Environmental and human health risk evaluation of heavy metals in ceramsites from municipal solid waste incineration fly
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ORIGINAL PAPER
Environmental and human health risk evaluation of heavy metals in ceramsites from municipal solid waste incineration fly ash Yifei Shi . Yue Li . Xueliang Yuan . Junhua Fu . Qiao Ma . Qingsong Wang
Received: 5 December 2019 / Accepted: 16 June 2020 Ó Springer Nature B.V. 2020
Abstract Municipal solid waste incineration (MSWI) for power generation can reuse waste effectively, but it generates a large amount of fly ash enriched with heavy metals. If this fly ash cannot be treated properly, it can cause ecological damage and human health risk. According to the production of ceramsites from MSWI fly ash, an evaluation methodology is established, in which the influence of heavy metal stability on the environment is considered for the first time, and the health risks of heavy metals via different exposure pathways are distinguished. The results show that heavy metals in MSWI fly ash have moderate potential environmental risks to environment and have strong non-carcinogenic and carcinogenic risks both to children and adults. By contrast, heavy metals in ceramsites pose little risk to environment and human health. This paper explains some reasons of heavy metal content and leaching ratio change in ceramsite and also illustrates why stability is a concern through comparing the potential risk index
Y. Shi Y. Li X. Yuan (&) Q. Ma Q. Wang National Engineering Laboratory for Reducing Emissions from Coal Combustion, School of Energy and Power Engineering, Shandong University, 17923 Jingshi Road, Jinan 250061, China e-mail: [email protected] J. Fu Jinan Ecology and Environment Monitoring Center of Shandong Province, 17199 Lvyou Road, Jinan 250101, China
method and the improved evaluation method. This evaluation system can be applied to different production processes of building materials using solid hazardous waste and provides a quantitative evaluation method for reducing environment and human health risks of heavy metals. Keywords Municipal solid waste incineration fly ash Ceramsite Heavy metals Environmental risk assessment Health risk assessment
Introduction With the rapid economic growth of China, the volume of municipal solid waste (MSW) has increased rapidly. The total amount of MSW has increased from 148.6 million tonnes in 2003 to 215.2 million tonnes in 2017 (NBSC 2018) and is predicted to reach 480 million tonnes by 2030 (Yuan et al. 2019). Figure 1 shows the volume of MSW generated and MSW harmless disposal in China over the years. A quarter of cities in China do not have suitable landfill sites, and the occupied areas of MSW have accumulated more than 5 9 108 m2 of land (Xuan and Poon 2018). Because of the lack of sufficient landfill space and substantial support by government for MSWI for power generation, MSWI plays an increasingly important role in MSW management (Lu et al. 2017). From 2003 to 2017, the amount of MSWI
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Environ Geochem Health Fig. 1 The volume of MSW generated and MSW harmless disposal in China over years
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