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    STUDIA CHEMIA - Ediţia nr.4 din 2022  
         
  Articol:   INVESTIGATION ON THE POTENTIAL USAGE OF LIGNOCELLULOSIC WASTES FOR Cd(II) REMOVAL.

Autori:  ANDRADA MĂICĂNEANU, CERASELLA INDOLEAN.
 
       
         
  Rezumat:  
DOI: 10.24193/subbchem.2022.4.07

Published Online: 2022-12-30
Published Print: 2022-12-30
pp. 109-120

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Abstract. Various lignocellulosic waste materials were assessed for their potential usage as biosorbents for Cd(II) removal from wastewaters. Sunflower seed shells, carrot peel, bean pods, eggplant peel, and orange peel in dry form and different grain sizes were evaluated. Contact time, initial Cd(II) concentration, and biosorbent amount were also tested. Eggplant peel was the most efficient biosorbent with an experimental biosorption capacity of 9.33 mg/g, a monolayer capacity (Langmuir) of 18.05 mg/g, and maximum % yield removal of 97.33%. Experimental data best fitted the Langmuir isotherm model (exception, orange peel) and the pseudo-second-order kinetic model (all materials).

Keywords: cadmium(II), biosorption, waste valorisation, circular economy, sunflower seed shell, carrot peel, bean pod, eggplant peel, orange peel
 
         
     
         
         
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