A novel extracellular biopolymer produced from Pseudomonas fluorescens C-2: Preparation, characterisation and adsorption behaviours towards nickel(II) ions in aqueous solution

作者：Yanli Mao; Hongwei Hu; Yongsheng Yan^*; Hongxiang Ou

来源：International Journal of Materials and Structural Integrity, 2012, 6(1): 74-93.

DOI：10.1504/IJMSI.2012.046189

• Adsorption behaviour
• Adsorption data
• Adsorption kinetics
• Energy dispersive x-ray spectrometers
• Extracellular
• FTIR
• Iron ions
• Kinetic rates
• Langmuir isotherm
• Monolayer adsorption
• Nickel ions
• Potassium ions
• Pseudo-second order model
• Pseudomonas fluorescens
• Sodium ions

A novel extracellular biopolymer (PFC02) was prepared from Pseudomonas fluorescens C-2 for the removal of nickel(II) ions from aqueous solution. The prepared PFC02 was characterised by Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) coupled with energy dispersive X-ray spectrometer (EDS) analysis. The maximum nickel(II) adsorption was obtained at pH 4.5. The Langmuir isotherm better fitted the adsorption data with the monolayer adsorption capacity of 88.49 mg g-1 at 25°C. The kinetic rates were best fitted to the pseudo-second-order model. Both light and heavy metal ions decreased nickel(II) binding by PFC02, with iron ions and aluminium ions showing a more pronounced effect than sodium ions and potassium ions, while the interfering heavy metal ions followed the order: copper(II) > cadmium(II) > zinc(II). The prepared PFC02 can be used as an effective, low-cost promising sorbent for the removal of nickel from aqueous solution.

• 出版日期2012
• 单位河南大学