SciELO - Scientific Electronic Library Online

 
vol.79 issue3Synthesis of new oxovanadium (IV) complexes of potential insulinmimetic activity with coumarin-3carboxylic acid ligands and substituted derivativesSynthesis and characterization RMN 1D and 2D of the oxigenated derivatives of the 1-phenyl-3methyl-2-pirazoline-5-ona and their ligand potencial capacity author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

  • Have no cited articlesCited by SciELO

Related links

  • Have no similar articlesSimilars in SciELO

Share


Revista de la Sociedad Química del Perú

Print version ISSN 1810-634X

Abstract

GARCIA VILLEGAS, Víctor R. et al. Lead (II) biosorption equilibrium and characterization through FT-IR AND SEM-EDAX crosslinked pectin from orange peels. Rev. Soc. Quím. Perú [online]. 2013, vol.79, n.3, pp.256-264. ISSN 1810-634X.

Pectic material extracted from orange peels was previously cross-linked to diminish hydration and swelling capacity when pectin is found in aqueous solution medium. Degree of metoxilation (DM), galacturonic acid anhydrous (%AGA) and pKa determination allowed characterizing biosorbent. Maximum sorption capacity was obtained at pH between 4.5 and 5.5. For data processing and statistical treatment informatics Orign 6.0 version program was used. Data from biosorption equilibrium had a better fit on Langmuir sorption equation model, obtaining qmax = 186 mg/g as a maximum adsorption capacity. Fourier transform infrared spectroscopy analysis (FT-IR) allowed recognizing characteristic functional groups presents as well as biomass modifications. Biosorbent surface morphologic was studied by scanning electron microscope (SEM) and elemental composition biomass before biosorpton process was obtained through Energy-dispersive X-ray spectroscopy (EDAX).

Keywords : biosorptión; pectin; lead; isotherm; Langmuir.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )