Production of low-cost adsorbents by torrefaction of biomass wastes from Arundo donax L. and Phoenix canariensis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The valorization of torrefied biomass wastes of Arundo donax L. and Phoenix canariensis as adsorbents of the methylene blue dye (MB) was investigated. Removal percentages between ca. 90% and 99% were attained for initial MB concentrations up to 200 mg/L, with equilibrium being reached within the first 30 min. Adsorption kinetics followed the pseudo-second order model and the equilibrium data were best described by the Langmuir isotherm model, with adsorption capacities following the order: torrefied palm leaf sheaths (92.68 mg/g) > torrefied Arundo donax L. (89.77 mg/g) > torrefied palm trunk (59.92 mg/g). All adsorbents evidenced other important features, such as selectivity towards a given dye from a mixture and also allowed recovery of adsorbed dye, as opposed to a commercial activated carbon (AC). Results suggest that these abundant wastes have potential as low-cost adsorbents for dye removal from industrial wastewaters, a more sustainable option than the usual landfilling.

Original languageEnglish
Title of host publicationECOS 2018 - Proceedings of the 31st International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems
PublisherUMDGEO - Department of Geography of University of Minho
ISBN (Electronic)9789729959646
Publication statusPublished - 2018
Event31st International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2018 - Guimaraes, Portugal
Duration: 17 Jun 201821 Jun 2018

Conference

Conference31st International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2018
CountryPortugal
CityGuimaraes
Period17/06/1821/06/18

Keywords

  • Arundo donax L
  • Desorption
  • Dye adsorption
  • Phoenix canariensis
  • Selectivity
  • Torrefaction

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