Data/hora: 06/06/2024 09:38:25

Provedor de dados: | 69
País: | Chile
Título: | Effects of temperature on the sorption of Pb2+ and Cd2+ from aqueous solution by Caladium bicolor (Wild Cocoyam) biomass
Autores: | Horsfall Jnr,Michael; Spiff,Ayebaemi I.
Data: | 2005-08-01
Ano: | 2005
Palavras-chave: | Biosorption; Cocoyam; Heavy metals removal; Temperature; Thermodynamics of sorption; Waste management.
Resumo: | This report is based on the investigation of the effect of temperature on the removal of Pb2+ and Cd2+ in aqueous effluent using C. bicolor biomass in a batch sorption process. The result showed that the most suitable sorption temperature was 40ºC with maximum sorption capacities of 49.02 mg/g and 52.63 mg/g for Pb2+ and Cd2+ respectively. Various thermodynamic parameters, such as &amp;#916;Gº, &amp;#916;Hº, &amp;#916;Sº and Ea have been calculated. The data showed that the sorption process is spontaneous and exothermic in nature and that lower solution temperatures favours metal ion removal by the biomass. The findings of this investigation suggest that physical sorption plays a role in controlling the sorption rate. The sticking probability model was further employed to assess the applicability of the C. bicolor biomass as an alternative adsorbent for metal ion contaminants in aqueous system
Tipo: | Journal article
Idioma: | Inglês
Identificador: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582005000200005
Editor: | Pontificia Universidad Católica de Valparaíso
Formato: | text/html
Fonte: | Electronic Journal of Biotechnology  v.8 n.2 2005