Investigation of the key factors favouring the biocementing effect of microbially induced calcite precipitation when applied to mine tailings

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dc.contributor.authorZuñiga Barra, Hector
dc.contributor.authorVelastegui, Edgar
dc.contributor.authorToledo-Alarcón, Javiera
dc.contributor.authorJorquera, Lorena
dc.contributor.authorRivas, Mariella
dc.contributor.authorJeison, David
dc.date.accessioned2026-10-21T19:02:51Z
dc.date.available2026-10-21T19:02:51Z
dc.date.issued2025
dc.description.abstractRecent research has suggested the applicability of microbially induced calcite precipitation (MICP) to improve wind erosion resistance across diverse media, from clay to sandy soils. While various factors influencing MICP performance have been investigated, comprehensive studies considering the synergistic interactions between biocementation media composition, dosages, available urease activity, and urea-calcium ratios are limited. Consequently, identifying key factors governing MICP during tailings biocementation remains crucial for optimizing treatment strategies. This is specially the case for MICP application for mine tailings biocementation, due to the limited available research dealing with this substrate. This research studied the effect of several factors, when biocementing mine tailings, using a factorial design. The results confirm the key role of the biocementation media dosage and the urea-calcium ratio, and their synergistic interaction during biocementation of tailings, as they determine the calcium and inorganic carbon available to produce calcium precipitates. Biocementation of tailings by applying MICP substantially improved surface strength, leading to a drastic reduction in wind erosion resistance. These results confirm the potential of MICP to become an interesting tool to reduce windblown dust emissions from tailings deposits.
dc.description.sponsorshipANID/FONDECYT/1190664, ANID/FONDAP/15130015, ANID/FONDAP/1523A0001
dc.identifier.doi10.1016/j.apgeochem.2024.106258
dc.identifier.issn0883-2927
dc.identifier.urihttps://repositorioabierto.uantof.cl/handle/uantof/784
dc.language.isoen
dc.publisherElsevier
dc.relation.urihttps://www.sciencedirect.com/science/article/pii/S0883292724003639
dc.rights© 2024 Elsevier Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
dc.sourceApplied Geochemistry
dc.subjectMine dust
dc.subjectBiocementation
dc.subjectCalcite precipitation
dc.subjectErosion resistance
dc.subjectKey factors
dc.subjectMine tailings
dc.subjectRecent researches
dc.subjectSandy soils
dc.subjectSandysoil
dc.subjectSynergistic interaction
dc.subjectWind erosions
dc.subjectclay soil
dc.subjectdust
dc.subjectprecipitation (chemistry)
dc.subjectsandy soil
dc.subjecttailings
dc.subjectwind erosion
dc.titleInvestigation of the key factors favouring the biocementing effect of microbially induced calcite precipitation when applied to mine tailings
dc.typeArticle
oaire.citation.volume179
organization.identifier.rorhttps://ror.org/04eyc6d95
organization.legalNameUniversidad de Antofagasta
uantof.curation.reviewed2026-11-05
uantof.curation.reviewedByDiego León
uantof.identificator.departmentDepartamento de Biotecnología
uantof.identificator.facultyFacultad de Ciencias del Mar y Recursos Biológicos
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