Solidification of Hazardous Waste with the Aim of Material Utilization of Solidification Products

Hodul, Jakub; Dohnálková, Božena; Drochytka, Rostislav

doi:10.1016/j.proeng.2015.06.193

Cited by 15 publications

(7 citation statements)

References 1 publication

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“…The lowest UCS (13.75 MPa) was measured for the sample containing 25% of the slag (S25). Presence of closed porosity, as a result of the incomplete bonding between the cement and the slag, that caused a substantial reduction of UCS was confirmed in the authors’ previous work [31,32]. Besides, it must be taken into account that in the waste S/S processes, the lowest required compressive resistance for the final S/S solids is 0.35 MPa [33]; all the tested samples met this value.…”

Section: Resultssupporting

confidence: 59%

Assessment of Leaching Characteristics of Solidified Products Containing Secondary Alkaline Lead Slag

Štulović

Radovanović

Kamberović

et al. 2019

IJERPH

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Reuse of waste is one of the main principles of sustainable development and circular economy. Secondary alkaline lead slag is a hazardous waste generated in the recycling process of lead-acid batteries that may be suitable in construction materials. The environmental impact of the use of lead slag as a partial replacement of fine aggregates in the cement-based stabilization/solidification (S/S) process for the preparation of concrete was studied in this paper. Solidified products containing 10%, 15%, 20%, and 25% slag were laboratory tested by unconfined compressive strength (UCS) analyses and the Toxicity Characteristic Leaching Procedure (TCLP). At the same time, the leachability of toxic elements from solidified products with a high percent of slag was evaluated under environmental conditions for during one year. The results of the UCS and TCLP indicated that utilization of this type of slag in cement-based applications may be justified with its controlled addition. However, the described application of the slag was disputed due to the high release of As under high alkaline environmental conditions. Eh-pH analyses and the geochemical modeling using the software PHREEQC were evaluated, as well as the mechanism of pollutant (Pb, As) immobilization (precipitation, adsorption) as a function of pH conditions.

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Section: Resultssupporting

confidence: 59%

Assessment of Leaching Characteristics of Solidified Products Containing Secondary Alkaline Lead Slag

Štulović

Radovanović

Kamberović

et al. 2019

IJERPH

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“…At least 200 kg of sludge has generated per year. Since 2015, we consider to utilize that sludge using solidification methods [11], [12].…”

Section: Hazardous Waste Management: Utilization Of Wwtp Sludge Fomentioning

confidence: 99%

10 Environmental Innovations in Harmony of Sustainable Electricity Generation: An Experience of Combined-Cycle Power Plant of Priok, Indonesia

Permatasari¹,

Putranto²,

Tjahjonoputro³

2017

IJESD

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“…They are only stockpiled over large areas of land, indicating difficulties in the slag disposal process [17,18]. So, it was found in the composition of lead slag that toxic elements [19] pollute the environment [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Mathematical Approach to Solving the Problem of Waste-Free Processing of Metallurgical Wastes

Tileuberdi,

Zhaksylyk,

Pazylova

et al. 2024

Pol. J. Environ. Stud.

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Every year, the problem of environmental pollution from metallurgical waste is gaining momentum. In particular, these are metallurgical wastes containing residual metals. However, with the help of innovative methods of processing lead-containing slags, they can be turned into valuable resources with minimal impact on the environment. This article discusses the importance of recycling lead-containing slag and describes various methods of recycling. The scientific novelty of the article is to analyze the influence of the content of toxic metals, such as lead, chromium, zinc, and copper, in the products obtained after roasting around the waste storage. The results of the optimization of experimental data allowed to specify the composition of the mixture temperature of the process of ignition of residual and corrosion-protective metals chromium and nickel, with the indicators of dependencies in the three-dimensional model. The results of the mathematical planning of the processing of waste slag and galvanic sludge showed that the recovery of lead reached 93-95%, chromium-94-96% nickel-93%, and copper-90%. The obtained product is identified as a composite material by its elemental composition and microstructure. In the general structure of the surface, firing products are characterized by the presence of the aluminosilicate minerals melilite, merwinite, and ockermanite, as well as calcium monosilicates, in the form of irregular forms of light gray lamellar crystals.

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Solidification of Hazardous Waste with the Aim of Material Utilization of Solidification Products

Cited by 15 publications

References 1 publication

Assessment of Leaching Characteristics of Solidified Products Containing Secondary Alkaline Lead Slag

Assessment of Leaching Characteristics of Solidified Products Containing Secondary Alkaline Lead Slag

10 Environmental Innovations in Harmony of Sustainable Electricity Generation: An Experience of Combined-Cycle Power Plant of Priok, Indonesia

Mathematical Approach to Solving the Problem of Waste-Free Processing of Metallurgical Wastes

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