title: Activated carbon prepared from yerba mate used as a novel adsorbent for removal of tannery dye from aqueous solution.
abstract: Activated carbon prepared from yerba mate (Ilex paraguariensis) was used as adsorbent for the removal of tannery dye from aqueous solution. The activated carbon was characterized, and it showed a mesoporous texture, with surface area of 537.4 m2 g(-1). The initial dye concentration, contact time and pH influenced the adsorption capacity. The equilibrium data were in good agreement with both Langmuir and Freundlich isotherms. The adsorption kinetics of the tannery dye on activated carbon prepared from yerba mate followed a pseudo-second-order model. The adsorption process was found to be controlled by both external mass-transfer and intraparticle diffusion, but the external diffusion was the dominating process. This work highlights the potential application of activated carbon produced from yerba mate in the field of adsorption.
authors.affiliation: Department of Chemical Engineering, Federal University of Santa Maria, Santa Maria, Brazil.
authors.forename: Bruno
authors.initials: B
authors.lastname: Linhares
authors.affiliation: Department of Chemical Engineering, Federal University of Santa Maria, Santa Maria, Brazil.
authors.forename: Caroline Trevisan
authors.initials: CT
authors.lastname: Weber
authors.affiliation: Department of Chemical Engineering, Federal University of Santa Maria, Santa Maria, Brazil.
authors.forename: Edson Luiz
authors.initials: EL
authors.lastname: Foletto
authors.affiliation: Department of Chemical Engineering, Federal University of Santa Maria, Santa Maria, Brazil.
authors.forename: Diego Silva
authors.initials: DS
authors.lastname: Paz
authors.affiliation: Department of Chemical Engineering, Federal University of Santa Maria, Santa Maria, Brazil.
authors.forename: Marcio A
authors.initials: MA
authors.lastname: Mazutti
authors.affiliation: Department of Chemical Engineering, Federal University of Santa Maria, Santa Maria, Brazil.
authors.forename: Gabriela Carvalho
authors.initials: GC
authors.lastname: Collazzo
mesh_terms: D000327:Adsorption; D002606:Charcoal / Q000737:chemistry*; D004396:Coloring Agents / Q000032:analysis / Q000302:isolation & purification*; D006863:Hydrogen-Ion Concentration; D030019:Ilex paraguariensis / Q000737:chemistry*; D007220:Industrial Waste; D013633:Tanning; D062065:Wastewater / Q000737:chemistry; D018508:Water Purification / Q000379:methods*
chemical_list: D002606:Charcoal; D004396:Coloring Agents; D007220:Industrial Waste; D062065:Wastewater