From macroalgae to porous graphitized nitrogen-doped biochars – Using aquatic biota to treat polycyclic aromatic hydrocarbons-contaminated water
Open accessAbstract
Enhanced macroalgal biochars with large specific surface areas (up to 399 m 2 g-1), partly graphitized structure, high nitrogen doping (up to 6.14%), and hydrophobicity were fabricated by co-carbonization of macroaglae, ferric chloride, and zinc chloride. These biochars were used as sorbents for the removal of polycyclic aromatic hydrocarbons from water. The sorption capacity of polycyclic aromatic hydrocarbons onto macroalgal biochars was high (up to 90 mg g-1), and recycling by thermal desorption was practicable. We revealed the physical-dominated multilayer sorption process, based on results from characterization and sorption experiments. Pore filling, mass transfer, π-π stacking, and the partition effect were found to be possible sorption mechanisms. This study suggests that porous graphitized nitrogen-doped biochars may be synthesized from macroalgae with simple one-pot carbonization and display promising applicability for sorption removal of organic pollutants from water.
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Enteromorpha prolifera-derived biochar activated with ZnCl2 and FeCl3 exhibited adsorption capacities of 90 mg/g for NAP, 51 mg/g for ACE, and 86 mg/g for PHE.
“Studies show that Enteromorpha prolifera-derived biochar, activated with ZnCl 2 and FeCl 3 , exhibited adsorption capacities of 90 mg/g for NAP, 51 mg/g for ACE, and 86 mg/g for PHE [44], showcasing its potential in wastewater treatment.”
From Algal-Based Carbonaceous Materials for Environmental Remediation: Advances in Wastewater Treatment, Carbon Sequestration, and Biofuel Applications (2025) · cites this paper as [44]
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- Authors
- Cheng, H., Ji, R., Bian, Y., Jiang, X., & Song, Y.
- Affiliations
- Nanjing Forestry University (CN)
- Ministry of Ecology and Environment (CN)
- Chinese Academy of Sciences (CN)
- Corresponding author
- Song, Yang
- Venue
- Bioresource Technology
- Publisher
- Elsevier BV
- Published
- 2020-05
- Volume
- 303
- Pages
- 122947
- ISSN
- 0960-8524 (ISSN-L)
- OpenAlex
- W3004625728
- Cited by
- 90
- References
- 51
- Citations by year
- 2026: 7 · 2025: 16 · 2024: 15 · 2023: 15 · 2022: 12 · 2021: 22 · 2020: 3
- FWCI
- 3.99
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- Locations
- Bioresource Technology (acceptedVersion)
- PubMed (publishedVersion)
- Funders
- National Natural Science Foundation of China
- 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 › Engineering › Biomedical Engineering › Thermochemical Biomass Conversion Processes
- Keywords
- seaweed, biochar, nitrogen doping, polycyclic aromatic hydrocarbons, water treatment, sorption, co-carbonization, ferric chloride, zinc chloride, thermal desorption, sorption mechanism, π-π stacking, pore filling, mass transfer, organic pollutant removal
- MeSH terms
- Adsorption, Charcoal, Nitrogen, Polycyclic Aromatic Hydrocarbons, Seaweed, Porosity, Biota
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