Techno-economic aspects of concrete lightweighting by char enrichment with phosphates from wastewater

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12220%2F25%3A43910009" target="_blank" >RIV/60076658:12220/25:43910009 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60076658:12510/25:43910009

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S2666821125000092?pes=vor&utm_source=scopus&getft_integrator=scopus" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2666821125000092?pes=vor&utm_source=scopus&getft_integrator=scopus</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ceja.2025.100712" target="_blank" >10.1016/j.ceja.2025.100712</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Techno-economic aspects of concrete lightweighting by char enrichment with phosphates from wastewater

Popis výsledku v původním jazyce

Portland cement (PC) production is a major contributor to environmental pollution due to its resource and energy - intensive nature, ranking as the 3rd largest source. Humans excrete approximately 5 g of phosphorus (P) day-1, which is often precipitated by salts into hardly applicable minerals such as struvite (in developed countries) or contributes to eutrophication (in developing countries). Worldwide, biogas plants produce a billion tons of digestate daily. Proposed solutions involve dewatering, charring and activation of digestate that is subsequently used to sorb P from wastewater and used as a PC substitute. Unique laboratory findings indicate that iron phosphates (FeP) on charred digestate can enhance concrete strength parameters (up to 80 %); reducing weight (- 18 %) and production cost (- 4 %) while turning carbon emissions into carbon sequestration. The mechanisms behind the experimental results are investigated through molecular modeling. It is revealed that interactions of char and FeP enhance aggregates, forming stronger contact ion pairs and increasing concrete strength and durability. Although the concept brings many technical, economic, and environmental improvements, further analyses are needed, especially regarding scaling up and the durability of the concrete.

Název v anglickém jazyce

Techno-economic aspects of concrete lightweighting by char enrichment with phosphates from wastewater

Popis výsledku anglicky

Portland cement (PC) production is a major contributor to environmental pollution due to its resource and energy - intensive nature, ranking as the 3rd largest source. Humans excrete approximately 5 g of phosphorus (P) day-1, which is often precipitated by salts into hardly applicable minerals such as struvite (in developed countries) or contributes to eutrophication (in developing countries). Worldwide, biogas plants produce a billion tons of digestate daily. Proposed solutions involve dewatering, charring and activation of digestate that is subsequently used to sorb P from wastewater and used as a PC substitute. Unique laboratory findings indicate that iron phosphates (FeP) on charred digestate can enhance concrete strength parameters (up to 80 %); reducing weight (- 18 %) and production cost (- 4 %) while turning carbon emissions into carbon sequestration. The mechanisms behind the experimental results are investigated through molecular modeling. It is revealed that interactions of char and FeP enhance aggregates, forming stronger contact ion pairs and increasing concrete strength and durability. Although the concept brings many technical, economic, and environmental improvements, further analyses are needed, especially regarding scaling up and the durability of the concrete.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

50204 - Business and management

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Chemical Engineering Journal Advances

ISSN

2666-8211

e-ISSN

2666-8211

Svazek periodika

22

Číslo periodika v rámci svazku

May 2025

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

1-8

Kód UT WoS článku

001426415300001

EID výsledku v databázi Scopus

2-s2.0-85217257910