Removal of hazardous aniline blue dye using a potential biosorbent – hen feather

Bharti Gaur, Jyoti Mittal, Hadi Hassan, Alok Mittal, Richard T. Baker*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

In this research we have successfully removed a highly toxic dye, “Aniline Blue”, from its aqueous solution employing an adsorbent, Hen Feathers. The dye adsorption over Hen Feather was comprehensively studied over ranges of contact time, pH, concentration, and adsorbent dosage, and the optimum values were evaluated. In order to understand the behaviour of the adsorption system, various isotherm models were evaluated at temperatures of 30, 40 and 50 °C. The data obtained from contact time studies were used to test pseudo-first and pseudo-second order kinetic models and it was found that the adsorption follows pseudo-second-order kinetics. Using the Langmuir constant, b, thermodynamic parameters including ΔG°, ΔH° and ΔS° were calculated and it was ascertained that the process is endothermic (positive ΔH°), involves an increase in disorder (positive ΔS°) and is spontaneous (negative ΔG°). The values of the separation factor (r) also confirmed a favourable adsorption process at all three temperatures studied. Overall, it is affirmed that the adsorbent, Hen Feather, acts as highly potent scavenger to remove the dye Aniline Blue from its aqueous solutions.
Original languageEnglish
Article number101322
Number of pages9
JournalJournal of the Indian Chemical Society
Volume101
Issue number10
Early online date22 Aug 2024
DOIs
Publication statusPublished - 1 Oct 2024

Keywords

  • Adsorption
  • Aniline blue
  • Dye
  • Hen feathers
  • Isotherms
  • Kinetics

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