RT info:eu-repo/semantics/article
T1 Rhodamine B removal with activated carbons obtained from lignocellulosic waste
A1 Silva Lacerda, Viviane da
A1 López Sotelo, Juan Benito
A1 Correa Guimaraes, Adriana
A1 Hernández Navarro, Salvador
A1 Sánchez Báscones, Mercedes
A1 Navas Gracia, Luis Manuel
A1 Martín Ramos, Pablo
A1 Martín Gil, Jesús
K1 Carbon, Activated
K1 Adsorción
K1 Pinos
K1 Arboles
K1 Aceites vegetales
K1 Residuos - Tratamiento
K1 Rhodamine B
K1 5102.01 Agricultura
AB By-products from the wax production process from carnauba palm (leaves), from the extraction of oil from macauba seeds (endocarp) and from pine nut production (shell) have been assessed for activated carbon production, using H3PO4 or CaCl2 for their chemical activation. The resulting activated charcoals have been thoroughly characterized by elemental and thermal analysis, X-ray diffraction, infrared spectroscopy, electron scanning microscopy and N2 adsorption behavior. Subsequently, their adsorption capacity for the removal of rhodamine B (RhB) from aqueous solutions has been evaluated by studying different parameters: contact time, pH, adsorbent dose, initial dye concentration and solution temperature. The adsorption of RhB followed Freundlich's model in all cases. Kinetic studies indicate that the pseudo-second order model can be used for describing the dynamics of the adsorption process. Thermodynamic parameters have also been evaluated, indicating its endothermic and spontaneous nature. Finally, a preliminary analysis of the impact of cellulose content in the carbon precursor materials has been conducted, by using a mixture of native cellulose with one of the lignocellulosic materials.
PB Elsevier
SN 0301-4797
YR 2015
FD 2015
LK https://uvadoc.uva.es/handle/10324/56005
UL https://uvadoc.uva.es/handle/10324/56005
LA eng
NO Journal of Environmental Management, 2015, Vol. 155, págs. 67-76
NO Producción Científica
DS UVaDOC
RD 23-nov-2024