Sustainable resource recovery from hydrated waste cement for calcium carbonate and silica extraction: Circular economy in construction
The rapidly expanding infrastructure sector in Thailand has boosted the consumption of ready-mix concrete, generating significant quantities of hydrated waste cement (HWC) during the truck washing process. HWC, composed primarily of calcium silicate hydrate (CSH), calcium hydroxide (CH), and fine sa...
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Elsevier
2024-12-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123024019297 |
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| author | Prinya Chindaprasirt Vanchai Sata Peerapong Jitsangiam Kamchai Nuithitikul Yanika Bamrungkit Ubolluk Rattanasak |
| author_facet | Prinya Chindaprasirt Vanchai Sata Peerapong Jitsangiam Kamchai Nuithitikul Yanika Bamrungkit Ubolluk Rattanasak |
| author_sort | Prinya Chindaprasirt |
| collection | DOAJ |
| description | The rapidly expanding infrastructure sector in Thailand has boosted the consumption of ready-mix concrete, generating significant quantities of hydrated waste cement (HWC) during the truck washing process. HWC, composed primarily of calcium silicate hydrate (CSH), calcium hydroxide (CH), and fine sand, is commonly disposed of in landfills, incurring additional costs and environmental concerns. This study explores acid and alkaline dissolutions as novel approaches to extract calcium and silicon, respectively. HWC samples were first subjected to treatment with various concentrations of hydrochloric acid (1%, 3%, and 5% HCl) to extract calcium compounds. The resulting Ca-rich filtrate was then converted to calcium carbonate (CaCO3). Optimal CaCO₃ yield was achieved with 5% HCl, though higher acid concentrations also led to the leaching of Fe from HWC, resulting in an orange shade in the final CaCO3 product and hindering the formation of pure calcite. Instead, a less stable polymorph of vaterite was primarily produced. Subsequent alkaline treatment of the acid-treated residue with 1 M sodium hydroxide (NaOH) produced a 39.8% yield of silica (SiO₂), though Fe contamination also impacted its purity. Despite these challenges, the study findings demonstrate the viability of HWC as a feedstock for the production of CaCO3 and SiO2. This method presents a promising approach to construction waste management while the environmentally friendly practices are promoted in the construction sector. This innovative HWC recycling method aligns with the principles of a circular economy, emphasizing resource conservation and sustainable waste management. |
| format | Article |
| id | doaj-art-2d85debbf1fc41deb4e015aa4c2a5d0a |
| institution | Kabale University |
| issn | 2590-1230 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj-art-2d85debbf1fc41deb4e015aa4c2a5d0a2024-12-19T11:00:20ZengElsevierResults in Engineering2590-12302024-12-0124103686Sustainable resource recovery from hydrated waste cement for calcium carbonate and silica extraction: Circular economy in constructionPrinya Chindaprasirt0Vanchai Sata1Peerapong Jitsangiam2Kamchai Nuithitikul3Yanika Bamrungkit4Ubolluk Rattanasak5Sustainable Infrastructure Research and Development Center, Department of Civil Engineering, Faculty of Engineering, Khon Kaen University, Khon Kaen 40002, Thailand; Academy of Science, Royal Society of Thailand, Dusit, Bangkok 10300, ThailandSustainable Infrastructure Research and Development Center, Department of Civil Engineering, Faculty of Engineering, Khon Kaen University, Khon Kaen 40002, ThailandCenter of Excellence in Natural Disaster Management, Department of Civil Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai 50200, ThailandBiomass and Oil Palm Center of Excellence, School of Engineering and Technology, Walailak University, Nakhon Si Thammarat 80160, ThailandDepartment of Chemistry, Faculty of Science, Burapha University, Chonburi 20131, ThailandDepartment of Chemistry, Faculty of Science, Burapha University, Chonburi 20131, Thailand; Corresponding author.The rapidly expanding infrastructure sector in Thailand has boosted the consumption of ready-mix concrete, generating significant quantities of hydrated waste cement (HWC) during the truck washing process. HWC, composed primarily of calcium silicate hydrate (CSH), calcium hydroxide (CH), and fine sand, is commonly disposed of in landfills, incurring additional costs and environmental concerns. This study explores acid and alkaline dissolutions as novel approaches to extract calcium and silicon, respectively. HWC samples were first subjected to treatment with various concentrations of hydrochloric acid (1%, 3%, and 5% HCl) to extract calcium compounds. The resulting Ca-rich filtrate was then converted to calcium carbonate (CaCO3). Optimal CaCO₃ yield was achieved with 5% HCl, though higher acid concentrations also led to the leaching of Fe from HWC, resulting in an orange shade in the final CaCO3 product and hindering the formation of pure calcite. Instead, a less stable polymorph of vaterite was primarily produced. Subsequent alkaline treatment of the acid-treated residue with 1 M sodium hydroxide (NaOH) produced a 39.8% yield of silica (SiO₂), though Fe contamination also impacted its purity. Despite these challenges, the study findings demonstrate the viability of HWC as a feedstock for the production of CaCO3 and SiO2. This method presents a promising approach to construction waste management while the environmentally friendly practices are promoted in the construction sector. This innovative HWC recycling method aligns with the principles of a circular economy, emphasizing resource conservation and sustainable waste management.http://www.sciencedirect.com/science/article/pii/S2590123024019297Hydrated waste cement (HWC)Waste valorizationWaste recyclingSustainable building materials |
| spellingShingle | Prinya Chindaprasirt Vanchai Sata Peerapong Jitsangiam Kamchai Nuithitikul Yanika Bamrungkit Ubolluk Rattanasak Sustainable resource recovery from hydrated waste cement for calcium carbonate and silica extraction: Circular economy in construction Results in Engineering Hydrated waste cement (HWC) Waste valorization Waste recycling Sustainable building materials |
| title | Sustainable resource recovery from hydrated waste cement for calcium carbonate and silica extraction: Circular economy in construction |
| title_full | Sustainable resource recovery from hydrated waste cement for calcium carbonate and silica extraction: Circular economy in construction |
| title_fullStr | Sustainable resource recovery from hydrated waste cement for calcium carbonate and silica extraction: Circular economy in construction |
| title_full_unstemmed | Sustainable resource recovery from hydrated waste cement for calcium carbonate and silica extraction: Circular economy in construction |
| title_short | Sustainable resource recovery from hydrated waste cement for calcium carbonate and silica extraction: Circular economy in construction |
| title_sort | sustainable resource recovery from hydrated waste cement for calcium carbonate and silica extraction circular economy in construction |
| topic | Hydrated waste cement (HWC) Waste valorization Waste recycling Sustainable building materials |
| url | http://www.sciencedirect.com/science/article/pii/S2590123024019297 |
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