Whey as an Alternative Nutrient Medium for Growth of Sporosarcina pasteurii and Its Effect on CaCO3 Polymorphism and Fly Ash Bioconsolidation

Whey in large quantities can cause environmental problems when discarded, because it reduces dissolved oxygen and aquatic life. Nonetheless, it could be used as an easily available and economical alternative to reduce culture medium costs in microbially induced calcium carbonate precipitation (MICP)...

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Autores principales: Chaparro, Sandra, Rojas, Hugo A., Caicedo, Gerardo, Romanelli, Gustavo Pablo, Pineda, Antonio, Luque, Rafael, Martínez, José J.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2021
Materias:
Química
Biogenic CaCO3
Polymorphism
Ureolytic bacteria
Whey
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/118981
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-118981
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Biogenic CaCO3
Polymorphism
Ureolytic bacteria
Whey
spellingShingle Química
Biogenic CaCO3
Polymorphism
Ureolytic bacteria
Whey
Chaparro, Sandra
Rojas, Hugo A.
Caicedo, Gerardo
Romanelli, Gustavo Pablo
Pineda, Antonio
Luque, Rafael
Martínez, José J.
Whey as an Alternative Nutrient Medium for Growth of Sporosarcina pasteurii and Its Effect on CaCO3 Polymorphism and Fly Ash Bioconsolidation
topic_facet Química
Biogenic CaCO3
Polymorphism
Ureolytic bacteria
Whey
description Whey in large quantities can cause environmental problems when discarded, because it reduces dissolved oxygen and aquatic life. Nonetheless, it could be used as an easily available and economical alternative to reduce culture medium costs in microbially induced calcium carbonate precipitation (MICP). In this work, a native Sporosarcina pasteurii was isolated and then cultured by using different proportions of whey (W) in nutrient broth (NB). The solids were characterized by XRD, FT-IR, TGA, and SEM. The potential applications in bioconsolidation were also studied. Whey concentration was directly related to CaCO3 production. Higher whey concentrations reduced calcium carbonate purity to nearly 80%. All experiments showed calcite and vaterite fractions, where a whey increment in the media increased calcite content and decreased vaterite content, causing a decrease in crystal size. MICP improved compressive strength (CS) in sand and fly ash. The best CS results were obtained by fly ash treated with 25 W-75 NB (37.2 kPa) and sand with 75W-25 NB (32.1 kPa). Whey changed crystal polymorphism in biogenic CaCO3 production. Material bioconsolidation depends on the CaCO3 polymorph, thus fly ash was effectively bioconsolidated by crystallization of vaterite and sand by crystallization of calcite.
format Articulo
Articulo
author Chaparro, Sandra
Rojas, Hugo A.
Caicedo, Gerardo
Romanelli, Gustavo Pablo
Pineda, Antonio
Luque, Rafael
Martínez, José J.
author_facet Chaparro, Sandra
Rojas, Hugo A.
Caicedo, Gerardo
Romanelli, Gustavo Pablo
Pineda, Antonio
Luque, Rafael
Martínez, José J.
author_sort Chaparro, Sandra
title Whey as an Alternative Nutrient Medium for Growth of Sporosarcina pasteurii and Its Effect on CaCO3 Polymorphism and Fly Ash Bioconsolidation
title_short Whey as an Alternative Nutrient Medium for Growth of Sporosarcina pasteurii and Its Effect on CaCO3 Polymorphism and Fly Ash Bioconsolidation
title_full Whey as an Alternative Nutrient Medium for Growth of Sporosarcina pasteurii and Its Effect on CaCO3 Polymorphism and Fly Ash Bioconsolidation
title_fullStr Whey as an Alternative Nutrient Medium for Growth of Sporosarcina pasteurii and Its Effect on CaCO3 Polymorphism and Fly Ash Bioconsolidation
title_full_unstemmed Whey as an Alternative Nutrient Medium for Growth of Sporosarcina pasteurii and Its Effect on CaCO3 Polymorphism and Fly Ash Bioconsolidation
title_sort whey as an alternative nutrient medium for growth of sporosarcina pasteurii and its effect on caco3 polymorphism and fly ash bioconsolidation
publishDate 2021
url http://sedici.unlp.edu.ar/handle/10915/118981
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