| dc.creator | Wankasi,Donbebe | |
| dc.creator | Horsfall Jnr,Michael | |
| dc.creator | Ibuteme Spiff,Ayabaemi | |
| dc.date | 2006-10-01 | |
| dc.date.accessioned | 2019-05-03T12:44:22Z | |
| dc.date.available | 2019-05-03T12:44:22Z | |
| dc.identifier | https://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000500015 | |
| dc.identifier.uri | http://revistaschilenas.uchile.cl/handle/2250/84920 | |
| dc.description | The sorption kinetics of Pb2+ and Cu2+ ions in aqueous solution by unmodified and mercaptoacetic acid modified biomass of Nypa fruticans shoot has been investigated. The equilibrium sorption capacity of Pb2+ and Cu2+ was determined from the Langmuir equation and found to be 15.59 mg/g and 21.85 mg/g for unmodified biomass and 52.86 mg/g and 66.71 mg/g for modified biomass at 30ºC. The time dependent studies showed relatively rapid sorption of 5 - 10 min to reach equilibrium for both metal ions. A batch sorption model, based on the assumption of the pseudo-second-order mechanism, was applied to predict the rate constants (g mg-1 min-1), which were found to be 3.59 x 10-4 (Pb2+) and 1.85 x 10-4 (Cu2+) and 2.82 x 10-2 (Pb2+) and 3.67 x 10-2 (Cu2+) on unmodified and mercaptoacetic acid modified biomass respectively. The activation energy of the sorption of Pb2+ and Cu2+ on Nypah palm reveals an endothermic process. | |
| dc.format | text/html | |
| dc.language | en | |
| dc.publisher | Pontificia Universidad Católica de Valparaíso | |
| dc.relation | 10.4067/S0717-34582006000500015 | |
| dc.rights | info:eu-repo/semantics/openAccess | |
| dc.source | Electronic Journal of Biotechnology v.9 n.5 2006 | |
| dc.subject | adsorption | |
| dc.subject | heavy metal binding | |
| dc.subject | Nipah palm | |
| dc.title | Sorption kinetics of Pb2+ and Cu2+ ions from aqueous solution by Nipah palm (Nypa fruticans Wurmb) shoot biomass | |
