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Evaluation of the adsorptive capacity of spent coffee powder for the removal of aqueous organic pollutants
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  • Journal title : Journal of Wetlands Research
  • Volume 18, Issue 1,  2016, pp.39-44
  • Publisher : Korean Wetlands Society
  • DOI : 10.17663/JWR.2016.18.1.039
 Title & Authors
Evaluation of the adsorptive capacity of spent coffee powder for the removal of aqueous organic pollutants
Kim, Seulgi; Na, Seungmin; Son, Younggyu;
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The reuse of spent coffee powder has been researched for environmental engineering applications such as adsorbents of organic/inorganic pollutants. In this study adsorption equilibrium tests and adsorption kinetics tests for the removal of aqueous organic pollutant (methylene blue) were conducted using spent coffee powder, granular activated carbon, and powdered activated carbon. It was found that the maximum adsorption capacity of three adsorbents followed the order of powdered activated carbon (178.6 mg/g) > spent coffee powder (60.6 mg/g) > granular activated carbon (15.6 mg/g). The results of adsorption kinetics tests also indicated that spent coffee powder had higher kinetic parameters than granular activated carbon for pseudo 1st and 2nd order kinetics. The high performance of spent coffee powder might be due to its porous surface like those of granular and powdered activated carbons and smaller particle size comparing with granular activated carbon.
Spent coffee powder;Granular activated carbon;Powdered activated carbon;Adsorption equilibrium;Adsorption kinetics;
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