Quantitative characterization of aluminosilicate gels in alkali-activated incineration bottom ash through sequential chemical extractions and deconvoluted nuclear magnetic resonance spectra
It has been reported that incineration bottom ash (IBA) from municipal solid waste can be a potential precursor for the synthesis of alkali-activated materials. It has been reported that the resulting alkali-activated IBA (AA-IBA) binder consists of 20 wt% calcium-containing phases. It is expected t...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2021
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| Online Access: | https://hdl.handle.net/10356/152125 |
| _version_ | 1811684306840453120 |
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| author | Zhu, Weiping Chen, Xu Struble, Leslie J. Yang, En-Hua |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Zhu, Weiping Chen, Xu Struble, Leslie J. Yang, En-Hua |
| author_sort | Zhu, Weiping |
| collection | NTU |
| description | It has been reported that incineration bottom ash (IBA) from municipal solid waste can be a potential precursor for the synthesis of alkali-activated materials. It has been reported that the resulting alkali-activated IBA (AA-IBA) binder consists of 20 wt% calcium-containing phases. It is expected that aluminosilicate phases may coexist in the complex AA-IBA binder. Differentiating aluminosilicate phases from C-(A)-S-H phases could be challenging, for in general the two phases largely overlap in the spectra. In this study, aluminosilicate gels in a complex AA-IBA are separated and quantitatively characterized based on sequential chemical extractions, thermogravimetric analysis and nuclear magnetic resonance spectral subtraction and deconvolution. It concludes that the resulting AA-IBA binder consists of 17 wt% aluminosilicate gel with a Si/Al ratio of 2.52 resembling an aged alkali-activated coal fly ash. As understanding gel compositions in a binder is important, the methodology developed in this study is of significance and would benefit the development of alternative binders incorporating solid wastes and industry by-products. |
| first_indexed | 2024-10-01T04:26:32Z |
| format | Journal Article |
| id | ntu-10356/152125 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:26:32Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1521252021-07-16T01:46:57Z Quantitative characterization of aluminosilicate gels in alkali-activated incineration bottom ash through sequential chemical extractions and deconvoluted nuclear magnetic resonance spectra Zhu, Weiping Chen, Xu Struble, Leslie J. Yang, En-Hua School of Civil and Environmental Engineering Engineering::Civil engineering Municipal Solid Waste Incineration Bottom Ash It has been reported that incineration bottom ash (IBA) from municipal solid waste can be a potential precursor for the synthesis of alkali-activated materials. It has been reported that the resulting alkali-activated IBA (AA-IBA) binder consists of 20 wt% calcium-containing phases. It is expected that aluminosilicate phases may coexist in the complex AA-IBA binder. Differentiating aluminosilicate phases from C-(A)-S-H phases could be challenging, for in general the two phases largely overlap in the spectra. In this study, aluminosilicate gels in a complex AA-IBA are separated and quantitatively characterized based on sequential chemical extractions, thermogravimetric analysis and nuclear magnetic resonance spectral subtraction and deconvolution. It concludes that the resulting AA-IBA binder consists of 17 wt% aluminosilicate gel with a Si/Al ratio of 2.52 resembling an aged alkali-activated coal fly ash. As understanding gel compositions in a binder is important, the methodology developed in this study is of significance and would benefit the development of alternative binders incorporating solid wastes and industry by-products. National Environmental Agency (NEA) National Research Foundation (NRF) The authors would like to acknowledge financial supports from the Environment Technology Research Programme (ETRP 1301 104), National Environment Agency of Singapore and SinBerBEST, and National Research Foundation of Singapore. Ms Zhao Aiqin at Nanyang Technological University helped conduct the TGA tests. Dr Andre Sutrisno at University of Illinois at Urbana-Champaign and Ms Han Yanhui at National University of Singapore helped perform the NMR tests, and their contributions are greatly appreciated. 2021-07-16T01:46:57Z 2021-07-16T01:46:57Z 2019 Journal Article Zhu, W., Chen, X., Struble, L. J. & Yang, E. (2019). Quantitative characterization of aluminosilicate gels in alkali-activated incineration bottom ash through sequential chemical extractions and deconvoluted nuclear magnetic resonance spectra. Cement and Concrete Composites, 99, 175-180. https://dx.doi.org/10.1016/j.cemconcomp.2019.03.014 0958-9465 https://hdl.handle.net/10356/152125 10.1016/j.cemconcomp.2019.03.014 2-s2.0-85063332913 99 175 180 en ETRP 1301 104 Cement and Concrete Composites © 2019 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Civil engineering Municipal Solid Waste Incineration Bottom Ash Zhu, Weiping Chen, Xu Struble, Leslie J. Yang, En-Hua Quantitative characterization of aluminosilicate gels in alkali-activated incineration bottom ash through sequential chemical extractions and deconvoluted nuclear magnetic resonance spectra |
| title | Quantitative characterization of aluminosilicate gels in alkali-activated incineration bottom ash through sequential chemical extractions and deconvoluted nuclear magnetic resonance spectra |
| title_full | Quantitative characterization of aluminosilicate gels in alkali-activated incineration bottom ash through sequential chemical extractions and deconvoluted nuclear magnetic resonance spectra |
| title_fullStr | Quantitative characterization of aluminosilicate gels in alkali-activated incineration bottom ash through sequential chemical extractions and deconvoluted nuclear magnetic resonance spectra |
| title_full_unstemmed | Quantitative characterization of aluminosilicate gels in alkali-activated incineration bottom ash through sequential chemical extractions and deconvoluted nuclear magnetic resonance spectra |
| title_short | Quantitative characterization of aluminosilicate gels in alkali-activated incineration bottom ash through sequential chemical extractions and deconvoluted nuclear magnetic resonance spectra |
| title_sort | quantitative characterization of aluminosilicate gels in alkali activated incineration bottom ash through sequential chemical extractions and deconvoluted nuclear magnetic resonance spectra |
| topic | Engineering::Civil engineering Municipal Solid Waste Incineration Bottom Ash |
| url | https://hdl.handle.net/10356/152125 |
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