Biosorption of lead (II) in aqueous solution with biomass of prickly pear cladodes (opuntia ficus indica)

Translated title of the contribution: Biosorción de plomo (II) en solución acuosa con biomasa de los cladodios de la tuna (opuntia ficus indica)

Carmencita Lavado-Meza, María R. Sun-Kou, Tracy Kate Castro-Arroyo, Humberto Dax Bonilla-Mancilla

Research output: Contribution to journalOriginal Articlepeer-review

4 Scopus citations

Abstract

The removal of lead from aqueous solutions by the biomass of prickly pear cladodes (BCT), a species found in abundance in the Sierra region in Peru, was investigated. The physical and chemical properties of BCT were determined by FTIR and SEM/EDX techniques. The FTIR analysis confirmed the presence of –OH, C–O–C, C=O and –NH2 groups which would interact with the metal. The SEM micrograph revealed that the surface morphology of the BCT shows adequate porosity for biosorption. In a discontinuous system, the highest biosorption capacity (qe ) was obtained with a BCT mass/volume ratio of 4 g/L, pH 4.5 and 1 h of contact time. Biosorption followed a pseudo-second order kinetic model and the intraparticle diffusion process was the main factor controlling speed. Data at equilibrium were correlated using five models (Langmuir, Freundlich, Temkin, DR, and Redlich-Peterson) and were better fitted to the Langmuir model, which would indicate that the process is carried out in energetically homogeneous active centers, the value of qe maximum was 50.25 mg/g. The results obtained demonstrate that BCT can be used as an efficient biosorbent for the treatment of waters contaminated with Pb (II).

Translated title of the contributionBiosorción de plomo (II) en solución acuosa con biomasa de los cladodios de la tuna (opuntia ficus indica)
Original languageSpanish
Pages (from-to)36-46
Number of pages11
JournalRevista Colombiana de Quimica
Volume49
Issue number3
DOIs
StateIndexed - 2020

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© 2020, Universidad Nacional de Colombia. All rights reserved.

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