Comparative leaching characteristics of fly/bottom ashes from municipal solid waste incineration under various environmental stresses

With proper leaching tests, health hazards associated with municipal solid waste incineration (MSWI) ashes, i.e., incineration bottom ashes (IBA) and incineration fly ashes (IFA), can be quantitatively defined. However, it must be coupled with specific environmental scenarios to draw the proper conc...

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Main Authors: Yin, Ke, Dou, Xiaomin, Chan, Wei Ping, Chang, Victor Wei‑Chung
Other Authors: Nanyang Environment and Water Research Institute
Format: Article
Language:English
Published: 2021
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Online Access:https://hdl.handle.net/10356/150360
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Institution: Nanyang Technological University
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spelling sg-ntu-dr.10356-1503602021-05-22T20:11:36Z Comparative leaching characteristics of fly/bottom ashes from municipal solid waste incineration under various environmental stresses Yin, Ke Dou, Xiaomin Chan, Wei Ping Chang, Victor Wei‑Chung Nanyang Environment and Water Research Institute Residues and Resource Reclamation Centre Engineering::Environmental engineering Incineration Bottom Ashes Application Metal Recovery With proper leaching tests, health hazards associated with municipal solid waste incineration (MSWI) ashes, i.e., incineration bottom ashes (IBA) and incineration fly ashes (IFA), can be quantitatively defined. However, it must be coupled with specific environmental scenarios to draw the proper conclusions. Several environmental stresses based on current management of MSWI ashes were herein simulated with laboratory leaching studies to understand their impacts. The impact of bulk metal recovery on the IBA leaching potential was firstly investigated, suggesting the promoted release for certain metals including those with a relative high content (> 1000 mg/kg) such as Ba, Cu, Pb and Zn. The impact of seawater was also simulated. Most metal release was altered with the new chemistry established. Batch leaching tests were further performed under both salty and acidic environment to understand their aggregated effects, indicating an overwhelming influence from seawater buffering. Lastly, batch leaching tests of the IBA/IFA mixture were performed under various mass ratios, while data were compared with those by their individuals and the theoretical leaching value, unveiling different leaching characteristics during landfill disposal. Hereby, a comprehensive characteristic metal leaching potential was achieved under various ash managements. It provides insights into environmental risks relevant to their current practices. National Environmental Agency (NEA) Accepted version The authors would like to thank National Environmental Agency, Singapore for financially supporting this work. 2021-05-21T06:41:18Z 2021-05-21T06:41:18Z 2019 Journal Article Yin, K., Dou, X., Chan, W. P. & Chang, V. W. (2019). Comparative leaching characteristics of fly/bottom ashes from municipal solid waste incineration under various environmental stresses. Journal of Material Cycles and Waste Management, 22(1), 46-55. https://dx.doi.org/10.1007/s10163-019-00915-4 1438-4957 https://hdl.handle.net/10356/150360 10.1007/s10163-019-00915-4 2-s2.0-85073939303 1 22 46 55 en Journal of Material Cycles and Waste Management © 2019 Springer. This is a post-peer-review, pre-copyedit version of an article published in Journal of Material Cycles and Waste Management. The final authenticated version is available online at: http://dx.doi.org/10.1007/s10163-019-00915-4. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Environmental engineering
Incineration Bottom Ashes Application
Metal Recovery
spellingShingle Engineering::Environmental engineering
Incineration Bottom Ashes Application
Metal Recovery
Yin, Ke
Dou, Xiaomin
Chan, Wei Ping
Chang, Victor Wei‑Chung
Comparative leaching characteristics of fly/bottom ashes from municipal solid waste incineration under various environmental stresses
description With proper leaching tests, health hazards associated with municipal solid waste incineration (MSWI) ashes, i.e., incineration bottom ashes (IBA) and incineration fly ashes (IFA), can be quantitatively defined. However, it must be coupled with specific environmental scenarios to draw the proper conclusions. Several environmental stresses based on current management of MSWI ashes were herein simulated with laboratory leaching studies to understand their impacts. The impact of bulk metal recovery on the IBA leaching potential was firstly investigated, suggesting the promoted release for certain metals including those with a relative high content (> 1000 mg/kg) such as Ba, Cu, Pb and Zn. The impact of seawater was also simulated. Most metal release was altered with the new chemistry established. Batch leaching tests were further performed under both salty and acidic environment to understand their aggregated effects, indicating an overwhelming influence from seawater buffering. Lastly, batch leaching tests of the IBA/IFA mixture were performed under various mass ratios, while data were compared with those by their individuals and the theoretical leaching value, unveiling different leaching characteristics during landfill disposal. Hereby, a comprehensive characteristic metal leaching potential was achieved under various ash managements. It provides insights into environmental risks relevant to their current practices.
author2 Nanyang Environment and Water Research Institute
author_facet Nanyang Environment and Water Research Institute
Yin, Ke
Dou, Xiaomin
Chan, Wei Ping
Chang, Victor Wei‑Chung
format Article
author Yin, Ke
Dou, Xiaomin
Chan, Wei Ping
Chang, Victor Wei‑Chung
author_sort Yin, Ke
title Comparative leaching characteristics of fly/bottom ashes from municipal solid waste incineration under various environmental stresses
title_short Comparative leaching characteristics of fly/bottom ashes from municipal solid waste incineration under various environmental stresses
title_full Comparative leaching characteristics of fly/bottom ashes from municipal solid waste incineration under various environmental stresses
title_fullStr Comparative leaching characteristics of fly/bottom ashes from municipal solid waste incineration under various environmental stresses
title_full_unstemmed Comparative leaching characteristics of fly/bottom ashes from municipal solid waste incineration under various environmental stresses
title_sort comparative leaching characteristics of fly/bottom ashes from municipal solid waste incineration under various environmental stresses
publishDate 2021
url https://hdl.handle.net/10356/150360
_version_ 1701270613593686016