Techno-economic considerations on cement substitute obtained from waste refining

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/60076658:12310/23:43907303 RIV/75081431:_____/23:00002633

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Techno-economic considerations on cement substitute obtained from waste refining

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Techno-economic considerations on cement substitute obtained from waste refining

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Cleaner Production

ISSN

0959-6526

e-ISSN

1879-1786

Svazek periodika

412

Číslo periodika v rámci svazku

AUG 1 2023

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

—

Kód UT WoS článku

001006083100001

EID výsledku v databázi Scopus

2-s2.0-85159156387