title: Wastewater treatment enhancement by applying a lipopeptide biosurfactant to a lignocellulosic biocomposite.
abstract: In this work, a natural lipopeptide biosurfactant obtained from corn steep liquor was included in the formulation of a lignocellulosic biocomposite used for the treatment of wastewater. The results obtained indicate that the dye sorption capacity of the hydrogel containing hydrolysed vineyard pruning waste can be significantly promoted via surfactant modification using natural detergents. The elimination of dye compounds and the removal of sulphates were increased around 10% and 62%, respectively, when the biocomposite modified with biosurfactant was used. This outcome can be intrinsically related to the rougher, rounder, more compact and better-emulsified sphere achieved after the addition of the lipopeptide biosurfactant. The bioadsorption process followed a pseudo-second order kinetic model and both intraparticle diffusion and liquid film diffusion were involved in the bioadsorption mechanism. Therefore, the utilisation of biosurfactants shows great potential in the formulation of eco-friendly adsorbents for environmental application.
authors.affiliation: Chemical Engineering Department, University of Vigo, School of Industrial Engineering (EEI), Campus As Lagoas, Marcosende, 36310 Vigo - Pontevedra, Spain. Electronic address: mp.ameneiro@uvigo.es.
authors.forename: M
authors.initials: M
authors.lastname: Perez-Ameneiro
authors.affiliation: Chemical Engineering Department, University of Vigo, School of Industrial Engineering (EEI), Campus As Lagoas, Marcosende, 36310 Vigo - Pontevedra, Spain. Electronic address: xanel.vecino@uvigo.es.
authors.forename: X
authors.initials: X
authors.lastname: Vecino
authors.affiliation: Chemical Engineering Department, University of Vigo, School of Industrial Engineering (EEI), Campus As Lagoas, Marcosende, 36310 Vigo - Pontevedra, Spain. Electronic address: jmcruz@uvigo.es.
authors.forename: J M
authors.initials: JM
authors.lastname: Cruz
authors.affiliation: Chemical Engineering Department, University of Vigo, School of Industrial Engineering (EEI), Campus As Lagoas, Marcosende, 36310 Vigo - Pontevedra, Spain. Electronic address: amoldes@uvigo.es.
authors.forename: A B
authors.initials: AB
authors.lastname: Moldes
mesh_terms: D000327:Adsorption; D004396:Coloring Agents / Q000302:isolation & purification; D021621:Imaging, Three-Dimensional; D007220:Industrial Waste / Q000032:analysis; D007700:Kinetics; D008031:Lignin / Q000737:chemistry*; D055666:Lipopeptides / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D008962:Models, Theoretical; D013501:Surface-Active Agents / Q000737:chemistry*; D013818:Thermogravimetry; D062065:Wastewater / Q000737:chemistry*; D018508:Water Purification / Q000379:methods*
chemical_list: D004396:Coloring Agents; D007220:Industrial Waste; D008031:Lignin; D055666:Lipopeptides; D013501:Surface-Active Agents; D062065:Wastewater; C036909:lignocellulose
keywords: Bioadsorption kinetics; Bioadsorption mechanism; Biosurfactant; Intraparticle and liquid film diffusion; Lignocellulosic biocomposites; Roughness