64414 20210121114524.0 doi 10.1016/j.jenvman.2015.03.007 sideral 103386 ART-2015-103386 eng Silva Lacerda, Viviane da Rhodamine B removal with activated carbons obtained from lignocellulosic waste. 2015 Access copy available to the general public Unrestricted 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. info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 3.131 2015 ENVIRONMENTAL SCIENCES 54 / 225 = 0.24 2015 Q1 T1 1.189 2015 Environmental Engineering 2015 Q1 Waste Management and Disposal 2015 Q1 Medicine (miscellaneous) 2015 Q1 Management, Monitoring, Policy and Law 2015 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion López Sotelo, Juan Benito Correa Guimaraes, Adriana Hernández Navarro, Salvador Sánchez Báscones, Mercedes Navas Gracia, Luis Manuel (orcid)0000-0003-2713-2786 Martín Ramos, Pablo Universidad de Zaragoza Martín Gil, Jesús 5011 500 Universidad de Zaragoza Dpto. CC.Agrar.y Medio Natural Area Ingeniería Agroforestal 155 (2015), 67-76 J. environ. manag. Journal of Environmental Management 0301-4797 458544 http://zaguan.unizar.es/record/64414/files/texto_completo.pdf Postprint 105357 http://zaguan.unizar.es/record/64414/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:64414 articulos driver 2021-01-21-11:04:48 ARTICLE