Summary of the Research Progress on Advanced Engineering, Processes, and Process Parameters of Rare Earth Green Metallurgy

Materials, Год журнала: 2024, Номер 17(15), С. 3686 - 3686

Опубликована: Июль 25, 2024

The addition of rare earth metals to aluminum alloys can effectively improve their corrosion resistance and has been widely used in the aerospace military industries. However, current methods for preparation involve long processing steps, high energy consumption, carbon emissions, which severely constrains development alloys. Its output is further developed. To this end, paper reviews mainstream production processes (precipitation methods, microemulsion roasting-sulfuric acid leaching electrochemical solvent extraction ion exchange methods) provide basic information green smelting help promote smelting. Based on advantages disadvantages each process as well recent research results, optimal parameters efficiency were summarized. Studies have concluded that precipitation method mostly recovery elements related valuable from solid waste; nanosized by doping; treatment raw ores; molten salt electrolysis a more specific method. This environmentally friendly process. results study direction realization reference improving existing

Язык: Английский

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Adsorption of Cobalt onto Zeolitic and Carbonaceous Materials: A Review

Separations, Год журнала: 2024, Номер 11(8), С. 232 - 232

Опубликована: Июль 27, 2024

At present, cobalt belongs to what are called critical raw materials due its scarcity and economic importance. Cobalt is a crucial element in the development of new technologies applications for decarbonization, with around 40% consumption being used rechargeable battery materials. Additionally, cobalt-based catalysts production hydrogen fuel cells, this also employed superalloys aerospace power generation industries. For reason, it imperative increase recycling by recovering from secondary sources, such as decommissioned lithium-ion batteries. Among recovery, adsorption reliable alternative allows recovery even at low concentrations aqueous solutions relatively cost. potential adsorbents paper reviews two most promising solutions: zeolitic carbonaceous Regarding materials, maximum capacities reached FAU-type zeolites. In case actual trend obtain activated carbons wide range carbon including waste, capacities, on average, larger than ones allow, many cases, selective separation other ions which present same time lithium.

Язык: Английский

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Valorization of Residue from Aluminum Industries: A Review

Materials, Год журнала: 2024, Номер 17(21), С. 5152 - 5152

Опубликована: Окт. 23, 2024

Recycling and reusing industrial waste by-products are topics of great importance across all industries, but they hold particular significance in the metal industry. Aluminum, most widely used non-ferrous globally, generates considerable during production, including dross, salt slag, spent carbon cathode bauxite residue. Extensive research has been conducted to recycle re-extract remaining aluminum from these wastes. Given their varied environmental impacts, recycling materials maximize residue utilization is crucial. The components include various oxides. Through recycling, alumina can be extracted using processes such as pyrometallurgy hydrometallurgy, which involve leaching, iron oxide separation, production salt. Initially, paper will provide a brief introduction generation residues—namely, residue—including followed by an exploration potential applications sectors management, energy, construction materials.

Язык: Английский

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Selective extraction of scandium from bauxite residue (red mud) utilizing iron sulfate roasting followed by water leaching

Separation and Purification Technology, Год журнала: 2024, Номер unknown, С. 130634 - 130634

Опубликована: Ноя. 1, 2024

Язык: Английский

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Catalytic degradation of antibiotic sludge to produce formic acid by acidified red mud

Environmental Research, Год журнала: 2023, Номер 245, С. 117970 - 117970

Опубликована: Дек. 22, 2023

Язык: Английский

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Synthesis and characterization of phosphonic acid functionalized maleic anhydride co-polymer for recovering scandium: Acidic red mud leachate as a case study

Colloids and Surfaces A Physicochemical and Engineering Aspects, Год журнала: 2024, Номер 692, С. 133875 - 133875

Опубликована: Апрель 5, 2024

Язык: Английский

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Hydrothermal chemical modification of red mud for efficient adsorption of methylene blue

Environmental Technology, Год журнала: 2024, Номер unknown, С. 1 - 14

Опубликована: Авг. 16, 2024

Red mud (RM) is the industrial solid waste produced after alumina extraction from bauxite, and most RM directly discharged to landfill yards without any treatment. In this study, modified red (MRM) was synthesized by a hydrothermal chemical modification method as an efficient adsorbent for methylene blue (MB) removal. The prepared MRM characterized X-ray fluorescence spectroscopy, diffraction, scanning electron microscope, transmission Fourier transform infrared spectrometer. effects of reaction time, initial MB concentrations, dosage, temperature, system pH were investigated in batch adsorption experiments. results showed that increased specific surface area material 16.72 414.47 m2/g. maximum capacity 280.18 mg/g under conditions concentration 1000 mg/L, time 300 min, temperature 25 ℃, natural 6.06. Meanwhile, kinetics equilibrium isotherms demonstrated fit well with pseudo-second-order kinetic model Temkin isotherm, respectively. This study provides new valorization demonstrates can be used low cost environmentally friendly potential removal wastewater.

Язык: Английский

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Summary of Research Progress on the Separation and Extraction of Iron from Bayer Red Mud

Journal of Sustainable Metallurgy, Год журнала: 2025, Номер unknown

Опубликована: Янв. 21, 2025

Язык: Английский

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Recovery of Scandium from Bauxite Residue Using Sulfation Roasting-Assisted Water Leaching Process

Mineral Processing and Extractive Metallurgy Review, Год журнала: 2025, Номер unknown, С. 1 - 15

Опубликована: Янв. 22, 2025

This study presents a method for recovering scandium from Indonesian bauxite residue (red mud) through sulfation roasting-assisted water leaching process. Ammonium sulfate, (NH4)2SO4, was chosen as the sulfate source its lower melting point, less corrosivity, decreased toxicity, and potential ammonia recovery. A modified mixing system introduced to improve distribution of (NH4)2SO4 on red mud particles by combining them in water. series experiments were conducted optimize roasting process examining effects (NH4)2SO4/red ratio, temperature, time. Subsequently, optimized while considering effect time liquid-to-solid (L/S) ratio. The roasted showed rapid kinetics, even when using only Under conditions 1/1 (g/g) 700°C, 60 min time, 65°C, min, 10 mL/g (L/S), over 90% recovered, along with 64.4% Al below 8% Fe leaching. These results further corroborated comprehensive analyses such x-ray diffraction (XRD) scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS). offers insights into an alternative, more environmentally friendly Sc recovery mud, promoting sustainable use hazardous waste like mud.

Язык: Английский

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Efficient selective leaching of scandium from red mud through ammonium persulfate–activated roasting

Separation and Purification Technology, Год журнала: 2025, Номер unknown, С. 131761 - 131761

Опубликована: Янв. 1, 2025

Язык: Английский

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