Application of Sporosarcina pasteurii for the biomineralization of calcite in the treatment of waste concrete fines

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F25%3A00383194" target="_blank" >RIV/68407700:21110/25:00383194 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22330/25:43931575

Výsledek na webu

<a href="https://doi.org/10.1007/s11356-025-36102-2" target="_blank" >https://doi.org/10.1007/s11356-025-36102-2</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11356-025-36102-2" target="_blank" >10.1007/s11356-025-36102-2</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Application of Sporosarcina pasteurii for the biomineralization of calcite in the treatment of waste concrete fines

Popis výsledku v původním jazyce

In this study, we explored and described various parameters of microbially induced calcite precipitation (MICP) using the alkaliphilic bacterium Sporosarcina pasteurii DSM 33, which exhibits ureolytic activity, to stabilize and strengthen waste concrete fnes (WCF). Bacterial cell concentration, single and repeated addition of bacterial suspension, and pH adjustment were tested in stage 1 of the experimental agenda in order to tune parameters for sample preparation in stage 2 focused on the effect of MICP treatment duration (14, 30, 60, and 90 days). Two types of WCF materials differing in their physicochemical properties were used for the stabilization. The results of the EDS and XRD analyses confirmed the presence of CaCO3 crystals, which increased by about 10–12% over time, affecting the porosity, compactness, and strength of the formed composites. The XRD results also indicated that the WCF properties significantly influence the formation of the type of CaCO3 crystals, as supported by microscopy observations. This study highlights the potential of MICP technology to make concrete recycling more sustainable, aligning with the concept of a circular economy; however, the interplay between the WCF materials of various properties and bacterial activity must be further scrutinized.

Název v anglickém jazyce

Application of Sporosarcina pasteurii for the biomineralization of calcite in the treatment of waste concrete fines

Popis výsledku anglicky

In this study, we explored and described various parameters of microbially induced calcite precipitation (MICP) using the alkaliphilic bacterium Sporosarcina pasteurii DSM 33, which exhibits ureolytic activity, to stabilize and strengthen waste concrete fnes (WCF). Bacterial cell concentration, single and repeated addition of bacterial suspension, and pH adjustment were tested in stage 1 of the experimental agenda in order to tune parameters for sample preparation in stage 2 focused on the effect of MICP treatment duration (14, 30, 60, and 90 days). Two types of WCF materials differing in their physicochemical properties were used for the stabilization. The results of the EDS and XRD analyses confirmed the presence of CaCO3 crystals, which increased by about 10–12% over time, affecting the porosity, compactness, and strength of the formed composites. The XRD results also indicated that the WCF properties significantly influence the formation of the type of CaCO3 crystals, as supported by microscopy observations. This study highlights the potential of MICP technology to make concrete recycling more sustainable, aligning with the concept of a circular economy; however, the interplay between the WCF materials of various properties and bacterial activity must be further scrutinized.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

20903 - Bioproducts (products that are manufactured using biological material as feedstock) biomaterials, bioplastics, biofuels, bioderived bulk and fine chemicals, bio-derived novel materials

Projekt

<a href="/cs/project/GA22-02702S" target="_blank" >GA22-02702S: Mikrobiologicky indukované srážení kalcitu při recyklaci betonu pro produkci materiálů se zápornou uhlíkovou stopou</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Environmental Science and Pollution Research

ISSN

0944-1344

e-ISSN

1614-7499

Svazek periodika

32

Číslo periodika v rámci svazku

48

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

17

Strana od-do

27989-28005

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-86000268667