Organic carbon leaching behavior from incinerator bottom ash

Guimaraes, A.L.; Okuda, Tetsuji; Nishijima, Wataru; Okada, Minoru

doi:10.1016/j.jhazmat.2006.03.047

Cited by 21 publications

(13 citation statements)

References 27 publications

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“…Several studies have reported that organic carbon in MSWI ash originated from unburned substances. 8,30) These characteristics of MSWI ash stimulated interest in analyzing bacterial diversity and in identifying the resident bacteria under such conditions. 16S rDNA similarity analysis was done on the collected sequences using the BLAST algorithm.…”

Section: Discussionmentioning

confidence: 99%

“…1) In addition, MSWI bottom ash, leachates contain total organic carbon (TOC) at high concentrations, in a range of 200 to 800 mg/l, [5][6][7] and this has recently received increased attention with respect to the reduction of biochemical oxygen demand (BOD) and chemical oxygen demand (COD). 8) Since MSWI fly ash also contains a wide variety of valuable heavy metals (e.g., Cd, Cr, Cu, Zn, and Ni), it has been proposed as a candidate for metal recovery. 9,10) Thus, microbial activity in MSWI ash has been extensively studied from the point of view of bioleaching, in which autotrophic bacteria such as Thiobacillus species [10][11][12] and heterotrophic fungi such as Aspergillus and Penicillium species 13,14) were investigated.…”

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confidence: 99%

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BacillusSpecies Predominated in an Incineration Ash Layer at a Landfill

Mizuno

Fukuda

Fujii

et al. 2008

Bioscience, Biotechnology, and Biochemistry

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

BacillusSpecies Predominated in an Incineration Ash Layer at a Landfill

Mizuno

Fukuda

Fujii

et al. 2008

Bioscience, Biotechnology, and Biochemistry

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“…CaCO 3 is present in the as-received fine IBA as a result of carbonation during ageing. This provides significant buffering capacity to acid addition due to the formation of Ca 2+ , HCO 3 À and OH À ions when water is added (Guimaraes et al, 2006;Van der Sloot and Kosson, 2012).…”

Section: Discussionmentioning

confidence: 99%

“…This reduction in ANC from calcining fine IBA:glass is primarily due to the decomposition of CaCO 3 to CaO and CO 2 that occurs during calcining, combined with subsequent encapsulation and incorporation of Ca 2+ in both amorphous and crystalline phases present in the processed fine IBA (Guimaraes et al, 2006;Van der Sloot and Kosson, 2012).…”

Section: Discussionmentioning

confidence: 99%

Production of pyroxene ceramics from the fine fraction of incinerator bottom ash

et al. 2015

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16The fine fraction of incinerator bottom ash (IBA) generated from dry discharge systems can be 17 transformed into an inert material suitable for the production of hard, dense ceramics. Processing 22Processed powders show minimal leaching and can be pressed and sintered to form dense (>2.5 g/cm 33The combustion of residual waste in Energy-from-Waste (EfW) facilities is widely used in many 34 developed countries. There are currently 30 EfW facilities operating in Switzerland and ~450 plants in 35Europe. EfW processes residual municipal solid waste (MSW), which is the material remaining after the 36 maximum amount of commercially viable recyclable materials have been extracted, and the heat 37 generated is used to produce electricity and/or steam and/or hot water for district heating schemes (Nixon 38 et al., 2013). The incinerator bottom ash (IBA) produced is a heterogeneous mix of ceramic, glass, brick, 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 F o r P e e r R e v i e w 2 concrete, clinker and particles of fused materials. IBA also contains significant levels of ferrous (~ 10 wt. 40%) and non-ferrous metals (~1-3 wt. %), mainly Cu and Al. 41The amount of IBA produced is typically 20 to 25 wt. % of the input residual MSW to an EfW plant, 42and it is normally quenched into water on exiting the combustion chamber, producing wet-discharged 43IBA. Alternative dry discharge systems operate at some EfW facilities and these have significant 44 advantages including more efficient metal recovery and lower operating energy requirements (Allegrinia 45 et al., 2014). A schematic diagram of the Martin grate-based combustion and dry bottom ash discharge 46 system operating at the Monthey EfW plant in Switzerland is shown in Figure 1 (Blatter et.al., 2014). A 47 nearly metal-free fine fraction of IBA (<1 mm) is separated by an air separator and a dust extraction. The 48 coarse fraction, in which almost all metals are present, undergoes appropriate separating processes in 49 order to extract the metals. The fine IBA fraction from the Monthey plant is currently reused as a cement 50 substitute together with cement for stabilizing neutral washed filter ashes prior to disposal in a hazardous 51 landfill (Koralewska et.al, 2014). 52The production of ceramics and glass-ceramics from IBA has been extensively reported. The ceramic 53 manufacturing process normally involves milling raw materials to reduce particle size and increase 54 sintering reactivity, spray drying to produce granules suitable for pressing, and sintering of the compacted 55 powder. The production of glass-ceramic involves the production of a glass by melting the raw materials 56 at high temperature, followed by subsequent heat treatment at lower temperatures to induce 57 crystallization effects. A major advantage of these types of processing is their ability ...

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“…Organic carbon leaching from MSWI bottom ash was found to be ruled by two mechanisms (Guimaraes et al, 2006). One is the leaching dependent on Ca leaching and the other is the leaching independent of Ca leaching.…”

Section: Introductionmentioning

confidence: 95%

Chemical Stabilization of Bottom Ash from Municipal Solid Waste Incineration and Prediction of DOC Leaching in Landfill Sites

Guimaraes

Okuda

Nishijima

et al. 2010

J. of Wat. & Envir. Tech.

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It is well known that it takes long time to stabilize landfill and meet the standard for leachate after landfilling is stopped. Moreover, the time required to meet the standard is not predicted. In this research, the rapid small-scale column test (RSSCT) was applied and was found to predict the dissolved organic carbon (DOC) leaching from municipal solid waste incineration bottom ash in a simulated landfill site. Acid washing with hydrochloric acid remarkably reduced the DOC leaching from bottom ash. According to the RSCCT, it was estimated that the acid washing would reduce the time for DOC stabilization of bottom ash by about 80% in a simulated landfill situation.

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Organic carbon leaching behavior from incinerator bottom ash

Cited by 21 publications

References 27 publications

BacillusSpecies Predominated in an Incineration Ash Layer at a Landfill

BacillusSpecies Predominated in an Incineration Ash Layer at a Landfill

Production of pyroxene ceramics from the fine fraction of incinerator bottom ash

Chemical Stabilization of Bottom Ash from Municipal Solid Waste Incineration and Prediction of DOC Leaching in Landfill Sites

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