Characterization of calcium-containing phases in alkali-activated municipal solid waste incineration bottom ash binder through chemical extraction and deconvoluted Fourier transform infrared spectra
It has been reported that municipal solid waste incineration bottom ash (IBA) can be a potential precursor for alkali-activated materials (AAM). This study investigates chemical composition and structure of calcium-containing phases in an alkali-activated IBA (AA-IBA) binder by a novel combination o...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2020
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/139877 |
| _version_ | 1826117172815986688 |
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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 municipal solid waste incineration bottom ash (IBA) can be a potential precursor for alkali-activated materials (AAM). This study investigates chemical composition and structure of calcium-containing phases in an alkali-activated IBA (AA-IBA) binder by a novel combination of selective chemical extraction and Fourier transform infrared (FTIR) spectral subtraction and deconvolution. Salicylic acid/methanol extraction is used to isolate the calcium-containing phases from the AA-IBA binder. X-ray powder diffraction and FTIR spectroscopy are used for sample characterization. Spectral subtraction is carried out to assign FTIR peaks of calcium-containing phases and deconvolution is used to discover various individual Si-O peaks hidden in the single broad FTIR peak. Results show that the AA-IBA consists of about 20 wt.% calcium silicate hydrate (C-S-H) and pirssonite (Na2Ca(CO3)2·2H2O). Chemical structure of the C-S-H in AA-IBA is found to be broadly similar to that in aged Portland cement paste, with possibly a higher degree of polymerization of the silicate chains. The methodology established in this study is significant and can greatly benefit the development of sustainable construction materials because many industry by-products and solid wastes are Si and/or Al rich, which could be potential AAM precursor. |
| first_indexed | 2024-10-01T04:23:18Z |
| format | Journal Article |
| id | ntu-10356/139877 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:23:18Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1398772020-05-22T05:58:33Z Characterization of calcium-containing phases in alkali-activated municipal solid waste incineration bottom ash binder through chemical extraction and deconvoluted Fourier transform infrared spectra Zhu, Weiping Chen, Xu Struble, Leslie J. Yang, En-Hua School of Civil and Environmental Engineering Engineering::Civil engineering Alkali Activation Municipal Solid Waste Incineration Bottom Ash It has been reported that municipal solid waste incineration bottom ash (IBA) can be a potential precursor for alkali-activated materials (AAM). This study investigates chemical composition and structure of calcium-containing phases in an alkali-activated IBA (AA-IBA) binder by a novel combination of selective chemical extraction and Fourier transform infrared (FTIR) spectral subtraction and deconvolution. Salicylic acid/methanol extraction is used to isolate the calcium-containing phases from the AA-IBA binder. X-ray powder diffraction and FTIR spectroscopy are used for sample characterization. Spectral subtraction is carried out to assign FTIR peaks of calcium-containing phases and deconvolution is used to discover various individual Si-O peaks hidden in the single broad FTIR peak. Results show that the AA-IBA consists of about 20 wt.% calcium silicate hydrate (C-S-H) and pirssonite (Na2Ca(CO3)2·2H2O). Chemical structure of the C-S-H in AA-IBA is found to be broadly similar to that in aged Portland cement paste, with possibly a higher degree of polymerization of the silicate chains. The methodology established in this study is significant and can greatly benefit the development of sustainable construction materials because many industry by-products and solid wastes are Si and/or Al rich, which could be potential AAM precursor. NRF (Natl Research Foundation, S’pore) 2020-05-22T05:58:32Z 2020-05-22T05:58:32Z 2018 Journal Article Zhu, W., Chen, X., Struble, L. J., & Yang, E.-H. (2018). Characterization of calcium-containing phases in alkali-activated municipal solid waste incineration bottom ash binder through chemical extraction and deconvoluted Fourier transform infrared spectra. Journal of Cleaner Production, 192, 782-789. doi:10.1016/j.jclepro.2018.05.049 0959-6526 https://hdl.handle.net/10356/139877 10.1016/j.jclepro.2018.05.049 2-s2.0-85048167427 192 782 789 en Journal of Cleaner Production © 2018 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Civil engineering Alkali Activation Municipal Solid Waste Incineration Bottom Ash Zhu, Weiping Chen, Xu Struble, Leslie J. Yang, En-Hua Characterization of calcium-containing phases in alkali-activated municipal solid waste incineration bottom ash binder through chemical extraction and deconvoluted Fourier transform infrared spectra |
| title | Characterization of calcium-containing phases in alkali-activated municipal solid waste incineration bottom ash binder through chemical extraction and deconvoluted Fourier transform infrared spectra |
| title_full | Characterization of calcium-containing phases in alkali-activated municipal solid waste incineration bottom ash binder through chemical extraction and deconvoluted Fourier transform infrared spectra |
| title_fullStr | Characterization of calcium-containing phases in alkali-activated municipal solid waste incineration bottom ash binder through chemical extraction and deconvoluted Fourier transform infrared spectra |
| title_full_unstemmed | Characterization of calcium-containing phases in alkali-activated municipal solid waste incineration bottom ash binder through chemical extraction and deconvoluted Fourier transform infrared spectra |
| title_short | Characterization of calcium-containing phases in alkali-activated municipal solid waste incineration bottom ash binder through chemical extraction and deconvoluted Fourier transform infrared spectra |
| title_sort | characterization of calcium containing phases in alkali activated municipal solid waste incineration bottom ash binder through chemical extraction and deconvoluted fourier transform infrared spectra |
| topic | Engineering::Civil engineering Alkali Activation Municipal Solid Waste Incineration Bottom Ash |
| url | https://hdl.handle.net/10356/139877 |
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