Cited by 84Adsorption and biosorption for pollutant removalEnvironmental remediation with nanomaterialsPharmaceutical and Antibiotic Environmental Impacts

Potassium Hydroxide-Modified Algae-Based Biochar for the Removal of Sulfamethoxazole: Sorption Performance and Mechanisms

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Wu, Yarui, Cheng, Hu, Pan, Deng, Zhang, Liumeng, Li, Wei, Song, Yang, Bian, Yongrong, Jiang, Xin +1 more·2021·Journal of Environmental Management

Abstract

Biochar has been deemed one of the most promising sorbents for the removal of organic pollutants from aqueous solution. In this study, potassium hydroxide-modified Enteromorpha prolifera biochars (PEBCs) were prepared for the first time and applied for efficient sorption of a typical antibiotic, sulfamethoxazole (SMX). The characteristics of PEBCs, including morphology, pore structure, graphitization degree, surface functional groups, and surface element composition, were investigated. Moreover, sorption kinetic and isotherm experiments were carried out to explore the sorption process, performance, and mechanisms. The maximum sorption capacity for SMX can reach 744 mg g-1, which is much higher than that reported for sorbents. The sorption of SMX onto PEBCs was controlled by both physical and chemical processes. Moreover, pore filling, hydrogen bonding, partitioning, π-π stacking, and electrostatic interactions were possible sorption mechanisms. This study indicated that the structure and properties of algal biochar can be further improved by potassium hydroxide modification at high temperature and applied as an excellent sorbent for the removal of antibiotics from aqueous solution.

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Crossref · 10.1016/j.jenvman.2021.112912

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Authors
Wu, Y., Cheng, H., Pan, D., Zhang, L., Li, W., Song, Y., Bian, Y., Jiang, X., & Han, J.
Affiliations
  • Nanjing Forestry University (CN)
  • Shanghai Academy of Environmental Sciences (CN)
  • Chinese Academy of Sciences (CN)
Corresponding author
  • Cheng, Hu
  • Han, Jiangang
Venue
Journal of Environmental Management
Publisher
Elsevier BV
Published
2021-09
Volume
293
Pages
112912
ISSN
0301-4797 (ISSN-L)
OpenAlex
W3166155846
Cited by
84
References
48
Citations by year
2026: 13 · 2025: 21 · 2024: 18 · 2023: 19 · 2022: 10 · 2021: 3
FWCI
3.72
Type
journal article
Language
en
Open access
Locations
  • Journal of Environmental Management (acceptedVersion)
  • PubMed (publishedVersion)
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 › Pollution › Pharmaceutical and Antibiotic Environmental Impacts
Keywords
algal biochar, Enteromorpha prolifera, potassium hydroxide modification, sulfamethoxazole, antibiotic removal, sorption mechanism, sorption kinetics, sorption isotherms, pore filling, π-π stacking, electrostatic interactions, hydrogen bonding, partitioning, wastewater treatment
MeSH terms
Adsorption, Charcoal, Hydroxides, Sulfamethoxazole, Water Pollutants, Chemical, Potassium Compounds

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