title: Phosphorus elimination from aqueous solution using 'zirconium loaded okara' as a biosorbent.
abstract: This work deals with the capture of phosphorus from aqueous solutions by biosorption onto zirconium loaded okara (ZLO). The batch-mode experiments were conducted to examine the effect of pH, biosorbent dose, initial phosphorus concentration, contact time, and temperature on the process. It was found that, the adsorption was most favored in the pH range of 2-6. The optimal doses for the adsorption, at initial phosphorus concentrations of 5, 10, 25, 50mg/L were 2, 3, 7, 10g/L, respectively. The maximum adsorption capacity of ZLO was approximately 44.13mg PO4/g at 298K. The phosphate removal was rapid, reaching 95% in 30min. Freundlich model best fitted the equilibrium data, while Pseudo-second order model satisfactorily described the kinetic results. Thermodynamic analysis revealed feasible, spontaneous, and endothermic nature of the process. The research would be beneficial for developing a promising, eco-friendly phosphorus biosorbent from a plentiful AWB - okara.
authors.affiliation: Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology, Sydney (UTS), 15 Broadway, Ultimo, NSW 2007, Australia.
authors.forename: T A H
authors.initials: TAH
authors.lastname: Nguyen
authors.affiliation: Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology, Sydney (UTS), 15 Broadway, Ultimo, NSW 2007, Australia. Electronic address: ngohuuhao121@gmail.com.
authors.forename: H H
authors.initials: HH
authors.lastname: Ngo
authors.affiliation: Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology, Sydney (UTS), 15 Broadway, Ultimo, NSW 2007, Australia.
authors.forename: W S
authors.initials: WS
authors.lastname: Guo
authors.affiliation: Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology, Sydney (UTS), 15 Broadway, Ultimo, NSW 2007, Australia.
authors.forename: J L
authors.initials: JL
authors.lastname: Zhou
authors.affiliation: School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China.
authors.forename: J
authors.initials: J
authors.lastname: Wang
authors.affiliation: School of Municipal and Environmental Engineering, Harbin Institute of Technology, 150090, China.
authors.forename: H
authors.initials: H
authors.lastname: Liang
authors.affiliation: School of Municipal and Environmental Engineering, Harbin Institute of Technology, 150090, China.
authors.forename: G
authors.initials: G
authors.lastname: Li
mesh_terms: D000327:Adsorption; D001673:Biodegradation, Environmental; D007700:Kinetics; D008982:Molybdenum; D010758:Phosphorus / Q000032:analysis / Q000737:chemistry*; D010940:Plant Proteins / Q000737:chemistry*; D011134:Polysaccharides / Q000737:chemistry*; D045730:Soy Foods; D013816:Thermodynamics; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000737:chemistry*; D018508:Water Purification / Q000379:methods*; D015040:Zirconium / Q000737:chemistry*
chemical_list: D010940:Plant Proteins; D011134:Polysaccharides; D014874:Water Pollutants, Chemical; C412882:okara, Glycine max; D010758:Phosphorus; C017541:molybdenum blue; D008982:Molybdenum; D015040:Zirconium
keywords: Biosorbent; Isotherms; Kinetics; Okara; Phosphate removal