Bioaccumulation of chromium(III) from aqueous solutions of a leather wastewater treatment plant by Saccharomyces cerevisiae yeast / Patrizia Jankovic in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXV, N° 11 (11/2020)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXV, N° 11 (11/2020) . - p. 413-417 Titre : Bioaccumulation of chromium(III) from aqueous solutions of a leather wastewater treatment plant by Saccharomyces cerevisiae yeast Type de document : texte imprimé Auteurs : Patrizia Jankovic, Auteur ; Reno Spinosi, Auteur ; Anna Bacardit, Auteur Année de publication : 2020 Article en page(s) : p. 413-417 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bioaccumulation Biosorbant Chrome trivalent Eaux usées -- Décontamination Eaux usées -- Epuration Levure (Agent de fermentation) Métaux lourds Microorganismes Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : With many industries discharging heavy metals into natural water resources, heavy metals have been found to accumulate in various living organisms which can ultimately threaten human life and pose a big threat to the environment. Thus, in the pursuit of a solution to the above mentioned problem, bioaccumulation has emerged as an interesting option for the removal of heavy metals from wastewater. In this paper, the effectiveness of the yeast Saccharomyces cerevisiae in the bioaccumulation of Cr3+ has been tested. Also, different factors influencing Cr3+ uptake have been discussed. This work has demonstrated that Saccharomyces cerevisiae is an effective Cr3+ biosorbent for tannery wastewater. The conditions of use of this yeast to achieve optimal chromium (III) absorption are: i) when a growth of the biosorbent equivalent to a similar concentration of Cr3+ is obtained, which contains the residual water that needs to be treated; ii) the smaller the biosorbent is the better the biosorption; iii) the uptake of Cr3+ is more efficient when no extra growth medium is added to the wastewater; iv) the longer the exposure period of the yeast to Cr3+ , the bigger the Cr3+ reduction. Since Saccharomyces cerevisiae is an inexpensive, readily available source of biomass, this discovery could be of great use for a low-budget and efficient wastewater treatment system Note de contenu : - EXPERIMENTAL : Microorganisms and growth conditions - Preparation of the chromium standard solution - Cr3+ uptake experiments with nonadapted and adapted saccharomyces cerevisiae - Cr3+ uptake experiments with different biosorbent doses - Cr3+ uptake experiments with different compsitions of growth medium - Cr3+ uptake experiments with different contact times - RESULTS AND DISCUSSION : Cr3+ uptake experiments with non-adapted and adapted saccharomyces cerevisiae - Cr3+ uptake experiments with different biosorbent dose - Cr3+ uptake experiments with different composition of growth medium - Cr3+ uptake experiments with different contact time DOI : https://doi.org/10.34314/jalca.v115i11.4182 En ligne : https://drive.google.com/file/d/1ZllTv5MXrGBIp_6pO0wDqha4Dm8D18LF/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34848 [article]

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