title: Nanocelluloses and their phosphorylated derivatives for selective adsorption of Ag(+), Cu(2+) and Fe(3+) from industrial effluents.
abstract: The potential of nanoscaled cellulose and enzymatically phosphorylated derivatives as bio-adsorbents to remove metal ions (Ag(+), Cu(2+) and Fe(3+)) from model water and industrial effluents is demonstrated. Introduction of phosphate groups onto nanocelluloses significantly improved the metal sorption velocity and sorption capacity. The removal efficiency was considered to be driven by the high surface area of these nanomaterials as well as the nature and density of functional groups on the nanocellulose surface. Generally, in the solutions containing only single types of metal ions, the metal ion selectivity was in the order Ag(+)>Cu(2+)>Fe(3+), while in the case of mixtures of ions, the order changed to Ag(+)>Fe(3+)>Cu(2+), irrespective of the surface functionality of the nanocellulose. In the case of industrial effluent from the mirror making industry, 99% removal of Cu(2+) and Fe(3+) by phosphorylated nanocellulose was observed. The study showed that phosphorylated nanocelluloses are highly efficient biomaterials for scavenging multiple metal ions, simultaneously, from industrial effluents.
authors: Division of Materials Science, Luleå University of Technology, 97187 Luleå, Sweden. Electronic address: peng.liu@ltu.se.
authors: Peng
authors: P
authors: Liu
authors: Division of Materials Science, Luleå University of Technology, 97187 Luleå, Sweden. Electronic address: pere.fb@hotmail.com.
authors: Pere Ferrer
authors: PF
authors: Borrell
authors: University of Maribor, Institute for Engineering Materials and Design, Smetanova ul. 17, SI-2000 Maribor, Slovenia. Electronic address: mojca.bozic@um.si.
authors: Mojca
authors: M
authors: Božič
authors: University of Maribor, Institute for Engineering Materials and Design, Smetanova ul. 17, SI-2000 Maribor, Slovenia. Electronic address: vanja.kokol@um.si.
authors: Vanja
authors: V
authors: Kokol
authors: Division of Materials Science, Luleå University of Technology, 97187 Luleå, Sweden. Electronic address: kristiina.oksman@ltu.se.
authors: Kristiina
authors: K
authors: Oksman
authors: Division of Materials Science, Luleå University of Technology, 97187 Luleå, Sweden. Electronic address: aji.mathew@ltu.se.
authors: Aji P
authors: AP
authors: Mathew
mesh_terms: D000327:Adsorption; D002482:Cellulose / Q000737:chemistry*; D006593:Hexokinase / Q000737:chemistry; D007220:Industrial Waste; D019216:Metals, Heavy / Q000737:chemistry*; D057139:Nanofibers / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry*; D010766:Phosphorylation; D014865:Waste Disposal, Fluid / Q000379:methods; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D007220:Industrial Waste; D019216:Metals, Heavy; D014874:Water Pollutants, Chemical; D002482:Cellulose; D006593:Hexokinase
keywords: Adsorption; Heavy metal ions; Nanocellulose; Phosphorylation; Water purification