Production and detailed characterization of bean husk-based carbon: Efficient cadmium (II) removal from aqueous solutions

Leonardo Chávez-Guerrero, René Rangel-Méndez, Emilio Muñoz-Sandoval, David A. Cullen, David Smith, Humberto Terrones, Mauricio Terrones

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

We report the production of a modified carbon by heat treating bean husk (Phaseolus vulgaris) at 270 °C in Ar, followed by chemical activation using HNO3. The material was studied using thermogravimetric analysis (TGA), infrared spectroscopy (IRS), high-resolution transmission electron microscopy (HRTEM), elemental mapping, energy dispersive X-ray spectroscopy (EDX), X-ray powder diffraction and scanning electron microscopy (SEM). Cd 2+ sorption studies with this material were carried out at different concentrations. It was found that cadmium (II) is effectively removed by the modified material obtained from bean husk (180 mg/g). The sorption mechanism is discussed in terms of the activated surface properties. A relationship between the oxygen content and sorption was found in this novel material. Commercial activated carbon (AC) (F400) was used for comparison.

Original languageEnglish (US)
Pages (from-to)3473-3479
Number of pages7
JournalWater Research
Volume42
Issue number13
DOIs
StatePublished - Jul 2008

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Keywords

  • Amorphous carbon
  • Bean husk
  • Cadmium
  • Glassy carbon
  • Nanostructure

ASJC Scopus subject areas

  • Ecological Modeling
  • Water Science and Technology
  • Waste Management and Disposal
  • Pollution

Cite this

Chávez-Guerrero, L., Rangel-Méndez, R., Muñoz-Sandoval, E., Cullen, D. A., Smith, D., Terrones, H., & Terrones, M. (2008). Production and detailed characterization of bean husk-based carbon: Efficient cadmium (II) removal from aqueous solutions. Water Research, 42(13), 3473-3479. https://doi.org/10.1016/j.watres.2008.04.022