Leaching and Geochemical Modelling of an Electric Arc Furnace (EAF) and Ladle Slag Heap

Loncnar, Mojca; Mladenovič, Ana; Serjun, Vesna Zalar; Zupančič, Marija; Sloot, H.A. van der

doi:10.3390/toxics10010010

Cited by 8 publications

(2 citation statements)

References 53 publications

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“…Therefore, efforts should be made to characterize the leachability of contaminants using a variety of comprehensive methods, as has been advocated since the 1990s (Hage and Mulder, 2004). Previous studies (Bożym et al, 2021;Mizerna, 2015, 2016;Mizerna et al, 2017;Mizerna and Król, 2018) and scienti c reports on various materials, both construction materials and waste materials, show a variety of trends in the release of individual heavy metals depending on changes in a given factor using a given test method (Engelsen et al, 2017;Loncnar et al, 2022;Sun et al, 2019;van der Sloot et al, 2018). Consequently, there are di culties in unambiguous assessment of the leaching behaviour of heavy metals.…”

Section: Introductionmentioning

confidence: 99%

Multi-criteria Decision Making Models in assessment of heavy metals leaching from waste

Król

Jurczyk-Bunkowska

Mizerna

2023

Preprint

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The paper presents a specific model used for the assessment and selection of the method of heavy metals leaching from waste materials. A recommendation for the rational selection of leachability method was made, taking into account the crucial parameters affecting the leaching process derived from the authors' research experience. The assessment models were supplemented with characteristics relating to the cost and time required to perform the tests. An approach was developed that makes the weights of the assessment criteria dependent on the degree of environmental risk from particular heavy metals and waste types. Using multiple-criteria decision analysis four models were developed for the assessment and selection of a test method for the leaching of heavy metals from waste, differing in the way in which the weights of the assessment criteria depend on the potential threat the waste poses to the environment. A key element of the proposed approach is assigning the weights of the criterion to the toxicity of the heavy metal and the kind of wastes and their management scenario. The results obtained indicate that the current practice of only imposing a batch leaching test is inappropriate. The choice of method should be justified in terms of environmental safety and reasonable in terms of time and costs. The results of the paper indicate the possibility of using the proposed model in practice as a recommendation for the method for heavy metals leaching from waste materials and their further treatment in accordance with the principles of sustainable waste management.

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Section: Introductionmentioning

confidence: 99%

Multi-criteria Decision Making Models in assessment of heavy metals leaching from waste

Król

Jurczyk-Bunkowska

Mizerna

2023

Preprint

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“…The multipurpose use rate of steel slag in China is less than 30%, of which less than 10% is used in building materials. Most steel slag is regarded as industrial waste, so it is filled or accumulated, resulting in ecological environmental pollution and other problems [ 1 , 2 , 3 , 4 , 5 ]. At the same time, China’s roads are in a stage of rapid development.…”

Section: Introductionmentioning

confidence: 99%

Study on the Performance of Steel Slag and Its Asphalt Mixture with Oxalic Acid and Water Erosion

et al. 2022

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The reuse of steel slag, a large-scale solid waste from steel production, has good social and environmental benefits. The application of a steel slag asphalt mixture is mainly hindered by its volume expansion in water. The expansion of steel slag can be inhibited by oxalic acid. The expansion rate and adhesion of steel slag were investigated, and the immersion stability of steel slag and its asphalt mixture was evaluated by water erosion. By means of XRD, XRF, TG, SEM, etc., the influence mechanism of oxalic acid and water erosion on the properties of steel slag and its asphalt mixture was discussed. The results show that oxalic acid can not only inhibit the expansion of steel slag but also improve its crush resistance, with a reduction in the expansion rate of steel slag by 53%. Oxalic acid is able to leach alkaline metal elements, reducing its adhesion with asphalt. After 10 days of water erosion, the rutting stability and bending crack resistance of the treated steel slag mixture decreased by 37% and 43.2%, respectively. Calcium oxalate is generated on the surface of treated steel slag, which improves the surface compactness, effectively inhibits the expansion of steel slag caused by water erosion, and improves the performance of steel slag and its asphalt mixture. Water erosion can accelerate the hydration and shedding of calcium-containing substances on the surface of steel slag, reduce the adhesion of steel slag, and lead to degradation in the performance of steel slag and its asphalt mixture. Oxalic acid is able to effectively inhibit the expansion of steel slag, and the treated steel slag can be used as recycled aggregate in asphalt mixture, effectively solving the problems of road aggregate deficiency and environmental pollution caused by steel slag.

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Evaluation and selection of a rational test method for heavy metal leaching in terms of environmental and economic factors

Król

Jurczyk-Bunkowska

Mizerna

2023

Stoch Environ Res Risk Assess

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The paper presents a specific model used to assess and select the method of heavy metal leaching from waste materials. A recommendation for the rational selection of the leaching method was made, taking into account the crucial parameters affecting the leaching process derived from the authors' research experience. The assessment models were supplemented with characteristics relating to the cost and time required to perform the tests. An approach was developed that links the weights of the assessment criteria with the degree of environmental risk from a particular heavy metal and waste type. Using multiple-criteria decision analysis, four models were developed for the assessment and selection of a test method for the leaching of heavy metals from waste. The difference is in the way the weights of the assessment criteria depend on the potential threat of the waste to the environment. A key element of the proposed approach is assigning the weights of the criterion to the toxicity of the heavy metal, the type of waste, and their management method. The results obtained prove that the current practice of only employing the batch leaching test is inappropriate. The choice of method should be justified in terms of environmental safety as well as time- and cost-effectiveness. The results of the paper show that the proposed model can be used in practice and be a recommendation for choosing the method of leaching heavy metals from waste and their further treatment, following the principles of sustainable waste management.

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Leaching and Geochemical Modelling of an Electric Arc Furnace (EAF) and Ladle Slag Heap

Cited by 8 publications

References 53 publications

Multi-criteria Decision Making Models in assessment of heavy metals leaching from waste

Multi-criteria Decision Making Models in assessment of heavy metals leaching from waste

Study on the Performance of Steel Slag and Its Asphalt Mixture with Oxalic Acid and Water Erosion

Evaluation and selection of a rational test method for heavy metal leaching in terms of environmental and economic factors

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