Cited by 90Adsorption and biosorption for pollutant removalEnvironmental remediation with nanomaterialsThermochemical Biomass Conversion Processes

From macroalgae to porous graphitized nitrogen-doped biochars – Using aquatic biota to treat polycyclic aromatic hydrocarbons-contaminated water

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Cheng, Hu, Ji, Rongting, Bian, Yongrong, Jiang, Xin, Song, Yang·2020·Bioresource Technology

Abstract

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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Crossref · 10.1016/j.biortech.2020.122947

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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
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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