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dc.contributor.author
Wang, Zhixin
dc.contributor.author
Zhang, Zijia
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Xia, Ling
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Farias Maria Eugenia
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Torres Sanchez, Rosa Maria
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Belfiore, Carolina
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Montes, María Luciana
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Tian, Xiang
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Chen, Jinhui
dc.contributor.author
Shaoxian Song
dc.date.available
2023-08-28T14:08:19Z
dc.date.issued
2022-07
dc.identifier.citation
Wang, Zhixin; Zhang, Zijia; Xia, Ling; Farias Maria Eugenia; Torres Sanchez, Rosa Maria; et al.; Sulfate induced surface modification of Chlorella for enhanced mercury immobilization; Elsevier; Journal of Environmental Chemical Engineering; 10; 4; 7-2022; 1-11
dc.identifier.issn
2213-3437
dc.identifier.uri
http://hdl.handle.net/11336/209507
dc.description.abstract
In this study, living Chlorella sorokiniana FK with an elevated concentration of cell envelop sulfur sites, induced by adding excess sulfate to the medium, was used as biosorbents for the removal of Hg(II) from aqueous solution. The cellular surface sulfur-based sites density of the obtained biosorbents was determined through selective sulfhydryl site-blocking and potentiometric titration. The sorption was conducted as terms of pH and initial Hg(II) concentration, and characterized by SEM, AFM, HRTEM, FT-IR, XRD and XPS. The results showed that Chlorella possessed the highest sulfhydryl site concentration and showed the largest capacity for Hg(II) detoxification in the 40 mg/L sulfur culture (termed B-40) with 74.2% sulfate consumption for the growth of algae. The equilibrium data for the studied biosorbents was adequately represented by the Langmuir isotherm and B-40 exhibited the highest sorption capacity for Hg(II), 2 times greater than that of no sulfate culture Chlorella at the optimized pH 6. Mercury biomineral particles (HgS, HgSO4 and Hg2SO5) were formed on the cellular envelop which induced mainly by sulfur-based groups (-SH, -OSO3-) for enhanced Hg(II) immobilization. These results suggested that surface sites concentration of algae can be manipulated by the available nutrients, and therefore cells with induced high densities of sulfhydryl sites represented a promising and low cost biosorbent for the effective removal and immobilization of Hg and possibly other heavy metals.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
MERCURY REMOVAL
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MICROALGAE
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SULFATE
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SULFUR-BASED FUNCTIONAL GROUPS
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SURFACE PROPERTY
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Otras Ingeniería de los Materiales
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Ingeniería de los Materiales
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INGENIERÍAS Y TECNOLOGÍAS
dc.title
Sulfate induced surface modification of Chlorella for enhanced mercury immobilization
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-07-07T18:00:55Z
dc.journal.volume
10
dc.journal.number
4
dc.journal.pagination
1-11
dc.journal.pais
Países Bajos
dc.description.fil
Fil: Wang, Zhixin. Wuhan University Of Technology; China
dc.description.fil
Fil: Zhang, Zijia. Wuhan University Of Technology; China
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Fil: Xia, Ling. Wuhan University Of Technology; China
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Fil: Farias Maria Eugenia. Limla; Argentina
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Fil: Torres Sanchez, Rosa Maria. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Tecnología de Recursos Minerales y Cerámica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Tecnología de Recursos Minerales y Cerámica; Argentina
dc.description.fil
Fil: Belfiore, Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentina
dc.description.fil
Fil: Montes, María Luciana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; Argentina
dc.description.fil
Fil: Tian, Xiang. Wuhan University Of Technology; China
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Fil: Chen, Jinhui. Wuhan University Of Technology; China
dc.description.fil
Fil: Shaoxian Song. Wuhan University Of Technology; China
dc.journal.title
Journal of Environmental Chemical Engineering
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jece.2022.108156
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