Effect of weathering treatment on the fractionation and leaching behavior of copper in municipal solid waste incinerator bottom ash

Yao, Jun; Wen-bing, LI; Tang, Mengling; Fang, Chengran; Feng, Huajun; Shen, Dongsheng

doi:10.1016/j.chemosphere.2010.08.038

Cited by 37 publications

(11 citation statements)

References 22 publications

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“…5a), a high content of metal and electrical devices is considered to be responsible for the high leaching observed (Sabbas et al, 2003). Moreover, this element is commonly linked to the release of dissolved organic carbon, as it usually forms strong complexes with organic substances such as hydrophilic and hydrophobic acids (Johnson et al, 1996;Meima et al, 1999;Yao et al, 2010;De Windt et al, 2011). Hence, given the high content of unburned organic matter in FBA, Cu is likely to dissolve and form corresponding ligands.…”

Section: Resultsmentioning

confidence: 99%

Use of weathered and fresh bottom ash mix layers as a subbase in road constructions: Environmental behavior enhancement by means of a retaining barrier

et al. 2014

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The presence of neoformed cement-like phases during the weathering of non-stabilized freshly quenched bottom ash favors the development of a bound pavement material with improved mechanical properties. Use of weathered and freshly quenched bottom ash mix layers placed one over the other allowed the retention of leached heavy metals and metalloids by means of a reactive percolation barrier. The addition of 50% of weathered bottom ash to the total subbase content diminished the release of toxic species to below environmental regulatory limits. The mechanisms of retention and the different processes and factors responsible of leaching strongly depended on the contaminant under concern as well as on the chemical and physical factors. Thus, the immediate reuse of freshly quenched bottom ash as a subbase material in road constructions is possible, as both the mechanical properties and long-term leachability are enhanced.

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Section: Resultsmentioning

confidence: 99%

Use of weathered and fresh bottom ash mix layers as a subbase in road constructions: Environmental behavior enhancement by means of a retaining barrier

et al. 2014

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“…The contents of individual elements in the fresh BA sample were analyzed after the sample was digested as described previously [5]. In brief, about 0.5 g of air-dried sample was added into a Teflon beaker.…”

Section: Methodsmentioning

confidence: 99%

“…However, with the increase in landfill costs, scarcity of landfill sites, and enhancement of public environmental consciousness, the government of China has been urged to consider alternative disposal methods. Incineration, due to its primary advantages of hygienic control, volume and mass reduction, and energy recovery, has become an attractive method of MSW disposal [4, 5]. During an incineration process, various solid residues, such as BA, fly ash (FA), and air pollution control residues, are produced.…”

Section: Introductionmentioning

confidence: 99%

Impact of MSWI Bottom Ash Codisposed with MSW on Landfill Stabilization with Different Operational Modes

Yao

Malik

et al. 2014

BioMed Research International

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The aim of the study was to investigate the impact of municipal solid waste incinerator (MSWI) bottom ash (BA) codisposed with municipal solid waste (MSW) on landfill stabilization according to the leachate quality in terms of organic matter and nitrogen contents. Six simulated landfills, that is, three conventional and three recirculated, were employed with different ratios of MSWI BA to MSW. The results depicted that, after 275-day operation, the ratio of MSWI BA to fresh refuse of 1 : 10 (V : V) in the landfill was still not enough to provide sufficient acid-neutralizing capacity for a high organic matter composition of MSW over 45.5% (w/w), while the ratio of MSWI BA to fresh refuse of 1 : 5 (V : V) could act on it. Among the six experimental landfills, leachate quality only was improved in the landfill operated with the BA addition (the ratio of MSWI BA to fresh refuse of 1 : 5 (V : V)) and leachate recirculation.

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“…Sunkiųjų metalų (Pb, Cd) pasiskirstymas dviejų skirtingų frakcijų (0-2 mm; 2-6 mm) neapdorotų dugno pelenų ir šlako mėginiuose nustatomas pagal nuoseklaus vienpakopio išplovimo procedūrą (angl. Sequential extraction procedure) (Tessier et al 1979;Yao et al 2010;Yao et al 2012;) …”

Section: įVadasunclassified

Fresh Bottom Ash Characteristics Dependence on Fractional Composition

Seniūnaitė

Vasarevičius

2017

Science - Future of Lithuania

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2017 © Straipsnio autoriai. Leidėjas VGTU leidykla "Technika". Šis straipsnis yra atvirosios prieigos straipsnis, turintis Kūrybinių bendrijų (Creative Commons) licenciją (CC BY-NC 4.0), kuri leidžia neribotą straipsnio ar jo dalių panaudą su privaloma sąlyga nurodyti autorių ir pirminį šaltinį. Straipsnis ar jo dalys negali būti naudojami komerciniams tikslams. Deginant atliekų tūris sumažėja -65-70 %, o masė net 85-90 % (Ginés et al. 2009;Wei et al. 2011;Santos et al. 2013). Procese susidaro du pagrindiniai atliekų srautai: pavojingi -lakieji pelenai (angl. fly ash) ir nepavojingidugno pelenai ir šlakas (angl. bottom ash). Dugno pelenais ir šlaku yra įvardijamos degimo kameroje degimo proceso pabaigoje iškrentančios deginimo proceso atliekos bei nedeganti liekana, susikaupusi degimo kameros dugne. Pelenus ir šlaką taip pat gali sudaryti per grotelių kiaurymes iškrentančios dalelės bei nepavojingosios garo katilo dulkės. Dugno pelenai sudaro 85 % proceso liekanų masės (vidutiniškai 16-35 % pradinės kuro masės) (Rambaldi et al. 2010;Yang et al. 2012;Schabbach et al. 2012;Wei et al. 2011). MOKSLAS -LIETUVOS ATEITIS SCIENCE -FUTURE OF LITHUANIADeginant atliekas gauti dugno pelenai ir šlakas yra daugiakomponentė sistema, kurią sudaro išsilydžiusių produktų ir nesudegusių dalelių mišinys, taip pat medžia-gos, kurios deginimo procese išliko beveik nepakitusios (geležis, spalvotieji ir sunkieji metalai, stiklas, keramikos nuolaužos ir mažos statybinių atliekų dalelės) .Dugno pelenų ir šlako savybės labiausiai priklauso nuo deginamų atliekų srauto sudėties.

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Effect of weathering treatment on the fractionation and leaching behavior of copper in municipal solid waste incinerator bottom ash

Cited by 37 publications

References 22 publications

Use of weathered and fresh bottom ash mix layers as a subbase in road constructions: Environmental behavior enhancement by means of a retaining barrier

Use of weathered and fresh bottom ash mix layers as a subbase in road constructions: Environmental behavior enhancement by means of a retaining barrier

Impact of MSWI Bottom Ash Codisposed with MSW on Landfill Stabilization with Different Operational Modes

Fresh Bottom Ash Characteristics Dependence on Fractional Composition

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