Adsorptive removal of cadmium from aqueous medium-a critical review

Bhattacharyya, Kaustav; Sen, Debrup; Banik, Ajit Kumar; Ganguly, Subhadeep

doi:10.1016/j.pce.2023.103538

Cited by 3 publications

(1 citation statement)

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“…Their biodegradable nature, absence of hazards, and ability to prevent secondary contamination have made them particularly useful in the treatment of wastewater 32 . The effectiveness of various assorbents over conventional physico-chemical methods of remediation methods have been explained in detail as well as the supiroorrity of microbial adosrbents over others have also been focussed 33 .…”

Section: Introductionmentioning

confidence: 99%

Unlocking Cd(II) biosorption potential of Candida tropicalis XTA 1874 for sustainable wastewater treatment

Bhattacharyya,

Bhattacharjee,

Sen

et al. 2024

Sci Rep

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Cd(II) is a potentially toxic heavy metal having carcinogenic activity. It is becoming widespread in the soil and groundwater by various natural and anthropological activities. This is inviting its immediate removal. The present study is aimed at developing a Cd(II) resistant strain isolated from contaminated water body and testing its potency in biological remediation of Cd(II) from aqueous environment. The developed resistant strain was characterized by SEM, FESEM, TEM, EDAX, FT-IR, Raman Spectral, XRD and XPS analysis. The results depict considerable morphological changes had taken place on the cell surface and interaction of Cd(II) with the surface exposed functional groups along with intracellular accumulation. Molecular contribution of critical cell wall component has been evaluated. The developed resistant strain had undergone Cd(II) biosorption study by employing adsorption isotherms and kinetic modeling. Langmuir model best fitted the Cd(II) biosorption data compared to the Freundlich one. Cd(II) biosorption by the strain followed a pseudo second order kinetics. The physical parameters affecting biosorption were also optimized by employing response surface methodology using central composite design. The results depict remarkable removal capacity 75.682 ± 0.002% of Cd(II) by the developed resistant strain from contaminated aqueous medium using 500 ppm of Cd(II). Quantitatively, biosorption for Cd(II) by the newly developed resistant strain has been increased significantly (p < 0.0001) from 4.36 ppm (non-resistant strain) to 378.41 ppm (resistant strain). It has also shown quite effective desorption capacity 87.527 ± 0.023% at the first desorption cycle and can be reused effectively as a successful Cd(II) desorbent up to five cycles. The results suggest that the strain has considerable withstanding capacity of Cd(II) stress and can be employed effectively in the Cd(II) bioremediation from wastewater.

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Section: Introductionmentioning

confidence: 99%