Techno-economic considerations on cement substitute obtained from waste refining

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12220%2F23%3A43907303" target="_blank" >RIV/60076658:12220/23:43907303 - isvavai.cz</a>
Alternative codes found
RIV/60076658:12310/23:43907303 RIV/75081431:_____/23:00002633
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0959652623014841?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0959652623014841?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jclepro.2023.137326" target="_blank" >10.1016/j.jclepro.2023.137326</a>

Result language
angličtina
Original language name
Techno-economic considerations on cement substitute obtained from waste refining
Original language description
Concrete production is the 3rd most intensive source of anthropogenic pollution, mainly due to its high energy and material demand. Previous struggles to decarbonize the concrete sector have identified that some 88% of the environmental burden is associated with cement production. Efforts to substitute some of the cement with char are of increased interest recently as some chars are considered carbon negative which could turn the entire concrete segment into a carbon-sequestering business. Here we transformed biowaste (fermentation residues) via waste heat (from flue gases at biogas plants) into char that was subsequently activated (by reactants made of scrap metal) to capture phosphorus (at wastewater treatment plant) into phosphates and thus produced novel a cement substitute. Changes in the strength characteristics of the concrete were analyzed and optimized based on robust semi-operational testing. The molecular dynamics simulations performed elucidate the mechanisms by which activation of char (FeCl3 and CaCl2) interacts with phosphorus at wastewater treatment plants (H2PO4- ) and generates phosphate-enriched char as a source of crystallization nuclei in concrete.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10511 - Environmental sciences (social aspects to be 5.7)

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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