TY - JOUR
T1 - Kinetic, isotherm and equilibrium study of adsorption of hydrogen sulfide from wastewater using modified eggshells
AU - Habeeb, Omar Abed
AU - Kanthasamy, Ramesh
AU - Ali, Gomaa Abdelgawad Mohammed
AU - Yunus, Rosli Bin Mohd
AU - Olalere, Olusegun Abayomi
N1 - The authors would like to thank the Faculty of Chemical and Natural Resources Engineering, University Malaysia Pahang, for the laboratory facilities provided to carry out this research
PY - 2017/5/30
Y1 - 2017/5/30
N2 - The studies of adsorption equilibrium isotherms and the kinetics of hydrogen sulfide-water systems on calcite-based adsorbents prepared from eggshells were undertaken. The effects of operating variables, such as contact time and initial concentration, on the adsorption capacity of hydrogen sulfide are investigated. The modified eggshells are characterized using different analytical approaches such as Scanning Electron Microscopy (SEM) and Fourier Transform Infrared (FTIR). The batch mode adsorption process is performed at optimum removal conditions: dosage of 1 g/L, pH level of pH 6, agitation speed of 150 rpm, and contact time of 14 h for adsorbing hydrogen sulfide with an initial concentration of 100-500 mg/L. In the current study, the Langmuir, Freundlich, Temkin, and Dubinin models are used to predict the adsorption isotherms. Our equilibrium data for hydrogen sulfide adsorption agrees well with those of the Langmuir equation. The maximum monolayer adsorption capacity is 150.07 mg/g. Moreover, the kinetics of H2S adsorption using the modified calcite of eggshells follows a pseudo-second-order model. From the current work, it has been found that the calcite eggshells are a suitable adsorbent for H2S containing wastewater. Most importantly, chicken eggshells are waste products that are vastly available; hence, they could serve as a practical means for H2S adsorption.
AB - The studies of adsorption equilibrium isotherms and the kinetics of hydrogen sulfide-water systems on calcite-based adsorbents prepared from eggshells were undertaken. The effects of operating variables, such as contact time and initial concentration, on the adsorption capacity of hydrogen sulfide are investigated. The modified eggshells are characterized using different analytical approaches such as Scanning Electron Microscopy (SEM) and Fourier Transform Infrared (FTIR). The batch mode adsorption process is performed at optimum removal conditions: dosage of 1 g/L, pH level of pH 6, agitation speed of 150 rpm, and contact time of 14 h for adsorbing hydrogen sulfide with an initial concentration of 100-500 mg/L. In the current study, the Langmuir, Freundlich, Temkin, and Dubinin models are used to predict the adsorption isotherms. Our equilibrium data for hydrogen sulfide adsorption agrees well with those of the Langmuir equation. The maximum monolayer adsorption capacity is 150.07 mg/g. Moreover, the kinetics of H2S adsorption using the modified calcite of eggshells follows a pseudo-second-order model. From the current work, it has been found that the calcite eggshells are a suitable adsorbent for H2S containing wastewater. Most importantly, chicken eggshells are waste products that are vastly available; hence, they could serve as a practical means for H2S adsorption.
KW - Adsorbents
KW - Chicken eggshells
KW - Hydrogen sulfide
KW - Isotherm
KW - Kinetic
UR - http://www.scopus.com/inward/record.url?scp=85027688622&partnerID=8YFLogxK
U2 - 10.31436/iiumej.v18i1.689
DO - 10.31436/iiumej.v18i1.689
M3 - Article
AN - SCOPUS:85027688622
VL - 18
SP - 13
EP - 25
JO - IIUM Engineering Journal
JF - IIUM Engineering Journal
SN - 1511-788X
IS - 1
ER -