2024/08/20 by Bharti Gaur, Jyoti Mittal, Hadi Hassan +3
Chemistry · Environmental Science · #Adsorption and biosorption for pollutant removal #Aniline #Chemistry #Dye analysis and toxicity #Feather #Hazardous waste #Nanomaterials for catalytic reactions #Nuclear chemistry #Organic chemistry #Pulp and paper industry #Waste management
paper · pdf · doi:10.1016/j.jics.2024.101322
openalex publication_date 2024/08/20 · crossref created 2024/08/20 · crossref issued 2024/10/01 · crossref published 2024/10/01 · crossref published-print 2024/10/01 · openalex created_date 2025/10/10 · crossref deposited 2026/04/28 · crossref indexed 2026/08/01 · openalex updated_date 2026/08/01
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. • A rare, systematic study of the removal of highly toxic Aniline Blue from water. • Hen Feather, a ubiquitous waste material available in huge quantities, is evaluated. • Detailed characterization of Hen Feather was made by SEM, XRD, XPS. • Effective removal of Aniline Blue by Hen Feathers via chemisorption demonstrated. • Application of isotherm models provides key thermodynamic and kinetic parameters.
