Characterization and application of three novel biosorbents “Eucalyptus globulus, Cynara cardunculus, and Prunus cerasefera” to dye removal

Three biosorbents: Eucalyptus globulus, Cynara cardunculus, and Prunus cerasefera leaves were tested to remove Methylene Blue from aqueous solutions. The three biosorbents were characterized by the determination of the Methylene Blue accessible surface, iodine number, BET specific surface area using...

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Published in:Desalination and water treatment 2013-04, Vol.51 (16-18), p.3527-3538
Main Authors: Ouldmoumna, Aoumria, Reinert, Laurence, Benderdouche, Nouredine, Bestani, Benaouda, Duclaux, Laurent
Format: Article
Language:English
Subjects:
Adsorbents
Adsorption
Analytical chemistry
Applied sciences
Biosorption
Chemical Sciences
Contact
Cynara cardunculus
Environmental Sciences
Eucalyptus
Eucalyptus globulus
Exact sciences and technology
General purification processes
Leaves
Methylene Blue
Pollution
Prunus
Prunus cerasefera
Surface chemistry
Wastewaters
Water treatment and pollution
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Summary:Three biosorbents: Eucalyptus globulus, Cynara cardunculus, and Prunus cerasefera leaves were tested to remove Methylene Blue from aqueous solutions. The three biosorbents were characterized by the determination of the Methylene Blue accessible surface, iodine number, BET specific surface area using nitrogen adsorption at 77 K, morphological analysis by scanning electron microscopy, pHPZC, and FTIR analysis. The Methylene Blue adsorption uptakes of the biosorbents were studied as a function of pH, biosorbent dose, stirring speed, ionic strength, and contact time. Optimal conditions for maximum removal of Methylene Blue were found to be: a pH of 10, an adsorbent dose of 8 g L-1, and a contact time of 2 h for E. globulus and C. cardunculus, and a pH of 6.5, an adsorbent dose of 4 g L-1 and a contact time of 2 h for P. cerasefera. The Langmuir models as determined from batch experiments yielded a maximum capacity of adsorption by biosorbent prepared from E. globulus leaves of 250 mg g-1 against 333 mg g-1 and 143 mg g-1 for biosorbents prepared from C. cardunculus and P. cerasefera leaves, respectively. For all the materials used, the adsorption process was found exothermic and spontaneous.
ISSN:1944-3986
1944-3994
1944-3986
DOI:10.1080/19443994.2012.749583