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Highly efficient adsorption of dyes by biochar derived from pigments-extracted macroalgae pyrolyzed at different temperature
Abstract
Biochar is known to efficiently adsorb dyes from wastewater. In this study, biochar was derived from macroalgae residue by pyrolysis, and the influence of varying temperature (from 400 °C to 800 °C) on biochar characteristics was investigated. Among the biochar samples tested, macroalgae-derived biochar possessing highly porous structure, special surface chemical behavior and high thermal stability was found to be efficient in removing malachite green, crystal violet and Congo red. The biochar derived by pyrolysis at 800 °C showed the highest adsorption capacity for malachite green (5306.2 mg g-1). In this study, the transformation of microalgae residue into a highly efficient dye adsorbent is a promising procedure for economic and environmental protection.
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“Certain macroalgae-based biochars demonstrated exceptional dye adsorption capacities, with malachite green removal reaching 5306.2 mg/g after pyrolysis at 800 • C [66].”
From Algal-Based Carbonaceous Materials for Environmental Remediation: Advances in Wastewater Treatment, Carbon Sequestration, and Biofuel Applications (2025) · cites this paper as [66]
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Self-citation
Metadata
- Authors
- Chen, Y.-D., Lin, Y.-C., Ho, S.-H., Zhou, Y., & Ren, N.-Q.
- Affiliations
- Harbin Institute of Technology (CN)
- Chinese Culture University (TW)
- Harbin Medical University (CN)
- Corresponding author
- Ho, Shih-Hsin
- Venue
- Bioresource Technology
- Publisher
- Elsevier BV
- Published
- 2018-07
- Volume
- 259
- Pages
- 104-110
- ISSN
- 0960-8524 (ISSN-L)
- OpenAlex
- W2791855448
- Cited by
- 297
- References
- 44
- Citations by year
- 2026: 21 · 2025: 25 · 2024: 32 · 2023: 50 · 2022: 48 · 2021: 42 · 2020: 40 · 2019: 27 · 2018: 11
- FWCI
- 13.15
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Bioresource Technology (publishedVersion)
- PubMed (publishedVersion)
- Chinese Culture University Repository (submittedVersion)
- Funders
- State Key Laboratory of Urban Water Resource and Environment
- Harbin Institute of Technology (2016TS07)
- Topics
- Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
- Physical Sciences › Environmental Science › Water Science and Technology › Coagulation and Flocculation Studies
- Physical Sciences › Energy › Fuel Technology › Thermochemical Biomass Conversion Processes
- Keywords
- biochar, seaweed, pyrolysis temperature, dye adsorption, malachite green, crystal violet, Congo red, porous structure, surface chemistry, thermal stability, wastewater treatment
- MeSH terms
- Adsorption, Charcoal, Coloring Agents, Seaweed, Temperature
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