Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Sorptive Potential of Beach Sand to Remove Ni(II) Ions: An Equilibrium Isotherm Study
10.1002/clen.200700051.abs
The potential to remove Ni(II) ions from aqueous solutions using sea beach sand, a carbonate‐quartz mineral, was thoroughly investigated. The effects of relevant parameters such as solution pH, adsorbent dose, metal ions concentration, and temperature on Ni(II) sorption onto beach sand were examined. The sorption data followed the Langmuir, Freundlich and Dubinin‐Radushkevich (D‐R) isotherms. The adsorption was endothermic in nature at ambient temperature and the computation of the parameters, ΔH, ΔS and ΔGindicated the interactions between sorbate and sorbent to be thermodynamically favorable. Equilibrium was achieved very quickly within 30 min of shaking. A pseudo‐first order Lagergren equation was used to test the adsorption kinetics. Other kinetic models, e. g., the Morris‐Weber and Reichenberg equations, were used to calculate the rate constant of intraparticle diffusion and the fate of the diffusion process, respectively. The influence of some of the common cations and anions were also a subject of this study.
Sorptive Potential of Beach Sand to Remove Ni(II) Ions: An Equilibrium Isotherm Study
10.1002/clen.200700051.abs
The potential to remove Ni(II) ions from aqueous solutions using sea beach sand, a carbonate‐quartz mineral, was thoroughly investigated. The effects of relevant parameters such as solution pH, adsorbent dose, metal ions concentration, and temperature on Ni(II) sorption onto beach sand were examined. The sorption data followed the Langmuir, Freundlich and Dubinin‐Radushkevich (D‐R) isotherms. The adsorption was endothermic in nature at ambient temperature and the computation of the parameters, ΔH, ΔS and ΔGindicated the interactions between sorbate and sorbent to be thermodynamically favorable. Equilibrium was achieved very quickly within 30 min of shaking. A pseudo‐first order Lagergren equation was used to test the adsorption kinetics. Other kinetic models, e. g., the Morris‐Weber and Reichenberg equations, were used to calculate the rate constant of intraparticle diffusion and the fate of the diffusion process, respectively. The influence of some of the common cations and anions were also a subject of this study.
Sorptive Potential of Beach Sand to Remove Ni(II) Ions: An Equilibrium Isotherm Study
Haider Taqvi, Syed Igleem (Autor:in) / Hasany, Syed Moosa (Autor:in) / Bhanger, Mohammad Igbal (Autor:in)
CLEAN – Soil, Air, Water ; 36 ; 366-372
01.04.2008
7 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Sorptive Potential of Beach Sand to Remove Ni(II) Ions: An Equilibrium Isotherm Study
| Online Contents | 2008
Sand Suspension and Transport on Equilibrium Beach
| Online Contents | 2002
Sand Suspension and Transport on Equilibrium Beach
| British Library Online Contents | 2002