Eggshell and coral wastes as low cost sorbents for the removal of pb 2+, cd 2+ and cu 2+ from aqueous solutions
Mahtab Ahmad, Adel R.A. Usman, Sang Soo Lee, Sung Chul Kim, Jin Ho Joo, Jae E. Yang, Yong Sik Ok
Rapid industrialization in Korea has led to the discharge of heavy metals to water, posing a threat to the environment. The use of natural materials as low cost sorbents for the removal of heavy metals from aqueous solutions has recently received increasing attention. The present study was conducted to evaluate the effectiveness of eggshell and coral wastes for the removal of Pb 2+, Cd 2+ and Cu 2+ from aqueous solutions. Batch equilibrium experiments were conducted using heavy metal solutions with waste eggshell and coral powders. Langmuir and Freundlich adsorption models were used for the mathematical description of sorption equilibrium. The maximum amounts of metals (Cu 2+, Pb 2+ and Cd 2+) adsorbed were found to be 32.3, 22.9 and 4.47mmolkg -1 for eggshell and 6.77, 5.52 and 1.03mmolkg -1 for coral wastes, respectively. At low initial concentrations the adsorption of heavy metals onto both sorbents can be described as H-type (except for the Cd adsorption onto coral), indicating high-affinity isotherms and strong adsorbate-adsorptive interactions such as inner sphere complexes. However, the metal adsorption was described by L-type isotherm at high initial concentrations. Based on the distribution coefficient (K d) values and the percentage of metal removed, the selectivity sequence in eggshells and coral wastes was found to be Pb 2+>Cu 2+>Cd 2+. The K d values and the percentage of metals removed were higher in eggshells than coral with its higher capacity to adsorb heavy metals. Based on the results of the present study, eggshell and coral wastes can be used for the removal of heavy metals from aqueous solutions.
Journal of Industrial and Engineering Chemistry
https://doi.org/10.1016/j.jiec.2011.11.013
Adsorbates
Biosorption
Distribution coefficient
Langmuir isotherm
Chemical Engineering(all)
Ahmad, M., Usman, A. R. A., Lee, S. S., Kim, S. C., Joo, J. H., Yang, J. E., & Ok, Y. S. (2012). Eggshell and coral wastes as low cost sorbents for the removal of pb 2+, cd 2+ and cu 2+ from aqueous solutions. Journal of Industrial and Engineering Chemistry, 18(1), 198-204. https://doi.org/10.1016/j.jiec.2011.11.013
Eggshell and coral wastes as low cost sorbents for the removal of pb 2+, cd 2+ and cu 2+ from aqueous solutions. / Ahmad, Mahtab; Usman, Adel R.A.; Lee, Sang Soo; Kim, Sung Chul; Joo, Jin Ho; Yang, Jae E.; Ok, Yong Sik.
In: Journal of Industrial and Engineering Chemistry, Vol. 18, No. 1, 25.01.2012, p. 198-204.
Ahmad, M, Usman, ARA, Lee, SS, Kim, SC, Joo, JH, Yang, JE & Ok, YS 2012, 'Eggshell and coral wastes as low cost sorbents for the removal of pb 2+, cd 2+ and cu 2+ from aqueous solutions', Journal of Industrial and Engineering Chemistry, vol. 18, no. 1, pp. 198-204. https://doi.org/10.1016/j.jiec.2011.11.013
Ahmad M, Usman ARA, Lee SS, Kim SC, Joo JH, Yang JE et al. Eggshell and coral wastes as low cost sorbents for the removal of pb 2+, cd 2+ and cu 2+ from aqueous solutions. Journal of Industrial and Engineering Chemistry. 2012 Jan 25;18(1):198-204. https://doi.org/10.1016/j.jiec.2011.11.013
Ahmad, Mahtab ; Usman, Adel R.A. ; Lee, Sang Soo ; Kim, Sung Chul ; Joo, Jin Ho ; Yang, Jae E. ; Ok, Yong Sik. / Eggshell and coral wastes as low cost sorbents for the removal of pb 2+, cd 2+ and cu 2+ from aqueous solutions. In: Journal of Industrial and Engineering Chemistry. 2012 ; Vol. 18, No. 1. pp. 198-204.
@article{1bfd8c2d1aaa4109826cf3430452f51d,
title = "Eggshell and coral wastes as low cost sorbents for the removal of pb 2+, cd 2+ and cu 2+ from aqueous solutions",
abstract = "Rapid industrialization in Korea has led to the discharge of heavy metals to water, posing a threat to the environment. The use of natural materials as low cost sorbents for the removal of heavy metals from aqueous solutions has recently received increasing attention. The present study was conducted to evaluate the effectiveness of eggshell and coral wastes for the removal of Pb 2+, Cd 2+ and Cu 2+ from aqueous solutions. Batch equilibrium experiments were conducted using heavy metal solutions with waste eggshell and coral powders. Langmuir and Freundlich adsorption models were used for the mathematical description of sorption equilibrium. The maximum amounts of metals (Cu 2+, Pb 2+ and Cd 2+) adsorbed were found to be 32.3, 22.9 and 4.47mmolkg -1 for eggshell and 6.77, 5.52 and 1.03mmolkg -1 for coral wastes, respectively. At low initial concentrations the adsorption of heavy metals onto both sorbents can be described as H-type (except for the Cd adsorption onto coral), indicating high-affinity isotherms and strong adsorbate-adsorptive interactions such as inner sphere complexes. However, the metal adsorption was described by L-type isotherm at high initial concentrations. Based on the distribution coefficient (K d) values and the percentage of metal removed, the selectivity sequence in eggshells and coral wastes was found to be Pb 2+>Cu 2+>Cd 2+. The K d values and the percentage of metals removed were higher in eggshells than coral with its higher capacity to adsorb heavy metals. Based on the results of the present study, eggshell and coral wastes can be used for the removal of heavy metals from aqueous solutions.",
keywords = "Biosorption, Coral, Distribution coefficient, Eggshell, Heavy metal removal, Langmuir isotherm",
author = "Mahtab Ahmad and Usman, {Adel R.A.} and Lee, {Sang Soo} and Kim, {Sung Chul} and Joo, {Jin Ho} and Yang, {Jae E.} and Ok, {Yong Sik}",
doi = "10.1016/j.jiec.2011.11.013",
journal = "Journal of Industrial and Engineering Chemistry",
publisher = "Korean Society of Industrial Engineering Chemistry",
T1 - Eggshell and coral wastes as low cost sorbents for the removal of pb 2+, cd 2+ and cu 2+ from aqueous solutions
AU - Ahmad, Mahtab
AU - Usman, Adel R.A.
AU - Lee, Sang Soo
AU - Kim, Sung Chul
AU - Joo, Jin Ho
AU - Yang, Jae E.
AU - Ok, Yong Sik
N2 - Rapid industrialization in Korea has led to the discharge of heavy metals to water, posing a threat to the environment. The use of natural materials as low cost sorbents for the removal of heavy metals from aqueous solutions has recently received increasing attention. The present study was conducted to evaluate the effectiveness of eggshell and coral wastes for the removal of Pb 2+, Cd 2+ and Cu 2+ from aqueous solutions. Batch equilibrium experiments were conducted using heavy metal solutions with waste eggshell and coral powders. Langmuir and Freundlich adsorption models were used for the mathematical description of sorption equilibrium. The maximum amounts of metals (Cu 2+, Pb 2+ and Cd 2+) adsorbed were found to be 32.3, 22.9 and 4.47mmolkg -1 for eggshell and 6.77, 5.52 and 1.03mmolkg -1 for coral wastes, respectively. At low initial concentrations the adsorption of heavy metals onto both sorbents can be described as H-type (except for the Cd adsorption onto coral), indicating high-affinity isotherms and strong adsorbate-adsorptive interactions such as inner sphere complexes. However, the metal adsorption was described by L-type isotherm at high initial concentrations. Based on the distribution coefficient (K d) values and the percentage of metal removed, the selectivity sequence in eggshells and coral wastes was found to be Pb 2+>Cu 2+>Cd 2+. The K d values and the percentage of metals removed were higher in eggshells than coral with its higher capacity to adsorb heavy metals. Based on the results of the present study, eggshell and coral wastes can be used for the removal of heavy metals from aqueous solutions.
AB - Rapid industrialization in Korea has led to the discharge of heavy metals to water, posing a threat to the environment. The use of natural materials as low cost sorbents for the removal of heavy metals from aqueous solutions has recently received increasing attention. The present study was conducted to evaluate the effectiveness of eggshell and coral wastes for the removal of Pb 2+, Cd 2+ and Cu 2+ from aqueous solutions. Batch equilibrium experiments were conducted using heavy metal solutions with waste eggshell and coral powders. Langmuir and Freundlich adsorption models were used for the mathematical description of sorption equilibrium. The maximum amounts of metals (Cu 2+, Pb 2+ and Cd 2+) adsorbed were found to be 32.3, 22.9 and 4.47mmolkg -1 for eggshell and 6.77, 5.52 and 1.03mmolkg -1 for coral wastes, respectively. At low initial concentrations the adsorption of heavy metals onto both sorbents can be described as H-type (except for the Cd adsorption onto coral), indicating high-affinity isotherms and strong adsorbate-adsorptive interactions such as inner sphere complexes. However, the metal adsorption was described by L-type isotherm at high initial concentrations. Based on the distribution coefficient (K d) values and the percentage of metal removed, the selectivity sequence in eggshells and coral wastes was found to be Pb 2+>Cu 2+>Cd 2+. The K d values and the percentage of metals removed were higher in eggshells than coral with its higher capacity to adsorb heavy metals. Based on the results of the present study, eggshell and coral wastes can be used for the removal of heavy metals from aqueous solutions.
KW - Biosorption
KW - Coral
KW - Distribution coefficient
KW - Eggshell
KW - Heavy metal removal
KW - Langmuir isotherm
U2 - 10.1016/j.jiec.2011.11.013
DO - 10.1016/j.jiec.2011.11.013
JO - Journal of Industrial and Engineering Chemistry
JF - Journal of Industrial and Engineering Chemistry
10.1016/j.jiec.2011.11.013