Investigation of the physic-chemical properties and toxic potential of Basic Oxygen Furnace Slag (BOF) in asphalt pavement constructed after 15 years

Xie, Jun; Yang, Chao; Zhang, Linli; Zhou, Xiaojun; Wu, Shaopeng; Ye, Qunshan

doi:10.1016/j.conbuildmat.2019.117630

Cited by 20 publications

(6 citation statements)

References 23 publications

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“…Which kind of transportation is more suitable in economy and can reduce carbon emission should be studied further [25], and it must be admitted that long-term service of steel slag may cause some environmental impact though the use of steel slag in road engineering, which solves the environmental impact of a large amount of steel slag stacking. The accumulation of toxic metals released from BOF highly correlated with those in soil beneath construction site has been proven by Xie et al [26].…”

Section: Introductionmentioning

confidence: 82%

Study on Recycling of Steel Slags Used as Coarse and Fine Aggregates in Induction Healing Asphalt Concretes

et al. 2020

Materials

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Steel slag, a by-product of steelmaking, imposes lots of negative impacts on the environment. For alleviating negative impacts, more and more experiments have been carried out to explore the application possibility of steel slag. The purpose of this study is to explore the feasibility of steel slag being applied in induction healing asphalt concretes to replace coarse and fine aggregate. Surface texture and pore sizes of steel slag were firstly tested, and then steel slag and basalt asphalt mixtures modified with steel fibers were prepared. Moisture susceptibility, dynamic stability, mechanical property, thermal property, induction heating speed, natural cooling speed and healing property of the asphalt mixtures were evaluated. Results showed that steel slags had more obvious holes in the surface while the surface area is much larger than that of basalt. Furthermore, steel fibers and steel slag both have dynamic stability, and steel fibers contribute to increased moisture resistance while steel slag is not. Steel slag asphalt concrete showed better mechanical property and better capacity to store heating. Steel slag asphalt mixtures had a similar heating speed to basalt asphalt mixtures but a significantly slower cooling rate. Finally, the induction healing test and CT scanning test demonstrated that steel slag asphalt mixtures had a similar healing ability to basalt asphalt mixtures. It can be concluded that steel slags have the potential to replace the natural aggregates to be applied in induction heating self-healing asphalt concretes.

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Section: Introductionmentioning

confidence: 82%

Study on Recycling of Steel Slags Used as Coarse and Fine Aggregates in Induction Healing Asphalt Concretes

et al. 2020

Materials

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“…129 However, the stability of the acid/oxidant-treated slag is questionable owing to their higher sensitivity toward omnipresent molecules. 130 Additionally, improper treatments of BOF slag are known to emit toxic heavy metals during the catalytic reaction, thus widening the toxicity scale. 131 Overall, the development of nanocatalyst with intact structure and nontoxic nature is essential to encounter the current problems related to the metal oxides as an activator for PS.…”

Section: Catalysts For Persulfate Activationmentioning

confidence: 99%

“…This leached quantity of iron is well below the allowable guideline value of iron in drinking water . However, the stability of the acid/oxidant-treated slag is questionable owing to their higher sensitivity toward omnipresent molecules . Additionally, improper treatments of BOF slag are known to emit toxic heavy metals during the catalytic reaction, thus widening the toxicity scale .…”

Section: Catalytic Degradation Of Parabenmentioning

confidence: 99%

Overview of Catalytic Removal of Parabens from Water and Wastewater

et al. 2022

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The increased consumption of parabens and associated health hazards has necessitated the development of water treatment technologies capable of removing parabens to desired levels. Among the various available treatment options, catalytic degradation has the advantages of faster reaction kinetics, increased reactive species formation, and no sludge disposal problem. Accordingly, an overview of recent advances in catalytic systems briefing removal, mineralization, and performance comparison between catalysts is essential to scale up and transfer lab-scale results to real-scale applications. The current review highlights the superiority of photocatalysis, Fenton’s, persulfate, and ozonation/catalytic ozonation systems to eliminate parabens. The performance evaluation and economic feasibility of catalytic treatment systems were identified using mathematical models. Additionally, density functional theory calculations were carried out to assess the fundamental mechanism associated with paraben degradation by TiO2 and to develop a molecular-level understanding of synthesizing catalysts that can effectively degrade parabens. In a nutshell, this review acts as a roadmap to show the feasibility of catalytic treatment technologies to eliminate parabens from the water environment.

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“…They found that high concentrations of Cr, Pb, Ni, Cu, Zn, Cd and As in the soil under the pavement. They analysed the weathered BOS slag from the pavement and found the weathered BOS slag had a lower concentration of these elements suggesting the elements had leached out into the soil (Xie et al, 2020).…”

Section: 35: Slag Use In Road Surfaces and Pavementsmentioning

confidence: 99%

The Use of Steelmaking Slags in Land and Marine Applications

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Investigation of the physic-chemical properties and toxic potential of Basic Oxygen Furnace Slag (BOF) in asphalt pavement constructed after 15 years

Cited by 20 publications

References 23 publications

Study on Recycling of Steel Slags Used as Coarse and Fine Aggregates in Induction Healing Asphalt Concretes

Study on Recycling of Steel Slags Used as Coarse and Fine Aggregates in Induction Healing Asphalt Concretes

Overview of Catalytic Removal of Parabens from Water and Wastewater

The Use of Steelmaking Slags in Land and Marine Applications

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