title: Biosorption of alpacide blue from aqueous solution by lignocellulosic biomass: Luffa cylindrica fibers.
abstract: The aim of the present work is to develop an effective and inexpensive pollutant-removal technology using lignocellulosic fibers: Luffa cylindrica, for the biosorption of an anionic dye: alpacide blue. The influence of some experimental parameters such as pH, temperature, initial concentration of the polluted solution, and mass of the sorbent L. cylindrica on the biosorption of alpacide blue by L. cylindrica fibers has been investigated. Optimal parameters for maximum quantity of biosorption dye were achieved after 2 h of treatment in a batch system using an initial dye concentration of 20 mg/L, a mass of 1 g of L. cylindrica fibers, and pH 2. In these conditions, the quantity of dye retained is 2 mg/g and the retention rate is 78 %. Finally, a mathematical modeling of kinetics and isotherms has been used for mathematical modeling; the model of pseudo-second order is more appropriate to describe this phenomenon of biosorption. Concerning biosorption isotherms, the Freundlich model is the most appropriate for a biosorption of alpacide blue dye by L. cylindrica fibers.
authors.affiliation: Laboratory of Energy and Materials (LABEM), High School of Sciences and Technology of Hammam Sousse, FP4BATIW Project, Sousse University-Tunisia, BP 4011, Hammam, Sousse, Tunisia. aida.kesraoui@gmail.com.
authors.forename: Aida
authors.identifier: http://orcid.org/0000-0002-3155-7106
authors.initials: A
authors.lastname: Kesraoui
authors.affiliation: Laboratory of Energy and Materials (LABEM), High School of Sciences and Technology of Hammam Sousse, FP4BATIW Project, Sousse University-Tunisia, BP 4011, Hammam, Sousse, Tunisia.
authors.forename: Asma
authors.initials: A
authors.lastname: Moussa
authors.affiliation: Laboratory of Energy and Materials (LABEM), High School of Sciences and Technology of Hammam Sousse, FP4BATIW Project, Sousse University-Tunisia, BP 4011, Hammam, Sousse, Tunisia.
authors.forename: Ghada Ben
authors.initials: GB
authors.lastname: Ali
authors.affiliation: Laboratory of Energy and Materials (LABEM), High School of Sciences and Technology of Hammam Sousse, FP4BATIW Project, Sousse University-Tunisia, BP 4011, Hammam, Sousse, Tunisia.
authors.forename: Mongi
authors.initials: M
authors.lastname: Seffen
mesh_terms: D000327:Adsorption; D018533:Biomass; D004396:Coloring Agents / Q000032:analysis / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008031:Lignin / Q000737:chemistry*; D029776:Luffa / Q000737:chemistry*; D008956:Models, Chemical; D012996:Solutions; D013696:Temperature; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000737:chemistry*
chemical_list: D004396:Coloring Agents; D012996:Solutions; D014874:Water Pollutants, Chemical; C036909:lignocellulose; D008031:Lignin
keywords: Alpacide blue; Biosorption; Isotherms; Kinetics; Lignocellulosic materials; Luffa cylindrica; Modeling