Removal of triphenylmethane dyes in single-dye and dye-metal mixtures by live and dead cells of metal-tolerant Penicillium simplicissimum

In the absence of various metal ions, live cells of Penicillium simplicissimum decolorized Crystal Violet (CV), Methyl Violet (MV), Malachite Green (MG) and Cotton Blue (CB) (75.6-90.8%, 0.5-2 h) more efficiently than dead cells (43.9-75.2%, 4 h). Cu(II) enhanced CB removal by live and dead cells (6...

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Bibliographic Details
Published inSeparation science and technology Vol. 55; no. 13; pp. 2410 - 2420
Main Authors Chen, Si Hui, Cheow, Yuen Lin, Ng, Si Ling, Ting, Adeline Su Yien
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis 01.09.2020
Taylor & Francis Ltd
Subjects
Binding sites
Bioremediation
Cadmium
Carbonyl compounds
Carbonyls
Cells
Chromium
Color removal
Copper
Decoloring
Dyes
Functional groups
Fungi
Heavy metals
Malachite green
Metal ions
Metals
mixtures
Penicillium simplicissimum
Removal
triphenylmethane dyes
Zinc
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Summary:In the absence of various metal ions, live cells of Penicillium simplicissimum decolorized Crystal Violet (CV), Methyl Violet (MV), Malachite Green (MG) and Cotton Blue (CB) (75.6-90.8%, 0.5-2 h) more efficiently than dead cells (43.9-75.2%, 4 h). Cu(II) enhanced CB removal by live and dead cells (64.1-82.0%) but with Cd(II), Zn(II) and Cr(III), removal of CV, MV and MG were inhibited. Pb(II) inhibited dye removal by live cells (63.1-78.1%), while dead cells remained unaffected (40.6-74.0%). Dye removal was attributed to binding to hydroxyl, carbonyl, amino, phosphoryl and nitro groups based on FTIR analyses. Dye-metal-fungi interactions revealed new binding sites and non-involvement of specific functional groups that previously interacted with single dyes. Hence, this study indicated that isolate 10 (especially live cells) is capable of removing dyes from dye-metal solutions.
ISSN:0149-6395
1520-5754
DOI:10.1080/01496395.2019.1626422