Adsorption Kinetics and Equilibrium Isotherms of Tartrazine and Sunset Yellow dyes from aqueous solution using activated Gbafilo (Chrysobalanus icaco) shell:-Chimeziri, Cynthia C.
ABSTRACT
Application of chrysobalanus
icaco shell for the removal of an anionic dyes, tartrazine and sunset yellow
from aqueous solution by batch adsorption experiment were investigated. The
adsorption capacity of the adsorbent was determined. Effect of pH, adsorbent
dose, temperature, contact time and initial concentration were determined. The
result showed that the optimum adsorption was attained at pH 1 for tartrazine
dye and pH 2 for sunset yellow dye, adsorption equilibrium was attained at
120mins.The adsorption capacity increases with increase in initial
concentration of 30mg/L to 150mg/L of tartrazine from 5.97mg/g to 23.40mg/g and
sunset yellow from 4.05mg/g to 19.65mg/g. The equilibrium adsorption of
tartrazine dye and sunset yellow dye on adsorbent was analyzed by Langmuir (R?)
values: 0.874 and 0.527, Freundlich (R?) values: 0.896 and 0.759, Temkin (R?)
values: 0.747 and 0.901 and Dubinin (R?) values: 0.660 and 0.984. The results
indicate that the Freundlich isotherm (R? = 0.896) provide the best correlation
for tartrazine dye and Dubinin isotherm provide the best correlation for Sunset
Yellow dye (R? = 0.984). The kinetic model of tartrazine dye and sunset yellow
dye on adsorbent was analyzed by Pseudo - first order (R?) values: 0.952 and
0.174, Pseudo-second order (R?) values: 0.997 and 0.955, lntraparticle
diffusion (R?) values: 0.924 and 0.164 and Liquid film diffusion (R?) values:
0.952 and 0.174. The results of the kinetic study showed that the adsorption
process was better described by the Pseudo-second order model with the
coefficient of determination (R?) values of 0.997 and 0.955 indicating
chemisorption mechanism.
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CHIMEZIRI, C (2023). Adsorption Kinetics and Equilibrium Isotherms of Tartrazine and Sunset Yellow dyes from aqueous solution using activated Gbafilo (Chrysobalanus icaco) shell:-Chimeziri, Cynthia C.. Repository.mouau.edu.ng: Retrieved Jul 27, 2024, from https://repository.mouau.edu.ng/work/view/adsorption-kinetics-and-equilibrium-isotherms-of-tartrazine-and-sunset-yellow-dyes-from-aqueous-solution-using-activated-gbafilo-chrysobalanus-icaco-shell-chimeziri-cynthia-c-7-2
CHIMEZIRI, CHIMEZIRI. "Adsorption Kinetics and Equilibrium Isotherms of Tartrazine and Sunset Yellow dyes from aqueous solution using activated Gbafilo (Chrysobalanus icaco) shell:-Chimeziri, Cynthia C." Repository.mouau.edu.ng. Repository.mouau.edu.ng, 09 Nov. 2023, https://repository.mouau.edu.ng/work/view/adsorption-kinetics-and-equilibrium-isotherms-of-tartrazine-and-sunset-yellow-dyes-from-aqueous-solution-using-activated-gbafilo-chrysobalanus-icaco-shell-chimeziri-cynthia-c-7-2. Accessed 27 Jul. 2024.
CHIMEZIRI, CHIMEZIRI. "Adsorption Kinetics and Equilibrium Isotherms of Tartrazine and Sunset Yellow dyes from aqueous solution using activated Gbafilo (Chrysobalanus icaco) shell:-Chimeziri, Cynthia C.". Repository.mouau.edu.ng, Repository.mouau.edu.ng, 09 Nov. 2023. Web. 27 Jul. 2024. < https://repository.mouau.edu.ng/work/view/adsorption-kinetics-and-equilibrium-isotherms-of-tartrazine-and-sunset-yellow-dyes-from-aqueous-solution-using-activated-gbafilo-chrysobalanus-icaco-shell-chimeziri-cynthia-c-7-2 >.
CHIMEZIRI, CHIMEZIRI. "Adsorption Kinetics and Equilibrium Isotherms of Tartrazine and Sunset Yellow dyes from aqueous solution using activated Gbafilo (Chrysobalanus icaco) shell:-Chimeziri, Cynthia C." Repository.mouau.edu.ng (2023). Accessed 27 Jul. 2024. https://repository.mouau.edu.ng/work/view/adsorption-kinetics-and-equilibrium-isotherms-of-tartrazine-and-sunset-yellow-dyes-from-aqueous-solution-using-activated-gbafilo-chrysobalanus-icaco-shell-chimeziri-cynthia-c-7-2