Mechanism, application, influencing factors and environmental benefit assessment of steel slag in removing pollutants from water: A review

Shi, Chen; Wang, Xiaochen; Zhou, Shuo; Zuo, Xiangmeng; Wang, Cheng

doi:10.1016/j.jwpe.2022.102666

Cited by 52 publications

(15 citation statements)

References 88 publications

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“…Moreover, the hydroxyl group on the surface of the particles formed negatively charged adsorption sites that attracted the metal ions onto the surface of SS@CNTs by electrostatic interaction. The corresponding reaction formulas are as follows [ 24 , 25 , 48 , 49 ]:

…”

Section: Resultsmentioning

confidence: 99%

“…The results showed that steel slag provided a remarkable removal of metal ions by ion exchange, chemical precipitation and co-precipitation to form stable compounds [ 24 ]. Shi et al reported that the physical absorption also made a contribution to the adsorption efficiency of steel slag that was determined by the pore structure and the surface area of steel slag particles [ 25 ]. Due to the fact of its direct assemblability with CNTs and its effective adsorbability for heavy metals, steel slag can be used as a substrate for CNTs’ growth via CVD to form a new composite adsorbent.…”

Section: Introductionmentioning

confidence: 99%

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In Situ Synthesis of Carbon Nanotube–Steel Slag Composite for Pb(II) and Cu(II) Removal from Aqueous Solution

Yang

Wang

et al. 2022

Nanomaterials

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Methods and materials that effectively remove heavy metals, such as lead and copper, from wastewater are urgently needed. In this study, steel slag, a low-cost byproduct of steel manufacturing, was utilized as a substrate material for carbon nanotube (CNT) growth by chemical vapor deposition (CVD) to produce a new kind of efficient and low-cost absorbent without any pretreatment. The synthesis parameters of the developed CNT–steel slag composite (SS@CNTs) were optimized, and its adsorption capacities for Pb(II) and Cu(II) were evaluated. The results showed that the optimal growth time, synthesis temperature and acetylene flow rate were 45 min, 600 °C and 200 sccm (standard cubic centimeter per minute), respectively. The SS@CNTs composite had a high adsorption capacity with a maximum removal amount of 427.26 mg·g−1 for Pb(II) and 132.79 mg·g−1 for Cu(II). The adsorption proceeded rapidly during the first 15 min of adsorption and reached equilibrium at approximately 90 min. The adsorption processes were in accordance with the isotherms of the Langmuir model and the pseudo-second-order model, while the adsorption thermodynamics results indicated that the removal for both metals was an endothermic and spontaneous process. This study showed that compared with other adsorbent materials, the SS@CNTs composite is an efficient and low-cost adsorbent for heavy metals such as lead and copper.

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…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

In Situ Synthesis of Carbon Nanotube–Steel Slag Composite for Pb(II) and Cu(II) Removal from Aqueous Solution

Yang

Wang

et al. 2022

Nanomaterials

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“…In recent decades, the increasing water contamination problem has received more attention, and is caused mostly by recalcitrant organic compounds. [1][2][3][4] These compounds usually leave trace concentrations in the effluent, which degrade slowly in the environment and are also difficult to remove by the conventional processes, such as the activated sludge method, coagulation and occulation, precipitation and absorption. [5][6][7] Bisphenol A is widely used as a synthetic material in various areas not only in the production of water bottles but also for livestock.…”

Section: Introductionmentioning

confidence: 99%

La₂CoO_4+δ perovskite-mediated peroxymonosulfate activation for the efficient degradation of bisphenol A

Xin

Jie

et al. 2023

RSC Adv.

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“…Therefore, steel slag is mainly used as a mineral admixture to accelerate the geopolymerization and can enhance the final strength of geopolymer materials. 20,21 This study investigated the synthesis process of fly ash/steel slag-based geopolymer adsorbents and analyzed the adsorption mechanism of the obtained geopolymer adsorbents using a series of analytical methods. The effects of different adsorption parameters on the process of adsorption of MB and Cu 2+ solutions were studied, in order to ascertain the mechanism during the adsorption process.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and adsorption performance of fly ash/steel slag‐based geopolymer for removal of Cu (II) and methylene blue

Yan

Feng

Huang

et al. 2023

Int J Applied Ceramic Tech

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In order to realize the value-added resource utilization of solid waste, geopolymer particle adsorbents were prepared at low temperatures using silica-aluminumrich fly ash and steel slag powders as raw materials. In order to investigate the mechanism of their adsorption of dyes and heavy metal ions from wastewater, the effects of steel slag/fly ash ratio, adsorbent dosage, initial concentration of methylene blue (MB) and Cu 2+ solution, adsorption time and temperature on the adsorption performance of the fly ash/steel slag-based geopolymer adsorbents were investigated, systematically. Results presented that the adsorption capacities of MB and Cu 2+ were 33.30 and 24.15 mg/g, and the removal efficiencies were 99.90% and 96.59% with the dosages of 3 and 4 g/L geopolymer adsorbents (steel slag/fly ash ratio of 20 wt.%), respectively. The adsorption processes of MB and Cu 2+ on the adsorbents were in accordance with the proposed pseudo-second-order and Langmuir isotherm models, which mainly included physical and chemical adsorption mechanisms. The adsorption was a spontaneous endothermic process. The fly ash/steel slag-based geopolymer had good removal ability for dyes and heavy metal ions, and it could maintain good adsorption performance after three cycles of regeneration. It had potential application in wastewater treatment.

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Mechanism, application, influencing factors and environmental benefit assessment of steel slag in removing pollutants from water: A review

Cited by 52 publications

References 88 publications

In Situ Synthesis of Carbon Nanotube–Steel Slag Composite for Pb(II) and Cu(II) Removal from Aqueous Solution

In Situ Synthesis of Carbon Nanotube–Steel Slag Composite for Pb(II) and Cu(II) Removal from Aqueous Solution

La₂CoO_4+δ perovskite-mediated peroxymonosulfate activation for the efficient degradation of bisphenol A

Synthesis and adsorption performance of fly ash/steel slag‐based geopolymer for removal of Cu (II) and methylene blue

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Mechanism, application, influencing factors and environmental benefit assessment of steel slag in removing pollutants from water: A review

Cited by 52 publications

References 88 publications

In Situ Synthesis of Carbon Nanotube–Steel Slag Composite for Pb(II) and Cu(II) Removal from Aqueous Solution

In Situ Synthesis of Carbon Nanotube–Steel Slag Composite for Pb(II) and Cu(II) Removal from Aqueous Solution

La2CoO4+δ perovskite-mediated peroxymonosulfate activation for the efficient degradation of bisphenol A

Synthesis and adsorption performance of fly ash/steel slag‐based geopolymer for removal of Cu (II) and methylene blue

Contact Info

Product

Resources

About

La₂CoO_4+δ perovskite-mediated peroxymonosulfate activation for the efficient degradation of bisphenol A