Cited by 52Advanced oxidation water treatmentAdsorption and biosorption for pollutant removalEnvironmental remediation with nanomaterials

Development of a Novel Biochar/Iron Oxide Composite from Green Algae for Bisphenol-A Removal: Adsorption and Fenton-like Reaction

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Yu, Chen, Tang, Jingchun, Su, Hongji, Huang, Jingci, Liu, Fangheng, Wang, Lan, Sun, Hongwen·2022·Environmental Technology & Innovation

Abstract

In this study, algae of Aegagropila linnaei (AL) was selected as low-cost raw material to synthesize biochar/iron oxide composites for the removal of bisphenol-A (BPA). Pristine biochar (BC) with olive-shaped pores and KOH-activated acid washed biochar (ABC) with novel interconnected structure were successfully prepared and further functionalized with ferrous sulfate for effective soldering of Fe3O4 nanoparticles onto the surface of acid biochar through hydrothermal method. The iron modified acid biochar composite (FABC) was found to be with the optimal physicochemical property such as smaller crystalline size (100–150 nm), larger surface area (144.62 m2/g), larger pore volume (0.259 cm 3/g), lower capacitance decrease (2.3%), and lower resistance (0.73 Ω) as compared to other modified biochar. The removal rates of BPA by BC, ABC, and FABC were 43.2 ± 0.5%, 52.6 ± 0.3%, and 69.8 ± 2.3%, respectively, when the concentration of BPA was 10 mg/L (pH 3.0, 303k). Under acidic conditions (at pH 3.0), the reaction activity and the adsorption of hydrogen ions onto Fe3O4 nanoparticles in FABC was prompted, and further increasing the removal rate of BPA. The result suggests that adsorption played main role, while active species (⋅OH and ⋅O2−) produced by the nano-iron oxide on the surface of the composites played some effect in the removal of BPA.

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Authors
Yu, C., Tang, J., Su, H., Huang, J., Liu, F., Wang, L., & Sun, H.
Affiliations
Nankai University (CN)
Corresponding author
  • Tang, Jingchun
  • Wang, Lan
Venue
Environmental Technology & Innovation
Publisher
Elsevier BV
Published
2022-11
Volume
28
Pages
102647
ISSN
2352-1864 (ISSN-L)
OpenAlex
W4280620337
Cited by
52
References
72
Citations by year
2026: 11 · 2025: 12 · 2024: 14 · 2023: 12 · 2022: 3
FWCI
2.99
Type
journal article
Language
en
Open access
Locations
Environmental Technology & Innovation (publishedVersion, cc-by)
Funders
  • National Natural Science Foundation of China (321093, 41807363, U1806216)
  • Ministry of Education of the People's Republic of China (T2017002)
  • Natural Science Foundation of Tianjin City (20JCZDJC00700)
  • National Key Research and Development Program of China (2018YFC1802002)
  • Higher Education Discipline Innovation Project
Topics
  • Physical Sciences › Environmental Science › Water Science and Technology › Advanced oxidation water treatment
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
  • Physical Sciences › Engineering › Biomedical Engineering › Environmental remediation with nanomaterials
Keywords
bisphenol A removal, KOH activation, Fe3O4 nanoparticles, Fenton-like reaction, hydrothermal synthesis, adsorption, hydroxyl radicals, superoxide, low-cost adsorbent, wastewater treatment

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