Services on Demand
Journal
Article
Indicators
- Cited by SciELO
Related links
- Similars in SciELO
Share
Revista de la Sociedad Química del Perú
Print version ISSN 1810-634X
Abstract
LAVADO MEZA, Carmencita and ORE JIMENEZ, Franklin. Study of lead divalent biosorption from aqueous solutions using corncob biomass modified (Zea mays). Rev. Soc. Quím. Perú [online]. 2016, vol.82, n.4, pp.403-414. ISSN 1810-634X.
Removing ions Pb (II) was investigated from aqueous solutions using biomass corn cob chemically modified with a 0,2 M NaOH solution, using a batch system, achieving 40% increase in adsorption capacity compared to similar unmodified (ZM). The corncob modified (MZM) was characterized by infrared spectroscopy Fourier transform (FTIR) determining presence of functional groups such as OH and carboxylic groups which would favor biosorption process, the surface area was determined to be the equal to 2,2 m2/g. Likewise, adsorption capacity versus time MZM contact biosorbent dose, pH and initial concentrationof Pb (II) solution were evaluated. The optimal conditions for the removal of Pb (II) were 4g/L MZM, stirring time 60 minutes and pH equal to 5,0. The kinetic data were fitted to the model of Pseudo Second Order, experimental equilibrium data were better adjusted to the Langmuir model, which would indicate a monolayer biosorption. The MZM has a maximum capacity of biosorption of 12,44 mg/g
Keywords : Lead; biosorption; modified corncob; low cost biosorbents.