) found that hydrochars derived from Sargassum muticum synthesized at 180-300°C for 60-300 min had macroporous structures and oxygen-containing functional groups that enhanced adsorption capabilities.
“Another study performed by Spagnuolo et al., 2023 [11], investigated hydrochars derived from Sargassum muticum, emphasizing their application in removing Rhodamine B dye from wastewater.Hydrochars were synthesized under HTC conditions ranging from 180 to 300 • C for durations of 60 to 300 min.Characterization using FTIR, XPS, and SEM-EDX revealed the presence of macroporous structures and oxygen”
From Algal-Based Carbonaceous Materials for Environmental Remediation: Advances in Wastewater Treatment, Carbon Sequestration, and Biofuel Applications (2025) · cites this paper as [11]
The adsorption kinetics of Rhodamine B on S. muticum hydrochars followed a pseudo-second-order model, indicating chemisorption as the dominant mechanism.
“The adsorption kinetics followed a pseudo-second-order model, indicating chemisorption as the dominant mechanism.”
From Algal-Based Carbonaceous Materials for Environmental Remediation: Advances in Wastewater Treatment, Carbon Sequestration, and Biofuel Applications (2025) · cites this paper as [11]
Hydrochars obtained at lower temperatures (≤180°C) and shorter durations (≤60 min) showed the highest adsorption capacities for Rhodamine B, attributed to their higher surface area and optimal functional group composition.
“Hydrochars obtained at lower temperatures (≤180 • C) and shorter durations (≤60 min) showed the highest adsorption capacities for Rhodamine B, attributed to their higher surface area and optimal functional group composition.”
From Algal-Based Carbonaceous Materials for Environmental Remediation: Advances in Wastewater Treatment, Carbon Sequestration, and Biofuel Applications (2025) · cites this paper as [11]
Adsorption tests for Rhodamine B on S. muticum hydrochars demonstrated removal efficiencies exceeding 90% even without chemical or physical activation.
“Adsorption tests demonstrated removal efficiencies exceeding 90% for Rhodamine B, even without chemical or physical activation.”
From Algal-Based Carbonaceous Materials for Environmental Remediation: Advances in Wastewater Treatment, Carbon Sequestration, and Biofuel Applications (2025) · cites this paper as [11]
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Application of organic waste–derived biocarbon materials: a pathway toward sustainability
Jalilian, M., He, Q. S., & Hu, Y. (2025) · Elsevier eBooks · doi:10.1016/b978-0-443-22184-2.00008-7
Highly yield of blue photoluminescence in rehydrated Sargassum muticum algae at room temperature
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- Authors
- Spagnuolo, D., Iannazzo, D., Len, T., Balu, A. M., Morabito, M., Genovese, G., Espro, C., & Bressi, V.
- Affiliations
- University of Messina (IT)
- University of Córdoba (ES)
- Corresponding author
- Bressi, V.
- Venue
- RSC Sustainability
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2023
- Volume
- 1
- Issue
- 6
- Pages
- 1404-1415
- ISSN
- 2753-8125 (ISSN-L)
- OpenAlex
- W4383425906
- Semantic Scholar
- b51101bbfbdfcc84dababbc31c5523a19167a4d1
- Cited by
- 37
- References
- 65
- Citations by year
- 2026: 8 · 2025: 15 · 2024: 12 · 2023: 2
- FWCI
- 2.96
- Type
- journal article
- Language
- en
- Update notices
- correction (2024-09-26)
- Open access
- diamond
- doi.org
- Licence
- Locations
- RSC Sustainability (publishedVersion, cc-by-nc)
- 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 › Coagulation and Flocculation Studies
- Keywords
- hydrochar, Sargassum muticum, hydrothermal carbonization, rhodamine B, dye adsorption, invasive macroalgae, biomass valorization, carbon materials, water treatment, organic pollutant removal
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