Journal article
Adsorption-coupled Fenton type reduction of bromate in water by high-yield polymer-derived ceramic-supported nano-zerovalent iron
Environmental research, Vol.258, 119419
01/10/2024
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Abstract
Nano-zerovalent iron (nZVI) is a promising material for the removal of both organic and inorganic pollutants from contaminated water. This study investigates the potential of a novel composite of nZVI on a polymer-derived supporting ceramic (nZVI-PDC) synthesized via the liquid-phase reduction method for the simultaneous adsorption and Fenton-type reduction of bromate anion (BrO3−) in water. The nZVI nanoparticles were effectively anchored onto the PDC by impregnating high-yield carbon in a ferrous sulfate solution. The PDC facilitated the uniform dispersion of nZVI nanoparticles due to its multiple active sites distributed within mesocarbon cavities. The developed nZVI-PDC composite exhibited a high specific surface area of 837 m2 g−1 and an ordered mesoporous structure with a pore volume of 0.37 cm3 g−1. As an adsorbent, the nZVI-PDC composite exhibited a maximum adsorption capacity (qe) of 842 mg g−1 and a partition coefficient (KH) of 10.2 mg g−1 μM−1, as calculated by the pseudo-second-order model. As a catalyst, the composite demonstrated a reaction kinetic rate of 43.5 μmol g−1 h−1 within 6 h at pH 4, using a dosage of 60 mg L−1 nZVI-PDC and a concentration of 0.8 mmol L−1 H2O2. Comparatively, PDC exhibited a qe of 408 mg g−1, KH of 1.67 mg g−1 μM−1, and a reaction rate of 20.8 μmol g−1 h−1, while nZVI showed a qe of 456 mg g−1, KH of 2.30 mg g−1 μM−1, and a reaction rate of 27.2 μmol g−1 h−1. The modelling indicated that the nZVI-PDC composite followed pseudo-second-order kinetics. The remarkable removal efficiency of the nZVI-PDC composite was attributed to the synergistic effects between PDC and nZVI, where PDC facilitated charge transfer, promoting Fe2+ generation and the Fe3+/Fe2+ cycle. Overall, this work introduces a promising adsorption technology for the efficient removal of BrO3− from contaminated aqueous solutions, highlighting the significant potential of the nZVI-PDC composite in water purification applications.
Details
- Title
- Adsorption-coupled Fenton type reduction of bromate in water by high-yield polymer-derived ceramic-supported nano-zerovalent iron
- Creators
- Muhammad Idrees - University of Science and Technology of ChinaSaima Batool - Shenzhen UniversityHina Rasheed - Islamia University of BahawalpurIndika Herath - Deakin UniversityJochen Bundschuh - University of Southern QueenslandNabeel Khan Niazi - University of Agriculture FaisalabadMahtab Ahmad - Quaid-i-Azam UniversityJunguo Xu - Shenzhen UniversityDeliang Chen - Dongguan University of Technology
- Publication Details
- Environmental research, Vol.258, 119419
- Publisher
- Elsevier Inc
- Grant note
- National Natural Science Foundation of China: 52350410463 Outbound Postdoctoral Fellow Research Funding at Shenzhen: 000138010148/2024 Guangdong Provincial Key Construction Discipline Research Ability Enhancement Project: 2021ZDJS090 Guangdong Basic and Applied Basic Research Foundation: 2021B1515140047 Graduate Education Innovation Pro-gram of Guangdong Province: 221105029 Key Scientific Research Project in University of Henan Province: 21A430040
This work was financially supported by the National Natural Science Foundation of China (52350410463) , Outbound Postdoctoral Fellow Research Funding at Shenzhen (000138010148/2024) , Guangdong Provincial Key Construction Discipline Research Ability Enhancement Project (2021ZDJS090) , Guangdong Basic and Applied Basic Research Foundation (2021B1515140047) , Graduate Education Innovation Pro-gram of Guangdong Province (221105029) , and Key Scientific Research Project in University of Henan Province (21A430040) .
- Identifiers
- 991013204113802368
- Copyright
- © 2024 Elsevier Inc. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
- Academic Unit
- Faculty of Science and Engineering
- Language
- English
- Resource Type
- Journal article