Issue 69, 2014

Green remediation of textile dyes containing wastewater by Ipomoea hederifolia L.

Abstract

Wild plant and tissue cultures of Ipomoea hederifolia decolorize Scarlet RR (SRR) dye at a concentration of 50 mg Lāˆ’1 up to 96% and 90% within 60 and 96 h, respectively. Significant induction in the enzyme activities of Lignin peroxidase, laccase, 2,6-dichlorophenol indophenol reductase, superoxide dismutase, catalase and tyrosinase was found in the plant roots and shoots during decolorization. I. hederifolia was also able to treat a dye mixture and a real textile effluent efficiently with a reduction in the American Dye Manufacturers Institute (ADMI) value (color removal) up to 85% and 88%, BOD up to 65% and 63% and COD up to 62% and 68%, respectively. Detailed anatomical studies of the stem and root cells of I. hederifolia during uptake and degradation were carried out, showing a stepwise and mechanistic degradation of the model dye SRR. Products formed after dye degradation were analyzed by UV-Vis spectroscopy, FTIR, HPLC and HPTLC, which confirmed the phytotransformation of SRR, dye mixture and textile effluent. A possible pathway for the phytotransformation of SRR was proposed based on GC-MS analysis, which confirmed the formation of different metabolites with lower molecular weights. The phytotoxicity study revealed the non-toxic nature of the formed products.

Graphical abstract: Green remediation of textile dyes containing wastewater by Ipomoea hederifolia L.

Supplementary files

Article information

Article type
Paper
Submitted
09 Jul 2014
Accepted
15 Jul 2014
First published
24 Jul 2014

RSC Adv., 2014,4, 36623-36632

Author version available

Green remediation of textile dyes containing wastewater by Ipomoea hederifolia L.

N. R. Rane, V. V. Chandanshive, R. V. Khandare, A. R. Gholave, S. R. Yadav and S. P. Govindwar, RSC Adv., 2014, 4, 36623 DOI: 10.1039/C4RA06840H

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