A review of metallurgical slag for efficient wastewater treatment: Pretreatment, performance and mechanism

Ji, Rui; Liu, Tian-Ji; Kang, Le-Le; Wang, Yitong; Li, Junguo; Wang, Fuping; Yu, Qing; Liu, Huan; Guo, Huijuan; Xu, Wenlong; Zeng, Yanan; Fang, Zhen

doi:10.1016/j.jclepro.2022.135076

Cited by 28 publications

(1 citation statement)

References 126 publications

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“…Additionally, it includes aluminum oxide, alkali metal oxides, lime, and trace amounts of other metals such as antimony, zinc, and arsenic [36]. Copper slag has many benefits in supporting the adsorption of pharmaceutical pollutants because it is cost-effective [29], has a large surface area [37] that enhances the support's adsorption capacity, has high porosity that increases the accessibility of the adsorbate to the support's active sites, is environmentally friendly, and is stable and reusable [38,39].…”

Section: Introductionmentioning

confidence: 99%

Removal of Cefixime from Wastewater Using a Superb nZVI/Copper Slag Nanocomposite: Optimization and Characterization

Moridi

Sabbaghi

Rasouli

et al. 2023

Water

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Nowadays, hospital wastewater contains a high concentration of toxic pharmaceutical contaminants, posing a significant threat to the environment, and human and animal life. Cefixime (CFX) is one such toxic contaminant that has a detrimental impact on both aquatic and terrestrial ecosystems. Therefore, it is essential to remove this compound using non-toxic and environmentally friendly procedures to ensure healthy drinking water. In this study, a low-cost and eco-friendly nano adsorbent (nZVI/copper slag) was synthesized and characterized using FESEM, XRD, EDX, FTIR, and zeta potential to remove CFX from wastewater. The Response Surface Methodology (RSM) was used to evaluate the effects of experimental factors including adsorbent dosage (2–10 g/L), pollutant concentration (10–30 mg/L), pH (2–10), and contact time (10–50 min) for efficient CFX elimination. The optimal conditions (adsorbent dosage: 7.79 g/L, pollutant concentration: 19.42 mg/L, pH: 4.59, and reaction time: 36.17 min) resulted in 98.71% CFX removal. The adsorption isotherm and kinetics data showed that the pseudo-second-order kinetics and Langmuir isotherm models were appropriate for CFX elimination. Furthermore, the nano adsorbent demonstrated 90% CFX elimination after up to six repeated cycles in regeneration and reusability testing. Finally, the nZVI/CS nano adsorbent can be an effective and promising solution for removing CFX from wastewater.

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Section: Introductionmentioning

confidence: 99%

Removal of Cefixime from Wastewater Using a Superb nZVI/Copper Slag Nanocomposite: Optimization and Characterization

Moridi

Sabbaghi

Rasouli

et al. 2023

Water

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Preparation of High‐Selectivity Li⁺ Adsorbents Based on Bauxite via Liquid‐Phase Alkaline Thermal Activation

Ding,

Hu,

Qian

et al. 2024

Geological Journal

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Bauxite, as the main aluminium‐bearing mineral in China, is a crucial resource for the industrial production of aluminium and aluminium‐related products. In this study, bauxite‐based aluminium composite Li+ adsorbents were prepared using a liquid‐phase alkaline thermal activation—acid in situ method. The effects of various factors on Li+ adsorption from brine were investigated through single‐factor experiments. Multiple techniques, such as scanning electron microscopy (SEM), energy dispersive x‐ray spectroscopy (EDS), x‐ray diffraction (XRD), Brunauer–Emmett–Teller (BET) method, Fourier transform infrared spectroscopy (FT‐IR), and x‐ray photoelectron spectroscopy (XPS), were employed to characterise and analyse the microstructure, pore size distribution, chemical element distribution, and mineral structure of the adsorbents. In addition, the changes in bauxite structure and properties before and after functionalization were investigated. Results indicate that the adsorption capacity of LATA‐AIS‐LDH‐BX adsorbent prepared by the acid in situ method reached 1.15 mg/g at pH = 7; the adsorption capacity of LATA‐Al‐LDH‐BX adsorbent prepared by the aluminium salt conversion method reached 2.16 mg/g. The adsorption behaviour of both adsorbents followed the pseudo‐second‐order kinetic model and the Langmuir model. In the presence of interfering ions (Na+, K+, SO24+, Mg2+), the composite adsorbents showcased strong selective adsorption capacity for Li+. After five cycles of adsorption–desorption, the adsorption rates decreased by 12.19% and 11.48%, respectively, demonstrating good recycling stability. Furthermore, the Li+ adsorption capacities in salt lake brine reached 0.82 mg/g and 1.48 mg/g, indicating promising potential for industrial application.

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Repair and Protection Materials from Alkali Activation of Metallurgical Slags

Abdullah,

Sandu,

Rahim

et al. 2024

Mining and Metallurgical Wastes Based Alkali-Activated Materials

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A review of metallurgical slag for efficient wastewater treatment: Pretreatment, performance and mechanism

Cited by 28 publications

References 126 publications

Removal of Cefixime from Wastewater Using a Superb nZVI/Copper Slag Nanocomposite: Optimization and Characterization

Removal of Cefixime from Wastewater Using a Superb nZVI/Copper Slag Nanocomposite: Optimization and Characterization

Preparation of High‐Selectivity Li⁺ Adsorbents Based on Bauxite via Liquid‐Phase Alkaline Thermal Activation

Repair and Protection Materials from Alkali Activation of Metallurgical Slags

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A review of metallurgical slag for efficient wastewater treatment: Pretreatment, performance and mechanism

Cited by 28 publications

References 126 publications

Removal of Cefixime from Wastewater Using a Superb nZVI/Copper Slag Nanocomposite: Optimization and Characterization

Removal of Cefixime from Wastewater Using a Superb nZVI/Copper Slag Nanocomposite: Optimization and Characterization

Preparation of High‐Selectivity Li+ Adsorbents Based on Bauxite via Liquid‐Phase Alkaline Thermal Activation

Repair and Protection Materials from Alkali Activation of Metallurgical Slags

Contact Info

Product

Resources

About

Preparation of High‐Selectivity Li⁺ Adsorbents Based on Bauxite via Liquid‐Phase Alkaline Thermal Activation