Utilization of Linz–Donawitz slag from steel industry for waste minimization

Singh, Siddharth; Rekha, Pawan; Surya, M.

doi:10.1007/s10163-020-00981-z

Cited by 36 publications

(6 citation statements)

References 103 publications

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“…Slag management must be sustainable if the steel industry is to have a minor negative environmental impact. To lessen the quantity of the trash that ends up in landfills, efforts are being made to reuse slag for use in construction or to use it in the production of cement or other building materials [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Use of marble dust and linz-donawitz slag for the production of pervious concrete

Singh,

Kaur,

Singh

2023

IOP Conf. Ser.: Mater. Sci. Eng.

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Nowadays, the development of infrastructure is in full swing, which exploits natural resources and causes environmental pollution. Furthermore, cement is the most essential commodity for construction material mainly concrete, and its production is rapidly increasing to fulfil the demand for construction. The cement production is regarded as the one of the key causes of CO2 emissions, which adversely affect the atmosphere by causing global warming. In addition to this, the ecosystem may suffer from marble quarrying and construction material processing. Nonetheless, waste marble can be used as a by-product if managed in accordance with regional, national, and international environmental laws. On the other hand, Currently, LD slag is disposed of in landfills, which exacerbates the scarcity of available land and contaminates groundwater through the leaching of heavy metals. The waste materials have the potential to be used in the development of infrastructure materials. The infrastructure development has aggravated the issue of rainwater runoff and flash flooding in rainy seasons because of inappropriate drainage. The elimination of sand in pervious concrete reduces its strength performance its practical applications are still limited. This study is aimed toward the permeability improvement of conventional pavement concrete by the implementation of pervious concrete and also to improve its strength characteristics. In this study, an attempt has to be made to replace the cement with marble dust up to a replacement level of 0% to 20% with an interval of 5%. Also, natural aggregate is replaced with Linz-Donawitz (LD) slag by 5%, 15%, 25%, and 35%. From the study, it is found that the use of marble dust and LD slag improves the strength properties, but reduces the permeation properties.

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Section: Introductionmentioning

confidence: 99%

Use of marble dust and linz-donawitz slag for the production of pervious concrete

Singh,

Kaur,

Singh

2023

IOP Conf. Ser.: Mater. Sci. Eng.

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“…In 2015, the construction industry significantly impacted the natural and built environment. In 2019, 16.6 million tonnes of waste were produced, constituting 38% of destruction, with 43% of those wastes ending up in landfills [1,2]. In the construction and demolition procedures, massive amounts of waste are generated.…”

Section: Introductionmentioning

confidence: 99%

The Mediating Role of Policy-Related Factors in the Relationship between Practice of Waste Generation and Sustainable Construction Waste Minimisation: PLS-SEM

et al. 2022

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As the construction industry grows, it produces large volumes of construction waste, which has a tremendous environmental impact and generates public concern in the neighbouring towns. The construction industry generates a significant volume of waste and faces a challenge with poor construction waste minimisation in order to prevent adverse environmental and dumping impacts worldwide. In developing countries, regional waste management systems have increased problems. Environmental pollution (air, water, and soil) and human health issues are caused by waste produced in a country as a result of different cultural, social, and religious activities. Prior studies were reviewed to choose dimensions and items for the data gathering instrument. A pilot test was conducted to identify potential questionnaire adjustments, and hypotheses were tested using structural equation modelling (SEM). A total of 220 Malaysian construction professionals answered the survey, which yielded the results. Five hypotheses have direct correlations based on the findings, three of which have a significant effect. Furthermore, the findings reveal that policy-related factors mediate the relationship between improving factors and sustainable construction waste minimisation. In contrast, they did not mediate the relationship between current practices/generation and sustainable construction waste management. The established framework can help improve construction waste management and help achieve global sustainable development goals. The data reveal that adopting preventive plans to reduce construction waste is one of the most important aspects of enhancing profitability. This study could aid construction industry players in evaluating waste management components during the construction and design stages of a building project.

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“…The amount of dephosphorization slag is approximately 100 ~ 150 kg/t of steel output, and it primarily composes of CaO-SiO 2 -FeO-P 2 O 5 slag system with relatively low basicity [1]. Dephosphorization slag can be used in many fields such as cement production, road construction, and civil engineering [2,3]. However, the present utilization ratio of dephosphorization slag was not high because of its physicochemical properties [4,5], and a large amount of dephosphorization slag is piled up or landfilled directly, which not only causes huge waste of resource but also brings serious environmental burden.…”

Section: Introductionmentioning

confidence: 99%

Dissolution behavior of nutrient elements from dephosphorization slag in the weakly acidic solution

Kong

et al. 2021

J Mater Cycles Waste Manag

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Dephosphorization slag is primarily composed of CaO-SiO 2 -FeO-P 2 O 5 slag system. As it contains abundant valuable components, dephosphorization slag is considered a potential material to restore the degraded acid soil. To efficiently supply Ca, Si, Fe, and P elements for acid soil, the dissolution behavior of dephosphorization slag with high P 2 O 5 content in the weakly acidic solution was investigated. It was found that the existence of citric acid could significantly promote the dissolution of slag in the aqueous solution. Most of the Ca, Si, and P was dissolved from slag at pH 5, and the Fe dissolution ratio reached 36.9%. In this case, the precipitation of Fe 3 (PO 4 ) 2 •8H 2 O was suppressed, and the majority of C 2 S-C 3 P solid phase and matrix phase was dissolved while wustite remained in the residue. The dissolution ratios of main elements from slag decreased dramatically as the pH increased. Only in the weakly acidic solution, it could make full use of dephosphorization slag, and large amounts of nutrient elements were simultaneously supplied. The dissolution ratios of nutrient elements decreased with the increase in particle size. The dissolution kinetics of slag in the citric acid solution followed the shrinking core model.

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Utilization of Linz–Donawitz slag from steel industry for waste minimization

Cited by 36 publications

References 103 publications

Use of marble dust and linz-donawitz slag for the production of pervious concrete

Use of marble dust and linz-donawitz slag for the production of pervious concrete

The Mediating Role of Policy-Related Factors in the Relationship between Practice of Waste Generation and Sustainable Construction Waste Minimisation: PLS-SEM

Dissolution behavior of nutrient elements from dephosphorization slag in the weakly acidic solution

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