Highly-efficient degradation of organic pollutants by oxalic acid modified sludge biochar: Mechanism and pathways

Tang, Xuejiao; Lei, Yuchen; Yu, Congya; Wang, Cuiping; Zhang, Pengpeng; Lu, Huixia

doi:10.1016/j.chemosphere.2023.138409

Cited by 7 publications

(1 citation statement)

References 56 publications

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“…The two peaks visible in the Fe 2p spectra were Fe 2p3/2 and Fe 2p1/2, with the former being narrower and stronger than the latter (Yamashita and Hayes 2008). The 711.4 eV and 713.8 eV of the Fe 2p3/2 spectra were associated with Fe(II) and Fe(III), respectively (Tang et al 2023). The satellite peaks observed at approximately 719.0 eV and 732.0 eV were attributed to Fe 2p3/2 and Fe 2p1/2 respectively, confirming the Fe loaded on the MB s existed in the form of γ-Fe 2 O 3 (Hao et al 2018;Tu et al 2020).…”

Section: Phosphorus Adsorption Capacities and Mechanism Of Biocharsmentioning

confidence: 92%

Potentials of emergent plant residue derived biochar to be alternative carbon-based phosphorus fertilizer by Fe(II)/Fe(III) magnetic modification

Xin,

Yang,

et al. 2024

Biochar

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Emergent plants have been remarkably effective in reducing phosphorus (P) discharge from ecological ditches; however, the treatment and recycling of these residues is a great challenge. In this study, magnetic biochars (MBs, i.e., MB-A, MB-C, and MB-T) were fabricated from three emergent plant residues (Acorus calamus L., Canna indica L., and Thalia dealbata Fraser, respectively) and modified with Fe(II)/Fe(III). Scanning electron microscopy-energy dispersive spectroscopy and X-ray diffraction spectra confirmed the successful loading of Fe3O4 and FeO(OH) onto the surfaces of the MBs. Batch adsorption experiments showed that MBs exhibited a higher P adsorption capacity than that of the raw biochars. Within the range of 0.8–43.0 mg L−1 in solution, the adsorption capacities of P by MB-A, MB-C, and MB-T were 304.6–5658.8, 314.9–6845.6, and 292.8–5590.0 mg kg−1, with adsorption efficiencies of 95.2–32.9%, 98.4–39.8%, and 91.5–32.5%, respectively. The primary mechanisms that caused P to adsorb onto the MBs were inner-sphere complexation and electrostatic attraction. Low pH conditions were more beneficial for the P adsorption of the MBs, while co-existing anions had a negative impact with the following order: HCO3− > SO42− > Cl−≈NO3−. The P-31 nuclear magnetic resonance results further demonstrated that the main adsorbed P species on the MBs was orthophosphate, followed by orthophosphate monoesters and DNA. Overall, MBs offer a resource utilization strategy for emergent plant residues and P-laden MBs are promising alternative P fertilizers. Graphical Abstract

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Section: Phosphorus Adsorption Capacities and Mechanism Of Biocharsmentioning

confidence: 92%

Potentials of emergent plant residue derived biochar to be alternative carbon-based phosphorus fertilizer by Fe(II)/Fe(III) magnetic modification

Xin,

Yang,

et al. 2024

Biochar

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Efficient degradation of sulfadiazine by UV-triggered electron transfer on oxalic acid-functionalized corn straw biochar for activating peroxyacetic acid: Performance, mechanism, and theoretical calculation

Zeng,

Ma,

et al. 2024

Bioresource Technology

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Schiff base crosslinked graphene/oxidized nanofibrillated cellulose/chitosan foam: An efficient strategy for selective removal of anionic dyes

Liu,

Zheng

et al. 2023

International Journal of Biological Macromolecules

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Highly-efficient degradation of organic pollutants by oxalic acid modified sludge biochar: Mechanism and pathways

Cited by 7 publications

References 56 publications

Potentials of emergent plant residue derived biochar to be alternative carbon-based phosphorus fertilizer by Fe(II)/Fe(III) magnetic modification

Potentials of emergent plant residue derived biochar to be alternative carbon-based phosphorus fertilizer by Fe(II)/Fe(III) magnetic modification

Efficient degradation of sulfadiazine by UV-triggered electron transfer on oxalic acid-functionalized corn straw biochar for activating peroxyacetic acid: Performance, mechanism, and theoretical calculation

Schiff base crosslinked graphene/oxidized nanofibrillated cellulose/chitosan foam: An efficient strategy for selective removal of anionic dyes

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