Investigation of the adsorption performance and mechanism of multi-source mineral composite calcination materials on heavy metal ions

Desalination, Год журнала: 2024, Номер 586, С. 117847 - 117847

Опубликована: Июнь 17, 2024

Язык: Английский

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Engineered Biochar for Metal Recycling and Repurposed Applications

Energies, Год журнала: 2024, Номер 17(18), С. 4674 - 4674

Опубликована: Сен. 20, 2024

Heavy metal pollution is posing significant threats to the environment and human health. Engineered biochar, derived from various biomass sources through thermochemical processes, has emerged as a promising solution for pollutant remediation recovery. This review explores latest advancements in preparation, characterization, application of engineered biochar adsorption, recycling, utilization. It begins by discussing significance adsorption providing an overview properties. The examines preparation characterization techniques, emphasizing feedstock selection, conversion methods, surface modifications. Mechanisms such physical chemical ion exchange, complexation, are critically discussed. Moreover, factors influencing capacity, including properties, characteristics, environmental conditions, analyzed. efficacy adsorbing specific metals, heavy transition rare earth elements, reviewed with recent studies key findings. Furthermore, recycling regeneration metal-loaded discussed, focusing on repurposed techniques alongside challenges economic considerations. Finally, future perspectives provided enlightening research. unique addressing potential metal-adsorbed novel precursor produce catalytical electrochemical materials.

Язык: Английский

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Iron Oxide and Hydroxides for the Removal of Heavy Metals from Wastewater

IntechOpen eBooks, Год журнала: 2025, Номер unknown

Опубликована: Апрель 21, 2025

Due to their remarkable adsorptive qualities, low cost, and wide availability, iron oxides hydroxides have attracted a lot of interest as efficient materials for the removal heavy metals from wastewater. The mechanisms by which iron-based minerals, such ferrihydrite, magnetite, haematite goethite interact with through ion exchange, co-precipitation, adsorption are covered in detail this chapter. In order maximise metal uptake efficiency, importance surface chemistry, particle size mineral crystallinity is emphasised. This study critically examines developments oxide functionalisation modification improve capacity selectivity particular metals, including cadmium, lead arsenic. While there naturally occurring oxides/hydroxides, it possible synthesise them, coupling synthesis modifications, these usually monitored or verified using easily accessible instruments X-Ray Diffraction (XRD), Scanning Electron Microscope (SEM) Fourier Transform Infrared Spectroscopy (FTIR). integration oxides/hydroxides nanotechnology polymers has been beneficial both other pollutants, organic ones, highlights versatility materials. ability be regenerated further use makes them attractive wastewater treatment industry terms environmental beneficiation. chapter, therefore, provides comprehensive analysis hydroxides, highlighting crucial role developing sustainable systems reducing pollution.

Язык: Английский

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A study on the removal of pollutants from soil contaminated with high concentrations of heavy metals

Environmental Progress & Sustainable Energy, Год журнала: 2025, Номер unknown

Опубликована: Май 1, 2025

Abstract Heavy metal contaminated soil remediation methods are mostly chemical washing, fixed stabilization, and bioremediation techniques. However, drenching can cause secondary pollution; fixation stabilization is incomplete may fail; has a long time period. Therefore, in this study, we synthesized stable millimeter‐scale gel spherical adsorbent, UIO‐66‐NH 2 @SA, to remove the pollutants from with high concentrations of heavy metals by combination aqueous leaching adsorption without addition additional agents. The @SA be recovered sieving, it still capacity removing after four adsorption–desorption cycles. analysis properties before proved that process would not affect physicochemical fertility soil, characterization x‐ray diffraction, Fourier transform infrared, XPS mechanism was mainly ion exchange functional group complexation.

Язык: Английский

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Synergistic remediation of cadmium-contaminated soil with acid-resistant chitosan-polyvinyl alcohol freeze-dried gels and citric acid

Process Safety and Environmental Protection, Год журнала: 2025, Номер unknown, С. 107277 - 107277

Опубликована: Май 1, 2025

Язык: Английский

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Magnetic porous functional material from coal mine waste for simultaneous removal of cadmium and arsenic in water and soil: Synergistic effect of iron-containing minerals and porous structure

Colloids and Surfaces A Physicochemical and Engineering Aspects, Год журнала: 2024, Номер 703, С. 135334 - 135334

Опубликована: Сен. 10, 2024

Язык: Английский

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Strategy on rapid selection of woody species for phytoremediation in soils contaminated with copper, lead and zinc in Shanghai

International Journal of Phytoremediation, Год журнала: 2024, Номер unknown, С. 1 - 10

Опубликована: Ноя. 11, 2024

The use of woody species for the remediation heavy metal-contaminated soils is an environmentally friendly and economically viable strategy. This study investigates phytoextraction abilities 15 copper, lead zinc in contaminated soil. results indicated that all showed ability, with metal concentrations varying from 5.59 to 27.45 mg·kg

Язык: Английский

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Fertilization of potentially toxic element-contaminated soils remediated with reusable biochar pellets using rice straw, pig manure and their derived biochar

Environmental Pollution, Год журнала: 2024, Номер 366, С. 125551 - 125551

Опубликована: Дек. 17, 2024

Язык: Английский

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Effect of granulated biochar sphere on mineral nutrients in removing potentially toxic elements from contaminated agricultural soils

The Science of The Total Environment, Год журнала: 2024, Номер 949, С. 174775 - 174775

Опубликована: Июль 14, 2024

Язык: Английский

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