Solidification/stabilization of hazardous waste sludge obtained from a chemical industry

Bayar, Senem; Talınlı, İlhan

doi:10.1007/s10098-012-0494-1

Cited by 13 publications

(3 citation statements)

References 16 publications

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“…S/S is used to treat several types of wastes, prior to landfilling or reuse. They are especially applied to hazardous wastes, in order to decrease the release of toxic compounds, reducing the contamination of soil and water (Bayar and Talinli, 2013; Poon et al, 2001). According to the US Environmental Protection Agency (USEPA, 1979), this can be accomplished by different mechanisms, including: Chemical reactions that lead to the formation of inert compounds; reduction of solubility by changing pH and redox potential; wrapping the waste with coating.…”

Section: Introductionmentioning

confidence: 99%

Non-conventional stabilisation/solidification treatment of industrial wastes with residual powdered paints

Vaccari

Castro

2019

Waste Manag Res

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Stabilisation/solidification technologies are widely used for rendering industrial wastes inert. In this study, residual powdered paints were applied to treat different types of industrial wastes by stabilisation/solidification: Fumes from steel-making process, sludge from coagulation/flocculation treatments and powders from brushing and polishing metallic objects. Stabilisation/solidification trials were performed both under static conditions and in motion. It was observed that the residual paints could polymerise well in 60 min at 120 °C. The addition of water during the treatment resulted in highly porous and friable materials and, therefore, is not recommended. The mixture between wastes and paint influenced polymerisation. Specific heating conditions needed to be tested for each waste, varying from 80 °C to 150 °C. Significant reduction on leachability after treatment could be reached in most cases. Reduction on chlorides release up to 92.0% were achieved. Contents of other elements on the leachates, such as copper, molybdenum, nickel, zinc and dissolved organic carbon, could also be reduced in percentages up to 96.9%, 97.6%, 98.8%, 95.7% and 96.9%, respectively. For some types of wastes, however, especially those containing high contents of copper and mineral oils, the treatment was ineffective. Polymerisation in motion apparently improved binding capacity, but tests with increased content of paints are recommended to reduce the release of dissolved organic carbon.

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Section: Introductionmentioning

confidence: 99%

Non-conventional stabilisation/solidification treatment of industrial wastes with residual powdered paints

Vaccari

Castro

2019

Waste Manag Res

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“…Cement curing performs a vitally significant role in hazardous waste disposal and is an important environmentally sound treatment method with relatively low disposal costs and long-term physicochemical stability of its cured products. − The cement encapsulates the heavy metals in the hydrated silicate by solidification and inclusion. The hydration reaction begins with the formation of cement products such as hydrated calcium silicate, hydrated calcium aluminate, and hydrated lime, and then the alkaline Ca(OH) 2 continues to decompose to form hydroxides and Ca ions, which reform immiscible gels with the hydrated calcium silicate and hydrated calcium aluminate, thereby immobilizing and reducing the toxicity of the leaching of the fly ash. , The manufacturing procedure of the MSWI FA cement is shown in Figure .…”

Section: Treatment and Disposal Of Heavy Metals In Fly Ashmentioning

confidence: 99%

Advances and Outlook of Heavy Metal Treatment Technology from Municipal Solid Waste Incineration Fly Ash: A Review

Xiao,

Huang,

Cheng

et al. 2023

Energy Fuels

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With the global industrialization process and socioeconomic development, the amount of municipal solid waste (MSW) generated is growing significantly. With the growth trend of municipal solid waste, incineration is widely used for waste treatment but produces a large amount of municipal solid waste incineration fly ash, which contains heavy metals that can seriously harm human health and the ecological environment. In this Review, the current situation of MSWI fly ash disposal is reviewed, and the technologies for harmless disposal and resource utilization of heavy metals in MSWI fly ash are summarized, including solidification stabilization, leaching extraction, heat treatment, combination methods, etc. We meticulously summarized the recent progress of various incineration fly ash disposal technologies, analyzed the difficulties and solutions in formulating various feasible technical strategies, and compared their potential in the safe, environmentally friendly, and economical utilization of MSW fly ash resources. Furthermore, we also provide an outlook on the potential challenges and prospects of future progress in the harmless disposal and resource recycling of fly ash.

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“…As an important harmless treatment method, cement solidification has a relatively low disposal cost and its solidified product has long-term physical, chemical, and biological stability [77], which plays a very important role in the disposal of hazardous waste [78][79][80][81]. As a procedure for treating hazardous waste, the disposal of MSWI fly ash by solidification has also undergone long-term research.…”

Section: Cement Solidificationmentioning

confidence: 99%

Review of harmless treatment of municipal solid waste incineration fly ash

Zhang

Fang

et al. 2020

Waste Dispos. Sustain. Energy

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Incineration is widely adopted in municipal solid waste management, which produces large amounts of municipal solid waste incineration (MSWI) fly ash. The harmless treatment of MSWI fly ash requires the appropriate disposal of heavy metals and dioxins that are enriched in fly ash. This review summarizes recently developed harmless disposal methods for MSWI fly ash including solidification/stabilization, thermal treatment, and separation/extraction. In addition, we discuss heavy metal and dioxin fixation, and the removal capacity of fly ash via solidification/stabilization (including cement solidification, chemical stabilization, hydrothermal processes, and mechano-chemical methods), thermal treatment (including sintering, fuel-burning, or electric melting/vitrification), and separation/extraction (including water-washing, chemical reagent leaching, biological leaching, electrodialysis separation, chemical reagent extraction, and nanomaterials extraction). The advantages and disadvantages of different harmless treatment methods are compared and future research prospects and suggestions are summarized. This review provides general guidelines for the harmless treatment of MSWI fly ash in the future.

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Solidification/stabilization of hazardous waste sludge obtained from a chemical industry

Cited by 13 publications

References 16 publications

Non-conventional stabilisation/solidification treatment of industrial wastes with residual powdered paints

Non-conventional stabilisation/solidification treatment of industrial wastes with residual powdered paints

Advances and Outlook of Heavy Metal Treatment Technology from Municipal Solid Waste Incineration Fly Ash: A Review

Review of harmless treatment of municipal solid waste incineration fly ash

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