The application of sewage sludge as an expanding agent in the production of lightweight expanded clay aggregate mass

Latosińska, Jolanta; Żygadło, M.

doi:10.1080/09593330.2010.540716

Cited by 12 publications

(17 citation statements)

References 18 publications

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“…The closed porosity was calculated by difference between total and open porosity, and, according to Table 4, 7.9% for the internal part and 7.2% for the external shell were the values found. Similar figures were indicated in literature (Latosinska and Zygadlo, 2011) for lightweight aggregates incorporating sewage sludge as expanding agent. It is important to note that it was not possible to analyze adequately a whole aggregate through mercury porosimetry due to logistical limitations of the sample holder, whereas helium pycnometry indicated a real density of 2.44 g/cm 3 .…”

Section: Technological Properties Of Sintered Lwasupporting

confidence: 90%

“…In the literature there are several studies aiming to produce LWA using secondary materials (Ducman et al, 2002;Cheeseman and Virdi, 2005;Quina et al, 2006;Chiou et al, 2006;Huang et al, 2007;Qiao et al, 2008;Gonzalez-Corrochano et al, 2009Chen et al, 2010;Kourti and Cheeseman, 2010;Latosinska and Zygadlo, 2011;Tan et al, 2012;Hwang et al, 2012) such as combustion ashes, waste glass, sewage sludge ash, incinerator bottom ash, mining residues, heavy metal sludge, washing aggregate sludge, lignite coal fly ash, contaminated mine soil. In other cases, natural materials such as zeolitic rocks or volcanoclastites were considered as well (Gennaro et al, 2004(Gennaro et al, , 2005.…”

Section: Introductionmentioning

confidence: 99%

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Recycling of air pollution control residues from municipal solid waste incineration into lightweight aggregates

Quina¹,

Bordado²,

Quinta‐Ferreira³

2014

Waste Management

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This work focuses on the assessment of technological properties and on the leaching behavior of lightweight aggregates (LWA) produced by incorporating different quantities of air pollution control (APC) residues from municipal solid waste (MSW) incineration. Currently this hazardous waste has been mostly landfilled after stabilization/solidification. The LWA were produced by pelletizing natural clay, APC residues as-received from incineration plant, or after a washing treatment, a small amount of oil and water. The pellets were fired in a laboratory chamber furnace over calcium carbonate. The main technological properties of the LWA were evaluated, mainly concerning morphology, bulk and particle densities, compressive strength, bloating index, water adsorption and porosity. Given that APC residues do not own expansive (bloating) properties, the incorporation into LWA is only possible in moderate quantities, such as 3% as received or 5% after pre-washing treatment. The leaching behavior of heavy metals from sintered LWA using water or acid solutions was investigated, and despite the low acid neutralization capacity of the synthetic aggregates, the released quantities were low over a wide pH range. In conclusion, after a washing pre-treatment and if the percentage of incorporation is low, these residues may be incorporated into LWA. However, the recycling of APC residues from MSW incineration into LWA does not revealed any technical advantage.

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Section: Technological Properties Of Sintered Lwasupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Recycling of air pollution control residues from municipal solid waste incineration into lightweight aggregates

Quina¹,

Bordado²,

Quinta‐Ferreira³

2014

Waste Management

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“…The analysis of major elements of natural clay using XRF revealed the chemical composition indicated in Table 3. Thus, the requirement for bloating materials indicated in the literature (Riley, 1951;de' Gennaro et al, 2004;Chiou et al, 2006;Gonzalez-Corrochano et al, 2009;Latosinska and Zygadlo, 2011) is observed for clay since SiO 2 : 48-70%, Al 2 O 3 : 8-25% and fluxing oxides (Fe 2 O 3 + CaO + MgO + Na 2 O + K 2 O) 4.5-31%. Indeed, Fig.…”

Section: Characterization Of Natural Claymentioning

confidence: 95%

“…Although these residues generally have limited applications, thermal treatments can produce a material that is environmentally stable, and may be further used for producing ceramics (Quina et al, 2008a). In this scope, the production of lightweight aggregates (LWA) has been considered for many secondary materials (Wainwright and Cresswell, 2001;Ducman et al, 2002;Cheeseman and Virdi, 2005;Chiou et al, 2006;Quina et al, 2006;Huang et al, 2007;Qiao et al, 2008;Gonzalez-Corrochano et al, 2009Chen et al, 2010;Kourti and Cheeseman, 2010;Latosinska and Zygadlo, 2011;Tan et al, 2012) such as combustion ashes, waste glass, sewage sludge ash, incinerator bottom ash, mining residues, heavy metal sludge, washing aggregate sludge, lignite coal fly ash, and contaminated mine soil. Indeed, LWA can be defined as materials lighter than water and more porous than sand, gravel or ground rock (commonly referred to as "dense" aggregates) and can be produced from natural resources (e.g.…”

Section: Introductionmentioning

confidence: 99%

Compatibility analysis of municipal solid waste incineration residues and clay for producing lightweight aggregates

Quina

Almeida²,

Santos³

et al. 2014

Applied Clay Science

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This work provides insight into the most important properties of air pollution control (APC) residues from municipal solid waste incineration (MSWI) and clay used at industrial level aiming at producing a ceramic material known as lightweight aggregates (LWA). Both clay and APC residues were characterized to assess the most important chemical, physical, thermal and mineralogical properties to evaluate their compatibility. The maximum percentage of incorporation tested was 10% of APC residues. The results showed that the waste does not own bloating properties and it is not expectable other improvements into the technological properties of LWA, since the fluxing components contribution is high and the amount of silica is low. Although during the thermal analysis of the APC residues the loss on weight is high (about 32% until 1200°C), they seem not to be suitable as a gas-release additive, once for 10% of incorporation the external shell appears to be significantly broken. The environmental impact due to leaching of pollutants from the LWA incorporating less than or equal to 5% of waste appears not to be relevant. In conclusion, the results showed that synthetic LWA may be considered as a possible approach to recycling of APC residues in case of low amount of waste is used or if a pre-treatment is performed.

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“…After a series of assessments of the cost and engineering characteristics, Hung claimed that the lightweight aggregate concrete met the green, environmentally friendly and recycling requirements and was suitable for areas like Taiwan with frequent earthquakes. Moreover, sewage sludge can be applied as an expanding agent in the production of lightweight expanded clay aggregate mass, and the optimum amount of sludge applied to a raw material used in such production was 5% to 15% of dry mass [7]. Yang [8] studied the addition of sewage sludge ash with other stabilized materials such as cement, fly ash and lime to improve soft subgrade soils and suggested future engineering applications.…”

Section: Introductionmentioning

confidence: 99%

Effects on cement after partial replacement with burned joss paper ash

Lin

Huang²,

Luo³

et al. 2012

Environmental Technology

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In the last ten years, as international environmental protection consciousness has increased, the study and applications of green building, green construction materials and energy savings as well as reduction of carbon dioxide have become urgent issues for governments. In Taiwan, joss papers are burned in more than 11,731 registered shrines or temples in traditional Chinese deity or ancestor worship ceremonies during special holidays or occasions. Instead of placing this large amount of burned joss paper ash (BJPA) in landfills, this study proposes recycling BJPA by replacing some cement with calcined BJPA (CBJPA) in mortar specimens. After BJPA samples were calcined at a high kiln temperature, mortar samples were created using CBJPA to replace cement at seven different levels: 0%, 5%, 10%, 15%, 20%, 25% and 30%. Tests like setting time and compressive strength were performed for macro-analyses; scanning electron microscopy-energy dispersive spectroscopy, X-ray diffraction and thermal gravimetric analysis/differential thermal analysis were carried out for the microstructure and chemical composition analyses. The test results showed that the compressive strengths of specimens with different levels of CBJPA replacement were apparently less than those of the control group (0% CBJPA) at all curing times. The compressive strength and setting time both decreased as the fraction of CBJPA in the mortar increased. Furthermore, because the hydration product did not cement and the mortar specimen structure was loose, the expected strength improvement from the pozzolanic reaction provided by the CBJPA was not clearly observed.

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The application of sewage sludge as an expanding agent in the production of lightweight expanded clay aggregate mass

Cited by 12 publications

References 18 publications

Recycling of air pollution control residues from municipal solid waste incineration into lightweight aggregates

Recycling of air pollution control residues from municipal solid waste incineration into lightweight aggregates

Compatibility analysis of municipal solid waste incineration residues and clay for producing lightweight aggregates

Effects on cement after partial replacement with burned joss paper ash

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