title: Use of chitosan for chromium removal from exhausted tanning baths.
abstract: A novel approach, based on chitosan heavy-metal sequestrating ability, is proposed for chromium(III) removal from spent tanning liquor. Experimental results, obtained at lab-scale using real wastewater, are presented and discussed. Resulting efficiencies are extremely high, and strongly dependent on chitosan dose and pH value. Comparative analyses with other polysaccharides is also carried out showing that amine groups are more efficient than carboxyl and sulphate ones. Chromium recovery from sorption complexes and chitosan regeneration is finally proposed to optimize the whole process.
authors: Department of Hydraulic and Environmental Engineering Girolamo Ippolito, University of Naples Federico II, via Claudio 21, 80125 Naples, Italy.
authors: Raffaele
authors: R
authors: Cesaro
authors: Massimiliano
authors: M
authors: Fabbricino
authors: Rosa
authors: R
authors: Lanzetta
authors: Anna
authors: A
authors: Mancino
authors: Biagio
authors: B
authors: Naviglio
authors: Michelangelo
authors: M
authors: Parrilli
authors: Roberto
authors: R
authors: Sartorio
authors: Michele
authors: M
authors: Tomaselli
authors: Gelsomina
authors: G
authors: Tortora
mesh_terms: D001494:Baths; D048271:Chitosan / Q000737:chemistry*; D002857:Chromium / Q000737:chemistry / Q000302:isolation & purification*; D007220:Industrial Waste / Q000517:prevention & control; D012037:Refuse Disposal / Q000379:methods; D013633:Tanning
chemical_list: D007220:Industrial Waste; D002857:Chromium; D048271:Chitosan