Physiochemical characterization and heavy metals leaching potential of municipal solid waste incinerated bottom ash (MSWI-BA) when utilized in road construction

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dc.contributor.authorZhu, Yating
dc.contributor.authorZhao, Yao
dc.contributor.authorZhao, Chen
dc.contributor.authorGupta, Rishi
dc.date.accessioned2020-07-10T22:46:29Z
dc.date.copyright2020en_US
dc.date.issued2020
dc.description.abstractIn this study, the physicochemical properties, microstructure, and heavy metal leaching potential of various municipal solid waste incinerated-bottom ash (MSWI-BA) particle sizes were detected. The environmental risks that possibly result from the utilization of MSWI-BA aggregate in road construction are discussed. The air-dried MSWI-BA was sieved into four groups, including 4.75–9.5 mm, 2.36–4.75 mm, 0.075–2.36 mm, and < 0.075 mm. X-ray fluorescence (XRF), X-ray diffraction (XRD), and scanning electron microscopy (SEM) analyses were conducted. It was found that the main elements of MSWI-BA are Ca, Si, and Al; the major heavy metals are Zn, Cu, Cr, and Pb, and the main mineral compositions are quartz and calcite. Even though the major elements were found to be related to MSWI-BA particle size, the micropores, attached particles, and hydration products were shown to be independent on the particle size. The standard leaching test and a simulated leaching experiment with four solid/liquid ratios were implemented to study the leaching behavior of Zn, Cu, Pb, and Cr. Results showed that the leaching characteristics of selected metals were affected by the species of metal, MSWI-BA particle size, solid/liquid ratio, and the test method. The MSWI-BA aggregate was found to be an appropriate substitute material for natural aggregate in road construction due to its low metal leaching potential.en_US
dc.description.embargo2021-02-10
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipThis research was funded by the Natural Science Foundation of the Jiangsu Higher Education Institutions of China, grant number [17KJB580007]; the Basic Research Program (Natural Science Foundation) of Jiangsu Province, China, grant number [BK20170933]; the Science and Technology Plan Program of Ministry of Housing and Urban-Rural Development of the People’s Republic of China, grant number [2018-K9-074; 2019-K-160]; the Postgraduate Research & Practice Innovation Program of Jiangsu Province, China, grant number (KYCX17_0867); and the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD). The authors would like to thank the Civil Engineering Experimental Center of Nanjing Forestry University, China for all of the support provided to us.en_US
dc.identifier.citationZhu, Y., Zhao, Y., Zhao, C., & Gupta R. (2020). Physiochemical characterization and heavy metals leaching potential of municipal solid waste incinerated bottom ash (MSWI-BA) when utilized in road construction. Environmental Science and Pollution Research, 27, 14184- 14197. https://doi.org/10.1007/s11356-020-08007-9.en_US
dc.identifier.urihttps://doi.org/10.1007/s11356-020-08007-9
dc.identifier.urihttp://hdl.handle.net/1828/11923
dc.language.isoenen_US
dc.publisherEnvironmental Science and Pollution Researchen_US
dc.subjectMSWI-BA (municipal solid waste incinerated-bottom ash)en_US
dc.subjectphysiochemical propertiesen_US
dc.subjectmicrostructureen_US
dc.subjectleaching characteristicsen_US
dc.subjectheavy metalsen_US
dc.subjectroad construction materialen_US
dc.titlePhysiochemical characterization and heavy metals leaching potential of municipal solid waste incinerated bottom ash (MSWI-BA) when utilized in road constructionen_US
dc.typePostprinten_US

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