Coal gangue-based magnetic porous material for simultaneous remediation of arsenic and cadmium in contaminated soils: Performance and mechanisms

Chen, Min; Zhou, Yuzhi; Sun, Yongkang; Chen, Xiaoyang; Yuan, Liang

doi:10.1016/j.chemosphere.2023.139380

Cited by 12 publications

(2 citation statements)

References 55 publications

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“…However, an immobilization amendment may contain multiple mechanisms, Chen et al [102] successfully prepared a novel coal gangue-based magnetic porous material (MPCG) that reduced effective As and Cd by 17.94-29.81% and 14.22-30.41%, respectively, and the remediation mechanism of As by MPCG included adsorption, oxidation, ion exchange, complexation, and precipitation. Furthermore, MPCG's ability to promote the remediation of As-Cd co-contaminated soil is also achieved by manipulating the abundance of functional genes of relevant microorganisms.…”

Section: Mechanisms Of Soil Remediation Through Immobilization Amendm...mentioning

confidence: 99%

Remediation of Arsenic and Cadmium Co-Contaminated Soil: A Review

Lin,

Ma,

Liu

et al. 2024

Sustainability

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The concurrent presence of arsenic (As) and cadmium (Cd) contamination in soil is widespread and severe, highlighting the need for remediation. However, remediating As and Cd co-contaminated soils is more complex than remediating soils contaminated with a single heavy metal due to the opposite properties of As and Cd in soil. Thus, the different forms of As and Cd in co-contaminated soils and their transformation rules have been systematically reviewed in this paper. Simultaneously, hyperaccumulators and immobilization amendments used in the remediation of As–Cd co-contaminated soil were reviewed. Moreover, the mechanisms of phytoremediation and chemical immobilization techniques in the treatment of As and Cd co-contaminated soil and the remediation effects were expounded in detail. To promote the development of ecological civilization, this paper proposes further remediation strategies and guidance for the remediation of As–Cd co-contaminated soil.

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Section: Mechanisms Of Soil Remediation Through Immobilization Amendm...mentioning

confidence: 99%

Remediation of Arsenic and Cadmium Co-Contaminated Soil: A Review

Lin,

Ma,

Liu

et al. 2024

Sustainability

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“…Through scientific and rational gangue management, it is possible to restore and improve these damaged lands [ 12 ]. The aim is to enhance the ecological quality of the surrounding area by reinstating vegetation and conducting soil remediation, rendering abandoned land ecologically functional once more [ 13 ]. Furthermore, the proper handling of gangue contributes to the mitigation of geological hazards.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Fatigue Performance of Coal Gangue Concrete (CGC) through Polypropylene Fiber Modification: Experimental Evaluation

Wu,

Jing,

et al. 2024

Polymers

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Coal gangue is a byproduct of coal mining and processing, and according to incomplete statistics, China has amassed a substantial coal gangue stockpile exceeding 2600 large mountains, which poses a serious threat to the ecological environment. Utilizing gangue as a coarse aggregate to produce gangue concrete (GC) presents a promising avenue for addressing the disposal of coal gangue; however, gangue concrete presents several challenges that need to be tackled, such as low strength and poor resistance to repeated loads. In this study, polypropylene fibers (PPFs) were incorporated into gangue concrete to enhance its utilization rate. Uniaxial compressive and repeated loading experiments were then conducted to investigate the uniaxial strength and fatigue properties of polypropylene fiber-reinforced gangue concrete (PGC) with varying gangue substitution rates (20%, 40%, and 60%) and different polypropylene fiber admixtures (0, 0.1%, 0.2%, and 0.3%). The findings indicate that incorporating gangue at a substitution rate of 40% could notably enhance the uniaxial compressive strength of PGC, resulting in a maximum increase of 19.4%. In the repeated loading experiments, the ductility of PGC was enhanced with the incorporation of PPFs, resulting in a reduction of 33.76% in the damage factor and 19.42% in residual strain for PGC-40-0.2 compared to PGC-40-0. A PPF content of 0.2% was found to be optimal for enhancing the fatigue performance of PGC. Scanning electron microscope (SEM) testing proved the improvement effect of polypropylene fiber on gangue concrete from a microscopic perspective. This study provides crucial experimental data and a theoretical foundation for the utilization of gangue concrete in complex stress environments.

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State‐of‐the‐Art Synthesis of Porous Polymer Materials and Their Several Fantastic Biomedical Applications: a Review

Ahmed,

Loukanov,

Tsai

2024

Adv Healthcare Materials

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Porous polymers, including hydrogels, covalent organic frameworks (COFs), and hyper crosslinked polymers (HCPs), have become essential in biomedical research for their tunable pore architectures, large surface areas, and functional versatility. This review provides a comprehensive overview of their classification and updated synthesis mechanisms, such as 3D printing, electrospinning, and molecular imprinting. Their pivotal roles in drug delivery, tissue engineering, wound healing, and photodynamic/photothermal therapies, focusing on how pore size, distribution, and architecture impact drug release, cellular interactions, and therapeutic outcomes, are explored. Key challenges, including biocompatibility, mechanical strength, controlled degradation, and scalability, are critically assessed alongside emerging strategies to enhance clinical potential. Finally, recent challenges and future perspectives, emphasizing the broader biomedical applications of porous polymers, are addressed. This work provides valuable insights for advancing next‐generation biomedical innovations through these materials.

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Coal gangue-based magnetic porous material for simultaneous remediation of arsenic and cadmium in contaminated soils: Performance and mechanisms

Cited by 12 publications

References 55 publications

Remediation of Arsenic and Cadmium Co-Contaminated Soil: A Review

Remediation of Arsenic and Cadmium Co-Contaminated Soil: A Review

Enhancing Fatigue Performance of Coal Gangue Concrete (CGC) through Polypropylene Fiber Modification: Experimental Evaluation

State‐of‐the‐Art Synthesis of Porous Polymer Materials and Their Several Fantastic Biomedical Applications: a Review

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