Sorption Studies On The Removal Of Industrial Dye Aniline Yellow From Aqueous Solution Using Surfactant Modified Nano Zero Valent Iron:-Ebelechi, Lucy C.
ABSTRACT
In this research, the potential
ofNZVI for efficient removal of aniline yellow as a cationic dye from aqueous
solutions was investigated. The NZVI were characterized by XRD, SEM and FTIR
techniques. To remove aniline yellow, the surface of the NZVI was modified with
sodium dodecyl sulfate (SDS) as an anionic surfactant. Also, the various
parameters affecting dye removal were investigated and optimized. Dye
adsorption equilibrium data were fitted well to the modified Freundlich isotherm
and Dubinin-Radushkevich Isotherm. The adsorption process was highly
pH-dependent and the results indicate that the optimum pH for adsorption of and
maximum adsorption occurred at pH 8.0 for the modified and pH 6.0 for the
unmodified. Fig.4.3-4.4 having maximum removal efficiencies of 95.5 and 82%.
The kinetic studies for aniline yellow adsorption showed rapid sorption
dynamics by a secondorder kinetic model, suggesting Studies on the effect
oftemperature showed that the optimum temperature for adsorption of is 80°C for
modified and unmodified. Pseudo first-order, second-order and intra-particle
diffusivity kinetic models were applied to the experimental data and results
showed that the pseudo second-order provided best fit comparing the correlation
coefficient R2 of the pseudo first for the modified 0.4669 and 0.7978 for the
unmodified, while for the pseudo second order, the R2 values are 0.998 for the
modified and 0.9532 for the unmodified respectively. Kinetic studies also
showed that the adsorption transport mechanism was particle-diffusion
controlled in which weber and morris gave the best fit. The results show that,
SDS-coated NZVI, can be used as a cheap and efficient adsorbent for removal of
cationic dyes from aqueous solutions.
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EBELECHI, C (2023). Sorption Studies On The Removal Of Industrial Dye Aniline Yellow From Aqueous Solution Using Surfactant Modified Nano Zero Valent Iron:-Ebelechi, Lucy C. . Repository.mouau.edu.ng: Retrieved May 03, 2024, from https://repository.mouau.edu.ng/work/view/sorption-studies-on-the-removal-of-industrial-dye-aniline-yellow-from-aqueous-solution-using-surfactant-modified-nano-zero-valent-iron-ebelechi-lucy-c-7-2
CHINYERE, EBELECHI. "Sorption Studies On The Removal Of Industrial Dye Aniline Yellow From Aqueous Solution Using Surfactant Modified Nano Zero Valent Iron:-Ebelechi, Lucy C. " Repository.mouau.edu.ng. Repository.mouau.edu.ng, 12 Dec. 2023, https://repository.mouau.edu.ng/work/view/sorption-studies-on-the-removal-of-industrial-dye-aniline-yellow-from-aqueous-solution-using-surfactant-modified-nano-zero-valent-iron-ebelechi-lucy-c-7-2. Accessed 03 May. 2024.
CHINYERE, EBELECHI. "Sorption Studies On The Removal Of Industrial Dye Aniline Yellow From Aqueous Solution Using Surfactant Modified Nano Zero Valent Iron:-Ebelechi, Lucy C. ". Repository.mouau.edu.ng, Repository.mouau.edu.ng, 12 Dec. 2023. Web. 03 May. 2024. < https://repository.mouau.edu.ng/work/view/sorption-studies-on-the-removal-of-industrial-dye-aniline-yellow-from-aqueous-solution-using-surfactant-modified-nano-zero-valent-iron-ebelechi-lucy-c-7-2 >.
CHINYERE, EBELECHI. "Sorption Studies On The Removal Of Industrial Dye Aniline Yellow From Aqueous Solution Using Surfactant Modified Nano Zero Valent Iron:-Ebelechi, Lucy C. " Repository.mouau.edu.ng (2023). Accessed 03 May. 2024. https://repository.mouau.edu.ng/work/view/sorption-studies-on-the-removal-of-industrial-dye-aniline-yellow-from-aqueous-solution-using-surfactant-modified-nano-zero-valent-iron-ebelechi-lucy-c-7-2