Biosorption mechanism of Methylene Blue from aqueous solution onto White Pine (Pinus durangensis) sawdust: Effect of operating conditions

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...