Adsorption of Inorganic Salt by Granular Activated Carbon and Related Prediction Models
In recent years, the underground water sources in
southern Taiwan have become salinized because of saltwater
intrusions. This study explores the adsorption characteristics of
activated carbon on salinizing inorganic salts using isothermal
adsorption experiments and provides a model analysis. The
temperature range for the isothermal adsorption experiments ranged
between 5 to 45 ℃, and the amount adsorbed varied between 28.21 to
33.87 mg/g. All experimental data of adsorption can be fitted to both
the Langmuir and the Freundlich models. The thermodynamic
parameters for per chlorate onto granular activated carbon were
calculated as -0.99 to -1.11 kcal/mol for DG°, -0.6 kcal/mol for DH°,
and 1.21 to 1.84 kcal/mol for DS°. This shows that the adsorption
process of granular activated carbon is spontaneously exothermic. The
observation of adsorption behaviors under low ionic strength, low pH
values, and low temperatures is beneficial to the adsorption removal of
perchlorate with granular activated carbon.
[1] Hu, Z. and Srinivasan, M. P., "Mesoporous high-surface-area activated
carbon", Microprous and Microprous, vol. 43, pp. 267-275, 2001.
[2] Yoshizawa, N.; Maruyama, K.; Yamada, Y.; ZielinsKa-Blajet M., "XRD
evaluation of CO2 activation process of coal and coconut shell-based
carbons", Fuel, vol. 79, 1461-1466, 2000.
[3] Karge, H.G.Weitkamp, J., "Adsorption and Diffusion", 7, 2008.
[4] Urbansky, et al., "San Diego State University", San Diego, California,
2000.
[5] Tillotson, S. L., et al., "Relation between Biochemical Severity and
Intelligence in Early Treated Congenital Hypothyroidism: a Threshold
Effect", BMJ, vol. 309, pp. 440-445, 1994.
[6] Freundlich, H., "├£ber die adsorption in lösungen", Zeitschrift f├╝r
Physikalische Chemie, vol. 57, pp. 385-470, 1906.
[7] Nandi, B.K., Goswami, A.Purkait, M.K., "Adsorption characteristics of
brilliant green dye on kaolin", Journal of Hazardous Materials, vol. 161,
pp. 387-395, 2009.
[8] Langmuir, I., "The constitution and fundamental properties of solids and
liquids, Part I Solids", Journal of the American Chemical Society, vol. 38,
pp. 2221-2295, 1916.
[9] Weng, C.H., Sharma, Y.C.Chu, S.H., "Adsorption of Cr (VI) from
aqueous solutions by spent activated clay", Journal of Hazardous
Materials, vol. 155, pp. 65-75, 2008.
[10] Jaycok, M.J., Parfitt, G.D., "In Chemistry of interfaces", Ellis Horwood
Limited, N.Y., 1981.
[1] Hu, Z. and Srinivasan, M. P., "Mesoporous high-surface-area activated
carbon", Microprous and Microprous, vol. 43, pp. 267-275, 2001.
[2] Yoshizawa, N.; Maruyama, K.; Yamada, Y.; ZielinsKa-Blajet M., "XRD
evaluation of CO2 activation process of coal and coconut shell-based
carbons", Fuel, vol. 79, 1461-1466, 2000.
[3] Karge, H.G.Weitkamp, J., "Adsorption and Diffusion", 7, 2008.
[4] Urbansky, et al., "San Diego State University", San Diego, California,
2000.
[5] Tillotson, S. L., et al., "Relation between Biochemical Severity and
Intelligence in Early Treated Congenital Hypothyroidism: a Threshold
Effect", BMJ, vol. 309, pp. 440-445, 1994.
[6] Freundlich, H., "├£ber die adsorption in lösungen", Zeitschrift f├╝r
Physikalische Chemie, vol. 57, pp. 385-470, 1906.
[7] Nandi, B.K., Goswami, A.Purkait, M.K., "Adsorption characteristics of
brilliant green dye on kaolin", Journal of Hazardous Materials, vol. 161,
pp. 387-395, 2009.
[8] Langmuir, I., "The constitution and fundamental properties of solids and
liquids, Part I Solids", Journal of the American Chemical Society, vol. 38,
pp. 2221-2295, 1916.
[9] Weng, C.H., Sharma, Y.C.Chu, S.H., "Adsorption of Cr (VI) from
aqueous solutions by spent activated clay", Journal of Hazardous
Materials, vol. 155, pp. 65-75, 2008.
[10] Jaycok, M.J., Parfitt, G.D., "In Chemistry of interfaces", Ellis Horwood
Limited, N.Y., 1981.
@article{"International Journal of Earth, Energy and Environmental Sciences:50326", author = "Kai-Lin Hsu and Jie-Chung Lou and Jia-Yun Han", title = "Adsorption of Inorganic Salt by Granular Activated Carbon and Related Prediction Models", abstract = "In recent years, the underground water sources in
southern Taiwan have become salinized because of saltwater
intrusions. This study explores the adsorption characteristics of
activated carbon on salinizing inorganic salts using isothermal
adsorption experiments and provides a model analysis. The
temperature range for the isothermal adsorption experiments ranged
between 5 to 45 ℃, and the amount adsorbed varied between 28.21 to
33.87 mg/g. All experimental data of adsorption can be fitted to both
the Langmuir and the Freundlich models. The thermodynamic
parameters for per chlorate onto granular activated carbon were
calculated as -0.99 to -1.11 kcal/mol for DG°, -0.6 kcal/mol for DH°,
and 1.21 to 1.84 kcal/mol for DS°. This shows that the adsorption
process of granular activated carbon is spontaneously exothermic. The
observation of adsorption behaviors under low ionic strength, low pH
values, and low temperatures is beneficial to the adsorption removal of
perchlorate with granular activated carbon.", keywords = "Water Treatment, Per Chlorate, Adsorption, Granular
Activated Carbon", volume = "6", number = "5", pages = "236-4", }