Cadmium removal by FeOOH nanoparticles accommodated in biochar: Effect of the negatively charged functional groups in host

Wan, Shunli; Li, Yan; Cheng, Shuo; Wu, Guowei; Yang, Xuan; Wang, Yu; Gao, Liangmin

doi:10.1016/j.jhazmat.2021.126807

Cited by 26 publications

(5 citation statements)

References 41 publications

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“…The AT skeleton's surface is characterized by a deciency of active sites, potentially contributing to a-FeOOH agglomeration. It is also conceivable that the high surface energy of a-FeOOH triggers internal self-agglomeration, 20,21 Fig. 2d showed the SEM morphology of the ATCh40-Fe 2 O 3 skeleton, demonstrating evident agglomeration of Fe 2 O 3 particles on the surface of ATCh40 skeletons.…”

Section: Morphology Studiesmentioning

confidence: 99%

Application of 3D printing technology for green synthesis of Fe₂O₃ using ABS/TPU/chlorella skeletons for methyl orange removal

Liu,

Cai,

Zhou

et al. 2024

RSC Adv.

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Section: Morphology Studiesmentioning

confidence: 99%

Application of 3D printing technology for green synthesis of Fe₂O₃ using ABS/TPU/chlorella skeletons for methyl orange removal

Liu,

Cai,

Zhou

et al. 2024

RSC Adv.

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“…When the PO 4 3À concentration increases, the ionic strength in the solution increases and the thickness of the FeOOH@ZnO/HZ surface double electric layer becomes thinner. The increased anion neutralizes the cationic charge adsorbed on the surface of FeOOH@ZnO/HZ, facilitating the proximity and chemical reaction of S 2À and PO 4 3À with FeOOH@ZnO/HZ (Wu et al 2010;Wan et al 2022). Therefore, the higher the initial concentration of coexisting PO 4 3À ions induced a higher equilibrium adsorption rate of S 2À .…”

Section: Effect Of Po 4 3àmentioning

confidence: 99%

Effect of the coexistence of SO32− and PO43− on the adsorption performance of zeolite-loaded FeOOH@ZnO for S2−

et al. 2021

Water Science and Technology

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The present study deals with the synthesis of zeolite-loaded FeOOH@ZnO by hydrothermal method and investigates the effects of coexisting SO32− and PO43− ions in the aqueous solution on the adsorption performance for S2−. The results showed that the HNO3-modified zeolite loaded with FeOOH@ZnO (FeOOH@ZnO/HZ) resulted in a maximum S2− removal rate of ≈98%. The adsorbent's performance on removing S2− was significantly enhanced, compared with NaOH and ZnCl2-modified zeolites loaded with FeOOH@ZnO, and the adsorption was proved to be a heat-absorbing process. When SO32− and PO43− coexisted with S2−, SO32− and PO43− had a significant influence on the adsorption properties of FeOOH@ZnO/HZ. When three ions of S2−, SO32− and PO43− were present simultaneously, the adsorption performance of FeOOH@ZnO/HZ on S2− was further, and the removal rate dropped to about 80%. Moreover, FeOOH@ZnO/HZ also adsorbed PO43− and SO32− in the system containing multiple ions, but the adsorption rates of PO43− and SO32− were much lower than S2−. This indicated that the adsorption of S2− in the presence of FeOOH@ZnO/HZ dominates under competitive conditions.

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“…Wan et al used different concentrations of HNO 3 (27,41,54, and 68% in mass) to modify biochar and enhance the content of carboxyl and hydroxyl groups. 18 Similarly, Wang et al employed highly oxidizing and toxic chemicals (H 2 O 2 and 3-mercaptopropyl trimethoxy-silane) to modify biochar and improve the efficiency of heavy-metal adsorption. 19 Enhancing the removal of heavy metals via the surface chemical modification of carbon materials becomes difficult owing to their inert surface properties.…”

Section: Introductionmentioning

confidence: 99%

“…To address this issue, surface chemical modification approaches have been used to improve the properties of carbon materials. , However, the AC surface produced via high-temperature pyrolysis lacks hydroxyl and other active groups, thereby necessitating the use of chemical reagents, e.g., corrosive agents, oxidizing agents, and toxic substances, during the modification procedure. Wan et al used different concentrations of HNO 3 (27, 41, 54, and 68% in mass) to modify biochar and enhance the content of carboxyl and hydroxyl groups . Similarly, Wang et al employed highly oxidizing and toxic chemicals (H 2 O 2 and 3-mercaptopropyl trimethoxy-silane) to modify biochar and improve the efficiency of heavy-metal adsorption .…”

Section: Introductionmentioning

confidence: 99%

Facile Fabrication of Carbon Hybrid Membranes by Fast Self-Assembled Coating with Metal–Phenolic Networks for the Selective Separation of Lead from Water

Qiu,

Wang,

et al. 2023

ACS EST Water

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Inert surface chemistry of carbon materials hinders their flexibility in modification for environmental remediation. Herein, the green facile surface coating of metal−phenolic networks on activated carbon via rapid self-assembly is reported for selective separation of Pb(II) from water. The resulting hybrid membrane (CTA−Zr) demonstrates excellent mechanical stability and water flux at a mass ratio of 80% activated carbon and 20% TA−Zr. Data indicate that Pb(II) adsorption of CTA−Zr is up to 592.75 mg in TA−Zr content and a superior selectivity with a distribution coefficient (K d ) of 55.11 L•g −1 with regard to Pb(II), exceeding that of the ion exchanger D001 by 226 times. Underlying adsorption mechanism is mainly dominated by proton exchange between Pb(II) and phenolic hydroxyl groups of TA as indicated by X-ray photoelectron spectroscopy analysis. Continuous filtration experiments demonstrate that 2850 L of water per square meter of a membrane can be treated using CTA−Zr with a breakthrough point of 1.0 mg•L −1 , whereas D001 membrane yields 100 L of clean water. Saturated CTA−Zr can be regenerated more than five times without a considerable decline in performance. This study introduces a novel chemical modification approach for the inert interface to enhance heavy metals removal from water.

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Cadmium removal by FeOOH nanoparticles accommodated in biochar: Effect of the negatively charged functional groups in host

Cited by 26 publications

References 41 publications

Application of 3D printing technology for green synthesis of Fe₂O₃ using ABS/TPU/chlorella skeletons for methyl orange removal

Application of 3D printing technology for green synthesis of Fe₂O₃ using ABS/TPU/chlorella skeletons for methyl orange removal

Effect of the coexistence of SO32− and PO43− on the adsorption performance of zeolite-loaded FeOOH@ZnO for S2−

Facile Fabrication of Carbon Hybrid Membranes by Fast Self-Assembled Coating with Metal–Phenolic Networks for the Selective Separation of Lead from Water

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Cadmium removal by FeOOH nanoparticles accommodated in biochar: Effect of the negatively charged functional groups in host

Cited by 26 publications

References 41 publications

Application of 3D printing technology for green synthesis of Fe2O3 using ABS/TPU/chlorella skeletons for methyl orange removal

Application of 3D printing technology for green synthesis of Fe2O3 using ABS/TPU/chlorella skeletons for methyl orange removal

Effect of the coexistence of SO32− and PO43− on the adsorption performance of zeolite-loaded FeOOH@ZnO for S2−

Facile Fabrication of Carbon Hybrid Membranes by Fast Self-Assembled Coating with Metal–Phenolic Networks for the Selective Separation of Lead from Water

Contact Info

Product

Resources

About

Application of 3D printing technology for green synthesis of Fe₂O₃ using ABS/TPU/chlorella skeletons for methyl orange removal

Application of 3D printing technology for green synthesis of Fe₂O₃ using ABS/TPU/chlorella skeletons for methyl orange removal