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Efficient removal of total arsenic (As3+/5+) from contaminated water by novel strategies mediated iron and plant extract activated waste flowers of marigold

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dc.contributor.authorUpadhyay, Sudhir K.
dc.contributor.authorDevi, Priyanka
dc.contributor.authorKumar, Vinay
dc.contributor.authorPathak, Himanshu K.
dc.contributor.authorKumar, Prasann
dc.contributor.authorRajput, Vishnu D.
dc.contributor.authorDwivedi, Padmanabh
dc.date.accessioned2025-01-28T09:55:00Z
dc.date.available2025-01-28T09:55:00Z
dc.date.issued2023
dc.description.abstractIn this investigation, marigold flower-waste was activated with iron salts (MG-Fe), subsequently marigold plant extract (MG-Fe-Ex) for the adsorptive elimination of As3+ and As5+ from contaminated water. The governing factor such as medium pH, temperature, pollutant concentration, reaction time, adsorbent dose were considered for the study. The complete elimination of As3+/5+ was recorded with MG-Fe-Ex at pH 8.0, 90 min, 30 �C, dose 4 g/L, 20 mg/L of As3+/5+ and shaking rate 120 rpm, while under the identical experimental condition, MG-Fe exhibited 98.4% and 73.3% removal for As5+ and As3+, respectively. The MG-Fe-Ex contains iron oxides (Fe2O3 and Fe3O4) as a result of iron ions reaction with plant bioactive molecules as evident from x-ray diffraction analysis (XRD), energy dispersive x-ray spectroscopic (EDS) and Fourier transform infrared (FTIR) spectroscopic study. The adsorption data of As3+/5+ on MG-Fe and MG-Fe-Ex was best fitted by pseudo-first order kinetic and freundlich isotherm except As5+ adsorption on MG-Fe-Ex that can be described by langmuir isotherm model. The prevailing mechanism in adsorption of As3+/5+ on both adsorbent might be hydrogen bonding, electrostatic attraction and complexation. From the above, it is confirmed that MG-Fe-Ex adsorbent has high potential and can be used for the adsorptive elimination of As3+/5+ from contaminated water in sustainable and environmentally friendly way. � 2022
dc.identifier.doihttps://doi.org/10.1016/j.chemosphere.2022.137551
dc.identifier.issn456535
dc.identifier.urihttps://dl.bhu.ac.in/ir/handle/123456789/22825
dc.language.isoen
dc.publisherElsevier Ltd
dc.subjectArsenic contaminant
dc.subjectExtract activated biomass
dc.subjectIsotherm
dc.subjectKinetic
dc.subjectMarigold flower waste
dc.subjectRemoval
dc.titleEfficient removal of total arsenic (As3+/5+) from contaminated water by novel strategies mediated iron and plant extract activated waste flowers of marigold
dc.typeArticle
dspace.entity.typePublication
journal.titleChemosphere
journalvolume.identifier.volume313

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2023