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Adsorption of lead(II) ion from aqueous solution using rice hull ash / Li-Hua Wang in Industrial & engineering chemistry research, Vol. 47 n°14 (Juillet 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 n°14 (Juillet 2008) . - p. 4891–4897 Titre : Adsorption of lead(II) ion from aqueous solution using rice hull ash Type de document : texte imprimé Auteurs : Li-Hua Wang, Auteur ; Chun-I Lin, Auteur Année de publication : 2008 Article en page(s) : p. 4891–4897 Langues : Anglais (eng) Mots-clés : Lead(II)  ion  --  adsorption;  Rice  hull  ash;  Aqueous  solution Résumé : Adsorption of lead(II) ion from aqueous solution using rice hull ash (RHA) was explored in this work. The RHA prepared was found to be an efficient adsorbent. Experimental results indicated the rate of removal and the removal at equilibrium could be increased by increasing the initial lead concentration, pH, stroke speed, or adsorption temperature. They were also found to be increased by decreasing RHA dosage. The effects of RHA dosage and initial lead concentration were found to be pronounced, while those of pH, stroke speed, and adsorption temperature were less significant. The data of adsorption kinetics indicated the process was physisorption controlled and the pseudo-second-order rate equation suitably interpreted the overall process. An empirical relationship between lead adsorption and time was also determined. En ligne : pubs.acs.org/doi/abs/10.1021/ie071521z [article] Adsorption of lead(II) ion from aqueous solution using rice hull ash [texte imprimé] / Li-Hua Wang, Auteur ; Chun-I Lin, Auteur . - 2008 . - p. 4891–4897. Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 n°14 (Juillet 2008) . - p. 4891–4897 Mots-clés : Lead(II)  ion  --  adsorption;  Rice  hull  ash;  Aqueous  solution Résumé : Adsorption of lead(II) ion from aqueous solution using rice hull ash (RHA) was explored in this work. The RHA prepared was found to be an efficient adsorbent. Experimental results indicated the rate of removal and the removal at equilibrium could be increased by increasing the initial lead concentration, pH, stroke speed, or adsorption temperature. They were also found to be increased by decreasing RHA dosage. The effects of RHA dosage and initial lead concentration were found to be pronounced, while those of pH, stroke speed, and adsorption temperature were less significant. The data of adsorption kinetics indicated the process was physisorption controlled and the pseudo-second-order rate equation suitably interpreted the overall process. An empirical relationship between lead adsorption and time was also determined. En ligne : pubs.acs.org/doi/abs/10.1021/ie071521z