@misc{10481/52457,
year = {2016},
month = {11},
url = {http://hdl.handle.net/10481/52457},
abstract = {In this work, the biosorption mechanism of the cationic dye Methylene Blue (MB) on natural White Pine
sawdust (NS) (Pinus durangensis) was investigated. Likewise, the surface charge distribution of NS was
determined, and its point of zero charge was found to be 4.3. Besides, the capacity of the NS for adsorbing
MB was increased 1.7, 2.0 and 4.6 times when the pH was raised from 3 to 4.25, 3 to 7 and 3 to 10,
respectively. This behavior was attributed to the electrostatic attraction between the negatively charged
surface of NS and the cationic species MBþ. The adsorption capacity increased with increased temperature
because the adsorption was an endothermic process. The adsorption capacity was drastically
reduced by increasing the ionic strength of the solution corroborating with the fact that the electrostatic
attractions played a crucial role in the adsorption of MB on NS. It was also shown that the MB was
chemisorbed because the adsorption was not reversible. The predominant adsorption mechanisms were
the electrostatic attraction and chemisorption and not ion exchange.},
organization = {This work was funded by the Consejo Nacional de Ciencia y
Tecnologia, CONACyT, Mexico, through grants: CONAFOR-2010-
C02-148302 and CB-2012-02-182779.},
publisher = {Elsevier B. V.},
keywords = {Biosorption},
keywords = {Chemisorption},
keywords = {Electrostatic attraction},
keywords = {Mechanism},
keywords = {Methylene Blue},
keywords = {White Pine},
keywords = {Wood sawdust},
title = {Biosorption mechanism of Methylene Blue from aqueous solution onto White Pine (Pinus durangensis) sawdust: Effect of operating conditions},
doi = {10.1016/j.serj.2016.11.009},
author = {Salazar-Rabago, Jacob J. and Leyva-Ramos, Roberto and Rivera Utrilla, José and Ocampo Pérez, Raúl and Cerino-Cordova, Felipe J.},
}