New insights into ball-milled zero-valent iron composites for pollution remediation: An overview

Wang, Peng; Hu, Jian; Liu, Tingyi; Han, Guilin; Ma, Wen-Min; Li, Jun

doi:10.1016/j.jclepro.2022.135513

Cited by 17 publications

(5 citation statements)

References 84 publications

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“…The working method is to put precursors and grinding mediums into a ball mill container and set operating parameters. Because ball milling is a mechanochemical reaction, it transforms the energy obtained from the grinding mill into the materials to be ground [40]. The operating parameters are capable of controlling the input energy, such as milling speed [60], milling time [61], the ball-to-powder ratio, the size and quality of balls [62], etc.…”

Section: Principles and Mechanisms Of Ball Millingmentioning

confidence: 99%

“…However, the current reviews on ball milling mostly concentrated on biochars and biochar-based nanocomposites for gas and aqueous pollutants removal [35,36], single-atom catalysts for versatile catalytic applications [37], ball-milled catalysts, and reagents for water decontamination [38,39], ball-milled ZVIs for pollution remediation [40] and ball milling technology for the treatment of contaminated soils [41]. To the best of our knowledge, there are almost no reviews only concentrating on the reported ball-milled materials and their effectiveness in the adsorptive removal of inorganic and organic pollutants from water.…”

Section: Introductionmentioning

confidence: 99%

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Recent Advances in Ball-Milled Materials and Their Applications for Adsorptive Removal of Aqueous Pollutants

Gao,

Fan,

Sun

et al. 2024

Water

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Ball milling, as a cost-effective and eco-friendly approach, has been popular in materials synthesis to solve problems involving toxic reagents, high temperatures, or high pressure, which has the potential for large-scale production. However, there are few reviews specifically concentrating on the latest progress in materials characteristics before and after ball milling as well as the adsorptive application for aqueous pollutants. Hence, this paper summarized the principle and classification of ball milling and reviewed the advances of mechanochemical materials in categories as well as their adsorption performance of organic and inorganic pollutants. Ball milling has the capacity to change materials’ crystal structure, specific surface areas, pore volumes, and particle sizes and even promote grafting reactions to obtain functional groups to surfaces. This improved the adsorption amount, changed the equilibrium time, and strengthened the adsorption force for contaminants. Most studies showed that the Langmuir model and pseudo-second-order model fitted experimental data well. The regeneration methods include ball milling and thermal and solvent methods. The potential future developments in this field were also proposed. This work tries to review the latest advances in ball-milled materials and their application for pollutant adsorption and provides a comprehensive understanding of the physicochemical properties of materials before and after ball milling, as well as their effects on pollutants’ adsorption behavior. This is conducive to laying a foundation for further research on water decontamination by ball-milled materials.

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Section: Principles and Mechanisms Of Ball Millingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Recent Advances in Ball-Milled Materials and Their Applications for Adsorptive Removal of Aqueous Pollutants

Gao,

Fan,

Sun

et al. 2024

Water

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“…The zerovalent iron (ZVI) method has attracted much attention in recent years and offers good removal capability for inorganic anions and heavy metal ions, and the advantages of low cost, high reactivity, and no secondary pollution. , Due to low electrode potential (standard redox potential, E h 0 = −0.44 V), ZVI could be oxidized and corroded by water, dissolved oxygen (DO), and other substances whose electrode potential exceeds it. By utilizing the high activity of ZVI, it can realize the removal of heavy metals and oxygen-containing anions in wastewater by fixing and reducing them through redox, precipitation flocculation, and adsorption. − …”

Section: Controlling Technologies For Solving the Problem Of Volatile...mentioning

confidence: 99%

Review of Migration, Transformation, and Control of Volatile Components during Desulfurization Wastewater Evaporation: Advances and Perspectives

Chen

Zhan

et al. 2023

Energy Fuels

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Desulfurization wastewater evaporation technology has, over time, been adopted by coal-fired power plants in recent years to achieve zero discharge of wastewater. However, the volatile components of chlorine, trace elements (Hg, As, and Se), and ammonia nitrogen in wastewater are released in gaseous form. It potentially leads to the risk of their cyclic enrichment in wastewater from desulfurization. This review summarizes volatile components' migration and transformation behavior during evaporation. As the evaporation process proceeds, Cl would be released as HCl. Due to the volatility of Hg, As, and Se, the evaporation process would be coupled with the migration and transformation of gaseous components such as Hg 0 , SeO 2 , and As 2 O 5 . The ammonia and ammonium present in the wastewater would release during evaporation, and its release rate depends greatly on the pH value of the wastewater. In addition, the released gaseous and particulate volatile components can further interact with the flue gas components, such as those from thermal decomposition and conversion, adsorption, and condensation on the solid particulate matter from wastewater evaporation. Moreover, several control strategies are proposed in this work to avoid the adverse effects of wastewater evaporation technology. The zero valent iron method offers suitable potential applications with high removal efficiency and the ability to remove multiple pollutants simultaneously. Developing new adsorbents, which may significantly reduce risks associated with the release of volatile components, should also be the focus of future research.

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“…Numerous measurements have been attempted to boost the reduction performance of Fe-based reductive materials. ,,,− Embedding highly dispersed Fe species in different supports can reduce the size of Fe nanoparticles, leading to increased reactivity and stability of iron. − Heteroatom (N, P, B, S, etc.) doping of Fe–carbon composites changes the electronic structure and surface physicochemical properties of carbon supports, enhancing their conductivity and hydrophilicity. − In addition, heteroatoms can coordinate with Fe atoms to form metal derivatives, such as metal nitrides and metal sulfides, improving their stability, atomic utilization, and reactivity. − For example, introducing sulfur onto nanozero-valent iron (nZVI) particles enhanced the conductivity and surface hydrophobicity of nZVI, thus improving its reactivity and electron selectivity in trichloroethylene (TCE) reduction. , Brumovský et al successfully synthesized metal nitrides (Fe x N) by introducing nitrogen atoms into the iron lattice, exhibiting faster dechlorination, higher stability, and longer durability than nZVI. , It is noteworthy that P-atom doping has been well applied in rechargeable batteries and electrocatalytic water splitting to optimize the local environment of Fe atoms, remarkably enhancing their conductivity and stability. ,, However, the application of iron phosphides (Fe x P) in the reductive removal of pollutants has been barely reported thus far.…”

Section: Introductionmentioning

confidence: 99%

Robust Activity and Stability of P-Doped Fe–Carbon Composites Derived from MOF for Bromate Reduction

Long,

Wang,

et al. 2024

ACS Appl. Mater. Interfaces

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Iron-based materials are effective for the reductive removal of the disinfection byproduct bromate in water, while the construction of highly stable and active Fe-based materials with wide pH adaptability remains greatly challenging. In this study, highly dispersed iron phosphide-decorated porous carbon (Fe 2 P(x) @P(z)NC-y) was prepared via the thermal hydrolysis of Fe@ZIF-8, followed by phosphorus doping (P-doping) and pyrolysis. The reduction performances of Fe 2 P(x)@P(z)NC-y for bromate reduction were evaluated. Characterization results showed that the Fe, P, and N elements were homogeneously distributed in the carbonaceous matrix. P-doping regulated the coordination environment of Fe atoms and enhanced the conductivity, porosity, and wettability of the carbonaceous matrix. As a result, Fe 2 P(x)@P(1.0)NC-950 exhibited enhanced reactivity and stability with an intrinsic reduction kinetic constant (k int ) 1.53−1.85 times higher than Fe(x)@NC-950 without P-doping. Furthermore, Fe 2 P(0.125) @P(1.0)NC-950 displayed superior reduction efficiency and prominent stability with very low Fe leaching (4.53−22.98 μg L −1 ) in a wide pH range of 4.0−10.0. The used Fe 2 P(0.125)@P(1.0)NC-950 could be regenerated by phosphating, and the regenerated Fe 2 P(0.125)@P(1.0)NC-950 maintained 85% of its primary reduction activity after five reuse cycles. The study clearly demonstrates that Fe 2 P-decorated porous carbon can be applied as a robust and stable Fe-based material in aqueous bromate reduction.

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New insights into ball-milled zero-valent iron composites for pollution remediation: An overview

Cited by 17 publications

References 84 publications

Recent Advances in Ball-Milled Materials and Their Applications for Adsorptive Removal of Aqueous Pollutants

Recent Advances in Ball-Milled Materials and Their Applications for Adsorptive Removal of Aqueous Pollutants

Review of Migration, Transformation, and Control of Volatile Components during Desulfurization Wastewater Evaporation: Advances and Perspectives

Robust Activity and Stability of P-Doped Fe–Carbon Composites Derived from MOF for Bromate Reduction

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