Titre :

Adsorption of surfactin produced from Bacillus subtilis using nonwoven PET (polyethylene terephthalate) fibrous membranes functionalized with chitosan

Auteur(s) :

Behary, N. [Auteur]
Génie des Matériaux Textiles - ULR 2461 [GEMTEX]
Université de Lille
Perwuelz, A. [Auteur]
Université de Lille
Génie et Matériaux Textiles [GEMTEX]
Campagne, C. [Auteur]
Génie des Matériaux Textiles - ULR 2461 [GEMTEX]
Université de Lille
Lecouturier, D. [Auteur]
Laboratoire de Procédés Biologiques, Génie Enzymatique et Microbien [ProBioGEM]
Université de Lille
Dhulster, Pascal [Auteur]
Laboratoire de Procédés Biologiques, Génie Enzymatique et Microbien [ProBioGEM]
Université de Lille
Mamede, Anne-Sophie [Auteur]
Université de Lille
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]

Titre de la revue :

Colloid Surf. B-Biointerfaces

Numéro :

90

Pagination :

137-143

Date de publication :

2016-02-03

ISSN :

0927-7765

Mot(s)-clé(s) :

Surfactin
Adsorption
PET nonwoven membranes
Chitosan
Air atmospheric plasma treatment
Zeta potential
XPS
HPLC

Résumé en anglais : [en]

This article deals with an alternative method for bio-separation of surfactin produced by Bacillus subtilis using sorption method on nonwoven PET (polyethylene terephthalate) fibrous membranes functionalized with chitosan. In ...
Lire la suite >This article deals with an alternative method for bio-separation of surfactin produced by Bacillus subtilis using sorption method on nonwoven PET (polyethylene terephthalate) fibrous membranes functionalized with chitosan. In the first part of the study, surface functionalization of the PET nonwoven fibrous membranes is carried out with aqueous 65% deacetylated chitosan solution with or without a prior surface activation using air-atmospheric plasma treatment. Very small modification of the PET fibrous nonwoven air-permeability confirms the functionalization of PET fibre surface with little reduction of membrane porosity. The functionalized membranes are then characterized by physico-chemical methods: X-ray Photoelectron Spectroscopy (XPS), Wettability and zeta potential. Chitosan increases drastically the zeta potential of PET at all pH values though a prior plasma treatment of the PET membrane reduces slightly the increase in zeta potential values. Sorption of surfactin quantified by HPLC shows that the extent of surfactin sorption on PET nonwovens depends on the surface functionalization method. Surface functionalization with chitosan results in immediate sorption of the entire quantity of surfactin. A prior surface activation by air atmospheric plasma treatment of the PET membranes before chitosan application retards the sorption of entire surfactin which takes place after 1.5 h, only. Increased zeta potential and increased hydrophobic behavior in the presence of chitosan without plasma activation would explain the interesting surfactin sorption results.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

Université de Lille
CNRS
Centrale Lille
ENSCL
Univ. Artois

Collections :

• Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Date de dépôt :

2023-05-30T17:31:26Z
2024-04-18T11:44:15Z