Optimization of municipal solid waste incineration bottom ash geopolymer with granulated blast furnace slag (GGBFS): Microstructural development and heavy metal solidification mechanism
The enormous increase in municipal solid waste (MSW) has resulted in a large volume of incinerator bottom ash (MSWIBA). With the widespread adoption of trash incineration technologies, the disposal of significant amounts of MSWIBA is inevitable to minimize groundwater and soil contamination from dir...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-07-01
|
| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509525002219 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849765469432578048 |
|---|---|
| author | Yue Li Xinyu Yan Man Wan Ling Fan Junjie Hu Zhen Liang Jun Liu Feng Xing |
| author_facet | Yue Li Xinyu Yan Man Wan Ling Fan Junjie Hu Zhen Liang Jun Liu Feng Xing |
| author_sort | Yue Li |
| collection | DOAJ |
| description | The enormous increase in municipal solid waste (MSW) has resulted in a large volume of incinerator bottom ash (MSWIBA). With the widespread adoption of trash incineration technologies, the disposal of significant amounts of MSWIBA is inevitable to minimize groundwater and soil contamination from direct landfills.MSWIBA has an oxide composition similar to silicate cement and might be utilized as an alkali-activated materials (AAMs). However, because MSWIBA has a low active calcium content, the mechanical characteristics of AAMs made from MSWIBA alone are unsatisfactory. As a result, this work investigated the optimization of mechanical characteristics and microstructure of alkali-activated bottom ash material (AABAM) by integrating the high calcium mineral GGBFS. The environmental friendliness of AABAM was assessed using mechanical compressive strength tests, XRD, SEM, EDS, MIP, and heavy metal leaching. The results showed that the inclusion of GGBFS greatly improved the early strength of AABAM, with compressive strength increasing by up to 663.7 % to 43.0 MPa after 28 days of curing. Meanwhile, GGBFS boosted gel formation and optimized AABAM porosity to better enclose the metal elements, with Cr solidification efficiency reaching 86.4 %. The synergistic treatment of MSWIBA and GGBFS not only resulted in the efficient use of solid waste resources but also provided a novel option for municipal solid waste management. |
| format | Article |
| id | doaj-art-12c4b6b1e60f4ff78490f0e984cc75bc |
| institution | DOAJ |
| issn | 2214-5095 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj-art-12c4b6b1e60f4ff78490f0e984cc75bc2025-08-20T03:04:51ZengElsevierCase Studies in Construction Materials2214-50952025-07-0122e0442310.1016/j.cscm.2025.e04423Optimization of municipal solid waste incineration bottom ash geopolymer with granulated blast furnace slag (GGBFS): Microstructural development and heavy metal solidification mechanismYue Li0Xinyu Yan1Man Wan2Ling Fan3Junjie Hu4Zhen Liang5Jun Liu6Feng Xing7CCCC, Construction Co. Ltd, Guangzhou 511466, PR ChinaGuangdong Engineering Technology Research Centre of Municipal Rail Transit Lean Construction, Guangzhou 511466, PR ChinaCCCC, Construction Co. Ltd, Guangzhou 511466, PR ChinaGuangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, PR China; Corresponding author.Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, PR ChinaGuangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, PR ChinaGuangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, PR China; State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, PR ChinaGuangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, PR ChinaThe enormous increase in municipal solid waste (MSW) has resulted in a large volume of incinerator bottom ash (MSWIBA). With the widespread adoption of trash incineration technologies, the disposal of significant amounts of MSWIBA is inevitable to minimize groundwater and soil contamination from direct landfills.MSWIBA has an oxide composition similar to silicate cement and might be utilized as an alkali-activated materials (AAMs). However, because MSWIBA has a low active calcium content, the mechanical characteristics of AAMs made from MSWIBA alone are unsatisfactory. As a result, this work investigated the optimization of mechanical characteristics and microstructure of alkali-activated bottom ash material (AABAM) by integrating the high calcium mineral GGBFS. The environmental friendliness of AABAM was assessed using mechanical compressive strength tests, XRD, SEM, EDS, MIP, and heavy metal leaching. The results showed that the inclusion of GGBFS greatly improved the early strength of AABAM, with compressive strength increasing by up to 663.7 % to 43.0 MPa after 28 days of curing. Meanwhile, GGBFS boosted gel formation and optimized AABAM porosity to better enclose the metal elements, with Cr solidification efficiency reaching 86.4 %. The synergistic treatment of MSWIBA and GGBFS not only resulted in the efficient use of solid waste resources but also provided a novel option for municipal solid waste management.http://www.sciencedirect.com/science/article/pii/S2214509525002219Municipal solid waste incineration bottom ashAlkali - activated materialGround granulated blast - furnace slag particleHeavy metal |
| spellingShingle | Yue Li Xinyu Yan Man Wan Ling Fan Junjie Hu Zhen Liang Jun Liu Feng Xing Optimization of municipal solid waste incineration bottom ash geopolymer with granulated blast furnace slag (GGBFS): Microstructural development and heavy metal solidification mechanism Case Studies in Construction Materials Municipal solid waste incineration bottom ash Alkali - activated material Ground granulated blast - furnace slag particle Heavy metal |
| title | Optimization of municipal solid waste incineration bottom ash geopolymer with granulated blast furnace slag (GGBFS): Microstructural development and heavy metal solidification mechanism |
| title_full | Optimization of municipal solid waste incineration bottom ash geopolymer with granulated blast furnace slag (GGBFS): Microstructural development and heavy metal solidification mechanism |
| title_fullStr | Optimization of municipal solid waste incineration bottom ash geopolymer with granulated blast furnace slag (GGBFS): Microstructural development and heavy metal solidification mechanism |
| title_full_unstemmed | Optimization of municipal solid waste incineration bottom ash geopolymer with granulated blast furnace slag (GGBFS): Microstructural development and heavy metal solidification mechanism |
| title_short | Optimization of municipal solid waste incineration bottom ash geopolymer with granulated blast furnace slag (GGBFS): Microstructural development and heavy metal solidification mechanism |
| title_sort | optimization of municipal solid waste incineration bottom ash geopolymer with granulated blast furnace slag ggbfs microstructural development and heavy metal solidification mechanism |
| topic | Municipal solid waste incineration bottom ash Alkali - activated material Ground granulated blast - furnace slag particle Heavy metal |
| url | http://www.sciencedirect.com/science/article/pii/S2214509525002219 |
| work_keys_str_mv | AT yueli optimizationofmunicipalsolidwasteincinerationbottomashgeopolymerwithgranulatedblastfurnaceslagggbfsmicrostructuraldevelopmentandheavymetalsolidificationmechanism AT xinyuyan optimizationofmunicipalsolidwasteincinerationbottomashgeopolymerwithgranulatedblastfurnaceslagggbfsmicrostructuraldevelopmentandheavymetalsolidificationmechanism AT manwan optimizationofmunicipalsolidwasteincinerationbottomashgeopolymerwithgranulatedblastfurnaceslagggbfsmicrostructuraldevelopmentandheavymetalsolidificationmechanism AT lingfan optimizationofmunicipalsolidwasteincinerationbottomashgeopolymerwithgranulatedblastfurnaceslagggbfsmicrostructuraldevelopmentandheavymetalsolidificationmechanism AT junjiehu optimizationofmunicipalsolidwasteincinerationbottomashgeopolymerwithgranulatedblastfurnaceslagggbfsmicrostructuraldevelopmentandheavymetalsolidificationmechanism AT zhenliang optimizationofmunicipalsolidwasteincinerationbottomashgeopolymerwithgranulatedblastfurnaceslagggbfsmicrostructuraldevelopmentandheavymetalsolidificationmechanism AT junliu optimizationofmunicipalsolidwasteincinerationbottomashgeopolymerwithgranulatedblastfurnaceslagggbfsmicrostructuraldevelopmentandheavymetalsolidificationmechanism AT fengxing optimizationofmunicipalsolidwasteincinerationbottomashgeopolymerwithgranulatedblastfurnaceslagggbfsmicrostructuraldevelopmentandheavymetalsolidificationmechanism |